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Stephen Warren0d04f342012-08-05 16:07:22 +00001/*
Stephen Warrenfe84ebf2016-04-04 20:00:41 -06002 * (C) Copyright 2012-2016 Stephen Warren
Stephen Warren0d04f342012-08-05 16:07:22 +00003 *
Stephen Warrena0331712015-02-16 12:16:13 -07004 * SPDX-License-Identifier: GPL-2.0
Stephen Warren0d04f342012-08-05 16:07:22 +00005 */
6
7#ifndef __CONFIG_H
8#define __CONFIG_H
9
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060010#include <linux/sizes.h>
11#include <asm/arch/timer.h>
Alexander Stein060f9bf2015-07-24 09:22:11 +020012
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060013#if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B)
14#define CONFIG_SKIP_LOWLEVEL_INIT
15#endif
16
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060017/* Architecture, CPU, etc.*/
18#define CONFIG_ARCH_CPU_INIT
19
20/* Use SoC timer for AArch32, but architected timer for AArch64 */
21#ifndef CONFIG_ARM64
22#define CONFIG_SYS_TIMER_RATE 1000000
23#define CONFIG_SYS_TIMER_COUNTER \
24 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
25#endif
26
Tom Rini94ba26f2017-01-25 20:42:35 -050027/*
28 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
29 * so 2708 has historically been used rather than a dedicated 2835 ID.
30 *
31 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
32 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
33 * rather than obtaining a valid ID:-/
34 *
35 * For the bcm2837, hopefully a machine type is not needed, since everything
36 * is DT.
37 */
38#ifdef CONFIG_BCM2835
39#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
40#endif
41
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060042/* Memory layout */
43#define CONFIG_NR_DRAM_BANKS 1
44#define CONFIG_SYS_SDRAM_BASE 0x00000000
Stephen Warren108f8412016-04-15 20:42:59 -060045#ifdef CONFIG_ARM64
46#define CONFIG_SYS_TEXT_BASE 0x00080000
47#else
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060048#define CONFIG_SYS_TEXT_BASE 0x00008000
Stephen Warren108f8412016-04-15 20:42:59 -060049#endif
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060050#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
51/*
52 * The board really has 256M. However, the VC (VideoCore co-processor) shares
53 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
54 * smaller amount of RAM is present in order to avoid stomping on the area
55 * the VC uses.
56 */
57#define CONFIG_SYS_SDRAM_SIZE SZ_128M
58#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
59 CONFIG_SYS_SDRAM_SIZE - \
60 GENERATED_GBL_DATA_SIZE)
61#define CONFIG_SYS_MALLOC_LEN SZ_4M
62#define CONFIG_SYS_MEMTEST_START 0x00100000
63#define CONFIG_SYS_MEMTEST_END 0x00200000
64#define CONFIG_LOADADDR 0x00200000
65
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060066/* Devices */
67/* GPIO */
68#define CONFIG_BCM2835_GPIO
69/* LCD */
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060070#define CONFIG_LCD_DT_SIMPLEFB
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060071#define CONFIG_VIDEO_BCM2835
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060072
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060073#ifdef CONFIG_CMD_USB
Simon Glassd0375f32015-08-07 07:42:22 -060074#define CONFIG_TFTP_TSIZE
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060075#define CONFIG_MISC_INIT_R
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060076#endif
77
78/* Console UART */
79#ifdef CONFIG_BCM2837
80#define CONFIG_BCM283X_MU_SERIAL
81#else
82#define CONFIG_PL01X_SERIAL
83#endif
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060084
85/* Console configuration */
86#define CONFIG_SYS_CBSIZE 1024
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060087
88/* Environment */
89#define CONFIG_ENV_SIZE SZ_16K
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060090#define CONFIG_ENV_VARS_UBOOT_CONFIG
91#define CONFIG_SYS_LOAD_ADDR 0x1000000
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060092#define CONFIG_PREBOOT "usb start"
93
94/* Shell */
Alexey Brodkina1b343d2017-04-18 22:09:10 +030095#define CONFIG_CMDLINE_EDITING
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060096
Stephen Warrenfe84ebf2016-04-04 20:00:41 -060097/* ATAGs support for bootm/bootz */
98#define CONFIG_SETUP_MEMORY_TAGS
99#define CONFIG_CMDLINE_TAG
100#define CONFIG_INITRD_TAG
101
102#include <config_distro_defaults.h>
103
104/* Environment */
105#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
106#define ENV_DEVICE_SETTINGS \
107 "stdin=serial,usbkbd\0" \
Simon Glassea843b62017-04-05 16:23:44 -0600108 "stdout=serial,vidconsole\0" \
109 "stderr=serial,vidconsole\0"
Stephen Warrenfe84ebf2016-04-04 20:00:41 -0600110
111/*
112 * Memory layout for where various images get loaded by boot scripts:
113 *
114 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
115 *
116 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
117 * binary firmware loads a DT to address 0x100, so we choose this address to
118 * match it. This allows custom boot scripts to pass this DT on to Linux
119 * simply by not over-writing the data at this address. When using U-Boot,
120 * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
121 * and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
122 *
123 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
124 * something else. Put it low in memory to avoid conflicts.
125 *
126 * kernel_addr_r must be within the first 128M of RAM in order for the
127 * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
128 * decompress itself to 0x8000 after the start of RAM, kernel_addr_r
129 * should not overlap that area, or the kernel will have to copy itself
130 * somewhere else before decompression. Similarly, the address of any other
131 * data passed to the kernel shouldn't overlap the start of RAM. Pushing
132 * this up to 16M allows for a sizable kernel to be decompressed below the
133 * compressed load address.
134 *
135 * scriptaddr can be pretty much anywhere that doesn't conflict with something
136 * else. Choosing 32M allows for the compressed kernel to be up to 16M.
137 *
138 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
139 * for any boot script to be up to 1M, which is hopefully plenty.
140 */
141#define ENV_MEM_LAYOUT_SETTINGS \
142 "fdt_high=ffffffff\0" \
143 "initrd_high=ffffffff\0" \
144 "fdt_addr_r=0x00000100\0" \
145 "pxefile_addr_r=0x00100000\0" \
146 "kernel_addr_r=0x01000000\0" \
147 "scriptaddr=0x02000000\0" \
148 "ramdisk_addr_r=0x02100000\0" \
149
150#define BOOT_TARGET_DEVICES(func) \
151 func(MMC, mmc, 0) \
152 func(USB, usb, 0) \
153 func(PXE, pxe, na) \
154 func(DHCP, dhcp, na)
155#include <config_distro_bootcmd.h>
156
157#define CONFIG_EXTRA_ENV_SETTINGS \
158 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
159 ENV_DEVICE_SETTINGS \
160 ENV_MEM_LAYOUT_SETTINGS \
161 BOOTENV
162
Stephen Warren0d04f342012-08-05 16:07:22 +0000163
Stephen Warren0d04f342012-08-05 16:07:22 +0000164#endif