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 #define CONFIG_NR_DRAM_BANKS 1
29 #define CONFIG_SYS_SDRAM_BASE 0x00000000
31 #define CONFIG_SYS_TEXT_BASE 0x00080000
33 #define CONFIG_SYS_TEXT_BASE 0x00008000
35 #define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
37 * The board really has 256M. However, the VC (VideoCore co-processor) shares
38 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
39 * smaller amount of RAM is present in order to avoid stomping on the area
42 #define CONFIG_SYS_SDRAM_SIZE SZ_128M
43 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
44 CONFIG_SYS_SDRAM_SIZE - \
45 GENERATED_GBL_DATA_SIZE)
46 #define CONFIG_SYS_MALLOC_LEN SZ_4M
47 #define CONFIG_SYS_MEMTEST_START 0x00100000
48 #define CONFIG_SYS_MEMTEST_END 0x00200000
49 #define CONFIG_LOADADDR 0x00200000
52 #define CONFIG_SYS_NO_FLASH
56 #define CONFIG_BCM2835_GPIO
58 #define CONFIG_LCD_DT_SIMPLEFB
59 #define LCD_BPP LCD_COLOR32
61 * Prevent allocation of RAM for FB; the real FB address is queried
62 * dynamically from the VideoCore co-processor, and comes from RAM
63 * not owned by the ARM CPU.
65 #define CONFIG_FB_ADDR 0
66 #define CONFIG_VIDEO_BCM2835
67 #define CONFIG_SYS_WHITE_ON_BLACK
69 /* SD/MMC configuration */
70 #define CONFIG_GENERIC_MMC
73 #define CONFIG_USB_DWC2
74 #ifndef CONFIG_BCM2835
75 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
77 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
79 #define CONFIG_USB_HOST_ETHER
80 #define CONFIG_USB_ETHER_SMSC95XX
81 #define CONFIG_TFTP_TSIZE
82 #define CONFIG_MISC_INIT_R
83 #define CONFIG_SYS_USB_EVENT_POLL
88 #define CONFIG_BCM283X_MU_SERIAL
90 #define CONFIG_PL01X_SERIAL
92 #define CONFIG_CONS_INDEX 0
93 #define CONFIG_BAUDRATE 115200
95 /* Console configuration */
96 #define CONFIG_SYS_CBSIZE 1024
97 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
98 sizeof(CONFIG_SYS_PROMPT) + 16)
101 #define CONFIG_ENV_SIZE SZ_16K
102 #define CONFIG_ENV_IS_IN_FAT
103 #define FAT_ENV_INTERFACE "mmc"
104 #define FAT_ENV_DEVICE_AND_PART "0:1"
105 #define FAT_ENV_FILE "uboot.env"
106 #define CONFIG_FAT_WRITE
107 #define CONFIG_ENV_VARS_UBOOT_CONFIG
108 #define CONFIG_SYS_LOAD_ADDR 0x1000000
109 #define CONFIG_PREBOOT "usb start"
112 #define CONFIG_SYS_MAXARGS 16
113 #define CONFIG_COMMAND_HISTORY
115 /* ATAGs support for bootm/bootz */
116 #define CONFIG_SETUP_MEMORY_TAGS
117 #define CONFIG_CMDLINE_TAG
118 #define CONFIG_INITRD_TAG
120 #include <config_distro_defaults.h>
123 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
124 #define ENV_DEVICE_SETTINGS \
125 "stdin=serial,usbkbd\0" \
126 "stdout=serial,lcd\0" \
127 "stderr=serial,lcd\0"
130 * Memory layout for where various images get loaded by boot scripts:
132 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
134 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
135 * binary firmware loads a DT to address 0x100, so we choose this address to
136 * match it. This allows custom boot scripts to pass this DT on to Linux
137 * simply by not over-writing the data at this address. When using U-Boot,
138 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
139 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
141 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
142 * something else. Put it low in memory to avoid conflicts.
144 * kernel_addr_r must be within the first 128M of RAM in order for the
145 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
146 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
147 * should not overlap that area, or the kernel will have to copy itself
148 * somewhere else before decompression. Similarly, the address of any other
149 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
150 * this up to 16M allows for a sizable kernel to be decompressed below the
151 * compressed load address.
153 * scriptaddr can be pretty much anywhere that doesn't conflict with something
154 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
156 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
157 * for any boot script to be up to 1M, which is hopefully plenty.
159 #define ENV_MEM_LAYOUT_SETTINGS \
160 "fdt_high=ffffffff\0" \
161 "initrd_high=ffffffff\0" \
162 "fdt_addr_r=0x00000100\0" \
163 "pxefile_addr_r=0x00100000\0" \
164 "kernel_addr_r=0x01000000\0" \
165 "scriptaddr=0x02000000\0" \
166 "ramdisk_addr_r=0x02100000\0" \
168 #define BOOT_TARGET_DEVICES(func) \
173 #include <config_distro_bootcmd.h>
175 #define CONFIG_EXTRA_ENV_SETTINGS \
176 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
177 ENV_DEVICE_SETTINGS \
178 ENV_MEM_LAYOUT_SETTINGS \