Stephen Warren | 0e012c3 | 2012-08-05 16:07:22 +0000 | [diff] [blame] | 1 | /* |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 2 | * (C) Copyright 2012-2016 Stephen Warren |
Stephen Warren | 0e012c3 | 2012-08-05 16:07:22 +0000 | [diff] [blame] | 3 | * |
Stephen Warren | 29e494c | 2015-02-16 12:16:13 -0700 | [diff] [blame] | 4 | * SPDX-License-Identifier: GPL-2.0 |
Stephen Warren | 0e012c3 | 2012-08-05 16:07:22 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #ifndef __CONFIG_H |
| 8 | #define __CONFIG_H |
| 9 | |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 10 | #include <linux/sizes.h> |
| 11 | #include <asm/arch/timer.h> |
| 12 | |
| 13 | #if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B) |
| 14 | #define CONFIG_SKIP_LOWLEVEL_INIT |
| 15 | #endif |
| 16 | |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 17 | /* 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 Rini | 4815734 | 2017-01-25 20:42:35 -0500 | [diff] [blame] | 27 | /* |
| 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 Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 42 | /* Memory layout */ |
| 43 | #define CONFIG_NR_DRAM_BANKS 1 |
| 44 | #define CONFIG_SYS_SDRAM_BASE 0x00000000 |
Stephen Warren | 3d3d91c | 2016-04-15 20:42:59 -0600 | [diff] [blame] | 45 | #ifdef CONFIG_ARM64 |
| 46 | #define CONFIG_SYS_TEXT_BASE 0x00080000 |
| 47 | #else |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 48 | #define CONFIG_SYS_TEXT_BASE 0x00008000 |
Stephen Warren | 3d3d91c | 2016-04-15 20:42:59 -0600 | [diff] [blame] | 49 | #endif |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 50 | #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 Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 66 | /* Devices */ |
| 67 | /* GPIO */ |
| 68 | #define CONFIG_BCM2835_GPIO |
| 69 | /* LCD */ |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 70 | #define CONFIG_LCD_DT_SIMPLEFB |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 71 | #define CONFIG_VIDEO_BCM2835 |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 72 | |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 73 | #ifdef CONFIG_CMD_USB |
Simon Glass | 1536d8b | 2015-08-07 07:42:22 -0600 | [diff] [blame] | 74 | #define CONFIG_TFTP_TSIZE |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 75 | #define CONFIG_MISC_INIT_R |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 76 | #endif |
| 77 | |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 78 | /* Console configuration */ |
| 79 | #define CONFIG_SYS_CBSIZE 1024 |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 80 | |
| 81 | /* Environment */ |
| 82 | #define CONFIG_ENV_SIZE SZ_16K |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 83 | #define CONFIG_ENV_VARS_UBOOT_CONFIG |
| 84 | #define CONFIG_SYS_LOAD_ADDR 0x1000000 |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 85 | #define CONFIG_PREBOOT "usb start" |
| 86 | |
| 87 | /* Shell */ |
Alexey Brodkin | e53abba | 2017-04-18 22:09:10 +0300 | [diff] [blame] | 88 | #define CONFIG_CMDLINE_EDITING |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 89 | |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 90 | /* ATAGs support for bootm/bootz */ |
| 91 | #define CONFIG_SETUP_MEMORY_TAGS |
| 92 | #define CONFIG_CMDLINE_TAG |
| 93 | #define CONFIG_INITRD_TAG |
| 94 | |
| 95 | #include <config_distro_defaults.h> |
| 96 | |
| 97 | /* Environment */ |
| 98 | #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG |
| 99 | #define ENV_DEVICE_SETTINGS \ |
| 100 | "stdin=serial,usbkbd\0" \ |
Simon Glass | 39254d0 | 2017-04-05 16:23:44 -0600 | [diff] [blame] | 101 | "stdout=serial,vidconsole\0" \ |
| 102 | "stderr=serial,vidconsole\0" |
Stephen Warren | d8845db | 2016-04-04 20:00:41 -0600 | [diff] [blame] | 103 | |
| 104 | /* |
| 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 | * |
| 109 | * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's |
| 110 | * binary firmware loads a DT to address 0x100, so we choose this address to |
| 111 | * match it. This allows custom boot scripts to pass this DT on to Linux |
| 112 | * simply by not over-writing the data at this address. When using U-Boot, |
| 113 | * U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW |
| 114 | * and loads its own DT from disk (triggered by boot.scr or extlinux.conf). |
| 115 | * |
| 116 | * pxefile_addr_r can be pretty much anywhere that doesn't conflict with |
| 117 | * something else. Put it low in memory to avoid conflicts. |
| 118 | * |
| 119 | * kernel_addr_r must be within the first 128M of RAM in order for the |
| 120 | * kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will |
| 121 | * decompress itself to 0x8000 after the start of RAM, kernel_addr_r |
| 122 | * should not overlap that area, or the kernel will have to copy itself |
| 123 | * somewhere else before decompression. Similarly, the address of any other |
| 124 | * data passed to the kernel shouldn't overlap the start of RAM. Pushing |
| 125 | * this up to 16M allows for a sizable kernel to be decompressed below the |
| 126 | * compressed load address. |
| 127 | * |
| 128 | * scriptaddr can be pretty much anywhere that doesn't conflict with something |
| 129 | * else. Choosing 32M allows for the compressed kernel to be up to 16M. |
| 130 | * |
| 131 | * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows |
| 132 | * for any boot script to be up to 1M, which is hopefully plenty. |
| 133 | */ |
| 134 | #define ENV_MEM_LAYOUT_SETTINGS \ |
| 135 | "fdt_high=ffffffff\0" \ |
| 136 | "initrd_high=ffffffff\0" \ |
| 137 | "fdt_addr_r=0x00000100\0" \ |
| 138 | "pxefile_addr_r=0x00100000\0" \ |
| 139 | "kernel_addr_r=0x01000000\0" \ |
| 140 | "scriptaddr=0x02000000\0" \ |
| 141 | "ramdisk_addr_r=0x02100000\0" \ |
| 142 | |
| 143 | #define BOOT_TARGET_DEVICES(func) \ |
| 144 | func(MMC, mmc, 0) \ |
| 145 | func(USB, usb, 0) \ |
| 146 | func(PXE, pxe, na) \ |
| 147 | func(DHCP, dhcp, na) |
| 148 | #include <config_distro_bootcmd.h> |
| 149 | |
| 150 | #define CONFIG_EXTRA_ENV_SETTINGS \ |
| 151 | "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \ |
| 152 | ENV_DEVICE_SETTINGS \ |
| 153 | ENV_MEM_LAYOUT_SETTINGS \ |
| 154 | BOOTENV |
Alexander Stein | 50e8184 | 2015-07-24 09:22:11 +0200 | [diff] [blame] | 155 | |
Stephen Warren | 0e012c3 | 2012-08-05 16:07:22 +0000 | [diff] [blame] | 156 | |
Stephen Warren | 0e012c3 | 2012-08-05 16:07:22 +0000 | [diff] [blame] | 157 | #endif |