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
34 /* Enable driver model */
37 #define CONFIG_DM_GPIO
40 #define CONFIG_NR_DRAM_BANKS 1
41 #define CONFIG_SYS_SDRAM_BASE 0x00000000
42 #define CONFIG_SYS_TEXT_BASE 0x00008000
43 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
45 * The board really has 256M. However, the VC (VideoCore co-processor) shares
46 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
47 * smaller amount of RAM is present in order to avoid stomping on the area
50 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
51 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
52 CONFIG_SYS_SDRAM_SIZE - \
53 GENERATED_GBL_DATA_SIZE)
54 #define CONFIG_SYS_MALLOC_LEN SZ_4M
55 #define CONFIG_SYS_MEMTEST_START 0x00100000
56 #define CONFIG_SYS_MEMTEST_END 0x00200000
57 #define CONFIG_LOADADDR 0x00200000
60 #define CONFIG_SYS_NO_FLASH
64 #define CONFIG_BCM2835_GPIO
67 #define CONFIG_LCD_DT_SIMPLEFB
68 #define LCD_BPP LCD_COLOR16
70 * Prevent allocation of RAM for FB; the real FB address is queried
71 * dynamically from the VideoCore co-processor, and comes from RAM
72 * not owned by the ARM CPU.
74 #define CONFIG_FB_ADDR 0
75 #define CONFIG_VIDEO_BCM2835
76 #define CONFIG_SYS_WHITE_ON_BLACK
78 /* SD/MMC configuration */
79 #define CONFIG_GENERIC_MMC
82 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
83 #define CONFIG_BCM2835_SDHCI
86 #define CONFIG_PL011_SERIAL
87 #define CONFIG_PL011_CLOCK 3000000
88 #define CONFIG_PL01x_PORTS { (void *)0x20201000 }
89 #define CONFIG_CONS_INDEX 0
90 #define CONFIG_BAUDRATE 115200
92 /* Console configuration */
93 #define CONFIG_SYS_CBSIZE 1024
94 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
95 sizeof(CONFIG_SYS_PROMPT) + 16)
98 #define CONFIG_ENV_SIZE SZ_16K
99 #define CONFIG_ENV_IS_NOWHERE
100 #define CONFIG_ENV_VARS_UBOOT_CONFIG
101 #define CONFIG_SYS_LOAD_ADDR 0x1000000
102 #define CONFIG_CONSOLE_MUX
103 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
104 #define CONFIG_PREBOOT \
105 "if load mmc 0:1 ${loadaddr} /uEnv.txt; then " \
106 "env import -t -r ${loadaddr} ${filesize}; " \
110 #define CONFIG_SYS_MAXARGS 8
111 #define CONFIG_SYS_PROMPT "U-Boot> "
112 #define CONFIG_COMMAND_HISTORY
115 #include <config_cmd_default.h>
116 #define CONFIG_CMD_GPIO
117 #define CONFIG_CMD_MMC
118 #define CONFIG_PARTITION_UUIDS
119 #define CONFIG_CMD_PART
121 /* Device tree support */
122 #define CONFIG_OF_BOARD_SETUP
123 /* ATAGs support for bootm/bootz */
124 #define CONFIG_SETUP_MEMORY_TAGS
125 #define CONFIG_CMDLINE_TAG
126 #define CONFIG_INITRD_TAG
128 #include <config_distro_defaults.h>
130 /* Some things don't make sense on this HW or yet */
131 #undef CONFIG_CMD_FPGA
132 #undef CONFIG_CMD_NET
133 #undef CONFIG_CMD_NFS
134 #undef CONFIG_CMD_SAVEENV
135 #undef CONFIG_CMD_DHCP
136 #undef CONFIG_CMD_MII
137 #undef CONFIG_CMD_NET
138 #undef CONFIG_CMD_PING
141 #define ENV_DEVICE_SETTINGS \
142 "stdin=serial,lcd\0" \
143 "stdout=serial,lcd\0" \
144 "stderr=serial,lcd\0"
147 * Memory layout for where various images get loaded by boot scripts:
149 * scriptaddr can be pretty much anywhere that doesn't conflict with something
150 * else. Put it low in memory to avoid conflicts.
152 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
153 * something else. Put it low in memory to avoid conflicts.
155 * kernel_addr_r must be within the first 128M of RAM in order for the
156 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
157 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
158 * should not overlap that area, or the kernel will have to copy itself
159 * somewhere else before decompression. Similarly, the address of any other
160 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
161 * this up to 16M allows for a sizable kernel to be decompressed below the
162 * compressed load address.
164 * fdt_addr_r simply shouldn't overlap anything else. Choosing 32M allows for
165 * the compressed kernel to be up to 16M too.
167 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
168 * for the FDT/DTB to be up to 1M, which is hopefully plenty.
170 #define ENV_MEM_LAYOUT_SETTINGS \
171 "scriptaddr=0x00000000\0" \
172 "pxefile_addr_r=0x00100000\0" \
173 "kernel_addr_r=0x01000000\0" \
174 "fdt_addr_r=0x02000000\0" \
175 "fdtfile=bcm2835-rpi-b.dtb\0" \
176 "ramdisk_addr_r=0x02100000\0" \
178 #define BOOT_TARGET_DEVICES(func) \
180 #include <config_distro_bootcmd.h>
182 #define CONFIG_EXTRA_ENV_SETTINGS \
183 ENV_DEVICE_SETTINGS \
184 ENV_MEM_LAYOUT_SETTINGS \
187 #define CONFIG_BOOTDELAY 2