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
20 /* Use SoC timer for AArch32, but architected timer for AArch64 */
22 #define CONFIG_SYS_TIMER_RATE 1000000
23 #define CONFIG_SYS_TIMER_COUNTER \
24 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
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 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
32 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
33 * rather than obtaining a valid ID:-/
35 * For the bcm2837, hopefully a machine type is not needed, since everything
39 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
43 #define CONFIG_NR_DRAM_BANKS 1
44 #define CONFIG_SYS_SDRAM_BASE 0x00000000
46 #define CONFIG_SYS_TEXT_BASE 0x00080000
48 #define CONFIG_SYS_TEXT_BASE 0x00008000
50 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
52 * The board really has 256M. However, the VC (VideoCore co-processor) shares
53 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
54 * smaller amount of RAM is present in order to avoid stomping on the area
57 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
58 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
59 CONFIG_SYS_SDRAM_SIZE - \
60 GENERATED_GBL_DATA_SIZE)
61 #define CONFIG_SYS_MALLOC_LEN SZ_4M
62 #define CONFIG_SYS_MEMTEST_START 0x00100000
63 #define CONFIG_SYS_MEMTEST_END 0x00200000
64 #define CONFIG_LOADADDR 0x00200000
67 #define CONFIG_SYS_NO_FLASH
71 #define CONFIG_BCM2835_GPIO
73 #define CONFIG_LCD_DT_SIMPLEFB
74 #define LCD_BPP LCD_COLOR32
76 * Prevent allocation of RAM for FB; the real FB address is queried
77 * dynamically from the VideoCore co-processor, and comes from RAM
78 * not owned by the ARM CPU.
80 #define CONFIG_FB_ADDR 0
81 #define CONFIG_VIDEO_BCM2835
82 #define CONFIG_SYS_WHITE_ON_BLACK
84 /* SD/MMC configuration */
85 #define CONFIG_GENERIC_MMC
88 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
89 #define CONFIG_BCM2835_SDHCI
92 #define CONFIG_USB_DWC2
93 #ifndef CONFIG_BCM2835
94 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
96 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
98 #define CONFIG_USB_HOST_ETHER
99 #define CONFIG_USB_ETHER_SMSC95XX
100 #define CONFIG_TFTP_TSIZE
101 #define CONFIG_MISC_INIT_R
102 #define CONFIG_SYS_USB_EVENT_POLL
106 #ifdef CONFIG_BCM2837
107 #define CONFIG_BCM283X_MU_SERIAL
109 #define CONFIG_PL01X_SERIAL
111 #define CONFIG_CONS_INDEX 0
112 #define CONFIG_BAUDRATE 115200
114 /* Console configuration */
115 #define CONFIG_SYS_CBSIZE 1024
116 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
117 sizeof(CONFIG_SYS_PROMPT) + 16)
120 #define CONFIG_ENV_SIZE SZ_16K
121 #define CONFIG_ENV_IS_IN_FAT
122 #define FAT_ENV_INTERFACE "mmc"
123 #define FAT_ENV_DEVICE_AND_PART "0:1"
124 #define FAT_ENV_FILE "uboot.env"
125 #define CONFIG_FAT_WRITE
126 #define CONFIG_ENV_VARS_UBOOT_CONFIG
127 #define CONFIG_SYS_LOAD_ADDR 0x1000000
128 #define CONFIG_PREBOOT "usb start"
131 #define CONFIG_SYS_MAXARGS 16
132 #define CONFIG_COMMAND_HISTORY
135 #define CONFIG_PARTITION_UUIDS
136 #define CONFIG_CMD_PART
138 /* ATAGs support for bootm/bootz */
139 #define CONFIG_SETUP_MEMORY_TAGS
140 #define CONFIG_CMDLINE_TAG
141 #define CONFIG_INITRD_TAG
143 #include <config_distro_defaults.h>
146 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
147 #define ENV_DEVICE_SETTINGS \
148 "stdin=serial,usbkbd\0" \
149 "stdout=serial,lcd\0" \
150 "stderr=serial,lcd\0"
153 * Memory layout for where various images get loaded by boot scripts:
155 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
157 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
158 * binary firmware loads a DT to address 0x100, so we choose this address to
159 * match it. This allows custom boot scripts to pass this DT on to Linux
160 * simply by not over-writing the data at this address. When using U-Boot,
161 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
162 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
164 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
165 * something else. Put it low in memory to avoid conflicts.
167 * kernel_addr_r must be within the first 128M of RAM in order for the
168 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
169 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
170 * should not overlap that area, or the kernel will have to copy itself
171 * somewhere else before decompression. Similarly, the address of any other
172 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
173 * this up to 16M allows for a sizable kernel to be decompressed below the
174 * compressed load address.
176 * scriptaddr can be pretty much anywhere that doesn't conflict with something
177 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
179 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
180 * for any boot script to be up to 1M, which is hopefully plenty.
182 #define ENV_MEM_LAYOUT_SETTINGS \
183 "fdt_high=ffffffff\0" \
184 "initrd_high=ffffffff\0" \
185 "fdt_addr_r=0x00000100\0" \
186 "pxefile_addr_r=0x00100000\0" \
187 "kernel_addr_r=0x01000000\0" \
188 "scriptaddr=0x02000000\0" \
189 "ramdisk_addr_r=0x02100000\0" \
191 #define BOOT_TARGET_DEVICES(func) \
196 #include <config_distro_bootcmd.h>
198 #define CONFIG_EXTRA_ENV_SETTINGS \
199 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
200 ENV_DEVICE_SETTINGS \
201 ENV_MEM_LAYOUT_SETTINGS \