2 * (C) Copyright 2012-2016 Stephen Warren
4 * SPDX-License-Identifier: GPL-2.0
10 #include <linux/sizes.h>
11 #include <asm/arch/timer.h>
13 #if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B)
14 #define CONFIG_SKIP_LOWLEVEL_INIT
17 /* Architecture, CPU, etc.*/
18 #define CONFIG_ARCH_CPU_INIT
19 #define CONFIG_BOARD_EARLY_INIT_F
21 /* Use SoC timer for AArch32, but architected timer for AArch64 */
23 #define CONFIG_SYS_TIMER_RATE 1000000
24 #define CONFIG_SYS_TIMER_COUNTER \
25 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
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 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
33 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
34 * rather than obtaining a valid ID:-/
36 * For the bcm2837, hopefully a machine type is not needed, since everything
40 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
44 #define CONFIG_NR_DRAM_BANKS 1
45 #define CONFIG_SYS_SDRAM_BASE 0x00000000
47 #define CONFIG_SYS_TEXT_BASE 0x00080000
49 #define CONFIG_SYS_TEXT_BASE 0x00008000
51 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
53 * The board really has 256M. However, the VC (VideoCore co-processor) shares
54 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
55 * smaller amount of RAM is present in order to avoid stomping on the area
58 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
59 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
60 CONFIG_SYS_SDRAM_SIZE - \
61 GENERATED_GBL_DATA_SIZE)
62 #define CONFIG_SYS_MALLOC_LEN SZ_4M
63 #define CONFIG_SYS_MEMTEST_START 0x00100000
64 #define CONFIG_SYS_MEMTEST_END 0x00200000
65 #define CONFIG_LOADADDR 0x00200000
68 #define CONFIG_SYS_NO_FLASH
72 #define CONFIG_BCM2835_GPIO
74 #define CONFIG_LCD_DT_SIMPLEFB
75 #define LCD_BPP LCD_COLOR16
77 * Prevent allocation of RAM for FB; the real FB address is queried
78 * dynamically from the VideoCore co-processor, and comes from RAM
79 * not owned by the ARM CPU.
81 #define CONFIG_FB_ADDR 0
82 #define CONFIG_VIDEO_BCM2835
83 #define CONFIG_SYS_WHITE_ON_BLACK
85 /* SD/MMC configuration */
86 #define CONFIG_GENERIC_MMC
89 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
90 #define CONFIG_BCM2835_SDHCI
93 #define CONFIG_USB_DWC2
94 #ifndef CONFIG_BCM2835
95 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
97 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
99 #define CONFIG_USB_HOST_ETHER
100 #define CONFIG_USB_ETHER_SMSC95XX
101 #define CONFIG_TFTP_TSIZE
102 #define CONFIG_MISC_INIT_R
103 #define CONFIG_USB_KEYBOARD
104 #define CONFIG_SYS_USB_EVENT_POLL
105 #define CONFIG_SYS_STDIO_DEREGISTER
109 #ifdef CONFIG_BCM2837
110 #define CONFIG_BCM283X_MU_SERIAL
112 #define CONFIG_PL01X_SERIAL
114 #define CONFIG_CONS_INDEX 0
115 #define CONFIG_BAUDRATE 115200
117 /* Console configuration */
118 #define CONFIG_SYS_CBSIZE 1024
119 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
120 sizeof(CONFIG_SYS_PROMPT) + 16)
123 #define CONFIG_ENV_SIZE SZ_16K
124 #define CONFIG_ENV_IS_IN_FAT
125 #define FAT_ENV_INTERFACE "mmc"
126 #define FAT_ENV_DEVICE_AND_PART "0:1"
127 #define FAT_ENV_FILE "uboot.env"
128 #define CONFIG_FAT_WRITE
129 #define CONFIG_ENV_VARS_UBOOT_CONFIG
130 #define CONFIG_SYS_LOAD_ADDR 0x1000000
131 #define CONFIG_PREBOOT "usb start"
134 #define CONFIG_SYS_MAXARGS 16
135 #define CONFIG_COMMAND_HISTORY
138 #define CONFIG_PARTITION_UUIDS
139 #define CONFIG_CMD_PART
141 /* ATAGs support for bootm/bootz */
142 #define CONFIG_SETUP_MEMORY_TAGS
143 #define CONFIG_CMDLINE_TAG
144 #define CONFIG_INITRD_TAG
146 #include <config_distro_defaults.h>
149 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
150 #define ENV_DEVICE_SETTINGS \
151 "stdin=serial,usbkbd\0" \
152 "stdout=serial,lcd\0" \
153 "stderr=serial,lcd\0"
156 * Memory layout for where various images get loaded by boot scripts:
158 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
160 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
161 * binary firmware loads a DT to address 0x100, so we choose this address to
162 * match it. This allows custom boot scripts to pass this DT on to Linux
163 * simply by not over-writing the data at this address. When using U-Boot,
164 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
165 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
167 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
168 * something else. Put it low in memory to avoid conflicts.
170 * kernel_addr_r must be within the first 128M of RAM in order for the
171 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
172 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
173 * should not overlap that area, or the kernel will have to copy itself
174 * somewhere else before decompression. Similarly, the address of any other
175 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
176 * this up to 16M allows for a sizable kernel to be decompressed below the
177 * compressed load address.
179 * scriptaddr can be pretty much anywhere that doesn't conflict with something
180 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
182 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
183 * for any boot script to be up to 1M, which is hopefully plenty.
185 #define ENV_MEM_LAYOUT_SETTINGS \
186 "fdt_high=ffffffff\0" \
187 "initrd_high=ffffffff\0" \
188 "fdt_addr_r=0x00000100\0" \
189 "pxefile_addr_r=0x00100000\0" \
190 "kernel_addr_r=0x01000000\0" \
191 "scriptaddr=0x02000000\0" \
192 "ramdisk_addr_r=0x02100000\0" \
194 #define BOOT_TARGET_DEVICES(func) \
199 #include <config_distro_bootcmd.h>
201 #define CONFIG_EXTRA_ENV_SETTINGS \
202 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
203 ENV_DEVICE_SETTINGS \
204 ENV_MEM_LAYOUT_SETTINGS \