mirror of
https://github.com/AsahiLinux/u-boot
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bccaa476f6
U-Boot names the Raspberry Pi board rpi_b. This means that the common
expression for DTB filename ${soc}-${board}.dtb expands to
bcm2835-rpi_b.dtb. However, the DTB generated by the Linux kernel is
bcm2835-rpi-b.dtb. Set $fdtfile in U-Boot's environment so that scripts
look for the correct DTB filename.
An alternative would be to rename the U-Boot board to rpi-b. However,
that change would be far more invasive, and end up affecting users (i.e
they'd have to change their U-Boot build commands).
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
183 lines
5.4 KiB
C
183 lines
5.4 KiB
C
/*
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* (C) Copyright 2012 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __CONFIG_H
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#define __CONFIG_H
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#include <asm/sizes.h>
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/* Architecture, CPU, etc.*/
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#define CONFIG_ARM1176
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#define CONFIG_BCM2835
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#define CONFIG_ARCH_CPU_INIT
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#define CONFIG_SYS_DCACHE_OFF
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/*
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* 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
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* so 2708 has historically been used rather than a dedicated 2835 ID.
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*/
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#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
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/* Memory layout */
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#define CONFIG_NR_DRAM_BANKS 1
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#define CONFIG_SYS_SDRAM_BASE 0x00000000
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#define CONFIG_SYS_TEXT_BASE 0x00008000
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#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
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/*
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* The board really has 256M. However, the VC (VideoCore co-processor) shares
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* the RAM, and uses a configurable portion at the top. We tell U-Boot that a
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* smaller amount of RAM is present in order to avoid stomping on the area
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* the VC uses.
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*/
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#define CONFIG_SYS_SDRAM_SIZE SZ_128M
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#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
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CONFIG_SYS_SDRAM_SIZE - \
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GENERATED_GBL_DATA_SIZE)
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#define CONFIG_SYS_MALLOC_LEN SZ_4M
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#define CONFIG_SYS_MEMTEST_START 0x00100000
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#define CONFIG_SYS_MEMTEST_END 0x00200000
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#define CONFIG_LOADADDR 0x00200000
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/* Flash */
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#define CONFIG_SYS_NO_FLASH
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/* Devices */
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/* GPIO */
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#define CONFIG_BCM2835_GPIO
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/* LCD */
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#define CONFIG_LCD
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#define CONFIG_LCD_DT_SIMPLEFB
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#define LCD_BPP LCD_COLOR16
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/*
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* Prevent allocation of RAM for FB; the real FB address is queried
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* dynamically from the VideoCore co-processor, and comes from RAM
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* not owned by the ARM CPU.
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*/
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#define CONFIG_FB_ADDR 0
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#define CONFIG_VIDEO_BCM2835
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#define CONFIG_SYS_WHITE_ON_BLACK
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/* SD/MMC configuration */
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#define CONFIG_GENERIC_MMC
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#define CONFIG_MMC
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#define CONFIG_SDHCI
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#define CONFIG_MMC_SDHCI_IO_ACCESSORS
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#define CONFIG_BCM2835_SDHCI
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/* Console UART */
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#define CONFIG_PL011_SERIAL
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#define CONFIG_PL011_CLOCK 3000000
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#define CONFIG_PL01x_PORTS { (void *)0x20201000 }
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#define CONFIG_CONS_INDEX 0
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#define CONFIG_BAUDRATE 115200
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/* Console configuration */
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#define CONFIG_SYS_CBSIZE 1024
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#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
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sizeof(CONFIG_SYS_PROMPT) + 16)
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/* Environment */
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#define CONFIG_ENV_SIZE SZ_16K
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#define CONFIG_ENV_IS_NOWHERE
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#define CONFIG_ENV_VARS_UBOOT_CONFIG
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#define CONFIG_SYS_LOAD_ADDR 0x1000000
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#define CONFIG_CONSOLE_MUX
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#define CONFIG_SYS_CONSOLE_IS_IN_ENV
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/*
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* Memory layout for where various images get loaded by boot scripts:
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*
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* scriptaddr can be pretty much anywhere that doesn't conflict with something
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* else. Put it low in memory to avoid conflicts.
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*
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* kernel_addr_r must be within the first 128M of RAM in order for the
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* kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
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* decompress itself to 0x8000 after the start of RAM, kernel_addr_r
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* should not overlap that area, or the kernel will have to copy itself
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* somewhere else before decompression. Similarly, the address of any other
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* data passed to the kernel shouldn't overlap the start of RAM. Pushing
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* this up to 16M allows for a sizable kernel to be decompressed below the
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* compressed load address.
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*
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* fdt_addr_r simply shouldn't overlap anything else. Choosing 32M allows for
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* the compressed kernel to be up to 16M too.
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*
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* ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
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* for the FDT/DTB to be up to 1M, which is hopefully plenty.
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*/
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#define CONFIG_EXTRA_ENV_SETTINGS \
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"stdin=serial\0" \
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"stderr=serial,lcd\0" \
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"stdout=serial,lcd\0" \
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"scriptaddr=0x00000000\0" \
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"kernel_addr_r=0x01000000\0" \
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"fdt_addr_r=0x02000000\0" \
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"fdtfile=bcm2835-rpi-b.dtb\0" \
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"ramdisk_addr_r=0x02100000\0" \
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"boot_targets=mmc0\0" \
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\
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"script_boot=" \
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"if fatload ${devtype} ${devnum}:1 " \
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"${scriptaddr} boot.scr.uimg; then " \
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"source ${scriptaddr}; " \
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"fi;\0" \
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\
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"mmc_boot=" \
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"setenv devtype mmc; " \
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"if mmc dev ${devnum}; then " \
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"run script_boot; " \
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"fi\0" \
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\
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"bootcmd_mmc0=setenv devnum 0; run mmc_boot\0" \
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#define CONFIG_BOOTCOMMAND \
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"for target in ${boot_targets}; do run bootcmd_${target}; done"
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#define CONFIG_BOOTDELAY 2
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/* Shell */
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#define CONFIG_SYS_HUSH_PARSER
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#define CONFIG_SYS_MAXARGS 8
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#define CONFIG_SYS_PROMPT "U-Boot> "
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#define CONFIG_SYS_LONGHELP
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#define CONFIG_CMDLINE_EDITING
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#define CONFIG_COMMAND_HISTORY
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#define CONFIG_AUTO_COMPLETE
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/* Commands */
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#include <config_cmd_default.h>
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#define CONFIG_CMD_BOOTZ
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#define CONFIG_CMD_GPIO
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#define CONFIG_CMD_MMC
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#define CONFIG_DOS_PARTITION
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#define CONFIG_PARTITION_UUIDS
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#define CONFIG_CMD_PART
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#define CONFIG_CMD_FS_GENERIC
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#define CONFIG_CMD_FAT
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#define CONFIG_CMD_EXT
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/* Some things don't make sense on this HW or yet */
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#undef CONFIG_CMD_FPGA
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#undef CONFIG_CMD_NET
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#undef CONFIG_CMD_NFS
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#undef CONFIG_CMD_SAVEENV
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/* Device tree support for bootm/bootz */
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#define CONFIG_OF_LIBFDT
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#define CONFIG_OF_BOARD_SETUP
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/* ATAGs support for bootm/bootz */
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#define CONFIG_SETUP_MEMORY_TAGS
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#define CONFIG_CMDLINE_TAG
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#define CONFIG_INITRD_TAG
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#endif
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