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 /* Architecture, CPU, etc.*/
14 #define CONFIG_ARCH_CPU_INIT
16 /* Use SoC timer for AArch32, but architected timer for AArch64 */
18 #define CONFIG_SYS_TIMER_RATE 1000000
19 #define CONFIG_SYS_TIMER_COUNTER \
20 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
24 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
25 * so 2708 has historically been used rather than a dedicated 2835 ID.
27 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
28 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
29 * rather than obtaining a valid ID:-/
31 * For the bcm2837, hopefully a machine type is not needed, since everything
35 #define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
39 #define CONFIG_NR_DRAM_BANKS 1
40 #define CONFIG_SYS_SDRAM_BASE 0x00000000
41 #define CONFIG_SYS_TEXT_BASE 0x00008000
42 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
44 * The board really has 256M. However, the VC (VideoCore co-processor) shares
45 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
46 * smaller amount of RAM is present in order to avoid stomping on the area
49 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
50 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
51 CONFIG_SYS_SDRAM_SIZE - \
52 GENERATED_GBL_DATA_SIZE)
53 #define CONFIG_SYS_MALLOC_LEN SZ_4M
54 #define CONFIG_SYS_MEMTEST_START 0x00100000
55 #define CONFIG_SYS_MEMTEST_END 0x00200000
56 #define CONFIG_LOADADDR 0x00200000
59 #define CONFIG_SYS_NO_FLASH
63 #define CONFIG_BCM2835_GPIO
66 #define CONFIG_LCD_DT_SIMPLEFB
67 #define LCD_BPP LCD_COLOR16
69 * Prevent allocation of RAM for FB; the real FB address is queried
70 * dynamically from the VideoCore co-processor, and comes from RAM
71 * not owned by the ARM CPU.
73 #define CONFIG_FB_ADDR 0
74 #define CONFIG_VIDEO_BCM2835
75 #define CONFIG_SYS_WHITE_ON_BLACK
76 #define CONFIG_CONSOLE_SCROLL_LINES 10
78 /* SD/MMC configuration */
79 #define CONFIG_GENERIC_MMC
82 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
83 #define CONFIG_BCM2835_SDHCI
85 #define CONFIG_CMD_USB
87 #define CONFIG_USB_DWC2
88 #ifndef CONFIG_BCM2835
89 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
91 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
93 #define CONFIG_USB_STORAGE
94 #define CONFIG_USB_HOST_ETHER
95 #define CONFIG_USB_ETHER_SMSC95XX
96 #define CONFIG_MISC_INIT_R
97 #define CONFIG_USB_KEYBOARD
98 #define CONFIG_SYS_USB_EVENT_POLL
99 #define CONFIG_SYS_STDIO_DEREGISTER
103 #ifdef CONFIG_BCM2837
104 #define CONFIG_BCM283X_MU_SERIAL
106 #define CONFIG_PL01X_SERIAL
108 #define CONFIG_CONS_INDEX 0
109 #define CONFIG_BAUDRATE 115200
111 /* Console configuration */
112 #define CONFIG_SYS_CBSIZE 1024
113 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
114 sizeof(CONFIG_SYS_PROMPT) + 16)
117 #define CONFIG_ENV_SIZE SZ_16K
118 #define CONFIG_ENV_IS_IN_FAT
119 #define FAT_ENV_INTERFACE "mmc"
120 #define FAT_ENV_DEVICE_AND_PART "0:1"
121 #define FAT_ENV_FILE "uboot.env"
122 #define CONFIG_FAT_WRITE
123 #define CONFIG_ENV_VARS_UBOOT_CONFIG
124 #define CONFIG_SYS_LOAD_ADDR 0x1000000
125 #define CONFIG_CONSOLE_MUX
126 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
127 #define CONFIG_PREBOOT "usb start"
130 #define CONFIG_SYS_MAXARGS 16
131 #define CONFIG_COMMAND_HISTORY
134 #define CONFIG_CMD_MMC
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 ENV_DEVICE_SETTINGS \
200 ENV_MEM_LAYOUT_SETTINGS \
203 #define CONFIG_BOOTDELAY 2