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Tom Rini10e47792018-05-06 17:58:06 -04001/* SPDX-License-Identifier: GPL-2.0 */
Stephen Warren0e012c32012-08-05 16:07:22 +00002/*
Stephen Warrend8845db2016-04-04 20:00:41 -06003 * (C) Copyright 2012-2016 Stephen Warren
Stephen Warren0e012c32012-08-05 16:07:22 +00004 */
5
6#ifndef __CONFIG_H
7#define __CONFIG_H
8
Stephen Warrend8845db2016-04-04 20:00:41 -06009#include <linux/sizes.h>
10#include <asm/arch/timer.h>
11
Matthias Brugger2c68dee2019-11-19 16:01:03 +010012#ifndef __ASSEMBLY__
13#include <asm/arch/base.h>
14#endif
15
Stephen Warrend8845db2016-04-04 20:00:41 -060016#if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B)
17#define CONFIG_SKIP_LOWLEVEL_INIT
18#endif
19
Stephen Warrend8845db2016-04-04 20:00:41 -060020/* Architecture, CPU, etc.*/
Stephen Warrend8845db2016-04-04 20:00:41 -060021
22/* Use SoC timer for AArch32, but architected timer for AArch64 */
23#ifndef CONFIG_ARM64
24#define CONFIG_SYS_TIMER_RATE 1000000
25#define CONFIG_SYS_TIMER_COUNTER \
26 (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
27#endif
28
Tom Rini48157342017-01-25 20:42:35 -050029/*
30 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
31 * so 2708 has historically been used rather than a dedicated 2835 ID.
32 *
33 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
34 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
35 * rather than obtaining a valid ID:-/
36 *
37 * For the bcm2837, hopefully a machine type is not needed, since everything
38 * is DT.
39 */
40#ifdef CONFIG_BCM2835
41#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
42#endif
43
Stephen Warrend8845db2016-04-04 20:00:41 -060044/* Memory layout */
Stephen Warrend8845db2016-04-04 20:00:41 -060045#define CONFIG_SYS_SDRAM_BASE 0x00000000
Stephen Warrend8845db2016-04-04 20:00:41 -060046#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
47/*
48 * The board really has 256M. However, the VC (VideoCore co-processor) shares
49 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
50 * smaller amount of RAM is present in order to avoid stomping on the area
51 * the VC uses.
52 */
53#define CONFIG_SYS_SDRAM_SIZE SZ_128M
54#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
55 CONFIG_SYS_SDRAM_SIZE - \
56 GENERATED_GBL_DATA_SIZE)
57#define CONFIG_SYS_MALLOC_LEN SZ_4M
58#define CONFIG_SYS_MEMTEST_START 0x00100000
59#define CONFIG_SYS_MEMTEST_END 0x00200000
60#define CONFIG_LOADADDR 0x00200000
61
Bonnans, Laurenta0c20302019-07-31 11:59:41 +000062#ifdef CONFIG_ARM64
63#define CONFIG_SYS_BOOTM_LEN SZ_64M
64#endif
65
Stephen Warrend8845db2016-04-04 20:00:41 -060066/* Devices */
67/* GPIO */
68#define CONFIG_BCM2835_GPIO
69/* LCD */
Stephen Warrend8845db2016-04-04 20:00:41 -060070#define CONFIG_LCD_DT_SIMPLEFB
Stephen Warrend8845db2016-04-04 20:00:41 -060071#define CONFIG_VIDEO_BCM2835
Stephen Warrend8845db2016-04-04 20:00:41 -060072
Stephen Warrend8845db2016-04-04 20:00:41 -060073#ifdef CONFIG_CMD_USB
Simon Glass1536d8b2015-08-07 07:42:22 -060074#define CONFIG_TFTP_TSIZE
Stephen Warrend8845db2016-04-04 20:00:41 -060075#endif
76
Stephen Warrend8845db2016-04-04 20:00:41 -060077/* Console configuration */
78#define CONFIG_SYS_CBSIZE 1024
Stephen Warrend8845db2016-04-04 20:00:41 -060079
80/* Environment */
Stephen Warrend8845db2016-04-04 20:00:41 -060081#define CONFIG_SYS_LOAD_ADDR 0x1000000
Stephen Warrend8845db2016-04-04 20:00:41 -060082
83/* Shell */
Stephen Warrend8845db2016-04-04 20:00:41 -060084
Stephen Warrend8845db2016-04-04 20:00:41 -060085/* ATAGs support for bootm/bootz */
86#define CONFIG_SETUP_MEMORY_TAGS
87#define CONFIG_CMDLINE_TAG
88#define CONFIG_INITRD_TAG
89
Stephen Warrend8845db2016-04-04 20:00:41 -060090/* Environment */
Stephen Warrend8845db2016-04-04 20:00:41 -060091#define ENV_DEVICE_SETTINGS \
92 "stdin=serial,usbkbd\0" \
Simon Glass39254d02017-04-05 16:23:44 -060093 "stdout=serial,vidconsole\0" \
94 "stderr=serial,vidconsole\0"
Stephen Warrend8845db2016-04-04 20:00:41 -060095
Tuomas Tynkkynen8c62fc02018-04-20 13:03:48 +030096#ifdef CONFIG_ARM64
97#define FDT_HIGH "ffffffffffffffff"
98#define INITRD_HIGH "ffffffffffffffff"
99#else
100#define FDT_HIGH "ffffffff"
101#define INITRD_HIGH "ffffffff"
102#endif
103
Stephen Warrend8845db2016-04-04 20:00:41 -0600104/*
105 * Memory layout for where various images get loaded by boot scripts:
106 *
107 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
108 *
Tuomas Tynkkynen9acd5712018-04-20 13:03:49 +0300109 * Older versions of the boot firmware place the firmware-loaded DTB at 0x100,
110 * newer versions place it in high memory. So prevent U-Boot from doing its own
111 * DTB + initrd relocation so that we won't accidentally relocate the initrd
112 * over the firmware-loaded DTB and generally try to lay out things starting
113 * from the bottom of RAM.
Stephen Warrend8845db2016-04-04 20:00:41 -0600114 *
Tuomas Tynkkynen9acd5712018-04-20 13:03:49 +0300115 * kernel_addr_r has different constraints on ARM and Aarch64. For 32-bit ARM,
116 * it must be within the first 128M of RAM in order for the kernel's
117 * CONFIG_AUTO_ZRELADDR option to work. The kernel itself will be decompressed
118 * to 0x8000 but the decompressor clobbers 0x4000-0x8000 as well. The
119 * decompressor also likes to relocate itself to right past the end of the
120 * decompressed kernel, so in total the sum of the compressed and and
121 * decompressed kernel needs to be reserved.
Stephen Warrend8845db2016-04-04 20:00:41 -0600122 *
Tuomas Tynkkynen9acd5712018-04-20 13:03:49 +0300123 * For Aarch64, the kernel image is uncompressed and must be loaded at
124 * text_offset bytes (specified in the header of the Image) into a 2MB
125 * boundary. The 'booti' command relocates the image if necessary. Linux uses
126 * a default text_offset of 0x80000. In summary, loading at 0x80000
127 * satisfies all these constraints and reserving memory up to 0x02400000
128 * permits fairly large (roughly 36M) kernels.
Stephen Warrend8845db2016-04-04 20:00:41 -0600129 *
Tuomas Tynkkynen9acd5712018-04-20 13:03:49 +0300130 * scriptaddr and pxefile_addr_r can be pretty much anywhere that doesn't
131 * conflict with something else. Reserving 1M for each of them at
132 * 0x02400000-0x02500000 and 0x02500000-0x02600000 should be plenty.
Stephen Warrend8845db2016-04-04 20:00:41 -0600133 *
Tuomas Tynkkynen9acd5712018-04-20 13:03:49 +0300134 * On ARM, both the DTB and any possible initrd must be loaded such that they
135 * fit inside the lowmem mapping in Linux. In practice, this usually means not
136 * more than ~700M away from the start of the kernel image but this number can
137 * be larger OR smaller depending on e.g. the 'vmalloc=xxxM' command line
138 * parameter given to the kernel. So reserving memory from low to high
139 * satisfies this constraint again. Reserving 1M at 0x02600000-0x02700000 for
140 * the DTB leaves rest of the free RAM to the initrd starting at 0x02700000.
141 * Even with the smallest possible CPU-GPU memory split of the CPU getting
142 * only 64M, the remaining 25M starting at 0x02700000 should allow quite
143 * large initrds before they start colliding with U-Boot.
Stephen Warrend8845db2016-04-04 20:00:41 -0600144 */
145#define ENV_MEM_LAYOUT_SETTINGS \
Tuomas Tynkkynen8c62fc02018-04-20 13:03:48 +0300146 "fdt_high=" FDT_HIGH "\0" \
147 "initrd_high=" INITRD_HIGH "\0" \
Tuomas Tynkkynen9acd5712018-04-20 13:03:49 +0300148 "kernel_addr_r=0x00080000\0" \
149 "scriptaddr=0x02400000\0" \
150 "pxefile_addr_r=0x02500000\0" \
151 "fdt_addr_r=0x02600000\0" \
152 "ramdisk_addr_r=0x02700000\0"
Stephen Warrend8845db2016-04-04 20:00:41 -0600153
akaher2191d542019-04-11 05:23:50 +0000154#if CONFIG_IS_ENABLED(CMD_MMC)
155 #define BOOT_TARGET_MMC(func) \
156 func(MMC, mmc, 0) \
157 func(MMC, mmc, 1)
158#else
159 #define BOOT_TARGET_MMC(func)
160#endif
161
162#if CONFIG_IS_ENABLED(CMD_USB)
163 #define BOOT_TARGET_USB(func) func(USB, usb, 0)
164#else
165 #define BOOT_TARGET_USB(func)
166#endif
167
168#if CONFIG_IS_ENABLED(CMD_PXE)
169 #define BOOT_TARGET_PXE(func) func(PXE, pxe, na)
170#else
171 #define BOOT_TARGET_PXE(func)
172#endif
173
174#if CONFIG_IS_ENABLED(CMD_DHCP)
175 #define BOOT_TARGET_DHCP(func) func(DHCP, dhcp, na)
176#else
177 #define BOOT_TARGET_DHCP(func)
178#endif
179
Stephen Warrend8845db2016-04-04 20:00:41 -0600180#define BOOT_TARGET_DEVICES(func) \
akaher2191d542019-04-11 05:23:50 +0000181 BOOT_TARGET_MMC(func) \
182 BOOT_TARGET_USB(func) \
183 BOOT_TARGET_PXE(func) \
184 BOOT_TARGET_DHCP(func)
185
Stephen Warrend8845db2016-04-04 20:00:41 -0600186#include <config_distro_bootcmd.h>
187
188#define CONFIG_EXTRA_ENV_SETTINGS \
189 "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
190 ENV_DEVICE_SETTINGS \
191 ENV_MEM_LAYOUT_SETTINGS \
192 BOOTENV
Alexander Stein50e81842015-07-24 09:22:11 +0200193
Stephen Warren0e012c32012-08-05 16:07:22 +0000194
Stephen Warren0e012c32012-08-05 16:07:22 +0000195#endif