mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 23:47:24 +00:00
11f32da79f
Booting of non-FIT images bypass our chain-of-trust boot flow, these options should not be allowed when high security is set. Signed-off-by: Andrew Davis <afd@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
1868 lines
63 KiB
Text
1868 lines
63 KiB
Text
menu "SPL / TPL / VPL"
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config SUPPORT_SPL
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bool
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config SUPPORT_TPL
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bool
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config SUPPORT_VPL
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bool
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config SPL_DFU_NO_RESET
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bool
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config SPL
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bool
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depends on SUPPORT_SPL
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prompt "Enable SPL"
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help
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If you want to build SPL as well as the normal image, say Y.
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config SPL_FRAMEWORK
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bool "Support SPL based upon the common SPL framework"
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depends on SPL
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default y
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help
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Enable the SPL framework under common/spl/. This framework
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supports MMC, NAND and YMODEM and other methods loading of U-Boot
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and the Linux Kernel. If unsure, say Y.
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config SPL_FRAMEWORK_BOARD_INIT_F
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bool "Define a generic function board_init_f"
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depends on SPL_FRAMEWORK
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help
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Define a generic function board_init_f that:
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- initialize the spl (spl_early_init)
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- initialize the serial (preloader_console_init)
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Unless you want to provide your own board_init_f, you should say Y.
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config SPL_SIZE_LIMIT
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hex "Maximum size of SPL image"
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depends on SPL
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default 0x11000 if ARCH_MX6 && !MX6_OCRAM_256KB
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default 0x31000 if ARCH_MX6 && MX6_OCRAM_256KB
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default 0x0
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help
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Specifies the maximum length of the U-Boot SPL image.
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If this value is zero, it is ignored.
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config SPL_SIZE_LIMIT_SUBTRACT_GD
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bool "SPL image size check: provide space for global data"
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depends on SPL_SIZE_LIMIT > 0
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help
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If enabled, aligned size of global data is reserved in
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SPL_SIZE_LIMIT check to ensure such an image does not overflow SRAM
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if SPL_SIZE_LIMIT describes the size of SRAM available for SPL when
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pre-reloc global data is put into this SRAM, too.
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config SPL_SIZE_LIMIT_SUBTRACT_MALLOC
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bool "SPL image size check: provide space for malloc() pool before relocation"
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depends on SPL_SIZE_LIMIT > 0
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help
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If enabled, SPL_SYS_MALLOC_F_LEN is reserved in SPL_SIZE_LIMIT check
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to ensure such an image does not overflow SRAM if SPL_SIZE_LIMIT
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describes the size of SRAM available for SPL when pre-reloc malloc
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pool is put into this SRAM, too.
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config SPL_SIZE_LIMIT_PROVIDE_STACK
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hex "SPL image size check: provide stack space before relocation"
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depends on SPL_SIZE_LIMIT > 0
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default 0
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help
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If set, this size is reserved in SPL_SIZE_LIMIT check to ensure such
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an image does not overflow SRAM if SPL_SIZE_LIMIT describes the size
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of SRAM available for SPL when the stack required before reolcation
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uses this SRAM, too.
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config SPL_SYS_STACK_F_CHECK_BYTE
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hex
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default 0xaa
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help
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Constant used to check the stack
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config SPL_SYS_REPORT_STACK_F_USAGE
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depends on SPL_SIZE_LIMIT_PROVIDE_STACK != 0
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bool "Check and report stack usage in SPL before relocation"
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help
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If this option is enabled, the initial SPL stack is filled with 0xaa
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very early, up to the size configured with
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SPL_SIZE_LIMIT_PROVIDE_STACK.
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Later when SPL is done using this initial stack and switches to a
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stack in DRAM, the actually used size of this initial stack is
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reported by examining the memory and searching for the lowest
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occurrence of non 0xaa bytes.
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This default implementation works for stacks growing down only.
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config SPL_SHOW_ERRORS
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bool "Show more information when something goes wrong"
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help
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This enabled more verbose error messages and checking when something
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goes wrong in SPL. For example, it shows the error code when U-Boot
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cannot be located. This can help to diagnose the problem and figure
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out a fix, particularly during development.
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This adds a small amount to SPL code size, perhaps 100 bytes.
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config SPL_BINMAN_SYMBOLS
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bool "Declare binman symbols in SPL"
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depends on SPL_FRAMEWORK && BINMAN
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default y
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help
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This enables use of symbols in SPL which refer to U-Boot, enabling SPL
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to obtain the location of U-Boot simply by calling spl_get_image_pos()
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and spl_get_image_size().
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For this to work, you must have a U-Boot image in the binman image, so
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binman can update SPL with the location of it.
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menu "PowerPC and LayerScape SPL Boot options"
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config SPL_NAND_BOOT
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bool "Load SPL from NAND flash"
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depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
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config SPL_MMC_BOOT
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bool "Load SPL from SD Card / eMMC"
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depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
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config SPL_SPI_BOOT
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bool "Load SPL from SPI flash"
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depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
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config SPL_FSL_PBL
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bool "Create SPL in Freescale PBI format"
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depends on (PPC || ARCH_LS1021A || ARCH_LS1043A || ARCH_LS1046A) && \
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SUPPORT_SPL
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help
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Create boot binary having SPL binary in PBI format concatenated with
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u-boot binary.
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endmenu
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config HANDOFF
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bool "Pass hand-off information from SPL to U-Boot proper"
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depends on SPL && BLOBLIST
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help
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It is useful to be able to pass information from SPL to U-Boot
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proper to preserve state that is known in SPL and is needed in U-Boot.
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Enable this to locate the handoff information in U-Boot proper, early
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in boot. It is available in gd->handoff. The state state is set up
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in SPL (or TPL if that is being used).
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if SPL
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config SPL_HANDOFF
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bool "Pass hand-off information from SPL to U-Boot proper"
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depends on HANDOFF && SPL_BLOBLIST
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default y
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help
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This option enables SPL to write handoff information. This can be
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used to pass information like the size of SDRAM from SPL to U-Boot
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proper. Also SPL can receive information from TPL in the same place
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if that is enabled.
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config SPL_LDSCRIPT
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string "Linker script for the SPL stage"
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default "arch/\$(ARCH)/cpu/u-boot-spl.lds"
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help
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The SPL stage will usually require a different linker-script
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(as it runs from a different memory region) than the regular
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U-Boot stage. Set this to the path of the linker-script to
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be used for SPL.
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config SPL_TEXT_BASE
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hex "SPL Text Base"
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default ISW_ENTRY_ADDR if AM43XX || AM33XX || OMAP54XX || ARCH_KEYSTONE
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default 0x10060 if MACH_SUN50I || MACH_SUN50I_H5 || MACH_SUN9I
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default 0x20060 if SUN50I_GEN_H6
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default 0x00060 if ARCH_SUNXI
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default 0xfffc0000 if ARCH_ZYNQMP
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default 0x0
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help
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The address in memory that SPL will be running from.
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config SPL_BOARD_INIT
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bool "Call board-specific initialization in SPL"
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help
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If this option is enabled, U-Boot will call the function
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spl_board_init() from board_init_r(). This function should be
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provided by the board.
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config VPL_BOARD_INIT
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bool "Call board-specific initialization in VPL"
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help
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If this option is enabled, U-Boot will call the function
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spl_board_init() from board_init_r(). This function should be
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provided by the board.
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config SPL_BOOTROM_SUPPORT
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bool "Support returning to the BOOTROM"
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help
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Some platforms (e.g. the Rockchip RK3368) provide support in their
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ROM for loading the next boot-stage after performing basic setup
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from the SPL stage.
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Enable this option, to return to the BOOTROM through the
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BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the
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boot device list, if not implemented for a given board)
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config SPL_BOOTCOUNT_LIMIT
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bool "Support bootcount in SPL"
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depends on SPL_ENV_SUPPORT && !TPL_BOOTCOUNT_LIMIT
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help
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On some boards, which use 'falcon' mode, it is necessary to check
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and increment the number of boot attempts. Such boards do not
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use proper U-Boot for normal boot flow and hence needs those
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adjustments to be done in the SPL.
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config SPL_RAW_IMAGE_SUPPORT
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bool "Support SPL loading and booting of RAW images"
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default n if (ARCH_MX6 && (SPL_MMC || SPL_SATA))
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default y
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depends on !TI_SECURE_DEVICE
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help
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SPL will support loading and booting a RAW image when this option
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is y. If this is not set, SPL will move on to other available
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boot media to find a suitable image.
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config SPL_LEGACY_IMAGE_FORMAT
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bool "Support SPL loading and booting of Legacy images"
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default y if !SPL_LOAD_FIT
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depends on !TI_SECURE_DEVICE
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help
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SPL will support loading and booting Legacy images when this option
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is y. If this is not set, SPL will move on to other available
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boot media to find a suitable image.
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config SPL_LEGACY_IMAGE_CRC_CHECK
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bool "Check CRC of Legacy images"
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depends on SPL_LEGACY_IMAGE_FORMAT
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select SPL_CRC32
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help
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Enable this to check the CRC of Legacy images. While this increases
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reliability, it affects both code size and boot duration.
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If disabled, Legacy images are booted if the image magic and size
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are correct, without further integrity checks.
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config SPL_SYS_MALLOC_SIMPLE
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bool
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prompt "Only use malloc_simple functions in the SPL"
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help
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Say Y here to only use the *_simple malloc functions from
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malloc_simple.c, rather then using the versions from dlmalloc.c;
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this will make the SPL binary smaller at the cost of more heap
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usage as the *_simple malloc functions do not re-use free-ed mem.
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config TPL_SYS_MALLOC_SIMPLE
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bool
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prompt "Only use malloc_simple functions in the TPL"
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depends on TPL
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help
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Say Y here to only use the *_simple malloc functions from
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malloc_simple.c, rather then using the versions from dlmalloc.c;
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this will make the TPL binary smaller at the cost of more heap
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usage as the *_simple malloc functions do not re-use free-ed mem.
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config SPL_STACK_R
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bool "Enable SDRAM location for SPL stack"
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help
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SPL starts off execution in SRAM and thus typically has only a small
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stack available. Since SPL sets up DRAM while in its board_init_f()
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function, it is possible for the stack to move there before
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board_init_r() is reached. This option enables a special SDRAM
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location for the SPL stack. U-Boot SPL switches to this after
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board_init_f() completes, and before board_init_r() starts.
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config SPL_STACK_R_ADDR
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depends on SPL_STACK_R
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hex "SDRAM location for SPL stack"
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default 0x82000000 if ARCH_OMAP2PLUS
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help
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Specify the address in SDRAM for the SPL stack. This will be set up
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before board_init_r() is called.
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config SPL_STACK_R_MALLOC_SIMPLE_LEN
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depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
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hex "Size of malloc_simple heap after switching to DRAM SPL stack"
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default 0x100000
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help
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Specify the amount of the stack to use as memory pool for
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malloc_simple after switching the stack to DRAM. This may be set
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to give board_init_r() a larger heap then the initial heap in
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SRAM which is limited to SYS_MALLOC_F_LEN bytes.
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config SPL_SEPARATE_BSS
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bool "BSS section is in a different memory region from text"
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help
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Some platforms need a large BSS region in SPL and can provide this
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because RAM is already set up. In this case BSS can be moved to RAM.
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This option should then be enabled so that the correct device tree
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location is used. Normally we put the device tree at the end of BSS
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but with this option enabled, it goes at _image_binary_end.
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config SPL_READ_ONLY
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bool
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depends on SPL_OF_PLATDATA
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# Bind cannot be supported because the udevice structs are in read-only
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# memory so we cannot update the linked lists.
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select SPL_OF_PLATDATA_NO_BIND
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select SPL_OF_PLATDATA_RT
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help
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Some platforms (e.g. x86 Apollo Lake) load SPL into a read-only
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section of memory. This means that of-platdata must make a copy (in
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writeable memory) of anything it wants to modify, such as
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device-private data.
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config TPL_SEPARATE_BSS
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bool "BSS section is in a different memory region from text"
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default y if SPL_SEPARATE_BSS
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help
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Some platforms need a large BSS region in TPL and can provide this
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because RAM is already set up. In this case BSS can be moved to RAM.
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This option should then be enabled so that the correct device tree
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location is used. Normally we put the device tree at the end of BSS
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but with this option enabled, it goes at _image_binary_end.
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config SPL_BANNER_PRINT
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bool "Enable output of the SPL banner 'U-Boot SPL ...'"
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default y
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help
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If this option is enabled, SPL will print the banner with version
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info. Disabling this option could be useful to reduce SPL boot time
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(e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
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config TPL_BANNER_PRINT
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bool "Enable output of the TPL banner 'U-Boot TPL ...'"
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depends on TPL
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default y
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help
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If this option is enabled, TPL will print the banner with version
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info. Disabling this option could be useful to reduce TPL boot time
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(e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
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config SPL_EARLY_BSS
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depends on ARM && !ARM64
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bool "Allows initializing BSS early before entering board_init_f"
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help
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On some platform we have sufficient memory available early on to
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allow setting up and using a basic BSS prior to entering
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board_init_f. Activating this option will also de-activate the
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clearing of BSS during the SPL relocation process, thus allowing
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to carry state from board_init_f to board_init_r by way of BSS.
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config SPL_DISPLAY_PRINT
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bool "Display a board-specific message in SPL"
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help
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If this option is enabled, U-Boot will call the function
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spl_display_print() immediately after displaying the SPL console
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banner ("U-Boot SPL ..."). This function should be provided by
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the board.
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config SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
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bool "MMC raw mode: by sector"
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default y if ARCH_SUNXI || ARCH_DAVINCI || ARCH_UNIPHIER || \
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ARCH_MX6 || ARCH_MX7 || \
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ARCH_ROCKCHIP || ARCH_MVEBU || ARCH_SOCFPGA || \
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ARCH_AT91 || ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || \
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OMAP44XX || OMAP54XX || AM33XX || AM43XX || \
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TARGET_SIFIVE_UNLEASHED || TARGET_SIFIVE_UNMATCHED
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help
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Use sector number for specifying U-Boot location on MMC/SD in
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raw mode.
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config SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
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hex "Address on the MMC to load U-Boot from"
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depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
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default 0x40 if ARCH_SUNXI
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default 0x75 if ARCH_DAVINCI
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default 0x8a if ARCH_MX6 || ARCH_MX7
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default 0x100 if ARCH_UNIPHIER
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default 0x0 if ARCH_MVEBU
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default 0x200 if ARCH_SOCFPGA || ARCH_AT91
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default 0x300 if ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || OMAP44XX || \
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OMAP54XX || AM33XX || AM43XX || ARCH_K3
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default 0x4000 if ARCH_ROCKCHIP
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default 0x822 if TARGET_SIFIVE_UNLEASHED || TARGET_SIFIVE_UNMATCHED
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help
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Address on the MMC to load U-Boot from, when the MMC is being used
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in raw mode. Units: MMC sectors (1 sector = 512 bytes).
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config SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET
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hex "U-Boot main hardware partition image offset"
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depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
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default 0x10 if ARCH_SUNXI
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default 0x0
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help
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On some platforms SPL location depends on hardware partition. The ROM
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code skips the MBR sector when loading SPL from main hardware data
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partition. This adds offset to the main U-Boot image. Set this symbol
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to the number of skipped sectors.
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If unsure, leave the default.
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config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
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bool "MMC Raw mode: by partition"
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help
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Use a partition for loading U-Boot when using MMC/SD in raw mode.
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config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
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hex "Partition to use to load U-Boot from"
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depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
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default 1
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help
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Partition on the MMC to load U-Boot from when the MMC is being
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used in raw mode
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config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
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bool "MMC raw mode: by partition type"
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depends on DOS_PARTITION && SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
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help
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Use partition type for specifying U-Boot partition on MMC/SD in
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raw mode. U-Boot will be loaded from the first partition of this
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type to be found.
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config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE
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hex "Partition Type on the MMC to load U-Boot from"
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depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
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help
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Partition Type on the MMC to load U-Boot from, when the MMC is being
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used in raw mode.
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config SUPPORT_EMMC_BOOT_OVERRIDE_PART_CONFIG
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bool "Override eMMC EXT_CSC_PART_CONFIG by user defined partition"
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depends on SUPPORT_EMMC_BOOT
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help
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eMMC boot partition is normally configured by the bits of the EXT_CSD
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register (EXT_CSC_PART_CONFIG), BOOT_PARTITION_ENABLE field. In some
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cases it might be required in SPL to load the image from different
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partition than the partition selected by EXT_CSC_PART_CONFIG register.
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Enable this option if you intend to use an eMMC boot partition other
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then selected via EXT_CSC_PART_CONFIG register and specify the custom
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partition number by the CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
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option.
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config SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
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int "Number of the eMMC boot partition to use"
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depends on SUPPORT_EMMC_BOOT_OVERRIDE_PART_CONFIG
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default 1
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help
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eMMC boot partition number to use when the eMMC in raw mode and
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the eMMC EXT_CSC_PART_CONFIG selection should be overridden in SPL
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|
by user defined partition number.
|
|
|
|
config SPL_CRC32
|
|
bool "Support CRC32"
|
|
default y if SPL_LEGACY_IMAGE_FORMAT || SPL_EFI_PARTITION
|
|
default y if SPL_ENV_SUPPORT || TPL_BLOBLIST
|
|
help
|
|
Enable this to support CRC32 in uImages or FIT images within SPL.
|
|
This is a 32-bit checksum value that can be used to verify images.
|
|
For FIT images, this is the least secure type of checksum, suitable
|
|
for detected accidental image corruption. For secure applications you
|
|
should consider SHA1 or SHA256.
|
|
|
|
config SPL_MD5
|
|
bool "Support MD5"
|
|
depends on SPL_FIT
|
|
help
|
|
Enable this to support MD5 in FIT images within SPL. An MD5
|
|
checksum is a 128-bit hash value used to check that the image
|
|
contents have not been corrupted. Note that MD5 is not considered
|
|
secure as it is possible (with a brute-force attack) to adjust the
|
|
image while still retaining the same MD5 hash value. For secure
|
|
applications where images may be changed maliciously, you should
|
|
consider SHA256 or SHA384.
|
|
|
|
config SPL_FIT_IMAGE_TINY
|
|
bool "Remove functionality from SPL FIT loading to reduce size"
|
|
depends on SPL_FIT
|
|
default y if MACH_SUN50I || MACH_SUN50I_H5 || SUN50I_GEN_H6
|
|
default y if ARCH_IMX8M
|
|
help
|
|
Enable this to reduce the size of the FIT image loading code
|
|
in SPL, if space for the SPL binary is very tight.
|
|
|
|
This skips the recording of each loaded payload
|
|
(i.e. loadable) into the FDT (modifying the loaded FDT to
|
|
ensure this information is available to the next image
|
|
invoked).
|
|
|
|
config SPL_CACHE
|
|
bool "Support CACHE drivers"
|
|
help
|
|
Enable CACHE drivers in SPL. These drivers can keep data so that
|
|
future requests for that data can be served faster. Enable this option
|
|
to build the drivers in drivers/cache as part of an SPL build.
|
|
|
|
config SPL_CPU
|
|
bool "Support CPU drivers"
|
|
help
|
|
Enable this to support CPU drivers in SPL. These drivers can set
|
|
up CPUs and provide information about them such as the model and
|
|
name. This can be useful in SPL since setting up the CPUs earlier
|
|
may improve boot performance. Enable this option to build the
|
|
drivers in drivers/cpu as part of an SPL build.
|
|
|
|
config SPL_CRYPTO
|
|
bool "Support crypto drivers"
|
|
help
|
|
Enable crypto drivers in SPL. These drivers can be used to
|
|
accelerate secure boot processing in secure applications. Enable
|
|
this option to build the drivers in drivers/crypto as part of an
|
|
SPL build.
|
|
|
|
config SPL_DMA
|
|
bool "Support DMA drivers"
|
|
help
|
|
Enable DMA (direct-memory-access) drivers in SPL. These drivers
|
|
can be used to handle memory-to-peripheral data transfer without
|
|
the CPU moving the data. Enable this option to build the drivers
|
|
in drivers/dma as part of an SPL build.
|
|
|
|
config SPL_DRIVERS_MISC
|
|
bool "Support misc drivers"
|
|
help
|
|
Enable miscellaneous drivers in SPL. These drivers perform various
|
|
tasks that don't fall nicely into other categories, Enable this
|
|
option to build the drivers in drivers/misc as part of an SPL
|
|
build, for those that support building in SPL (not all drivers do).
|
|
|
|
config SPL_ENV_SUPPORT
|
|
bool "Support an environment"
|
|
help
|
|
Enable environment support in SPL. The U-Boot environment provides
|
|
a number of settings (essentially name/value pairs) which can
|
|
control many aspects of U-Boot's operation. Normally this is not
|
|
needed in SPL as it has a much simpler task with less
|
|
configuration. But some boards use this to support 'Falcon' boot
|
|
on EXT2 and FAT, where SPL boots directly into Linux without
|
|
starting U-Boot first. Enabling this option will make env_get()
|
|
and env_set() available in SPL.
|
|
|
|
config SPL_SAVEENV
|
|
bool "Support save environment"
|
|
depends on SPL_ENV_SUPPORT
|
|
select SPL_MMC_WRITE if ENV_IS_IN_MMC
|
|
help
|
|
Enable save environment support in SPL after setenv. By default
|
|
the saveenv option is not provided in SPL, but some boards need
|
|
this support in 'Falcon' boot, where SPL need to boot from
|
|
different images based on environment variable set by OS. For
|
|
example OS may set "reboot_image" environment variable to
|
|
"recovery" inorder to boot recovery image by SPL. The SPL read
|
|
"reboot_image" and act accordingly and change the reboot_image
|
|
to default mode using setenv and save the environment.
|
|
|
|
config SPL_ETH
|
|
bool "Support Ethernet"
|
|
depends on SPL_ENV_SUPPORT
|
|
depends on SPL_NET
|
|
help
|
|
Enable access to the network subsystem and associated Ethernet
|
|
drivers in SPL. This permits SPL to load U-Boot over an Ethernet
|
|
link rather than from an on-board peripheral. Environment support
|
|
is required since the network stack uses a number of environment
|
|
variables. See also SPL_NET.
|
|
|
|
config SPL_FS_EXT4
|
|
bool "Support EXT filesystems"
|
|
help
|
|
Enable support for EXT2/3/4 filesystems with SPL. This permits
|
|
U-Boot (or Linux in Falcon mode) to be loaded from an EXT
|
|
filesystem from within SPL. Support for the underlying block
|
|
device (e.g. MMC or USB) must be enabled separately.
|
|
|
|
config SPL_FS_SQUASHFS
|
|
bool "Support SquashFS filesystems"
|
|
select FS_SQUASHFS
|
|
help
|
|
Enable support for SquashFS filesystems with SPL. This permits
|
|
U-Boot (or Linux in Falcon mode) to be loaded from a SquashFS
|
|
filesystem from within SPL. Support for the underlying block
|
|
device (e.g. MMC or USB) must be enabled separately.
|
|
|
|
config SPL_FS_FAT
|
|
bool "Support FAT filesystems"
|
|
select FS_FAT
|
|
help
|
|
Enable support for FAT and VFAT filesystems with SPL. This
|
|
permits U-Boot (or Linux in Falcon mode) to be loaded from a FAT
|
|
filesystem from within SPL. Support for the underlying block
|
|
device (e.g. MMC or USB) must be enabled separately.
|
|
|
|
config SPL_FAT_WRITE
|
|
bool "Support write for FAT filesystems"
|
|
help
|
|
Enable write support for FAT and VFAT filesystems with SPL.
|
|
Support for the underlying block device (e.g. MMC or USB) must be
|
|
enabled separately.
|
|
|
|
config SPL_FPGA
|
|
bool "Support FPGAs"
|
|
help
|
|
Enable support for FPGAs in SPL. Field-programmable Gate Arrays
|
|
provide software-configurable hardware which is typically used to
|
|
implement peripherals (such as UARTs, LCD displays, MMC) or
|
|
accelerate custom processing functions, such as image processing
|
|
or machine learning. Sometimes it is useful to program the FPGA
|
|
as early as possible during boot, and this option can enable that
|
|
within SPL.
|
|
|
|
config SPL_GPIO
|
|
bool "Support GPIO in SPL"
|
|
help
|
|
Enable support for GPIOs (General-purpose Input/Output) in SPL.
|
|
GPIOs allow U-Boot to read the state of an input line (high or
|
|
low) and set the state of an output line. This can be used to
|
|
drive LEDs, control power to various system parts and read user
|
|
input. GPIOs can be useful in SPL to enable a 'sign-of-life' LED,
|
|
for example. Enable this option to build the drivers in
|
|
drivers/gpio as part of an SPL build.
|
|
|
|
config SPL_I2C
|
|
bool "Support I2C"
|
|
help
|
|
Enable support for the I2C (Inter-Integrated Circuit) bus in SPL.
|
|
I2C works with a clock and data line which can be driven by a
|
|
one or more masters or slaves. It is a fairly complex bus but is
|
|
widely used as it only needs two lines for communication. Speeds of
|
|
400kbps are typical but up to 3.4Mbps is supported by some
|
|
hardware. I2C can be useful in SPL to configure power management
|
|
ICs (PMICs) before raising the CPU clock speed, for example.
|
|
Enable this option to build the drivers in drivers/i2c as part of
|
|
an SPL build.
|
|
|
|
config SPL_LIBCOMMON_SUPPORT
|
|
bool "Support common libraries"
|
|
help
|
|
Enable support for common U-Boot libraries within SPL. These
|
|
libraries include common code to deal with U-Boot images,
|
|
environment and USB, for example. This option is enabled on many
|
|
boards. Enable this option to build the code in common/ as part of
|
|
an SPL build.
|
|
|
|
config SPL_LIBDISK_SUPPORT
|
|
bool "Support disk partitions"
|
|
select PARTITIONS
|
|
help
|
|
Enable support for disk partitions within SPL. 'Disk' is something
|
|
of a misnomer as it includes non-spinning media such as flash (as
|
|
used in MMC and USB sticks). Partitions provide a way for a disk
|
|
to be split up into separate regions, with a partition table placed
|
|
at the start or end which describes the location and size of each
|
|
'partition'. These partitions are typically uses as individual block
|
|
devices, typically with an EXT2 or FAT filesystem in each. This
|
|
option enables whatever partition support has been enabled in
|
|
U-Boot to also be used in SPL. It brings in the code in disk/.
|
|
|
|
config SPL_LIBGENERIC_SUPPORT
|
|
bool "Support generic libraries"
|
|
help
|
|
Enable support for generic U-Boot libraries within SPL. These
|
|
libraries include generic code to deal with device tree, hashing,
|
|
printf(), compression and the like. This option is enabled on many
|
|
boards. Enable this option to build the code in lib/ as part of an
|
|
SPL build.
|
|
|
|
config SPL_DM_MAILBOX
|
|
bool "Support Mailbox"
|
|
help
|
|
Enable support for Mailbox within SPL. This enable the inter
|
|
processor communication protocols tobe used within SPL. Enable
|
|
this option to build the drivers in drivers/mailbox as part of
|
|
SPL build.
|
|
|
|
config SPL_MMC
|
|
bool "Support MMC"
|
|
depends on MMC
|
|
select HAVE_BLOCK_DEVICE
|
|
help
|
|
Enable support for MMC (Multimedia Card) within SPL. This enables
|
|
the MMC protocol implementation and allows any enabled drivers to
|
|
be used within SPL. MMC can be used with or without disk partition
|
|
support depending on the application (SPL_LIBDISK_SUPPORT). Enable
|
|
this option to build the drivers in drivers/mmc as part of an SPL
|
|
build.
|
|
|
|
config SYS_MMCSD_FS_BOOT_PARTITION
|
|
int "MMC Boot Partition"
|
|
default 1
|
|
help
|
|
Partition on the MMC to load U-Boot from when the MMC is being
|
|
used in fs mode.
|
|
Use -1 as a special value to use the first bootable partition.
|
|
|
|
config SPL_MMC_TINY
|
|
bool "Tiny MMC framework in SPL"
|
|
depends on SPL_MMC
|
|
help
|
|
Enable MMC framework tinification support. This option is useful if
|
|
if your SPL is extremely size constrained. Heed the warning, enable
|
|
this option if and only if you know exactly what you are doing, if
|
|
you are reading this help text, you most likely have no idea :-)
|
|
|
|
The MMC framework is reduced to bare minimum to be useful. No malloc
|
|
support is needed for the MMC framework operation with this option
|
|
enabled. The framework supports exactly one MMC device and exactly
|
|
one MMC driver. The MMC driver can be adjusted to avoid any malloc
|
|
operations too, which can remove the need for malloc support in SPL
|
|
and thus further reduce footprint.
|
|
|
|
config SPL_MMC_WRITE
|
|
bool "MMC/SD/SDIO card support for write operations in SPL"
|
|
depends on SPL_MMC
|
|
help
|
|
Enable write access to MMC and SD Cards in SPL
|
|
|
|
|
|
config SPL_MPC8XXX_INIT_DDR
|
|
bool "Support MPC8XXX DDR init"
|
|
help
|
|
Enable support for DDR-SDRAM (double-data-rate synchronous dynamic
|
|
random-access memory) on the MPC8XXX family within SPL. This
|
|
allows DRAM to be set up before loading U-Boot into that DRAM,
|
|
where it can run.
|
|
|
|
config SPL_MTD_SUPPORT
|
|
bool "Support MTD drivers"
|
|
help
|
|
Enable support for MTD (Memory Technology Device) within SPL. MTD
|
|
provides a block interface over raw NAND and can also be used with
|
|
SPI flash. This allows SPL to load U-Boot from supported MTD
|
|
devices. See SPL_NAND_SUPPORT and SPL_ONENAND_SUPPORT for how
|
|
to enable specific MTD drivers.
|
|
|
|
config SPL_MUSB_NEW
|
|
bool "Support new Mentor Graphics USB"
|
|
help
|
|
Enable support for Mentor Graphics USB in SPL. This is a new
|
|
driver used by some boards. Enable this option to build
|
|
the drivers in drivers/usb/musb-new as part of an SPL build. The
|
|
old drivers are in drivers/usb/musb.
|
|
|
|
config SPL_NAND_SUPPORT
|
|
bool "Support NAND flash"
|
|
help
|
|
Enable support for NAND (Negative AND) flash in SPL. NAND flash
|
|
can be used to allow SPL to load U-Boot from supported devices.
|
|
This enables the drivers in drivers/mtd/nand/raw as part of an SPL
|
|
build.
|
|
|
|
config SPL_NAND_DRIVERS
|
|
bool "Use standard NAND driver"
|
|
help
|
|
SPL uses normal NAND drivers, not minimal drivers.
|
|
|
|
config SPL_NAND_ECC
|
|
bool "Include standard software ECC in the SPL"
|
|
|
|
config SPL_NAND_SIMPLE
|
|
bool "Support simple NAND drivers in SPL"
|
|
help
|
|
Support for NAND boot using simple NAND drivers that
|
|
expose the cmd_ctrl() interface.
|
|
|
|
config SPL_NAND_BASE
|
|
depends on SPL_NAND_DRIVERS
|
|
bool "Use Base NAND Driver"
|
|
help
|
|
Include nand_base.c in the SPL.
|
|
|
|
config SPL_NAND_IDENT
|
|
depends on SPL_NAND_BASE
|
|
bool "Use chip ID to identify NAND flash"
|
|
help
|
|
SPL uses the chip ID list to identify the NAND flash.
|
|
|
|
config SPL_UBI
|
|
bool "Support UBI"
|
|
help
|
|
Enable support for loading payloads from UBI. See
|
|
README.ubispl for more info.
|
|
|
|
if SPL_DM
|
|
config SPL_DM_SPI
|
|
bool "Support SPI DM drivers in SPL"
|
|
help
|
|
Enable support for SPI DM drivers in SPL.
|
|
|
|
config SPL_DM_SPI_FLASH
|
|
bool "Support SPI DM FLASH drivers in SPL"
|
|
help
|
|
Enable support for SPI DM flash drivers in SPL.
|
|
|
|
endif
|
|
if SPL_UBI
|
|
config SPL_UBI_LOAD_BY_VOLNAME
|
|
bool "Support loading volumes by name"
|
|
help
|
|
This enables support for loading UBI volumes by name. When this
|
|
is set, CONFIG_SPL_UBI_LOAD_MONITOR_VOLNAME can be used to
|
|
configure the volume name from which to load U-Boot.
|
|
|
|
config SPL_UBI_MAX_VOL_LEBS
|
|
int "Maximum number of LEBs per volume"
|
|
depends on SPL_UBI
|
|
help
|
|
The maximum number of logical eraseblocks which a static volume
|
|
to load can contain. Used for sizing the scan data structure.
|
|
|
|
config SPL_UBI_MAX_PEB_SIZE
|
|
int "Maximum PEB size"
|
|
depends on SPL_UBI
|
|
help
|
|
The maximum physical erase block size.
|
|
|
|
config SPL_UBI_MAX_PEBS
|
|
int "Maximum number of PEBs"
|
|
depends on SPL_UBI
|
|
help
|
|
The maximum physical erase block size. If not overridden by
|
|
board code, this value will be used as the actual number of PEBs.
|
|
|
|
config SPL_UBI_PEB_OFFSET
|
|
int "Offset to first UBI PEB"
|
|
depends on SPL_UBI
|
|
help
|
|
The offset in number of PEBs from the start of flash to the first
|
|
PEB part of the UBI image.
|
|
|
|
config SPL_UBI_VID_OFFSET
|
|
int "Offset to VID header"
|
|
depends on SPL_UBI
|
|
|
|
config SPL_UBI_LEB_START
|
|
int "Offset to LEB in PEB"
|
|
depends on SPL_UBI
|
|
help
|
|
The offset in bytes to the LEB within a PEB.
|
|
|
|
config SPL_UBI_INFO_ADDR
|
|
hex "Address to place UBI scan info"
|
|
depends on SPL_UBI
|
|
help
|
|
Address for ubispl to place the scan info. Read README.ubispl to
|
|
determine the required size
|
|
|
|
config SPL_UBI_VOL_IDS
|
|
int "Maximum volume id"
|
|
depends on SPL_UBI
|
|
help
|
|
The maximum volume id which can be loaded. Used for sizing the
|
|
scan data structure.
|
|
|
|
config SPL_UBI_LOAD_MONITOR_ID
|
|
int "id of U-Boot volume"
|
|
depends on SPL_UBI
|
|
help
|
|
The UBI volume id from which to load U-Boot
|
|
|
|
config SPL_UBI_LOAD_MONITOR_VOLNAME
|
|
string "volume name of U-Boot volume"
|
|
depends on SPL_UBI_LOAD_BY_VOLNAME
|
|
help
|
|
The UBI volume name from which to load U-Boot
|
|
|
|
config SPL_UBI_LOAD_KERNEL_ID
|
|
int "id of kernel volume"
|
|
depends on SPL_OS_BOOT && SPL_UBI
|
|
help
|
|
The UBI volume id from which to load the kernel
|
|
|
|
config SPL_UBI_LOAD_ARGS_ID
|
|
int "id of kernel args volume"
|
|
depends on SPL_OS_BOOT && SPL_UBI
|
|
help
|
|
The UBI volume id from which to load the device tree
|
|
|
|
config UBI_SPL_SILENCE_MSG
|
|
bool "silence UBI SPL messages"
|
|
help
|
|
Disable messages from UBI SPL. This leaves warnings
|
|
and errors enabled.
|
|
|
|
endif # if SPL_UBI
|
|
|
|
config SPL_NET
|
|
bool "Support networking"
|
|
help
|
|
Enable support for network devices (such as Ethernet) in SPL.
|
|
This permits SPL to load U-Boot over a network link rather than
|
|
from an on-board peripheral. Environment support is required since
|
|
the network stack uses a number of environment variables. See also
|
|
SPL_ETH.
|
|
|
|
if SPL_NET
|
|
config SPL_NET_VCI_STRING
|
|
string "BOOTP Vendor Class Identifier string sent by SPL"
|
|
help
|
|
As defined by RFC 2132 the vendor class identifier field can be
|
|
sent by the client to identify the vendor type and configuration
|
|
of a client. This is often used in practice to allow for the DHCP
|
|
server to specify different files to load depending on if the ROM,
|
|
SPL or U-Boot itself makes the request
|
|
endif # if SPL_NET
|
|
|
|
config SPL_NO_CPU_SUPPORT
|
|
bool "Drop CPU code in SPL"
|
|
help
|
|
This is specific to the ARM926EJ-S CPU. It disables the standard
|
|
start.S start-up code, presumably so that a replacement can be
|
|
used on that CPU. You should not enable it unless you know what
|
|
you are doing.
|
|
|
|
config SPL_NOR_SUPPORT
|
|
bool "Support NOR flash"
|
|
help
|
|
Enable support for loading U-Boot from memory-mapped NOR (Negative
|
|
OR) flash in SPL. NOR flash is slow to write but fast to read, and
|
|
a memory-mapped device makes it very easy to access. Loading from
|
|
NOR is typically achieved with just a memcpy().
|
|
|
|
config SPL_XIP_SUPPORT
|
|
bool "Support XIP"
|
|
depends on SPL
|
|
help
|
|
Enable support for execute in place of U-Boot or kernel image. There
|
|
is no need to copy image from flash to ram if flash supports execute
|
|
in place. Its very useful in systems having enough flash but not
|
|
enough ram to load the image.
|
|
|
|
config SPL_ONENAND_SUPPORT
|
|
bool "Support OneNAND flash"
|
|
help
|
|
Enable support for OneNAND (Negative AND) flash in SPL. OneNAND is
|
|
a type of NAND flash and therefore can be used to allow SPL to
|
|
load U-Boot from supported devices. This enables the drivers in
|
|
drivers/mtd/onenand as part of an SPL build.
|
|
|
|
config SPL_OS_BOOT
|
|
bool "Activate Falcon Mode"
|
|
depends on !TI_SECURE_DEVICE
|
|
help
|
|
Enable booting directly to an OS from SPL.
|
|
for more info read doc/README.falcon
|
|
|
|
if SPL_OS_BOOT
|
|
config SYS_OS_BASE
|
|
hex "addr, where OS is found"
|
|
depends on SPL_NOR_SUPPORT
|
|
help
|
|
Specify the address, where the OS image is found, which
|
|
gets booted.
|
|
|
|
endif # SPL_OS_BOOT
|
|
|
|
config SPL_FALCON_BOOT_MMCSD
|
|
bool "Enable Falcon boot from MMC or SD media"
|
|
depends on SPL_OS_BOOT && SPL_MMC
|
|
help
|
|
Select this if the Falcon mode OS image mode is on MMC or SD media.
|
|
|
|
config SYS_MMCSD_RAW_MODE_KERNEL_SECTOR
|
|
hex "Falcon mode: Sector to load kernel uImage from MMC"
|
|
depends on SPL_FALCON_BOOT_MMCSD
|
|
help
|
|
When Falcon mode is used with an MMC or SD media, SPL needs to know
|
|
where to look for the kernel uImage. The image is expected to begin
|
|
at the raw MMC specified in this config.
|
|
Note that the Falcon mode image can also be a FIT, if FIT support is
|
|
enabled.
|
|
|
|
config SPL_PAYLOAD
|
|
string "SPL payload"
|
|
default "tpl/u-boot-with-tpl.bin" if TPL
|
|
default "u-boot.bin"
|
|
help
|
|
Payload for SPL boot. For backward compatibility, default to
|
|
u-boot.bin, i.e. RAW image without any header. In case of
|
|
TPL, tpl/u-boot-with-tpl.bin. For new boards, suggest to
|
|
use u-boot.img.
|
|
|
|
config SPL_PCI
|
|
bool "Support PCI drivers"
|
|
help
|
|
Enable support for PCI in SPL. For platforms that need PCI to boot,
|
|
or must perform some init using PCI in SPL, this provides the
|
|
necessary driver support. This enables the drivers in drivers/pci
|
|
as part of an SPL build.
|
|
|
|
config SPL_PCH
|
|
bool "Support PCH drivers"
|
|
help
|
|
Enable support for PCH (Platform Controller Hub) devices in SPL.
|
|
These are used to set up GPIOs and the SPI peripheral early in
|
|
boot. This enables the drivers in drivers/pch as part of an SPL
|
|
build.
|
|
|
|
config SPL_POST_MEM_SUPPORT
|
|
bool "Support POST drivers"
|
|
help
|
|
Enable support for POST (Power-on Self Test) in SPL. POST is a
|
|
procedure that checks that the hardware (CPU or board) appears to
|
|
be functionally correctly. It is a sanity check that can be
|
|
performed before booting. This enables the drivers in post/drivers
|
|
as part of an SPL build.
|
|
|
|
config SPL_DM_RESET
|
|
bool "Support reset drivers"
|
|
depends on SPL
|
|
help
|
|
Enable support for reset control in SPL.
|
|
That can be useful in SPL to handle IP reset in driver, as in U-Boot,
|
|
by using the generic reset API provided by driver model.
|
|
This enables the drivers in drivers/reset as part of an SPL build.
|
|
|
|
config SPL_POWER
|
|
bool "Support power drivers"
|
|
help
|
|
Enable support for power control in SPL. This includes support
|
|
for PMICs (Power-management Integrated Circuits) and some of the
|
|
features provided by PMICs. In particular, voltage regulators can
|
|
be used to enable/disable power and vary its voltage. That can be
|
|
useful in SPL to turn on boot peripherals and adjust CPU voltage
|
|
so that the clock speed can be increased. This enables the drivers
|
|
in drivers/power, drivers/power/pmic and drivers/power/regulator
|
|
as part of an SPL build.
|
|
|
|
config SPL_POWER_DOMAIN
|
|
bool "Support power domain drivers"
|
|
select SPL_POWER
|
|
help
|
|
Enable support for power domain control in SPL. Many SoCs allow
|
|
power to be applied to or removed from portions of the SoC (power
|
|
domains). This may be used to save power. This API provides the
|
|
means to control such power management hardware. This enables
|
|
the drivers in drivers/power/domain as part of a SPL build.
|
|
|
|
config SPL_RAM_SUPPORT
|
|
bool "Support booting from RAM"
|
|
default y if MICROBLAZE || ARCH_SOCFPGA || ARCH_TEGRA || ARCH_ZYNQ
|
|
help
|
|
Enable booting of an image in RAM. The image can be preloaded or
|
|
it can be loaded by SPL directly into RAM (e.g. using USB).
|
|
|
|
config SPL_RAM_DEVICE
|
|
bool "Support booting from preloaded image in RAM"
|
|
depends on SPL_RAM_SUPPORT
|
|
default y if MICROBLAZE || ARCH_SOCFPGA || ARCH_TEGRA || ARCH_ZYNQ
|
|
help
|
|
Enable booting of an image already loaded in RAM. The image has to
|
|
be already in memory when SPL takes over, e.g. loaded by the boot
|
|
ROM.
|
|
|
|
config SPL_REMOTEPROC
|
|
bool "Support REMOTEPROCS"
|
|
help
|
|
Enable support for REMOTEPROCs in SPL. This permits to load
|
|
a remote processor firmware in SPL.
|
|
|
|
config SPL_RTC
|
|
bool "Support RTC drivers"
|
|
help
|
|
Enable RTC (Real-time Clock) support in SPL. This includes support
|
|
for reading and setting the time. Some RTC devices also have some
|
|
non-volatile (battery-backed) memory which is accessible if
|
|
needed. This enables the drivers in drivers/rtc as part of an SPL
|
|
build.
|
|
|
|
config SPL_SATA
|
|
bool "Support loading from SATA"
|
|
help
|
|
Enable support for SATA (Serial AT attachment) in SPL. This allows
|
|
use of SATA devices such as hard drives and flash drivers for
|
|
loading U-Boot. SATA is used in higher-end embedded systems and
|
|
can provide higher performance than MMC , at somewhat higher
|
|
expense and power consumption. This enables loading from SATA
|
|
using a configured device.
|
|
|
|
config SPL_SATA_RAW_U_BOOT_USE_SECTOR
|
|
bool "SATA raw mode: by sector"
|
|
depends on SPL_SATA
|
|
default y if ARCH_MVEBU
|
|
help
|
|
Use sector number for specifying U-Boot location on SATA disk in
|
|
raw mode.
|
|
|
|
config SPL_SATA_RAW_U_BOOT_SECTOR
|
|
hex "Sector on the SATA disk to load U-Boot from"
|
|
depends on SPL_SATA_RAW_U_BOOT_USE_SECTOR
|
|
default 0x1 if ARCH_MVEBU
|
|
help
|
|
Sector on the SATA disk to load U-Boot from, when the SATA disk is being
|
|
used in raw mode. Units: SATA disk sectors (1 sector = 512 bytes).
|
|
|
|
config SPL_SERIAL
|
|
bool "Support serial"
|
|
select SPL_PRINTF
|
|
select SPL_STRTO
|
|
help
|
|
Enable support for serial in SPL. This allows use of a serial UART
|
|
for displaying messages while SPL is running. It also brings in
|
|
printf() and panic() functions. This should normally be enabled
|
|
unless there are space reasons not to. Even then, consider
|
|
enabling SPL_USE_TINY_PRINTF which is a small printf() version.
|
|
|
|
config SPL_SPI
|
|
bool "Support SPI drivers"
|
|
help
|
|
Enable support for using SPI in SPL. This is used for connecting
|
|
to SPI flash for loading U-Boot. See SPL_SPI_FLASH_SUPPORT for
|
|
more details on that. The SPI driver provides the transport for
|
|
data between the SPI flash and the CPU. This option can be used to
|
|
enable SPI drivers that are needed for other purposes also, such
|
|
as a SPI PMIC.
|
|
|
|
config SPL_SPI_FLASH_SUPPORT
|
|
bool "Support SPI flash drivers"
|
|
depends on SPL_SPI
|
|
help
|
|
Enable support for using SPI flash in SPL, and loading U-Boot from
|
|
SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
|
|
the SPI bus that is used to connect it to a system. It is a simple
|
|
but fast bidirectional 4-wire bus (clock, chip select and two data
|
|
lines). This enables the drivers in drivers/mtd/spi as part of an
|
|
SPL build. This normally requires SPL_SPI.
|
|
|
|
if SPL_SPI_FLASH_SUPPORT
|
|
|
|
config SPL_SPI_FLASH_TINY
|
|
bool "Enable low footprint SPL SPI Flash support"
|
|
depends on !SPI_FLASH_BAR
|
|
default y if SPI_FLASH
|
|
help
|
|
Enable lightweight SPL SPI Flash support that supports just reading
|
|
data/images from flash. No support to write/erase flash. Enable
|
|
this if you have SPL size limitations and don't need full
|
|
fledged SPI flash support.
|
|
|
|
config SPL_SPI_FLASH_SFDP_SUPPORT
|
|
bool "SFDP table parsing support for SPI NOR flashes"
|
|
depends on !SPI_FLASH_BAR && !SPL_SPI_FLASH_TINY
|
|
help
|
|
Enable support for parsing and auto discovery of parameters for
|
|
SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP)
|
|
tables as per JESD216 standard in SPL.
|
|
|
|
config SPL_SPI_FLASH_MTD
|
|
bool "Support for SPI flash MTD drivers in SPL"
|
|
help
|
|
Enable support for SPI flash MTD drivers in SPL.
|
|
|
|
config SPL_SPI_LOAD
|
|
bool "Support loading from SPI flash"
|
|
help
|
|
Enable support for loading next stage, U-Boot or otherwise, from
|
|
SPI NOR in U-Boot SPL.
|
|
|
|
endif # SPL_SPI_FLASH_SUPPORT
|
|
|
|
config SYS_SPI_U_BOOT_OFFS
|
|
hex "address of u-boot payload in SPI flash"
|
|
default 0x8000 if ARCH_SUNXI
|
|
default 0x0
|
|
depends on SPL_SPI_LOAD || SPL_SPI_SUNXI
|
|
help
|
|
Address within SPI-Flash from where the u-boot payload is fetched
|
|
from.
|
|
|
|
config SPL_THERMAL
|
|
bool "Driver support for thermal devices"
|
|
help
|
|
Enable support for temperature-sensing devices. Some SoCs have on-chip
|
|
temperature sensors to permit warnings, speed throttling or even
|
|
automatic power-off when the temperature gets too high or low. Other
|
|
devices may be discrete but connected on a suitable bus.
|
|
|
|
config SPL_USB_HOST
|
|
bool "Support USB host drivers"
|
|
select HAVE_BLOCK_DEVICE
|
|
help
|
|
Enable access to USB (Universal Serial Bus) host devices so that
|
|
SPL can load U-Boot from a connected USB peripheral, such as a USB
|
|
flash stick. While USB takes a little longer to start up than most
|
|
buses, it is very flexible since many different types of storage
|
|
device can be attached. This option enables the drivers in
|
|
drivers/usb/host as part of an SPL build.
|
|
|
|
config SPL_USB_STORAGE
|
|
bool "Support loading from USB"
|
|
depends on SPL_USB_HOST && !(BLK && !DM_USB)
|
|
help
|
|
Enable support for USB devices in SPL. This allows use of USB
|
|
devices such as hard drives and flash drivers for loading U-Boot.
|
|
The actual drivers are enabled separately using the normal U-Boot
|
|
config options. This enables loading from USB using a configured
|
|
device.
|
|
|
|
config SPL_USB_GADGET
|
|
bool "Suppport USB Gadget drivers"
|
|
help
|
|
Enable USB Gadget API which allows to enable USB device functions
|
|
in SPL.
|
|
|
|
if SPL_USB_GADGET
|
|
|
|
config SPL_USB_ETHER
|
|
bool "Support USB Ethernet drivers"
|
|
depends on SPL_NET
|
|
help
|
|
Enable access to the USB network subsystem and associated
|
|
drivers in SPL. This permits SPL to load U-Boot over a
|
|
USB-connected Ethernet link (such as a USB Ethernet dongle) rather
|
|
than from an onboard peripheral. Environment support is required
|
|
since the network stack uses a number of environment variables.
|
|
See also SPL_NET and SPL_ETH.
|
|
|
|
config SPL_DFU
|
|
bool "Support DFU (Device Firmware Upgrade)"
|
|
select SPL_HASH
|
|
select SPL_DFU_NO_RESET
|
|
depends on SPL_RAM_SUPPORT
|
|
help
|
|
This feature enables the DFU (Device Firmware Upgrade) in SPL with
|
|
RAM memory device support. The ROM code will load and execute
|
|
the SPL built with dfu. The user can load binaries (u-boot/kernel) to
|
|
selected device partition from host-pc using dfu-utils.
|
|
This feature is useful to flash the binaries to factory or bare-metal
|
|
boards using USB interface.
|
|
|
|
choice
|
|
bool "DFU device selection"
|
|
depends on SPL_DFU
|
|
|
|
config SPL_DFU_RAM
|
|
bool "RAM device"
|
|
depends on SPL_DFU && SPL_RAM_SUPPORT
|
|
help
|
|
select RAM/DDR memory device for loading binary images
|
|
(u-boot/kernel) to the selected device partition using
|
|
DFU and execute the u-boot/kernel from RAM.
|
|
|
|
endchoice
|
|
|
|
config SPL_USB_SDP_SUPPORT
|
|
bool "Support SDP (Serial Download Protocol)"
|
|
depends on SPL_SERIAL
|
|
help
|
|
Enable Serial Download Protocol (SDP) device support in SPL. This
|
|
allows to download images into memory and execute (jump to) them
|
|
using the same protocol as implemented by the i.MX family's boot ROM.
|
|
|
|
config SPL_SDP_USB_DEV
|
|
int "SDP USB controller index"
|
|
default 0
|
|
depends on SPL_USB_SDP_SUPPORT
|
|
help
|
|
Some boards have USB controller other than 0. Define this option
|
|
so it can be used in compiled environment.
|
|
endif
|
|
|
|
config SPL_WATCHDOG
|
|
bool "Support watchdog drivers"
|
|
imply SPL_WDT if !HW_WATCHDOG
|
|
help
|
|
Enable support for watchdog drivers in SPL. A watchdog is
|
|
typically a hardware peripheral which can reset the system when it
|
|
detects no activity for a while (such as a software crash). This
|
|
enables the drivers in drivers/watchdog as part of an SPL build.
|
|
|
|
config SPL_YMODEM_SUPPORT
|
|
bool "Support loading using Ymodem"
|
|
depends on SPL_SERIAL
|
|
help
|
|
While loading from serial is slow it can be a useful backup when
|
|
there is no other option. The Ymodem protocol provides a reliable
|
|
means of transmitting U-Boot over a serial line for using in SPL,
|
|
with a checksum to ensure correctness.
|
|
|
|
config SPL_ATF
|
|
bool "Support ARM Trusted Firmware"
|
|
depends on ARM64 && SPL_FIT
|
|
help
|
|
ATF(ARM Trusted Firmware) is a component for ARM AArch64 which
|
|
is loaded by SPL (which is considered as BL2 in ATF terminology).
|
|
More detail at: https://github.com/ARM-software/arm-trusted-firmware
|
|
|
|
config SPL_ATF_LOAD_IMAGE_V2
|
|
bool "Use the new LOAD_IMAGE_V2 parameter passing"
|
|
depends on SPL_ATF
|
|
help
|
|
Some platforms use the newer LOAD_IMAGE_V2 parameter passing.
|
|
|
|
If you want to load a bl31 image from the SPL and need the new
|
|
method, say Y.
|
|
|
|
config SPL_ATF_NO_PLATFORM_PARAM
|
|
bool "Pass no platform parameter"
|
|
depends on SPL_ATF
|
|
help
|
|
While we expect to call a pointer to a valid FDT (or NULL)
|
|
as the platform parameter to an ATF, some ATF versions are
|
|
not U-Boot aware and have an insufficiently robust parameter
|
|
validation to gracefully reject a FDT being passed.
|
|
|
|
If this option is enabled, the spl_atf os-type handler will
|
|
always pass NULL for the platform parameter.
|
|
|
|
If your ATF is affected, say Y.
|
|
|
|
config SPL_AM33XX_ENABLE_RTC32K_OSC
|
|
bool "Enable the RTC32K OSC on AM33xx based platforms"
|
|
default y if AM33XX
|
|
help
|
|
Enable access to the AM33xx RTC and select the external 32kHz clock
|
|
source.
|
|
|
|
config SPL_OPTEE_IMAGE
|
|
bool "Support OP-TEE Trusted OS image in SPL"
|
|
depends on ARM
|
|
help
|
|
OP-TEE is an open source Trusted OS which is loaded by SPL.
|
|
More detail at: https://github.com/OP-TEE/optee_os
|
|
|
|
config SPL_OPENSBI
|
|
bool "Support RISC-V OpenSBI"
|
|
depends on RISCV && SPL_RISCV_MMODE && RISCV_SMODE
|
|
help
|
|
OpenSBI is an open-source implementation of the RISC-V Supervisor Binary
|
|
Interface (SBI) specification. U-Boot supports the OpenSBI FW_DYNAMIC
|
|
firmware. It is loaded and started by U-Boot SPL.
|
|
|
|
More details are available at https://github.com/riscv/opensbi and
|
|
https://github.com/riscv/riscv-sbi-doc
|
|
|
|
config SPL_OPENSBI_LOAD_ADDR
|
|
hex "OpenSBI load address"
|
|
depends on SPL_OPENSBI
|
|
help
|
|
Load address of the OpenSBI binary.
|
|
|
|
config TPL
|
|
bool
|
|
depends on SUPPORT_TPL
|
|
prompt "Enable TPL"
|
|
help
|
|
If you want to build TPL as well as the normal image and SPL, say Y.
|
|
|
|
if TPL
|
|
|
|
config TPL_SIZE_LIMIT
|
|
hex "Maximum size of TPL image"
|
|
depends on TPL
|
|
default 0x0
|
|
help
|
|
Specifies the maximum length of the U-Boot TPL image.
|
|
If this value is zero, it is ignored.
|
|
|
|
config TPL_BINMAN_SYMBOLS
|
|
bool "Declare binman symbols in TPL"
|
|
depends on SPL_FRAMEWORK && BINMAN
|
|
default y
|
|
help
|
|
This enables use of symbols in TPL which refer to U-Boot, enabling TPL
|
|
to obtain the location of U-Boot simply by calling spl_get_image_pos()
|
|
and spl_get_image_size().
|
|
|
|
For this to work, you must have a U-Boot image in the binman image, so
|
|
binman can update TPL with the location of it.
|
|
|
|
config TPL_FRAMEWORK
|
|
bool "Support TPL based upon the common SPL framework"
|
|
default y if SPL_FRAMEWORK
|
|
help
|
|
Enable the SPL framework under common/spl/ for TPL builds.
|
|
This framework supports MMC, NAND and YMODEM and other methods
|
|
loading of U-Boot's SPL stage. If unsure, say Y.
|
|
|
|
config TPL_HANDOFF
|
|
bool "Pass hand-off information from TPL to SPL and U-Boot proper"
|
|
depends on HANDOFF && TPL_BLOBLIST
|
|
default y
|
|
help
|
|
This option enables TPL to write handoff information. This can be
|
|
used to pass information like the size of SDRAM from TPL to U-Boot
|
|
proper. The information is also available to SPL if it is useful
|
|
there.
|
|
|
|
config TPL_BOARD_INIT
|
|
bool "Call board-specific initialization in TPL"
|
|
help
|
|
If this option is enabled, U-Boot will call the function
|
|
spl_board_init() from board_init_r(). This function should be
|
|
provided by the board.
|
|
|
|
config TPL_BOOTCOUNT_LIMIT
|
|
bool "Support bootcount in TPL"
|
|
depends on TPL_ENV_SUPPORT
|
|
help
|
|
If this option is enabled, the TPL will support bootcount.
|
|
For example, it may be useful to choose the device to boot.
|
|
|
|
config TPL_LDSCRIPT
|
|
string "Linker script for the TPL stage"
|
|
depends on TPL
|
|
default "arch/arm/cpu/armv8/u-boot-spl.lds" if ARM64
|
|
default "arch/\$(ARCH)/cpu/u-boot-spl.lds"
|
|
help
|
|
The TPL stage will usually require a different linker-script
|
|
(as it runs from a different memory region) than the regular
|
|
U-Boot stage. Set this to the path of the linker-script to
|
|
be used for TPL.
|
|
|
|
May be left empty to trigger the Makefile infrastructure to
|
|
fall back to the linker-script used for the SPL stage.
|
|
|
|
config TPL_NEEDS_SEPARATE_STACK
|
|
bool "TPL needs a separate initial stack-pointer"
|
|
depends on TPL
|
|
help
|
|
Enable, if the TPL stage should not inherit its initial
|
|
stack-pointer from the settings for the SPL stage.
|
|
|
|
config TPL_POWER
|
|
bool "Support power drivers"
|
|
help
|
|
Enable support for power control in TPL. This includes support
|
|
for PMICs (Power-management Integrated Circuits) and some of the
|
|
features provided by PMICs. In particular, voltage regulators can
|
|
be used to enable/disable power and vary its voltage. That can be
|
|
useful in TPL to turn on boot peripherals and adjust CPU voltage
|
|
so that the clock speed can be increased. This enables the drivers
|
|
in drivers/power, drivers/power/pmic and drivers/power/regulator
|
|
as part of an TPL build.
|
|
|
|
config TPL_TEXT_BASE
|
|
hex "Base address for the .text section of the TPL stage"
|
|
default 0
|
|
help
|
|
The base address for the .text section of the TPL stage.
|
|
|
|
config TPL_MAX_SIZE
|
|
int "Maximum size (in bytes) for the TPL stage"
|
|
default 0
|
|
depends on TPL
|
|
help
|
|
The maximum size (in bytes) of the TPL stage.
|
|
|
|
config TPL_STACK
|
|
hex "Address of the initial stack-pointer for the TPL stage"
|
|
depends on TPL_NEEDS_SEPARATE_STACK
|
|
help
|
|
The address of the initial stack-pointer for the TPL stage.
|
|
Usually this will be the (aligned) top-of-stack.
|
|
|
|
config TPL_READ_ONLY
|
|
bool
|
|
depends on TPL_OF_PLATDATA
|
|
select TPL_OF_PLATDATA_NO_BIND
|
|
select TPL_OF_PLATDATA_RT
|
|
help
|
|
Some platforms (e.g. x86 Apollo Lake) load SPL into a read-only
|
|
section of memory. This means that of-platdata must make a copy (in
|
|
writeable memory) of anything it wants to modify, such as
|
|
device-private data.
|
|
|
|
config TPL_BOOTROM_SUPPORT
|
|
bool "Support returning to the BOOTROM (from TPL)"
|
|
help
|
|
Some platforms (e.g. the Rockchip RK3368) provide support in their
|
|
ROM for loading the next boot-stage after performing basic setup
|
|
from the TPL stage.
|
|
|
|
Enable this option, to return to the BOOTROM through the
|
|
BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the
|
|
boot device list, if not implemented for a given board)
|
|
|
|
config TPL_CRC32
|
|
bool "Support CRC32 in TPL"
|
|
default y if TPL_ENV_SUPPORT || TPL_BLOBLIST
|
|
help
|
|
Enable this to support CRC32 in uImages or FIT images within SPL.
|
|
This is a 32-bit checksum value that can be used to verify images.
|
|
For FIT images, this is the least secure type of checksum, suitable
|
|
for detected accidental image corruption. For secure applications you
|
|
should consider SHA1 or SHA256.
|
|
|
|
config TPL_DRIVERS_MISC
|
|
bool "Support misc drivers in TPL"
|
|
help
|
|
Enable miscellaneous drivers in TPL. These drivers perform various
|
|
tasks that don't fall nicely into other categories, Enable this
|
|
option to build the drivers in drivers/misc as part of an TPL
|
|
build, for those that support building in TPL (not all drivers do).
|
|
|
|
config TPL_ENV_SUPPORT
|
|
bool "Support an environment"
|
|
help
|
|
Enable environment support in TPL. See SPL_ENV_SUPPORT for details.
|
|
|
|
config TPL_GPIO
|
|
bool "Support GPIO in TPL"
|
|
help
|
|
Enable support for GPIOs (General-purpose Input/Output) in TPL.
|
|
GPIOs allow U-Boot to read the state of an input line (high or
|
|
low) and set the state of an output line. This can be used to
|
|
drive LEDs, control power to various system parts and read user
|
|
input. GPIOs can be useful in TPL to enable a 'sign-of-life' LED,
|
|
for example. Enable this option to build the drivers in
|
|
drivers/gpio as part of an TPL build.
|
|
|
|
config TPL_I2C
|
|
bool "Support I2C"
|
|
help
|
|
Enable support for the I2C bus in TPL. See SPL_I2C for
|
|
details.
|
|
|
|
config TPL_LIBCOMMON_SUPPORT
|
|
bool "Support common libraries"
|
|
help
|
|
Enable support for common U-Boot libraries within TPL. See
|
|
SPL_LIBCOMMON_SUPPORT for details.
|
|
|
|
config TPL_LIBGENERIC_SUPPORT
|
|
bool "Support generic libraries"
|
|
help
|
|
Enable support for generic U-Boot libraries within TPL. See
|
|
SPL_LIBGENERIC_SUPPORT for details.
|
|
|
|
config TPL_MPC8XXX_INIT_DDR
|
|
bool "Support MPC8XXX DDR init"
|
|
help
|
|
Enable support for DDR-SDRAM on the MPC8XXX family within TPL. See
|
|
SPL_MPC8XXX_INIT_DDR for details.
|
|
|
|
config TPL_MMC
|
|
bool "Support MMC"
|
|
depends on MMC
|
|
help
|
|
Enable support for MMC within TPL. See SPL_MMC for details.
|
|
|
|
config TPL_NAND_SUPPORT
|
|
bool "Support NAND flash"
|
|
help
|
|
Enable support for NAND in TPL. See SPL_NAND_SUPPORT for details.
|
|
|
|
config TPL_PCI
|
|
bool "Support PCI drivers"
|
|
help
|
|
Enable support for PCI in TPL. For platforms that need PCI to boot,
|
|
or must perform some init using PCI in SPL, this provides the
|
|
necessary driver support. This enables the drivers in drivers/pci
|
|
as part of a TPL build.
|
|
|
|
config TPL_PCH
|
|
bool "Support PCH drivers"
|
|
help
|
|
Enable support for PCH (Platform Controller Hub) devices in TPL.
|
|
These are used to set up GPIOs and the SPI peripheral early in
|
|
boot. This enables the drivers in drivers/pch as part of a TPL
|
|
build.
|
|
|
|
config TPL_RAM_SUPPORT
|
|
bool "Support booting from RAM"
|
|
help
|
|
Enable booting of an image in RAM. The image can be preloaded or
|
|
it can be loaded by TPL directly into RAM (e.g. using USB).
|
|
|
|
config TPL_RAM_DEVICE
|
|
bool "Support booting from preloaded image in RAM"
|
|
depends on TPL_RAM_SUPPORT
|
|
help
|
|
Enable booting of an image already loaded in RAM. The image has to
|
|
be already in memory when TPL takes over, e.g. loaded by the boot
|
|
ROM.
|
|
|
|
config TPL_RTC
|
|
bool "Support RTC drivers"
|
|
help
|
|
Enable RTC (Real-time Clock) support in TPL. This includes support
|
|
for reading and setting the time. Some RTC devices also have some
|
|
non-volatile (battery-backed) memory which is accessible if
|
|
needed. This enables the drivers in drivers/rtc as part of an TPL
|
|
build.
|
|
|
|
config TPL_SERIAL
|
|
bool "Support serial"
|
|
select TPL_PRINTF
|
|
select TPL_STRTO
|
|
help
|
|
Enable support for serial in TPL. See SPL_SERIAL for
|
|
details.
|
|
|
|
config TPL_SPI_FLASH_SUPPORT
|
|
bool "Support SPI flash drivers"
|
|
help
|
|
Enable support for using SPI flash in TPL. See SPL_SPI_FLASH_SUPPORT
|
|
for details.
|
|
|
|
config TPL_SPI_FLASH_TINY
|
|
bool "Enable low footprint TPL SPI Flash support"
|
|
depends on TPL_SPI_FLASH_SUPPORT && !SPI_FLASH_BAR
|
|
default y if SPI_FLASH
|
|
help
|
|
Enable lightweight TPL SPI Flash support that supports just reading
|
|
data/images from flash. No support to write/erase flash. Enable
|
|
this if you have TPL size limitations and don't need full-fledged
|
|
SPI flash support.
|
|
|
|
config TPL_SPI_LOAD
|
|
bool "Support loading from SPI flash"
|
|
depends on TPL_SPI_FLASH_SUPPORT
|
|
help
|
|
Enable support for loading next stage, U-Boot or otherwise, from
|
|
SPI NOR in U-Boot TPL.
|
|
|
|
config TPL_SPI
|
|
bool "Support SPI drivers"
|
|
help
|
|
Enable support for using SPI in TPL. See SPL_SPI for
|
|
details.
|
|
|
|
config TPL_DM_SPI
|
|
bool "Support SPI DM drivers in TPL"
|
|
help
|
|
Enable support for SPI DM drivers in TPL.
|
|
|
|
config TPL_DM_SPI_FLASH
|
|
bool "Support SPI DM FLASH drivers in TPL"
|
|
help
|
|
Enable support for SPI DM flash drivers in TPL.
|
|
|
|
config TPL_YMODEM_SUPPORT
|
|
bool "Support loading using Ymodem"
|
|
depends on TPL_SERIAL
|
|
help
|
|
While loading from serial is slow it can be a useful backup when
|
|
there is no other option. The Ymodem protocol provides a reliable
|
|
means of transmitting U-Boot over a serial line for using in TPL,
|
|
with a checksum to ensure correctness.
|
|
|
|
endif # TPL
|
|
|
|
config VPL
|
|
bool
|
|
depends on SUPPORT_SPL
|
|
prompt "Enable VPL"
|
|
help
|
|
If you want to build VPL as well as the normal image, TPL and SPL,
|
|
say Y.
|
|
|
|
if VPL
|
|
|
|
config VPL_BANNER_PRINT
|
|
bool "Enable output of the VPL banner 'U-Boot VPL ...'"
|
|
depends on VPL
|
|
default y
|
|
help
|
|
If this option is enabled, VPL will print the banner with version
|
|
info. Disabling this option could be useful to reduce VPL boot time
|
|
(e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
|
|
|
|
config VPL_BOARD_INIT
|
|
bool "Call board-specific initialization in VPL"
|
|
help
|
|
If this option is enabled, U-Boot will call the function
|
|
spl_board_init() from board_init_r(). This function should be
|
|
provided by the board.
|
|
|
|
config VPL_CACHE
|
|
depends on CACHE
|
|
bool "Support cache drivers in VPL"
|
|
help
|
|
Enable support for cache drivers in VPL.
|
|
|
|
config VPL_CRC32
|
|
bool "Support CRC32 in VPL"
|
|
default y if VPL_ENV_SUPPORT || VPL_BLOBLIST
|
|
help
|
|
Enable this to support CRC32 in uImages or FIT images within VPL.
|
|
This is a 32-bit checksum value that can be used to verify images.
|
|
For FIT images, this is the least secure type of checksum, suitable
|
|
for detected accidental image corruption. For secure applications you
|
|
should consider SHA1 or SHA256.
|
|
|
|
config VPL_DM_SPI
|
|
bool "Support SPI DM drivers in VPL"
|
|
help
|
|
Enable support for SPI DM drivers in VPL.
|
|
|
|
config VPL_DM_SPI_FLASH
|
|
bool "Support SPI DM FLASH drivers in VPL"
|
|
help
|
|
Enable support for SPI DM flash drivers in VPL.
|
|
|
|
config VPL_FRAMEWORK
|
|
bool "Support VPL based upon the common SPL framework"
|
|
default y
|
|
help
|
|
Enable the SPL framework under common/spl/ for VPL builds.
|
|
This framework supports MMC, NAND and YMODEM and other methods
|
|
loading of U-Boot's next stage. If unsure, say Y.
|
|
|
|
config VPL_HANDOFF
|
|
bool "Pass hand-off information from VPL to SPL"
|
|
depends on HANDOFF && VPL_BLOBLIST
|
|
default y
|
|
help
|
|
This option enables VPL to write handoff information. This can be
|
|
used to pass information like the size of SDRAM from VPL to SPL. Also
|
|
VPL can receive information from TPL in the same place if that is
|
|
enabled.
|
|
|
|
config VPL_LIBCOMMON_SUPPORT
|
|
bool "Support common libraries"
|
|
default y if SPL_LIBCOMMON_SUPPORT
|
|
help
|
|
Enable support for common U-Boot libraries within VPL. See
|
|
SPL_LIBCOMMON_SUPPORT for details.
|
|
|
|
config VPL_LIBGENERIC_SUPPORT
|
|
bool "Support generic libraries"
|
|
default y if SPL_LIBGENERIC_SUPPORT
|
|
help
|
|
Enable support for generic U-Boot libraries within VPL. These
|
|
libraries include generic code to deal with device tree, hashing,
|
|
printf(), compression and the like. This option is enabled on many
|
|
boards. Enable this option to build the code in lib/ as part of a
|
|
VPL build.
|
|
|
|
config VPL_DRIVERS_MISC
|
|
bool "Support misc drivers"
|
|
default y if TPL_DRIVERS_MISC
|
|
help
|
|
Enable miscellaneous drivers in VPL. These drivers perform various
|
|
tasks that don't fall nicely into other categories, Enable this
|
|
option to build the drivers in drivers/misc as part of a VPL
|
|
build, for those that support building in VPL (not all drivers do).
|
|
|
|
config VPL_ENV_SUPPORT
|
|
bool "Support an environment"
|
|
help
|
|
Enable environment support in VPL. The U-Boot environment provides
|
|
a number of settings (essentially name/value pairs) which can
|
|
control many aspects of U-Boot's operation. Enabling this option will
|
|
make env_get() and env_set() available in VSPL.
|
|
|
|
config VPL_GPIO
|
|
bool "Support GPIO in VPL"
|
|
default y if SPL_GPIO
|
|
help
|
|
Enable support for GPIOs (General-purpose Input/Output) in VPL.
|
|
GPIOs allow U-Boot to read the state of an input line (high or
|
|
low) and set the state of an output line. This can be used to
|
|
drive LEDs, control power to various system parts and read user
|
|
input. GPIOs can be useful in VPL to enable a 'sign-of-life' LED,
|
|
for example. Enable this option to build the drivers in
|
|
drivers/gpio as part of a VPL build.
|
|
|
|
config VPL_HANDOFF
|
|
bool "Pass hand-off information from VPL to SPL and U-Boot proper"
|
|
depends on HANDOFF && VPL_BLOBLIST
|
|
default y
|
|
help
|
|
This option enables VPL to write handoff information. This can be
|
|
used to pass information like the size of SDRAM from VPL to U-Boot
|
|
proper. The information is also available to VPL if it is useful
|
|
there.
|
|
|
|
config VPL_HASH
|
|
bool "Support hashing drivers in VPL"
|
|
depends on VPL
|
|
select SHA1
|
|
select SHA256
|
|
help
|
|
Enable hashing drivers in VPL. These drivers can be used to
|
|
accelerate secure boot processing in secure applications. Enable
|
|
this option to build system-specific drivers for hash acceleration
|
|
as part of a VPL build.
|
|
|
|
config VPL_I2C_SUPPORT
|
|
bool "Support I2C in VPL"
|
|
default y if SPL_I2C_SUPPORT
|
|
help
|
|
Enable support for the I2C bus in VPL. Vee SPL_I2C_SUPPORT for
|
|
details.
|
|
|
|
config VPL_PCH_SUPPORT
|
|
bool "Support PCH drivers"
|
|
default y if TPL_PCH_SUPPORT
|
|
help
|
|
Enable support for PCH (Platform Controller Hub) devices in VPL.
|
|
These are used to set up GPIOs and the SPI peripheral early in
|
|
boot. This enables the drivers in drivers/pch as part of a VPL
|
|
build.
|
|
|
|
config VPL_PCI
|
|
bool "Support PCI drivers"
|
|
default y if SPL_PCI
|
|
help
|
|
Enable support for PCI in VPL. For platforms that need PCI to boot,
|
|
or must perform some init using PCI in VPL, this provides the
|
|
necessary driver support. This enables the drivers in drivers/pci
|
|
as part of a VPL build.
|
|
|
|
config VPL_RTC
|
|
bool "Support RTC drivers"
|
|
help
|
|
Enable RTC (Real-time Clock) support in VPL. This includes support
|
|
for reading and setting the time. Some RTC devices also have some
|
|
non-volatile (battery-backed) memory which is accessible if
|
|
needed. This enables the drivers in drivers/rtc as part of a VPL
|
|
build.
|
|
|
|
config VPL_SERIAL
|
|
bool "Support serial"
|
|
default y if TPL_SERIAL
|
|
select VPL_PRINTF
|
|
select VPL_STRTO
|
|
help
|
|
Enable support for serial in VPL. See SPL_SERIAL_SUPPORT for
|
|
details.
|
|
|
|
config VPL_SIZE_LIMIT
|
|
hex "Maximum size of VPL image"
|
|
depends on VPL
|
|
default 0x0
|
|
help
|
|
Specifies the maximum length of the U-Boot VPL image.
|
|
If this value is zero, it is ignored.
|
|
|
|
config VPL_SPI
|
|
bool "Support SPI drivers"
|
|
help
|
|
Enable support for using SPI in VPL. See SPL_SPI_SUPPORT for
|
|
details.
|
|
|
|
config VPL_SPI_FLASH_SUPPORT
|
|
bool "Support SPI flash drivers"
|
|
help
|
|
Enable support for using SPI flash in VPL, and loading U-Boot from
|
|
SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
|
|
the SPI bus that is used to connect it to a system. It is a simple
|
|
but fast bidirectional 4-wire bus (clock, chip select and two data
|
|
lines). This enables the drivers in drivers/mtd/spi as part of a
|
|
VPL build. This normally requires VPL_SPI_SUPPORT.
|
|
|
|
config VPL_TEXT_BASE
|
|
hex "VPL Text Base"
|
|
default 0x0
|
|
help
|
|
The address in memory that VPL will be running from.
|
|
|
|
endif # VPL
|
|
|
|
config SPL_AT91_MCK_BYPASS
|
|
bool "Use external clock signal as a source of main clock for AT91 platforms"
|
|
depends on ARCH_AT91
|
|
help
|
|
Use external 8 to 24 Mhz clock signal as source of main clock instead
|
|
of an external crystal oscillator.
|
|
This option disables the internal driving on the XOUT pin.
|
|
The external source has to provide a stable clock on the XIN pin.
|
|
If this option is disabled, the SoC expects a crystal oscillator
|
|
that needs driving on both XIN and XOUT lines.
|
|
|
|
endif # SPL
|
|
endmenu
|