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
51 #define CONFIG_SYS_TEXT_BASE 0x00008000
52 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
54 * The board really has 256M. However, the VC (VideoCore co-processor) shares
55 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
56 * smaller amount of RAM is present in order to avoid stomping on the area
59 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
60 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
61 CONFIG_SYS_SDRAM_SIZE - \
62 GENERATED_GBL_DATA_SIZE)
63 #define CONFIG_SYS_MALLOC_LEN SZ_4M
64 #define CONFIG_SYS_MEMTEST_START 0x00100000
65 #define CONFIG_SYS_MEMTEST_END 0x00200000
66 #define CONFIG_LOADADDR 0x00200000
69 #define CONFIG_SYS_NO_FLASH
73 #define CONFIG_BCM2835_GPIO
76 #define CONFIG_LCD_DT_SIMPLEFB
77 #define LCD_BPP LCD_COLOR16
79 * Prevent allocation of RAM for FB; the real FB address is queried
80 * dynamically from the VideoCore co-processor, and comes from RAM
81 * not owned by the ARM CPU.
83 #define CONFIG_FB_ADDR 0
84 #define CONFIG_VIDEO_BCM2835
85 #define CONFIG_SYS_WHITE_ON_BLACK
86 #define CONFIG_CONSOLE_SCROLL_LINES 10
88 /* SD/MMC configuration */
89 #define CONFIG_GENERIC_MMC
92 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
93 #define CONFIG_BCM2835_SDHCI
95 #define CONFIG_CMD_USB
97 #define CONFIG_USB_DWC2
98 #ifndef CONFIG_BCM2835
99 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
101 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
103 #define CONFIG_USB_STORAGE
104 #define CONFIG_USB_HOST_ETHER
105 #define CONFIG_USB_ETHER_SMSC95XX
106 #define CONFIG_MISC_INIT_R
107 #define CONFIG_USB_KEYBOARD
108 #define CONFIG_SYS_USB_EVENT_POLL
109 #define CONFIG_SYS_STDIO_DEREGISTER
113 #ifdef CONFIG_BCM2837
114 #define CONFIG_BCM283X_MU_SERIAL
116 #define CONFIG_PL01X_SERIAL
118 #define CONFIG_CONS_INDEX 0
119 #define CONFIG_BAUDRATE 115200
121 /* Console configuration */
122 #define CONFIG_SYS_CBSIZE 1024
123 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
124 sizeof(CONFIG_SYS_PROMPT) + 16)
127 #define CONFIG_ENV_SIZE SZ_16K
128 #define CONFIG_ENV_IS_IN_FAT
129 #define FAT_ENV_INTERFACE "mmc"
130 #define FAT_ENV_DEVICE_AND_PART "0:1"
131 #define FAT_ENV_FILE "uboot.env"
132 #define CONFIG_FAT_WRITE
133 #define CONFIG_ENV_VARS_UBOOT_CONFIG
134 #define CONFIG_SYS_LOAD_ADDR 0x1000000
135 #define CONFIG_CONSOLE_MUX
136 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
137 #define CONFIG_PREBOOT "usb start"
140 #define CONFIG_SYS_MAXARGS 16
141 #define CONFIG_COMMAND_HISTORY
144 #define CONFIG_CMD_MMC
145 #define CONFIG_PARTITION_UUIDS
146 #define CONFIG_CMD_PART
148 /* ATAGs support for bootm/bootz */
149 #define CONFIG_SETUP_MEMORY_TAGS
150 #define CONFIG_CMDLINE_TAG
151 #define CONFIG_INITRD_TAG
153 #include <config_distro_defaults.h>
156 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
157 #define ENV_DEVICE_SETTINGS \
158 "stdin=serial,usbkbd\0" \
159 "stdout=serial,lcd\0" \
160 "stderr=serial,lcd\0"
163 * Memory layout for where various images get loaded by boot scripts:
165 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
167 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
168 * binary firmware loads a DT to address 0x100, so we choose this address to
169 * match it. This allows custom boot scripts to pass this DT on to Linux
170 * simply by not over-writing the data at this address. When using U-Boot,
171 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
172 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
174 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
175 * something else. Put it low in memory to avoid conflicts.
177 * kernel_addr_r must be within the first 128M of RAM in order for the
178 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
179 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
180 * should not overlap that area, or the kernel will have to copy itself
181 * somewhere else before decompression. Similarly, the address of any other
182 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
183 * this up to 16M allows for a sizable kernel to be decompressed below the
184 * compressed load address.
186 * scriptaddr can be pretty much anywhere that doesn't conflict with something
187 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
189 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
190 * for any boot script to be up to 1M, which is hopefully plenty.
192 #define ENV_MEM_LAYOUT_SETTINGS \
193 "fdt_high=ffffffff\0" \
194 "initrd_high=ffffffff\0" \
195 "fdt_addr_r=0x00000100\0" \
196 "pxefile_addr_r=0x00100000\0" \
197 "kernel_addr_r=0x01000000\0" \
198 "scriptaddr=0x02000000\0" \
199 "ramdisk_addr_r=0x02100000\0" \
201 #define BOOT_TARGET_DEVICES(func) \
206 #include <config_distro_bootcmd.h>
208 #define CONFIG_EXTRA_ENV_SETTINGS \
209 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
210 ENV_DEVICE_SETTINGS \
211 ENV_MEM_LAYOUT_SETTINGS \
214 #define CONFIG_BOOTDELAY 2