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Stephen Warren46414292015-02-16 12:16:15 -07001/*
2 * (C) Copyright 2012,2015 Stephen Warren
3 *
4 * SPDX-License-Identifier: GPL-2.0
5 */
6
7#ifndef _RPI_COMMON_H_
8#define _RPI_COMMON_H_
9
10#include <linux/sizes.h>
Marek Vasute390bd52015-05-04 22:54:37 +020011#include <asm/arch/timer.h>
Stephen Warren46414292015-02-16 12:16:15 -070012
13/* Architecture, CPU, etc.*/
Stephen Warren46414292015-02-16 12:16:15 -070014#define CONFIG_BCM2835
15#define CONFIG_ARCH_CPU_INIT
Marek Vasute390bd52015-05-04 22:54:37 +020016
17#define CONFIG_SYS_TIMER_RATE 1000000
18#define CONFIG_SYS_TIMER_COUNTER \
19 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
20
Stephen Warren46414292015-02-16 12:16:15 -070021/*
22 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
23 * so 2708 has historically been used rather than a dedicated 2835 ID.
24 *
25 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
26 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
27 * rather than obtaining a valid ID:-/
28 */
29#ifndef CONFIG_BCM2836
30#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
31#endif
32
33/* Memory layout */
34#define CONFIG_NR_DRAM_BANKS 1
35#define CONFIG_SYS_SDRAM_BASE 0x00000000
36#define CONFIG_SYS_TEXT_BASE 0x00008000
37#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
38/*
39 * The board really has 256M. However, the VC (VideoCore co-processor) shares
40 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
41 * smaller amount of RAM is present in order to avoid stomping on the area
42 * the VC uses.
43 */
44#define CONFIG_SYS_SDRAM_SIZE SZ_128M
45#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
46 CONFIG_SYS_SDRAM_SIZE - \
47 GENERATED_GBL_DATA_SIZE)
48#define CONFIG_SYS_MALLOC_LEN SZ_4M
49#define CONFIG_SYS_MEMTEST_START 0x00100000
50#define CONFIG_SYS_MEMTEST_END 0x00200000
51#define CONFIG_LOADADDR 0x00200000
52
53/* Flash */
54#define CONFIG_SYS_NO_FLASH
55
56/* Devices */
57/* GPIO */
58#define CONFIG_BCM2835_GPIO
59/* LCD */
60#define CONFIG_LCD
61#define CONFIG_LCD_DT_SIMPLEFB
62#define LCD_BPP LCD_COLOR16
63/*
64 * Prevent allocation of RAM for FB; the real FB address is queried
65 * dynamically from the VideoCore co-processor, and comes from RAM
66 * not owned by the ARM CPU.
67 */
68#define CONFIG_FB_ADDR 0
69#define CONFIG_VIDEO_BCM2835
70#define CONFIG_SYS_WHITE_ON_BLACK
71
72/* SD/MMC configuration */
73#define CONFIG_GENERIC_MMC
74#define CONFIG_MMC
75#define CONFIG_SDHCI
76#define CONFIG_MMC_SDHCI_IO_ACCESSORS
77#define CONFIG_BCM2835_SDHCI
78
79#define CONFIG_CMD_USB
80#ifdef CONFIG_CMD_USB
81#define CONFIG_USB_DWC2
82#ifdef CONFIG_BCM2836
83#define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
84#else
85#define CONFIG_USB_DWC2_REG_ADDR 0x20980000
86#endif
87#define CONFIG_USB_STORAGE
88#define CONFIG_USB_HOST_ETHER
89#define CONFIG_USB_ETHER_SMSC95XX
90#define CONFIG_MISC_INIT_R
Stephen Warren1ff60152015-12-15 20:50:22 -070091#define CONFIG_USB_KEYBOARD
92#define CONFIG_SYS_USB_EVENT_POLL
93#define CONFIG_SYS_STDIO_DEREGISTER
Stephen Warren46414292015-02-16 12:16:15 -070094#endif
95
96/* Console UART */
97#define CONFIG_PL01X_SERIAL
98#define CONFIG_CONS_INDEX 0
99#define CONFIG_BAUDRATE 115200
100
101/* Console configuration */
102#define CONFIG_SYS_CBSIZE 1024
103#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
104 sizeof(CONFIG_SYS_PROMPT) + 16)
105
106/* Environment */
107#define CONFIG_ENV_SIZE SZ_16K
108#define CONFIG_ENV_IS_IN_FAT
109#define FAT_ENV_INTERFACE "mmc"
110#define FAT_ENV_DEVICE_AND_PART "0:1"
111#define FAT_ENV_FILE "uboot.env"
112#define CONFIG_FAT_WRITE
113#define CONFIG_ENV_VARS_UBOOT_CONFIG
114#define CONFIG_SYS_LOAD_ADDR 0x1000000
115#define CONFIG_CONSOLE_MUX
116#define CONFIG_SYS_CONSOLE_IS_IN_ENV
Stephen Warren1ff60152015-12-15 20:50:22 -0700117#define CONFIG_PREBOOT "usb start"
Stephen Warren46414292015-02-16 12:16:15 -0700118
119/* Shell */
120#define CONFIG_SYS_MAXARGS 8
Stephen Warren46414292015-02-16 12:16:15 -0700121#define CONFIG_COMMAND_HISTORY
122
123/* Commands */
Stephen Warren46414292015-02-16 12:16:15 -0700124#define CONFIG_CMD_MMC
125#define CONFIG_PARTITION_UUIDS
126#define CONFIG_CMD_PART
127
128/* Device tree support */
129#define CONFIG_OF_BOARD_SETUP
130/* ATAGs support for bootm/bootz */
131#define CONFIG_SETUP_MEMORY_TAGS
132#define CONFIG_CMDLINE_TAG
133#define CONFIG_INITRD_TAG
134
135#include <config_distro_defaults.h>
136
Stephen Warren46414292015-02-16 12:16:15 -0700137/* Environment */
Guillaume GARDETbff78562015-08-25 15:10:26 +0200138#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
Stephen Warren46414292015-02-16 12:16:15 -0700139#define ENV_DEVICE_SETTINGS \
Stephen Warren1ff60152015-12-15 20:50:22 -0700140 "stdin=serial,usbkbd\0" \
Stephen Warren46414292015-02-16 12:16:15 -0700141 "stdout=serial,lcd\0" \
142 "stderr=serial,lcd\0"
143
144/*
145 * Memory layout for where various images get loaded by boot scripts:
146 *
Stephen Warren685dc832016-02-05 22:45:46 -0700147 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
148 *
149 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
150 * binary firmware loads a DT to address 0x100, so we choose this address to
151 * match it. This allows custom boot scripts to pass this DT on to Linux
152 * simply by not over-writing the data at this address. When using U-Boot,
153 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
154 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
Stephen Warren46414292015-02-16 12:16:15 -0700155 *
156 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
157 * something else. Put it low in memory to avoid conflicts.
158 *
159 * kernel_addr_r must be within the first 128M of RAM in order for the
160 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
161 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
162 * should not overlap that area, or the kernel will have to copy itself
163 * somewhere else before decompression. Similarly, the address of any other
164 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
165 * this up to 16M allows for a sizable kernel to be decompressed below the
166 * compressed load address.
167 *
Stephen Warren685dc832016-02-05 22:45:46 -0700168 * scriptaddr can be pretty much anywhere that doesn't conflict with something
169 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
Stephen Warren46414292015-02-16 12:16:15 -0700170 *
171 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
Stephen Warren685dc832016-02-05 22:45:46 -0700172 * for any boot script to be up to 1M, which is hopefully plenty.
Stephen Warren46414292015-02-16 12:16:15 -0700173 */
174#define ENV_MEM_LAYOUT_SETTINGS \
Jonathan Liu14006a52015-08-22 20:27:17 +1000175 "fdt_addr_r=0x00000100\0" \
Stephen Warren46414292015-02-16 12:16:15 -0700176 "pxefile_addr_r=0x00100000\0" \
177 "kernel_addr_r=0x01000000\0" \
Jonathan Liu14006a52015-08-22 20:27:17 +1000178 "scriptaddr=0x02000000\0" \
Stephen Warren46414292015-02-16 12:16:15 -0700179 "ramdisk_addr_r=0x02100000\0" \
180
181#define BOOT_TARGET_DEVICES(func) \
182 func(MMC, mmc, 0) \
183 func(USB, usb, 0) \
184 func(PXE, pxe, na) \
185 func(DHCP, dhcp, na)
186#include <config_distro_bootcmd.h>
187
188#define CONFIG_EXTRA_ENV_SETTINGS \
189 ENV_DEVICE_SETTINGS \
190 ENV_MEM_LAYOUT_SETTINGS \
191 BOOTENV
192
193#define CONFIG_BOOTDELAY 2
194
195#endif