2 * (C) Copyright 2012 Stephen Warren
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
20 #include <linux/sizes.h>
22 /* Architecture, CPU, etc.*/
23 #define CONFIG_SYS_GENERIC_BOARD
24 #define CONFIG_ARM1176
25 #define CONFIG_BCM2835
26 #define CONFIG_ARCH_CPU_INIT
27 #define CONFIG_SYS_DCACHE_OFF
29 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
30 * so 2708 has historically been used rather than a dedicated 2835 ID.
32 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
35 #define CONFIG_NR_DRAM_BANKS 1
36 #define CONFIG_SYS_SDRAM_BASE 0x00000000
37 #define CONFIG_SYS_TEXT_BASE 0x00008000
38 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
40 * The board really has 256M. However, the VC (VideoCore co-processor) shares
41 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
42 * smaller amount of RAM is present in order to avoid stomping on the area
45 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
46 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
47 CONFIG_SYS_SDRAM_SIZE - \
48 GENERATED_GBL_DATA_SIZE)
49 #define CONFIG_SYS_MALLOC_LEN SZ_4M
50 #define CONFIG_SYS_MEMTEST_START 0x00100000
51 #define CONFIG_SYS_MEMTEST_END 0x00200000
52 #define CONFIG_LOADADDR 0x00200000
55 #define CONFIG_SYS_NO_FLASH
59 #define CONFIG_BCM2835_GPIO
62 #define CONFIG_LCD_DT_SIMPLEFB
63 #define LCD_BPP LCD_COLOR16
65 * Prevent allocation of RAM for FB; the real FB address is queried
66 * dynamically from the VideoCore co-processor, and comes from RAM
67 * not owned by the ARM CPU.
69 #define CONFIG_FB_ADDR 0
70 #define CONFIG_VIDEO_BCM2835
71 #define CONFIG_SYS_WHITE_ON_BLACK
73 /* SD/MMC configuration */
74 #define CONFIG_GENERIC_MMC
77 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
78 #define CONFIG_BCM2835_SDHCI
81 #define CONFIG_PL011_SERIAL
82 #define CONFIG_PL011_CLOCK 3000000
83 #define CONFIG_PL01x_PORTS { (void *)0x20201000 }
84 #define CONFIG_CONS_INDEX 0
85 #define CONFIG_BAUDRATE 115200
87 /* Console configuration */
88 #define CONFIG_SYS_CBSIZE 1024
89 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
90 sizeof(CONFIG_SYS_PROMPT) + 16)
93 #define CONFIG_ENV_SIZE SZ_16K
94 #define CONFIG_ENV_IS_NOWHERE
95 #define CONFIG_ENV_VARS_UBOOT_CONFIG
96 #define CONFIG_SYS_LOAD_ADDR 0x1000000
97 #define CONFIG_CONSOLE_MUX
98 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
99 #define CONFIG_PREBOOT \
100 "if load mmc 0:1 ${loadaddr} /uEnv.txt; then " \
101 "env import -t -r ${loadaddr} ${filesize}; " \
105 #define CONFIG_SYS_MAXARGS 8
106 #define CONFIG_SYS_PROMPT "U-Boot> "
107 #define CONFIG_COMMAND_HISTORY
110 #include <config_cmd_default.h>
111 #define CONFIG_CMD_GPIO
112 #define CONFIG_CMD_MMC
113 #define CONFIG_PARTITION_UUIDS
114 #define CONFIG_CMD_PART
116 /* Device tree support */
117 #define CONFIG_OF_BOARD_SETUP
118 /* ATAGs support for bootm/bootz */
119 #define CONFIG_SETUP_MEMORY_TAGS
120 #define CONFIG_CMDLINE_TAG
121 #define CONFIG_INITRD_TAG
123 #include <config_distro_defaults.h>
125 /* Some things don't make sense on this HW or yet */
126 #undef CONFIG_CMD_FPGA
127 #undef CONFIG_CMD_NET
128 #undef CONFIG_CMD_NFS
129 #undef CONFIG_CMD_SAVEENV
130 #undef CONFIG_CMD_DHCP
131 #undef CONFIG_CMD_MII
132 #undef CONFIG_CMD_NET
133 #undef CONFIG_CMD_PING
136 #define ENV_DEVICE_SETTINGS \
137 "stdin=serial,lcd\0" \
138 "stdout=serial,lcd\0" \
139 "stderr=serial,lcd\0"
142 * Memory layout for where various images get loaded by boot scripts:
144 * scriptaddr can be pretty much anywhere that doesn't conflict with something
145 * else. Put it low in memory to avoid conflicts.
147 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
148 * something else. Put it low in memory to avoid conflicts.
150 * kernel_addr_r must be within the first 128M of RAM in order for the
151 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
152 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
153 * should not overlap that area, or the kernel will have to copy itself
154 * somewhere else before decompression. Similarly, the address of any other
155 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
156 * this up to 16M allows for a sizable kernel to be decompressed below the
157 * compressed load address.
159 * fdt_addr_r simply shouldn't overlap anything else. Choosing 32M allows for
160 * the compressed kernel to be up to 16M too.
162 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
163 * for the FDT/DTB to be up to 1M, which is hopefully plenty.
165 #define ENV_MEM_LAYOUT_SETTINGS \
166 "scriptaddr=0x00000000\0" \
167 "pxefile_addr_r=0x00100000\0" \
168 "kernel_addr_r=0x01000000\0" \
169 "fdt_addr_r=0x02000000\0" \
170 "fdtfile=bcm2835-rpi-b.dtb\0" \
171 "ramdisk_addr_r=0x02100000\0" \
173 #define BOOT_TARGET_DEVICES(func) \
175 #include <config_distro_bootcmd.h>
177 #define CONFIG_EXTRA_ENV_SETTINGS \
178 ENV_DEVICE_SETTINGS \
179 ENV_MEM_LAYOUT_SETTINGS \
182 #define CONFIG_BOOTDELAY 2