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
18 #define CONFIG_SYS_CACHELINE_SIZE 32
20 #define CONFIG_SYS_CACHELINE_SIZE 64
23 /* Architecture, CPU, etc.*/
24 #define CONFIG_ARCH_CPU_INIT
26 /* Use SoC timer for AArch32, but architected timer for AArch64 */
28 #define CONFIG_SYS_TIMER_RATE 1000000
29 #define CONFIG_SYS_TIMER_COUNTER \
30 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
34 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
35 * so 2708 has historically been used rather than a dedicated 2835 ID.
37 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
38 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
39 * rather than obtaining a valid ID:-/
41 * For the bcm2837, hopefully a machine type is not needed, since everything
45 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
49 #define CONFIG_NR_DRAM_BANKS 1
50 #define CONFIG_SYS_SDRAM_BASE 0x00000000
52 #define CONFIG_SYS_TEXT_BASE 0x00080000
54 #define CONFIG_SYS_TEXT_BASE 0x00008000
56 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
58 * The board really has 256M. However, the VC (VideoCore co-processor) shares
59 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
60 * smaller amount of RAM is present in order to avoid stomping on the area
63 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
64 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
65 CONFIG_SYS_SDRAM_SIZE - \
66 GENERATED_GBL_DATA_SIZE)
67 #define CONFIG_SYS_MALLOC_LEN SZ_4M
68 #define CONFIG_SYS_MEMTEST_START 0x00100000
69 #define CONFIG_SYS_MEMTEST_END 0x00200000
70 #define CONFIG_LOADADDR 0x00200000
73 #define CONFIG_SYS_NO_FLASH
77 #define CONFIG_BCM2835_GPIO
80 #define CONFIG_LCD_DT_SIMPLEFB
81 #define LCD_BPP LCD_COLOR16
83 * Prevent allocation of RAM for FB; the real FB address is queried
84 * dynamically from the VideoCore co-processor, and comes from RAM
85 * not owned by the ARM CPU.
87 #define CONFIG_FB_ADDR 0
88 #define CONFIG_VIDEO_BCM2835
89 #define CONFIG_SYS_WHITE_ON_BLACK
90 #define CONFIG_CONSOLE_SCROLL_LINES 10
92 /* SD/MMC configuration */
93 #define CONFIG_GENERIC_MMC
96 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
97 #define CONFIG_BCM2835_SDHCI
99 #define CONFIG_CMD_USB
100 #ifdef CONFIG_CMD_USB
101 #define CONFIG_USB_DWC2
102 #ifndef CONFIG_BCM2835
103 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
105 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
107 #define CONFIG_USB_STORAGE
108 #define CONFIG_USB_HOST_ETHER
109 #define CONFIG_USB_ETHER_SMSC95XX
110 #define CONFIG_MISC_INIT_R
111 #define CONFIG_USB_KEYBOARD
112 #define CONFIG_SYS_USB_EVENT_POLL
113 #define CONFIG_SYS_STDIO_DEREGISTER
117 #ifdef CONFIG_BCM2837
118 #define CONFIG_BCM283X_MU_SERIAL
120 #define CONFIG_PL01X_SERIAL
122 #define CONFIG_CONS_INDEX 0
123 #define CONFIG_BAUDRATE 115200
125 /* Console configuration */
126 #define CONFIG_SYS_CBSIZE 1024
127 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
128 sizeof(CONFIG_SYS_PROMPT) + 16)
131 #define CONFIG_ENV_SIZE SZ_16K
132 #define CONFIG_ENV_IS_IN_FAT
133 #define FAT_ENV_INTERFACE "mmc"
134 #define FAT_ENV_DEVICE_AND_PART "0:1"
135 #define FAT_ENV_FILE "uboot.env"
136 #define CONFIG_FAT_WRITE
137 #define CONFIG_ENV_VARS_UBOOT_CONFIG
138 #define CONFIG_SYS_LOAD_ADDR 0x1000000
139 #define CONFIG_CONSOLE_MUX
140 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
141 #define CONFIG_PREBOOT "usb start"
144 #define CONFIG_SYS_MAXARGS 16
145 #define CONFIG_COMMAND_HISTORY
148 #define CONFIG_CMD_MMC
149 #define CONFIG_PARTITION_UUIDS
150 #define CONFIG_CMD_PART
152 /* ATAGs support for bootm/bootz */
153 #define CONFIG_SETUP_MEMORY_TAGS
154 #define CONFIG_CMDLINE_TAG
155 #define CONFIG_INITRD_TAG
157 #include <config_distro_defaults.h>
160 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
161 #define ENV_DEVICE_SETTINGS \
162 "stdin=serial,usbkbd\0" \
163 "stdout=serial,lcd\0" \
164 "stderr=serial,lcd\0"
167 * Memory layout for where various images get loaded by boot scripts:
169 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
171 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
172 * binary firmware loads a DT to address 0x100, so we choose this address to
173 * match it. This allows custom boot scripts to pass this DT on to Linux
174 * simply by not over-writing the data at this address. When using U-Boot,
175 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
176 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
178 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
179 * something else. Put it low in memory to avoid conflicts.
181 * kernel_addr_r must be within the first 128M of RAM in order for the
182 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
183 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
184 * should not overlap that area, or the kernel will have to copy itself
185 * somewhere else before decompression. Similarly, the address of any other
186 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
187 * this up to 16M allows for a sizable kernel to be decompressed below the
188 * compressed load address.
190 * scriptaddr can be pretty much anywhere that doesn't conflict with something
191 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
193 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
194 * for any boot script to be up to 1M, which is hopefully plenty.
196 #define ENV_MEM_LAYOUT_SETTINGS \
197 "fdt_high=ffffffff\0" \
198 "initrd_high=ffffffff\0" \
199 "fdt_addr_r=0x00000100\0" \
200 "pxefile_addr_r=0x00100000\0" \
201 "kernel_addr_r=0x01000000\0" \
202 "scriptaddr=0x02000000\0" \
203 "ramdisk_addr_r=0x02100000\0" \
205 #define BOOT_TARGET_DEVICES(func) \
210 #include <config_distro_bootcmd.h>
212 #define CONFIG_EXTRA_ENV_SETTINGS \
213 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
214 ENV_DEVICE_SETTINGS \
215 ENV_MEM_LAYOUT_SETTINGS \
218 #define CONFIG_BOOTDELAY 2