mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
f8a1b33889
U-boot is intended to replace linux kernel in android boot image(ABL), and it's FIT payload to replace initramfs file. The boot process is similar to boot image with linux: - android bootloader (ABL) unpacks android boot image - ABL sets `linux,initrd-start property` in chosen node in unpacked FDT - ABL sets x0 register to FDT address, and passes control to u-boot - u-boot reads x0 register, and stores it in `prevbl_fdt_addr` env variable - u-boot reads `linux,initrd-start` property, and stores it in `prevbl_initrd_start_addr` In this way, u-boot bootcmd relies on `prevbl_initrd_start_addr` env variable, and boils down to `bootm $prevbl_initrd_start_addr`. If more control on boot process is desired, pack a boot script in FIT image, and put it to default configuration What done: - strip unneeded config options - add FIT image support - add framebuffer node, u-boot logo and video console - increase LMB_MAX_REGIONS, to store all linux dtb reserved memory regions - add linux kernel image header Uart driver causes hang, when u-boot is used in android boot image instead of linux. Temporary disable console driver, until investigated and fixed. Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com> Cc: Ramon Fried <rfried.dev@gmail.com>
37 lines
941 B
Text
37 lines
941 B
Text
CONFIG_ARM=y
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CONFIG_SKIP_LOWLEVEL_INIT=y
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CONFIG_POSITION_INDEPENDENT=y
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CONFIG_ARCH_SNAPDRAGON=y
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CONFIG_DEFAULT_DEVICE_TREE="starqltechn"
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CONFIG_BOOTDELAY=0
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CONFIG_FIT=y
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CONFIG_FIT_VERBOSE=y
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CONFIG_TARGET_STARQLTECHN=y
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CONFIG_IDENT_STRING="\nSamsung S9 SM-G9600"
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CONFIG_SYS_LOAD_ADDR=0x80000000
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CONFIG_LMB_MAX_REGIONS=64
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# CONFIG_DISPLAY_CPUINFO is not set
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CONFIG_HUSH_PARSER=y
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CONFIG_CMD_GPIO=y
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# CONFIG_REQUIRE_SERIAL_CONSOLE is not set
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# CONFIG_NET is not set
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# CONFIG_DM_STDIO is not set
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CONFIG_CLK=y
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CONFIG_MSM_GPIO=y
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CONFIG_PM8916_GPIO=y
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CONFIG_PINCTRL=y
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CONFIG_DM_PMIC=y
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CONFIG_PMIC_PM8916=y
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# CONFIG_MSM_GENI_SERIAL is not set
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CONFIG_SPMI_MSM=y
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CONFIG_LINUX_KERNEL_IMAGE_HEADER=y
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CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR=y
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CONFIG_SAVE_PREV_BL_FDT_ADDR=y
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CONFIG_DM_VIDEO=y
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CONFIG_VIDEO_LOGO=y
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CONFIG_CMD_VIDCONSOLE=y
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CONFIG_CONSOLE_NORMAL=y
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CONFIG_SYS_WHITE_ON_BLACK=y
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CONFIG_VIDEO_DT_SIMPLEFB=y
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CONFIG_VIDEO_SIMPLE=y
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CONFIG_CMD_BMP=y
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