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 /*
  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
  42 /* Memory layout */
  43 #define CONFIG_NR_DRAM_BANKS            1
  44 #define CONFIG_SYS_SDRAM_BASE           0x00000000
  45 #ifdef CONFIG_ARM64
  46 #define CONFIG_SYS_TEXT_BASE            0x00080000
  47 #else
  48 #define CONFIG_SYS_TEXT_BASE            0x00008000
  49 #endif
  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
  66 /* Flash */
  67 #define CONFIG_SYS_NO_FLASH
  68
  69 /* Devices */
  70 /* GPIO */
  71 #define CONFIG_BCM2835_GPIO
  72 /* LCD */
  73 #define CONFIG_LCD_DT_SIMPLEFB
  74 #define LCD_BPP                         LCD_COLOR32
  75 /*
  76  * Prevent allocation of RAM for FB; the real FB address is queried
  77  * dynamically from the VideoCore co-processor, and comes from RAM
  78  * not owned by the ARM CPU.
  79  */
  80 #define CONFIG_FB_ADDR                  0
  81 #define CONFIG_VIDEO_BCM2835
  82 #define CONFIG_SYS_WHITE_ON_BLACK
  83
  84 #ifdef CONFIG_CMD_USB
  85 #define CONFIG_USB_DWC2
  86 #ifndef CONFIG_BCM2835
  87 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
  88 #else
  89 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
  90 #endif
  91 #define CONFIG_USB_HOST_ETHER
  92 #define CONFIG_USB_ETHER_SMSC95XX
  93 #define CONFIG_TFTP_TSIZE
  94 #define CONFIG_MISC_INIT_R
  95 #define CONFIG_SYS_USB_EVENT_POLL
  96 #endif
  97
  98 /* Console UART */
  99 #ifdef CONFIG_BCM2837
 100 #define CONFIG_BCM283X_MU_SERIAL
 101 #else
 102 #define CONFIG_PL01X_SERIAL
 103 #endif
 104 #define CONFIG_CONS_INDEX               0
 105 #define CONFIG_BAUDRATE                 115200
 106
 107 /* Console configuration */
 108 #define CONFIG_SYS_CBSIZE               1024
 109 #define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE +            \
 110                                          sizeof(CONFIG_SYS_PROMPT) + 16)
 111
 112 /* Environment */
 113 #define CONFIG_ENV_SIZE                 SZ_16K
 114 #define CONFIG_ENV_IS_IN_FAT
 115 #define FAT_ENV_INTERFACE               "mmc"
 116 #define FAT_ENV_DEVICE_AND_PART         "0:1"
 117 #define FAT_ENV_FILE                    "uboot.env"
 118 #define CONFIG_FAT_WRITE
 119 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 120 #define CONFIG_SYS_LOAD_ADDR            0x1000000
 121 #define CONFIG_PREBOOT                  "usb start"
 122
 123 /* Shell */
 124 #define CONFIG_SYS_MAXARGS              16
 125 #define CONFIG_COMMAND_HISTORY
 126
 127 /* ATAGs support for bootm/bootz */
 128 #define CONFIG_SETUP_MEMORY_TAGS
 129 #define CONFIG_CMDLINE_TAG
 130 #define CONFIG_INITRD_TAG
 131
 132 #include <config_distro_defaults.h>
 133
 134 /* Environment */
 135 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 136 #define ENV_DEVICE_SETTINGS \
 137         "stdin=serial,usbkbd\0" \
 138         "stdout=serial,lcd\0" \
 139         "stderr=serial,lcd\0"
 140
 141 /*
 142  * Memory layout for where various images get loaded by boot scripts:
 143  *
 144  * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
 145  *
 146  * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
 147  *   binary firmware loads a DT to address 0x100, so we choose this address to
 148  *   match it. This allows custom boot scripts to pass this DT on to Linux
 149  *   simply by not over-writing the data at this address. When using U-Boot,
 150  *   U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
 151  *   and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
 152  *
 153  * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
 154  *   something else. Put it low in memory to avoid conflicts.
 155  *
 156  * kernel_addr_r must be within the first 128M of RAM in order for the
 157  *   kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
 158  *   decompress itself to 0x8000 after the start of RAM, kernel_addr_r
 159  *   should not overlap that area, or the kernel will have to copy itself
 160  *   somewhere else before decompression. Similarly, the address of any other
 161  *   data passed to the kernel shouldn't overlap the start of RAM. Pushing
 162  *   this up to 16M allows for a sizable kernel to be decompressed below the
 163  *   compressed load address.
 164  *
 165  * scriptaddr can be pretty much anywhere that doesn't conflict with something
 166  *   else. Choosing 32M allows for the compressed kernel to be up to 16M.
 167  *
 168  * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
 169  *   for any boot script to be up to 1M, which is hopefully plenty.
 170  */
 171 #define ENV_MEM_LAYOUT_SETTINGS \
 172         "fdt_high=ffffffff\0" \
 173         "initrd_high=ffffffff\0" \
 174         "fdt_addr_r=0x00000100\0" \
 175         "pxefile_addr_r=0x00100000\0" \
 176         "kernel_addr_r=0x01000000\0" \
 177         "scriptaddr=0x02000000\0" \
 178         "ramdisk_addr_r=0x02100000\0" \
 179
 180 #define BOOT_TARGET_DEVICES(func) \
 181         func(MMC, mmc, 0) \
 182         func(USB, usb, 0) \
 183         func(PXE, pxe, na) \
 184         func(DHCP, dhcp, na)
 185 #include <config_distro_bootcmd.h>
 186
 187 #define CONFIG_EXTRA_ENV_SETTINGS \
 188         "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
 189         ENV_DEVICE_SETTINGS \
 190         ENV_MEM_LAYOUT_SETTINGS \
 191         BOOTENV
 192
 193
 194 #endif