include/configs/rpi-common.h

   1 /*
   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>
  11 #include <asm/arch/timer.h>
  12
  13 /* Architecture, CPU, etc.*/
  14 #define CONFIG_BCM2835
  15 #define CONFIG_ARCH_CPU_INIT
  16
  17 #define CONFIG_SYS_TIMER_RATE           1000000
  18 #define CONFIG_SYS_TIMER_COUNTER        \
  19         (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
  20
  21 /*
  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 #define CONFIG_CONSOLE_SCROLL_LINES     10
  72
  73 /* SD/MMC configuration */
  74 #define CONFIG_GENERIC_MMC
  75 #define CONFIG_MMC
  76 #define CONFIG_SDHCI
  77 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
  78 #define CONFIG_BCM2835_SDHCI
  79
  80 #define CONFIG_CMD_USB
  81 #ifdef CONFIG_CMD_USB
  82 #define CONFIG_USB_DWC2
  83 #ifdef CONFIG_BCM2836
  84 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
  85 #else
  86 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
  87 #endif
  88 #define CONFIG_USB_STORAGE
  89 #define CONFIG_USB_HOST_ETHER
  90 #define CONFIG_USB_ETHER_SMSC95XX
  91 #define CONFIG_MISC_INIT_R
  92 #define CONFIG_USB_KEYBOARD
  93 #define CONFIG_SYS_USB_EVENT_POLL
  94 #define CONFIG_SYS_STDIO_DEREGISTER
  95 #endif
  96
  97 /* Console UART */
  98 #define CONFIG_PL01X_SERIAL
  99 #define CONFIG_CONS_INDEX               0
 100 #define CONFIG_BAUDRATE                 115200
 101
 102 /* Console configuration */
 103 #define CONFIG_SYS_CBSIZE               1024
 104 #define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE +            \
 105                                          sizeof(CONFIG_SYS_PROMPT) + 16)
 106
 107 /* Environment */
 108 #define CONFIG_ENV_SIZE                 SZ_16K
 109 #define CONFIG_ENV_IS_IN_FAT
 110 #define FAT_ENV_INTERFACE               "mmc"
 111 #define FAT_ENV_DEVICE_AND_PART         "0:1"
 112 #define FAT_ENV_FILE                    "uboot.env"
 113 #define CONFIG_FAT_WRITE
 114 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 115 #define CONFIG_SYS_LOAD_ADDR            0x1000000
 116 #define CONFIG_CONSOLE_MUX
 117 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
 118 #define CONFIG_PREBOOT                  "usb start"
 119
 120 /* Shell */
 121 #define CONFIG_SYS_MAXARGS              8
 122 #define CONFIG_COMMAND_HISTORY
 123
 124 /* Commands */
 125 #define CONFIG_CMD_MMC
 126 #define CONFIG_PARTITION_UUIDS
 127 #define CONFIG_CMD_PART
 128
 129 /* Device tree support */
 130 #define CONFIG_OF_BOARD_SETUP
 131 /* ATAGs support for bootm/bootz */
 132 #define CONFIG_SETUP_MEMORY_TAGS
 133 #define CONFIG_CMDLINE_TAG
 134 #define CONFIG_INITRD_TAG
 135
 136 #include <config_distro_defaults.h>
 137
 138 /* Environment */
 139 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 140 #define ENV_DEVICE_SETTINGS \
 141         "stdin=serial,usbkbd\0" \
 142         "stdout=serial,lcd\0" \
 143         "stderr=serial,lcd\0"
 144
 145 /*
 146  * Memory layout for where various images get loaded by boot scripts:
 147  *
 148  * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
 149  *
 150  * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
 151  *   binary firmware loads a DT to address 0x100, so we choose this address to
 152  *   match it. This allows custom boot scripts to pass this DT on to Linux
 153  *   simply by not over-writing the data at this address. When using U-Boot,
 154  *   U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
 155  *   and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
 156  *
 157  * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
 158  *   something else. Put it low in memory to avoid conflicts.
 159  *
 160  * kernel_addr_r must be within the first 128M of RAM in order for the
 161  *   kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
 162  *   decompress itself to 0x8000 after the start of RAM, kernel_addr_r
 163  *   should not overlap that area, or the kernel will have to copy itself
 164  *   somewhere else before decompression. Similarly, the address of any other
 165  *   data passed to the kernel shouldn't overlap the start of RAM. Pushing
 166  *   this up to 16M allows for a sizable kernel to be decompressed below the
 167  *   compressed load address.
 168  *
 169  * scriptaddr can be pretty much anywhere that doesn't conflict with something
 170  *   else. Choosing 32M allows for the compressed kernel to be up to 16M.
 171  *
 172  * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
 173  *   for any boot script to be up to 1M, which is hopefully plenty.
 174  */
 175 #define ENV_MEM_LAYOUT_SETTINGS \
 176         "fdt_high=ffffffff\0" \
 177         "initrd_high=ffffffff\0" \
 178         "fdt_addr_r=0x00000100\0" \
 179         "pxefile_addr_r=0x00100000\0" \
 180         "kernel_addr_r=0x01000000\0" \
 181         "scriptaddr=0x02000000\0" \
 182         "ramdisk_addr_r=0x02100000\0" \
 183
 184 #define BOOT_TARGET_DEVICES(func) \
 185         func(MMC, mmc, 0) \
 186         func(USB, usb, 0) \
 187         func(PXE, pxe, na) \
 188         func(DHCP, dhcp, na)
 189 #include <config_distro_bootcmd.h>
 190
 191 #define CONFIG_EXTRA_ENV_SETTINGS \
 192         ENV_DEVICE_SETTINGS \
 193         ENV_MEM_LAYOUT_SETTINGS \
 194         BOOTENV
 195
 196 #define CONFIG_BOOTDELAY 2
 197
 198 #endif