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
  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
  27 /* Memory layout */
  28 #define CONFIG_NR_DRAM_BANKS            1
  29 #define CONFIG_SYS_SDRAM_BASE           0x00000000
  30 #ifdef CONFIG_ARM64
  31 #define CONFIG_SYS_TEXT_BASE            0x00080000
  32 #else
  33 #define CONFIG_SYS_TEXT_BASE            0x00008000
  34 #endif
  35 #define CONFIG_SYS_UBOOT_BASE           CONFIG_SYS_TEXT_BASE
  36 /*
  37  * The board really has 256M. However, the VC (VideoCore co-processor) shares
  38  * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
  39  * smaller amount of RAM is present in order to avoid stomping on the area
  40  * the VC uses.
  41  */
  42 #define CONFIG_SYS_SDRAM_SIZE           SZ_128M
  43 #define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + \
  44                                          CONFIG_SYS_SDRAM_SIZE - \
  45                                          GENERATED_GBL_DATA_SIZE)
  46 #define CONFIG_SYS_MALLOC_LEN           SZ_4M
  47 #define CONFIG_SYS_MEMTEST_START        0x00100000
  48 #define CONFIG_SYS_MEMTEST_END          0x00200000
  49 #define CONFIG_LOADADDR                 0x00200000
  50
  51 /* Flash */
  52 #define CONFIG_SYS_NO_FLASH
  53
  54 /* Devices */
  55 /* GPIO */
  56 #define CONFIG_BCM2835_GPIO
  57 /* LCD */
  58 #define CONFIG_LCD_DT_SIMPLEFB
  59 #define LCD_BPP                         LCD_COLOR32
  60 /*
  61  * Prevent allocation of RAM for FB; the real FB address is queried
  62  * dynamically from the VideoCore co-processor, and comes from RAM
  63  * not owned by the ARM CPU.
  64  */
  65 #define CONFIG_FB_ADDR                  0
  66 #define CONFIG_VIDEO_BCM2835
  67 #define CONFIG_SYS_WHITE_ON_BLACK
  68
  69 /* SD/MMC configuration */
  70 #define CONFIG_GENERIC_MMC
  71
  72 #ifdef CONFIG_CMD_USB
  73 #define CONFIG_USB_DWC2
  74 #ifndef CONFIG_BCM2835
  75 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
  76 #else
  77 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
  78 #endif
  79 #define CONFIG_USB_HOST_ETHER
  80 #define CONFIG_USB_ETHER_SMSC95XX
  81 #define CONFIG_TFTP_TSIZE
  82 #define CONFIG_MISC_INIT_R
  83 #define CONFIG_SYS_USB_EVENT_POLL
  84 #endif
  85
  86 /* Console UART */
  87 #ifdef CONFIG_BCM2837
  88 #define CONFIG_BCM283X_MU_SERIAL
  89 #else
  90 #define CONFIG_PL01X_SERIAL
  91 #endif
  92 #define CONFIG_CONS_INDEX               0
  93 #define CONFIG_BAUDRATE                 115200
  94
  95 /* Console configuration */
  96 #define CONFIG_SYS_CBSIZE               1024
  97 #define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE +            \
  98                                          sizeof(CONFIG_SYS_PROMPT) + 16)
  99
 100 /* Environment */
 101 #define CONFIG_ENV_SIZE                 SZ_16K
 102 #define CONFIG_ENV_IS_IN_FAT
 103 #define FAT_ENV_INTERFACE               "mmc"
 104 #define FAT_ENV_DEVICE_AND_PART         "0:1"
 105 #define FAT_ENV_FILE                    "uboot.env"
 106 #define CONFIG_FAT_WRITE
 107 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 108 #define CONFIG_SYS_LOAD_ADDR            0x1000000
 109 #define CONFIG_PREBOOT                  "usb start"
 110
 111 /* Shell */
 112 #define CONFIG_SYS_MAXARGS              16
 113 #define CONFIG_COMMAND_HISTORY
 114
 115 /* Commands */
 116 #define CONFIG_PARTITION_UUIDS
 117 #define CONFIG_CMD_PART
 118
 119 /* ATAGs support for bootm/bootz */
 120 #define CONFIG_SETUP_MEMORY_TAGS
 121 #define CONFIG_CMDLINE_TAG
 122 #define CONFIG_INITRD_TAG
 123
 124 #include <config_distro_defaults.h>
 125
 126 /* Environment */
 127 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 128 #define ENV_DEVICE_SETTINGS \
 129         "stdin=serial,usbkbd\0" \
 130         "stdout=serial,lcd\0" \
 131         "stderr=serial,lcd\0"
 132
 133 /*
 134  * Memory layout for where various images get loaded by boot scripts:
 135  *
 136  * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
 137  *
 138  * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
 139  *   binary firmware loads a DT to address 0x100, so we choose this address to
 140  *   match it. This allows custom boot scripts to pass this DT on to Linux
 141  *   simply by not over-writing the data at this address. When using U-Boot,
 142  *   U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
 143  *   and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
 144  *
 145  * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
 146  *   something else. Put it low in memory to avoid conflicts.
 147  *
 148  * kernel_addr_r must be within the first 128M of RAM in order for the
 149  *   kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
 150  *   decompress itself to 0x8000 after the start of RAM, kernel_addr_r
 151  *   should not overlap that area, or the kernel will have to copy itself
 152  *   somewhere else before decompression. Similarly, the address of any other
 153  *   data passed to the kernel shouldn't overlap the start of RAM. Pushing
 154  *   this up to 16M allows for a sizable kernel to be decompressed below the
 155  *   compressed load address.
 156  *
 157  * scriptaddr can be pretty much anywhere that doesn't conflict with something
 158  *   else. Choosing 32M allows for the compressed kernel to be up to 16M.
 159  *
 160  * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
 161  *   for any boot script to be up to 1M, which is hopefully plenty.
 162  */
 163 #define ENV_MEM_LAYOUT_SETTINGS \
 164         "fdt_high=ffffffff\0" \
 165         "initrd_high=ffffffff\0" \
 166         "fdt_addr_r=0x00000100\0" \
 167         "pxefile_addr_r=0x00100000\0" \
 168         "kernel_addr_r=0x01000000\0" \
 169         "scriptaddr=0x02000000\0" \
 170         "ramdisk_addr_r=0x02100000\0" \
 171
 172 #define BOOT_TARGET_DEVICES(func) \
 173         func(MMC, mmc, 0) \
 174         func(USB, usb, 0) \
 175         func(PXE, pxe, na) \
 176         func(DHCP, dhcp, na)
 177 #include <config_distro_bootcmd.h>
 178
 179 #define CONFIG_EXTRA_ENV_SETTINGS \
 180         "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
 181         ENV_DEVICE_SETTINGS \
 182         ENV_MEM_LAYOUT_SETTINGS \
 183         BOOTENV
 184
 185
 186 #endif