| /* |
| * (C) Copyright 2012 Stephen Warren |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef __CONFIG_H |
| #define __CONFIG_H |
| |
| #include <linux/sizes.h> |
| |
| /* Architecture, CPU, etc.*/ |
| #define CONFIG_ARM1176 |
| #define CONFIG_BCM2835 |
| #define CONFIG_ARCH_CPU_INIT |
| #define CONFIG_SYS_DCACHE_OFF |
| /* |
| * 2835 is a SKU in a series for which the 2708 is the first or primary SoC, |
| * so 2708 has historically been used rather than a dedicated 2835 ID. |
| */ |
| #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708 |
| |
| /* Memory layout */ |
| #define CONFIG_NR_DRAM_BANKS 1 |
| #define CONFIG_SYS_SDRAM_BASE 0x00000000 |
| #define CONFIG_SYS_TEXT_BASE 0x00008000 |
| #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE |
| /* |
| * The board really has 256M. However, the VC (VideoCore co-processor) shares |
| * the RAM, and uses a configurable portion at the top. We tell U-Boot that a |
| * smaller amount of RAM is present in order to avoid stomping on the area |
| * the VC uses. |
| */ |
| #define CONFIG_SYS_SDRAM_SIZE SZ_128M |
| #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \ |
| CONFIG_SYS_SDRAM_SIZE - \ |
| GENERATED_GBL_DATA_SIZE) |
| #define CONFIG_SYS_MALLOC_LEN SZ_4M |
| #define CONFIG_SYS_MEMTEST_START 0x00100000 |
| #define CONFIG_SYS_MEMTEST_END 0x00200000 |
| #define CONFIG_LOADADDR 0x00200000 |
| |
| /* Flash */ |
| #define CONFIG_SYS_NO_FLASH |
| |
| /* Devices */ |
| /* GPIO */ |
| #define CONFIG_BCM2835_GPIO |
| /* LCD */ |
| #define CONFIG_LCD |
| #define CONFIG_LCD_DT_SIMPLEFB |
| #define LCD_BPP LCD_COLOR16 |
| /* |
| * Prevent allocation of RAM for FB; the real FB address is queried |
| * dynamically from the VideoCore co-processor, and comes from RAM |
| * not owned by the ARM CPU. |
| */ |
| #define CONFIG_FB_ADDR 0 |
| #define CONFIG_VIDEO_BCM2835 |
| #define CONFIG_SYS_WHITE_ON_BLACK |
| |
| /* SD/MMC configuration */ |
| #define CONFIG_GENERIC_MMC |
| #define CONFIG_MMC |
| #define CONFIG_SDHCI |
| #define CONFIG_MMC_SDHCI_IO_ACCESSORS |
| #define CONFIG_BCM2835_SDHCI |
| |
| /* Console UART */ |
| #define CONFIG_PL011_SERIAL |
| #define CONFIG_PL011_CLOCK 3000000 |
| #define CONFIG_PL01x_PORTS { (void *)0x20201000 } |
| #define CONFIG_CONS_INDEX 0 |
| #define CONFIG_BAUDRATE 115200 |
| |
| /* Console configuration */ |
| #define CONFIG_SYS_CBSIZE 1024 |
| #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \ |
| sizeof(CONFIG_SYS_PROMPT) + 16) |
| |
| /* Environment */ |
| #define CONFIG_ENV_SIZE SZ_16K |
| #define CONFIG_ENV_IS_NOWHERE |
| #define CONFIG_ENV_VARS_UBOOT_CONFIG |
| #define CONFIG_SYS_LOAD_ADDR 0x1000000 |
| #define CONFIG_CONSOLE_MUX |
| #define CONFIG_SYS_CONSOLE_IS_IN_ENV |
| #define CONFIG_PREBOOT \ |
| "if load mmc 0:1 ${loadaddr} /uEnv.txt; then " \ |
| "env import -t ${loadaddr} ${filesize}; " \ |
| "fi" |
| |
| #define ENV_DEVICE_SETTINGS \ |
| "stdin=serial,lcd\0" \ |
| "stdout=serial,lcd\0" \ |
| "stderr=serial,lcd\0" |
| |
| /* |
| * Memory layout for where various images get loaded by boot scripts: |
| * |
| * scriptaddr can be pretty much anywhere that doesn't conflict with something |
| * else. Put it low in memory to avoid conflicts. |
| * |
| * pxefile_addr_r can be pretty much anywhere that doesn't conflict with |
| * something else. Put it low in memory to avoid conflicts. |
| * |
| * kernel_addr_r must be within the first 128M of RAM in order for the |
| * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will |
| * decompress itself to 0x8000 after the start of RAM, kernel_addr_r |
| * should not overlap that area, or the kernel will have to copy itself |
| * somewhere else before decompression. Similarly, the address of any other |
| * data passed to the kernel shouldn't overlap the start of RAM. Pushing |
| * this up to 16M allows for a sizable kernel to be decompressed below the |
| * compressed load address. |
| * |
| * fdt_addr_r simply shouldn't overlap anything else. Choosing 32M allows for |
| * the compressed kernel to be up to 16M too. |
| * |
| * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows |
| * for the FDT/DTB to be up to 1M, which is hopefully plenty. |
| */ |
| #define ENV_MEM_LAYOUT_SETTINGS \ |
| "scriptaddr=0x00000000\0" \ |
| "pxefile_addr_r=0x00100000\0" \ |
| "kernel_addr_r=0x01000000\0" \ |
| "fdt_addr_r=0x02000000\0" \ |
| "fdtfile=bcm2835-rpi-b.dtb\0" \ |
| "ramdisk_addr_r=0x02100000\0" \ |
| |
| #define BOOTCMDS_MMC \ |
| "mmc_boot=" \ |
| "setenv devtype mmc; " \ |
| "if mmc dev ${devnum}; then " \ |
| "run scan_boot; " \ |
| "fi\0" \ |
| "bootcmd_mmc0=setenv devnum 0; run mmc_boot;\0" |
| #define BOOT_TARGETS_MMC "mmc0" |
| |
| #define BOOTCMDS_COMMON \ |
| "rootpart=1\0" \ |
| \ |
| "do_script_boot=" \ |
| "load ${devtype} ${devnum}:${rootpart} " \ |
| "${scriptaddr} ${prefix}${script}; " \ |
| "source ${scriptaddr}\0" \ |
| \ |
| "script_boot=" \ |
| "for script in ${boot_scripts}; do " \ |
| "if test -e ${devtype} ${devnum}:${rootpart} " \ |
| "${prefix}${script}; then " \ |
| "echo Found ${prefix}${script}; " \ |
| "run do_script_boot; " \ |
| "echo SCRIPT FAILED: continuing...; " \ |
| "fi; " \ |
| "done\0" \ |
| \ |
| "do_sysboot_boot=" \ |
| "sysboot ${devtype} ${devnum}:${rootpart} any " \ |
| "${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \ |
| \ |
| "sysboot_boot=" \ |
| "if test -e ${devtype} ${devnum}:${rootpart} " \ |
| "${prefix}extlinux/extlinux.conf; then " \ |
| "echo Found ${prefix}extlinux/extlinux.conf; " \ |
| "run do_sysboot_boot; " \ |
| "echo SCRIPT FAILED: continuing...; " \ |
| "fi\0" \ |
| \ |
| "scan_boot=" \ |
| "echo Scanning ${devtype} ${devnum}...; " \ |
| "for prefix in ${boot_prefixes}; do " \ |
| "run sysboot_boot; " \ |
| "run script_boot; " \ |
| "done\0" \ |
| \ |
| "boot_targets=" \ |
| BOOT_TARGETS_MMC " " \ |
| "\0" \ |
| \ |
| "boot_prefixes=/\0" \ |
| \ |
| "boot_scripts=boot.scr.uimg\0" \ |
| \ |
| BOOTCMDS_MMC |
| |
| #define CONFIG_BOOTCOMMAND \ |
| "for target in ${boot_targets}; do run bootcmd_${target}; done" |
| |
| #define CONFIG_BOOTCOMMAND \ |
| "for target in ${boot_targets}; do run bootcmd_${target}; done" |
| |
| #define CONFIG_EXTRA_ENV_SETTINGS \ |
| ENV_DEVICE_SETTINGS \ |
| ENV_MEM_LAYOUT_SETTINGS \ |
| BOOTCMDS_COMMON |
| |
| #define CONFIG_BOOTDELAY 2 |
| |
| /* Shell */ |
| #define CONFIG_SYS_MAXARGS 8 |
| #define CONFIG_SYS_PROMPT "U-Boot> " |
| #define CONFIG_COMMAND_HISTORY |
| |
| /* Commands */ |
| #include <config_cmd_default.h> |
| #define CONFIG_CMD_GPIO |
| #define CONFIG_CMD_MMC |
| #define CONFIG_PARTITION_UUIDS |
| #define CONFIG_CMD_PART |
| |
| /* Device tree support */ |
| #define CONFIG_OF_BOARD_SETUP |
| /* ATAGs support for bootm/bootz */ |
| #define CONFIG_SETUP_MEMORY_TAGS |
| #define CONFIG_CMDLINE_TAG |
| #define CONFIG_INITRD_TAG |
| |
| #include <config_distro_defaults.h> |
| |
| /* Some things don't make sense on this HW or yet */ |
| #undef CONFIG_CMD_FPGA |
| #undef CONFIG_CMD_NET |
| #undef CONFIG_CMD_NFS |
| #undef CONFIG_CMD_SAVEENV |
| #undef CONFIG_CMD_DHCP |
| #undef CONFIG_CMD_MII |
| #undef CONFIG_CMD_NET |
| #undef CONFIG_CMD_PING |
| |
| #endif |
