LXR uboot/include/configs/rpi.h

   1/*
   2 * (C) Copyright 2012-2016 Stephen Warren
   3 *
   4 * SPDX-License-Identifier:     GPL-2.0
   5 */
   6
   7#ifndef __CONFIG_H
   8#define __CONFIG_H
   9
  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
  17/* Architecture, CPU, etc.*/
  18#define CONFIG_ARCH_CPU_INIT
  19#define CONFIG_BOARD_EARLY_INIT_F
  20
  21/* Use SoC timer for AArch32, but architected timer for AArch64 */
  22#ifndef CONFIG_ARM64
  23#define CONFIG_SYS_TIMER_RATE           1000000
  24#define CONFIG_SYS_TIMER_COUNTER        \
  25        (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
  26#endif
  27
  28/*
  29 * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
  30 * so 2708 has historically been used rather than a dedicated 2835 ID.
  31 *
  32 * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
  33 * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
  34 * rather than obtaining a valid ID:-/
  35 *
  36 * For the bcm2837, hopefully a machine type is not needed, since everything
  37 * is DT.
  38 */
  39#ifdef CONFIG_BCM2835
  40#define CONFIG_MACH_TYPE                MACH_TYPE_BCM2708
  41#endif
  42
  43/* Memory layout */
  44#define CONFIG_NR_DRAM_BANKS            1
  45#define CONFIG_SYS_SDRAM_BASE           0x00000000
  46#ifdef CONFIG_ARM64
  47#define CONFIG_SYS_TEXT_BASE            0x00080000
  48#else
  49#define CONFIG_SYS_TEXT_BASE            0x00008000
  50#endif
  51#define CONFIG_SYS_UBOOT_BASE           CONFIG_SYS_TEXT_BASE
  52/*
  53 * The board really has 256M. However, the VC (VideoCore co-processor) shares
  54 * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
  55 * smaller amount of RAM is present in order to avoid stomping on the area
  56 * the VC uses.
  57 */
  58#define CONFIG_SYS_SDRAM_SIZE           SZ_128M
  59#define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + \
  60                                         CONFIG_SYS_SDRAM_SIZE - \
  61                                         GENERATED_GBL_DATA_SIZE)
  62#define CONFIG_SYS_MALLOC_LEN           SZ_4M
  63#define CONFIG_SYS_MEMTEST_START        0x00100000
  64#define CONFIG_SYS_MEMTEST_END          0x00200000
  65#define CONFIG_LOADADDR                 0x00200000
  66
  67/* Flash */
  68#define CONFIG_SYS_NO_FLASH
  69
  70/* Devices */
  71/* GPIO */
  72#define CONFIG_BCM2835_GPIO
  73/* LCD */
  74#define CONFIG_LCD
  75#define CONFIG_LCD_DT_SIMPLEFB
  76#define LCD_BPP                         LCD_COLOR16
  77/*
  78 * Prevent allocation of RAM for FB; the real FB address is queried
  79 * dynamically from the VideoCore co-processor, and comes from RAM
  80 * not owned by the ARM CPU.
  81 */
  82#define CONFIG_FB_ADDR                  0
  83#define CONFIG_VIDEO_BCM2835
  84#define CONFIG_SYS_WHITE_ON_BLACK
  85#define CONFIG_CONSOLE_SCROLL_LINES     10
  86
  87/* SD/MMC configuration */
  88#define CONFIG_GENERIC_MMC
  89#define CONFIG_MMC
  90#define CONFIG_SDHCI
  91#define CONFIG_MMC_SDHCI_IO_ACCESSORS
  92#define CONFIG_BCM2835_SDHCI
  93
  94#ifdef CONFIG_CMD_USB
  95#define CONFIG_USB_DWC2
  96#ifndef CONFIG_BCM2835
  97#define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
  98#else
  99#define CONFIG_USB_DWC2_REG_ADDR 0x20980000
 100#endif
 101#define CONFIG_USB_HOST_ETHER
 102#define CONFIG_USB_ETHER_SMSC95XX
 103#define CONFIG_TFTP_TSIZE
 104#define CONFIG_MISC_INIT_R
 105#define CONFIG_USB_KEYBOARD
 106#define CONFIG_SYS_USB_EVENT_POLL
 107#define CONFIG_SYS_STDIO_DEREGISTER
 108#endif
 109
 110/* Console UART */
 111#ifdef CONFIG_BCM2837
 112#define CONFIG_BCM283X_MU_SERIAL
 113#else
 114#define CONFIG_PL01X_SERIAL
 115#endif
 116#define CONFIG_CONS_INDEX               0
 117#define CONFIG_BAUDRATE                 115200
 118
 119/* Console configuration */
 120#define CONFIG_SYS_CBSIZE               1024
 121#define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE +            \
 122                                         sizeof(CONFIG_SYS_PROMPT) + 16)
 123
 124/* Environment */
 125#define CONFIG_ENV_SIZE                 SZ_16K
 126#define CONFIG_ENV_IS_IN_FAT
 127#define FAT_ENV_INTERFACE               "mmc"
 128#define FAT_ENV_DEVICE_AND_PART         "0:1"
 129#define FAT_ENV_FILE                    "uboot.env"
 130#define CONFIG_FAT_WRITE
 131#define CONFIG_ENV_VARS_UBOOT_CONFIG
 132#define CONFIG_SYS_LOAD_ADDR            0x1000000
 133#define CONFIG_CONSOLE_MUX
 134#define CONFIG_SYS_CONSOLE_IS_IN_ENV
 135#define CONFIG_PREBOOT                  "usb start"
 136
 137/* Shell */
 138#define CONFIG_SYS_MAXARGS              16
 139#define CONFIG_COMMAND_HISTORY
 140
 141/* Commands */
 142#define CONFIG_PARTITION_UUIDS
 143#define CONFIG_CMD_PART
 144
 145/* ATAGs support for bootm/bootz */
 146#define CONFIG_SETUP_MEMORY_TAGS
 147#define CONFIG_CMDLINE_TAG
 148#define CONFIG_INITRD_TAG
 149
 150#include <config_distro_defaults.h>
 151
 152/* Environment */
 153#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 154#define ENV_DEVICE_SETTINGS \
 155        "stdin=serial,usbkbd\0" \
 156        "stdout=serial,lcd\0" \
 157        "stderr=serial,lcd\0"
 158
 159/*
 160 * Memory layout for where various images get loaded by boot scripts:
 161 *
 162 * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
 163 *
 164 * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
 165 *   binary firmware loads a DT to address 0x100, so we choose this address to
 166 *   match it. This allows custom boot scripts to pass this DT on to Linux
 167 *   simply by not over-writing the data at this address. When using U-Boot,
 168 *   U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
 169 *   and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
 170 *
 171 * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
 172 *   something else. Put it low in memory to avoid conflicts.
 173 *
 174 * kernel_addr_r must be within the first 128M of RAM in order for the
 175 *   kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
 176 *   decompress itself to 0x8000 after the start of RAM, kernel_addr_r
 177 *   should not overlap that area, or the kernel will have to copy itself
 178 *   somewhere else before decompression. Similarly, the address of any other
 179 *   data passed to the kernel shouldn't overlap the start of RAM. Pushing
 180 *   this up to 16M allows for a sizable kernel to be decompressed below the
 181 *   compressed load address.
 182 *
 183 * scriptaddr can be pretty much anywhere that doesn't conflict with something
 184 *   else. Choosing 32M allows for the compressed kernel to be up to 16M.
 185 *
 186 * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
 187 *   for any boot script to be up to 1M, which is hopefully plenty.
 188 */
 189#define ENV_MEM_LAYOUT_SETTINGS \
 190        "fdt_high=ffffffff\0" \
 191        "initrd_high=ffffffff\0" \
 192        "fdt_addr_r=0x00000100\0" \
 193        "pxefile_addr_r=0x00100000\0" \
 194        "kernel_addr_r=0x01000000\0" \
 195        "scriptaddr=0x02000000\0" \
 196        "ramdisk_addr_r=0x02100000\0" \
 197
 198#define BOOT_TARGET_DEVICES(func) \
 199        func(MMC, mmc, 0) \
 200        func(USB, usb, 0) \
 201        func(PXE, pxe, na) \
 202        func(DHCP, dhcp, na)
 203#include <config_distro_bootcmd.h>
 204
 205#define CONFIG_EXTRA_ENV_SETTINGS \
 206        "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
 207        ENV_DEVICE_SETTINGS \
 208        ENV_MEM_LAYOUT_SETTINGS \
 209        BOOTENV
 210
 211
 212#endif
 213