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_DT_SIMPLEFB
  75 #define LCD_BPP                         LCD_COLOR16
  76 /*
  77  * Prevent allocation of RAM for FB; the real FB address is queried
  78  * dynamically from the VideoCore co-processor, and comes from RAM
  79  * not owned by the ARM CPU.
  80  */
  81 #define CONFIG_FB_ADDR                  0
  82 #define CONFIG_VIDEO_BCM2835
  83 #define CONFIG_SYS_WHITE_ON_BLACK
  84
  85 /* SD/MMC configuration */
  86 #define CONFIG_GENERIC_MMC
  87 #define CONFIG_MMC
  88 #define CONFIG_SDHCI
  89 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
  90 #define CONFIG_BCM2835_SDHCI
  91
  92 #ifdef CONFIG_CMD_USB
  93 #define CONFIG_USB_DWC2
  94 #ifndef CONFIG_BCM2835
  95 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
  96 #else
  97 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
  98 #endif
  99 #define CONFIG_USB_HOST_ETHER
 100 #define CONFIG_USB_ETHER_SMSC95XX
 101 #define CONFIG_TFTP_TSIZE
 102 #define CONFIG_MISC_INIT_R
 103 #define CONFIG_SYS_USB_EVENT_POLL
 104 #define CONFIG_SYS_STDIO_DEREGISTER
 105 #endif
 106
 107 /* Console UART */
 108 #ifdef CONFIG_BCM2837
 109 #define CONFIG_BCM283X_MU_SERIAL
 110 #else
 111 #define CONFIG_PL01X_SERIAL
 112 #endif
 113 #define CONFIG_CONS_INDEX               0
 114 #define CONFIG_BAUDRATE                 115200
 115
 116 /* Console configuration */
 117 #define CONFIG_SYS_CBSIZE               1024
 118 #define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE +            \
 119                                          sizeof(CONFIG_SYS_PROMPT) + 16)
 120
 121 /* Environment */
 122 #define CONFIG_ENV_SIZE                 SZ_16K
 123 #define CONFIG_ENV_IS_IN_FAT
 124 #define FAT_ENV_INTERFACE               "mmc"
 125 #define FAT_ENV_DEVICE_AND_PART         "0:1"
 126 #define FAT_ENV_FILE                    "uboot.env"
 127 #define CONFIG_FAT_WRITE
 128 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 129 #define CONFIG_SYS_LOAD_ADDR            0x1000000
 130 #define CONFIG_PREBOOT                  "usb start"
 131
 132 /* Shell */
 133 #define CONFIG_SYS_MAXARGS              16
 134 #define CONFIG_COMMAND_HISTORY
 135
 136 /* Commands */
 137 #define CONFIG_PARTITION_UUIDS
 138 #define CONFIG_CMD_PART
 139
 140 /* ATAGs support for bootm/bootz */
 141 #define CONFIG_SETUP_MEMORY_TAGS
 142 #define CONFIG_CMDLINE_TAG
 143 #define CONFIG_INITRD_TAG
 144
 145 #include <config_distro_defaults.h>
 146
 147 /* Environment */
 148 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 149 #define ENV_DEVICE_SETTINGS \
 150         "stdin=serial,usbkbd\0" \
 151         "stdout=serial,lcd\0" \
 152         "stderr=serial,lcd\0"
 153
 154 /*
 155  * Memory layout for where various images get loaded by boot scripts:
 156  *
 157  * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
 158  *
 159  * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
 160  *   binary firmware loads a DT to address 0x100, so we choose this address to
 161  *   match it. This allows custom boot scripts to pass this DT on to Linux
 162  *   simply by not over-writing the data at this address. When using U-Boot,
 163  *   U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
 164  *   and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
 165  *
 166  * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
 167  *   something else. Put it low in memory to avoid conflicts.
 168  *
 169  * kernel_addr_r must be within the first 128M of RAM in order for the
 170  *   kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
 171  *   decompress itself to 0x8000 after the start of RAM, kernel_addr_r
 172  *   should not overlap that area, or the kernel will have to copy itself
 173  *   somewhere else before decompression. Similarly, the address of any other
 174  *   data passed to the kernel shouldn't overlap the start of RAM. Pushing
 175  *   this up to 16M allows for a sizable kernel to be decompressed below the
 176  *   compressed load address.
 177  *
 178  * scriptaddr can be pretty much anywhere that doesn't conflict with something
 179  *   else. Choosing 32M allows for the compressed kernel to be up to 16M.
 180  *
 181  * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
 182  *   for any boot script to be up to 1M, which is hopefully plenty.
 183  */
 184 #define ENV_MEM_LAYOUT_SETTINGS \
 185         "fdt_high=ffffffff\0" \
 186         "initrd_high=ffffffff\0" \
 187         "fdt_addr_r=0x00000100\0" \
 188         "pxefile_addr_r=0x00100000\0" \
 189         "kernel_addr_r=0x01000000\0" \
 190         "scriptaddr=0x02000000\0" \
 191         "ramdisk_addr_r=0x02100000\0" \
 192
 193 #define BOOT_TARGET_DEVICES(func) \
 194         func(MMC, mmc, 0) \
 195         func(USB, usb, 0) \
 196         func(PXE, pxe, na) \
 197         func(DHCP, dhcp, na)
 198 #include <config_distro_bootcmd.h>
 199
 200 #define CONFIG_EXTRA_ENV_SETTINGS \
 201         "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
 202         ENV_DEVICE_SETTINGS \
 203         ENV_MEM_LAYOUT_SETTINGS \
 204         BOOTENV
 205
 206
 207 #endif