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/*
* (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
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