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_BCM2835
25 #define CONFIG_ARCH_CPU_INIT
26 #define CONFIG_SYS_DCACHE_OFF
28 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
29 * so 2708 has historically been used rather than a dedicated 2835 ID.
31 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
33 /* Enable driver model */
36 #define CONFIG_DM_GPIO
39 #define CONFIG_NR_DRAM_BANKS 1
40 #define CONFIG_SYS_SDRAM_BASE 0x00000000
41 #define CONFIG_SYS_TEXT_BASE 0x00008000
42 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
44 * The board really has 256M. However, the VC (VideoCore co-processor) shares
45 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
46 * smaller amount of RAM is present in order to avoid stomping on the area
49 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
50 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
51 CONFIG_SYS_SDRAM_SIZE - \
52 GENERATED_GBL_DATA_SIZE)
53 #define CONFIG_SYS_MALLOC_LEN SZ_4M
54 #define CONFIG_SYS_MEMTEST_START 0x00100000
55 #define CONFIG_SYS_MEMTEST_END 0x00200000
56 #define CONFIG_LOADADDR 0x00200000
59 #define CONFIG_SYS_NO_FLASH
63 #define CONFIG_BCM2835_GPIO
66 #define CONFIG_LCD_DT_SIMPLEFB
67 #define LCD_BPP LCD_COLOR16
69 * Prevent allocation of RAM for FB; the real FB address is queried
70 * dynamically from the VideoCore co-processor, and comes from RAM
71 * not owned by the ARM CPU.
73 #define CONFIG_FB_ADDR 0
74 #define CONFIG_VIDEO_BCM2835
75 #define CONFIG_SYS_WHITE_ON_BLACK
77 /* SD/MMC configuration */
78 #define CONFIG_GENERIC_MMC
81 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
82 #define CONFIG_BCM2835_SDHCI
84 #define CONFIG_CMD_USB
86 #define CONFIG_USB_DWC2
87 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
88 #define CONFIG_USB_STORAGE
89 #define CONFIG_USB_HOST_ETHER
90 #define CONFIG_USB_ETHER_SMSC95XX
91 #define CONFIG_MISC_INIT_R
95 #define CONFIG_PL011_SERIAL
96 #define CONFIG_PL011_CLOCK 3000000
97 #define CONFIG_PL01x_PORTS { (void *)0x20201000 }
98 #define CONFIG_CONS_INDEX 0
99 #define CONFIG_BAUDRATE 115200
101 /* Console configuration */
102 #define CONFIG_SYS_CBSIZE 1024
103 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
104 sizeof(CONFIG_SYS_PROMPT) + 16)
107 #define CONFIG_ENV_SIZE SZ_16K
108 #define CONFIG_ENV_IS_NOWHERE
109 #define CONFIG_ENV_VARS_UBOOT_CONFIG
110 #define CONFIG_SYS_LOAD_ADDR 0x1000000
111 #define CONFIG_CONSOLE_MUX
112 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
113 #define CONFIG_PREBOOT \
114 "if load mmc 0:1 ${loadaddr} /uEnv.txt; then " \
115 "env import -t -r ${loadaddr} ${filesize}; " \
119 #define CONFIG_SYS_MAXARGS 8
120 #define CONFIG_SYS_PROMPT "U-Boot> "
121 #define CONFIG_COMMAND_HISTORY
124 #include <config_cmd_default.h>
125 #define CONFIG_CMD_GPIO
126 #define CONFIG_CMD_MMC
127 #define CONFIG_PARTITION_UUIDS
128 #define CONFIG_CMD_PART
130 /* Device tree support */
131 #define CONFIG_OF_BOARD_SETUP
132 /* ATAGs support for bootm/bootz */
133 #define CONFIG_SETUP_MEMORY_TAGS
134 #define CONFIG_CMDLINE_TAG
135 #define CONFIG_INITRD_TAG
137 #include <config_distro_defaults.h>
139 /* Some things don't make sense on this HW or yet */
140 #undef CONFIG_CMD_FPGA
141 #undef CONFIG_CMD_SAVEENV
144 #define ENV_DEVICE_SETTINGS \
145 "stdin=serial,lcd\0" \
146 "stdout=serial,lcd\0" \
147 "stderr=serial,lcd\0"
150 * Memory layout for where various images get loaded by boot scripts:
152 * scriptaddr can be pretty much anywhere that doesn't conflict with something
153 * else. Put it low in memory to avoid conflicts.
155 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
156 * something else. Put it low in memory to avoid conflicts.
158 * kernel_addr_r must be within the first 128M of RAM in order for the
159 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
160 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
161 * should not overlap that area, or the kernel will have to copy itself
162 * somewhere else before decompression. Similarly, the address of any other
163 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
164 * this up to 16M allows for a sizable kernel to be decompressed below the
165 * compressed load address.
167 * fdt_addr_r simply shouldn't overlap anything else. Choosing 32M allows for
168 * the compressed kernel to be up to 16M too.
170 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
171 * for the FDT/DTB to be up to 1M, which is hopefully plenty.
173 #define ENV_MEM_LAYOUT_SETTINGS \
174 "scriptaddr=0x00000000\0" \
175 "pxefile_addr_r=0x00100000\0" \
176 "kernel_addr_r=0x01000000\0" \
177 "fdt_addr_r=0x02000000\0" \
178 "fdtfile=bcm2835-rpi-b.dtb\0" \
179 "ramdisk_addr_r=0x02100000\0" \
181 #define BOOT_TARGET_DEVICES(func) \
186 #include <config_distro_bootcmd.h>
188 #define CONFIG_EXTRA_ENV_SETTINGS \
189 ENV_DEVICE_SETTINGS \
190 ENV_MEM_LAYOUT_SETTINGS \
193 #define CONFIG_BOOTDELAY 2