2 * (C) Copyright 2012,2015 Stephen Warren
4 * SPDX-License-Identifier: GPL-2.0
10 #include <linux/sizes.h>
11 #include <asm/arch/timer.h>
13 /* Architecture, CPU, etc.*/
14 #define CONFIG_ARCH_CPU_INIT
16 #define CONFIG_SYS_TIMER_RATE 1000000
17 #define CONFIG_SYS_TIMER_COUNTER \
18 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
21 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
22 * so 2708 has historically been used rather than a dedicated 2835 ID.
24 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
25 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
26 * rather than obtaining a valid ID:-/
29 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
33 #define CONFIG_NR_DRAM_BANKS 1
34 #define CONFIG_SYS_SDRAM_BASE 0x00000000
35 #define CONFIG_SYS_TEXT_BASE 0x00008000
36 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
38 * The board really has 256M. However, the VC (VideoCore co-processor) shares
39 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
40 * smaller amount of RAM is present in order to avoid stomping on the area
43 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
44 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
45 CONFIG_SYS_SDRAM_SIZE - \
46 GENERATED_GBL_DATA_SIZE)
47 #define CONFIG_SYS_MALLOC_LEN SZ_4M
48 #define CONFIG_SYS_MEMTEST_START 0x00100000
49 #define CONFIG_SYS_MEMTEST_END 0x00200000
50 #define CONFIG_LOADADDR 0x00200000
53 #define CONFIG_SYS_NO_FLASH
57 #define CONFIG_BCM2835_GPIO
60 #define CONFIG_LCD_DT_SIMPLEFB
61 #define LCD_BPP LCD_COLOR16
63 * Prevent allocation of RAM for FB; the real FB address is queried
64 * dynamically from the VideoCore co-processor, and comes from RAM
65 * not owned by the ARM CPU.
67 #define CONFIG_FB_ADDR 0
68 #define CONFIG_VIDEO_BCM2835
69 #define CONFIG_SYS_WHITE_ON_BLACK
70 #define CONFIG_CONSOLE_SCROLL_LINES 10
72 /* SD/MMC configuration */
73 #define CONFIG_GENERIC_MMC
76 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
77 #define CONFIG_BCM2835_SDHCI
79 #define CONFIG_CMD_USB
81 #define CONFIG_USB_DWC2
82 #ifndef CONFIG_BCM2835
83 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
85 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
87 #define CONFIG_USB_STORAGE
88 #define CONFIG_USB_HOST_ETHER
89 #define CONFIG_USB_ETHER_SMSC95XX
90 #define CONFIG_MISC_INIT_R
91 #define CONFIG_USB_KEYBOARD
92 #define CONFIG_SYS_USB_EVENT_POLL
93 #define CONFIG_SYS_STDIO_DEREGISTER
97 #define CONFIG_PL01X_SERIAL
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_IN_FAT
109 #define FAT_ENV_INTERFACE "mmc"
110 #define FAT_ENV_DEVICE_AND_PART "0:1"
111 #define FAT_ENV_FILE "uboot.env"
112 #define CONFIG_FAT_WRITE
113 #define CONFIG_ENV_VARS_UBOOT_CONFIG
114 #define CONFIG_SYS_LOAD_ADDR 0x1000000
115 #define CONFIG_CONSOLE_MUX
116 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
117 #define CONFIG_PREBOOT "usb start"
120 #define CONFIG_SYS_MAXARGS 16
121 #define CONFIG_COMMAND_HISTORY
124 #define CONFIG_CMD_MMC
125 #define CONFIG_PARTITION_UUIDS
126 #define CONFIG_CMD_PART
128 /* ATAGs support for bootm/bootz */
129 #define CONFIG_SETUP_MEMORY_TAGS
130 #define CONFIG_CMDLINE_TAG
131 #define CONFIG_INITRD_TAG
133 #include <config_distro_defaults.h>
136 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
137 #define ENV_DEVICE_SETTINGS \
138 "stdin=serial,usbkbd\0" \
139 "stdout=serial,lcd\0" \
140 "stderr=serial,lcd\0"
143 * Memory layout for where various images get loaded by boot scripts:
145 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
147 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
148 * binary firmware loads a DT to address 0x100, so we choose this address to
149 * match it. This allows custom boot scripts to pass this DT on to Linux
150 * simply by not over-writing the data at this address. When using U-Boot,
151 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
152 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
154 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
155 * something else. Put it low in memory to avoid conflicts.
157 * kernel_addr_r must be within the first 128M of RAM in order for the
158 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
159 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
160 * should not overlap that area, or the kernel will have to copy itself
161 * somewhere else before decompression. Similarly, the address of any other
162 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
163 * this up to 16M allows for a sizable kernel to be decompressed below the
164 * compressed load address.
166 * scriptaddr can be pretty much anywhere that doesn't conflict with something
167 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
169 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
170 * for any boot script to be up to 1M, which is hopefully plenty.
172 #define ENV_MEM_LAYOUT_SETTINGS \
173 "fdt_high=ffffffff\0" \
174 "initrd_high=ffffffff\0" \
175 "fdt_addr_r=0x00000100\0" \
176 "pxefile_addr_r=0x00100000\0" \
177 "kernel_addr_r=0x01000000\0" \
178 "scriptaddr=0x02000000\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