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 #ifdef CONFIG_BCM2835
  18 #define CONFIG_SYS_CACHELINE_SIZE               32
  19 #else
  20 #define CONFIG_SYS_CACHELINE_SIZE               64
  21 #endif
  22
  23 /* Architecture, CPU, etc.*/
  24 #define CONFIG_ARCH_CPU_INIT
  25
  26 /* Use SoC timer for AArch32, but architected timer for AArch64 */
  27 #ifndef CONFIG_ARM64
  28 #define CONFIG_SYS_TIMER_RATE           1000000
  29 #define CONFIG_SYS_TIMER_COUNTER        \
  30         (&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
  31 #endif
  32
  33 /*
  34  * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
  35  * so 2708 has historically been used rather than a dedicated 2835 ID.
  36  *
  37  * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
  38  * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
  39  * rather than obtaining a valid ID:-/
  40  *
  41  * For the bcm2837, hopefully a machine type is not needed, since everything
  42  * is DT.
  43  */
  44 #ifdef CONFIG_BCM2835
  45 #define CONFIG_MACH_TYPE                MACH_TYPE_BCM2708
  46 #endif
  47
  48 /* Memory layout */
  49 #define CONFIG_NR_DRAM_BANKS            1
  50 #define CONFIG_SYS_SDRAM_BASE           0x00000000
  51 #define CONFIG_SYS_TEXT_BASE            0x00008000
  52 #define CONFIG_SYS_UBOOT_BASE           CONFIG_SYS_TEXT_BASE
  53 /*
  54  * The board really has 256M. However, the VC (VideoCore co-processor) shares
  55  * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
  56  * smaller amount of RAM is present in order to avoid stomping on the area
  57  * the VC uses.
  58  */
  59 #define CONFIG_SYS_SDRAM_SIZE           SZ_128M
  60 #define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_SDRAM_BASE + \
  61                                          CONFIG_SYS_SDRAM_SIZE - \
  62                                          GENERATED_GBL_DATA_SIZE)
  63 #define CONFIG_SYS_MALLOC_LEN           SZ_4M
  64 #define CONFIG_SYS_MEMTEST_START        0x00100000
  65 #define CONFIG_SYS_MEMTEST_END          0x00200000
  66 #define CONFIG_LOADADDR                 0x00200000
  67
  68 /* Flash */
  69 #define CONFIG_SYS_NO_FLASH
  70
  71 /* Devices */
  72 /* GPIO */
  73 #define CONFIG_BCM2835_GPIO
  74 /* LCD */
  75 #define CONFIG_LCD
  76 #define CONFIG_LCD_DT_SIMPLEFB
  77 #define LCD_BPP                         LCD_COLOR16
  78 /*
  79  * Prevent allocation of RAM for FB; the real FB address is queried
  80  * dynamically from the VideoCore co-processor, and comes from RAM
  81  * not owned by the ARM CPU.
  82  */
  83 #define CONFIG_FB_ADDR                  0
  84 #define CONFIG_VIDEO_BCM2835
  85 #define CONFIG_SYS_WHITE_ON_BLACK
  86 #define CONFIG_CONSOLE_SCROLL_LINES     10
  87
  88 /* SD/MMC configuration */
  89 #define CONFIG_GENERIC_MMC
  90 #define CONFIG_MMC
  91 #define CONFIG_SDHCI
  92 #define CONFIG_MMC_SDHCI_IO_ACCESSORS
  93 #define CONFIG_BCM2835_SDHCI
  94
  95 #define CONFIG_CMD_USB
  96 #ifdef CONFIG_CMD_USB
  97 #define CONFIG_USB_DWC2
  98 #ifndef CONFIG_BCM2835
  99 #define CONFIG_USB_DWC2_REG_ADDR 0x3f980000
 100 #else
 101 #define CONFIG_USB_DWC2_REG_ADDR 0x20980000
 102 #endif
 103 #define CONFIG_USB_STORAGE
 104 #define CONFIG_USB_HOST_ETHER
 105 #define CONFIG_USB_ETHER_SMSC95XX
 106 #define CONFIG_MISC_INIT_R
 107 #define CONFIG_USB_KEYBOARD
 108 #define CONFIG_SYS_USB_EVENT_POLL
 109 #define CONFIG_SYS_STDIO_DEREGISTER
 110 #endif
 111
 112 /* Console UART */
 113 #ifdef CONFIG_BCM2837
 114 #define CONFIG_BCM283X_MU_SERIAL
 115 #else
 116 #define CONFIG_PL01X_SERIAL
 117 #endif
 118 #define CONFIG_CONS_INDEX               0
 119 #define CONFIG_BAUDRATE                 115200
 120
 121 /* Console configuration */
 122 #define CONFIG_SYS_CBSIZE               1024
 123 #define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE +            \
 124                                          sizeof(CONFIG_SYS_PROMPT) + 16)
 125
 126 /* Environment */
 127 #define CONFIG_ENV_SIZE                 SZ_16K
 128 #define CONFIG_ENV_IS_IN_FAT
 129 #define FAT_ENV_INTERFACE               "mmc"
 130 #define FAT_ENV_DEVICE_AND_PART         "0:1"
 131 #define FAT_ENV_FILE                    "uboot.env"
 132 #define CONFIG_FAT_WRITE
 133 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 134 #define CONFIG_SYS_LOAD_ADDR            0x1000000
 135 #define CONFIG_CONSOLE_MUX
 136 #define CONFIG_SYS_CONSOLE_IS_IN_ENV
 137 #define CONFIG_PREBOOT                  "usb start"
 138
 139 /* Shell */
 140 #define CONFIG_SYS_MAXARGS              16
 141 #define CONFIG_COMMAND_HISTORY
 142
 143 /* Commands */
 144 #define CONFIG_CMD_MMC
 145 #define CONFIG_PARTITION_UUIDS
 146 #define CONFIG_CMD_PART
 147
 148 /* ATAGs support for bootm/bootz */
 149 #define CONFIG_SETUP_MEMORY_TAGS
 150 #define CONFIG_CMDLINE_TAG
 151 #define CONFIG_INITRD_TAG
 152
 153 #include <config_distro_defaults.h>
 154
 155 /* Environment */
 156 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 157 #define ENV_DEVICE_SETTINGS \
 158         "stdin=serial,usbkbd\0" \
 159         "stdout=serial,lcd\0" \
 160         "stderr=serial,lcd\0"
 161
 162 /*
 163  * Memory layout for where various images get loaded by boot scripts:
 164  *
 165  * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
 166  *
 167  * fdt_addr_r simply shouldn't overlap anything else. However, the RPi's
 168  *   binary firmware loads a DT to address 0x100, so we choose this address to
 169  *   match it. This allows custom boot scripts to pass this DT on to Linux
 170  *   simply by not over-writing the data at this address. When using U-Boot,
 171  *   U-Boot (and scripts it executes) typicaly ignore the DT loaded by the FW
 172  *   and loads its own DT from disk (triggered by boot.scr or extlinux.conf).
 173  *
 174  * pxefile_addr_r can be pretty much anywhere that doesn't conflict with
 175  *   something else. Put it low in memory to avoid conflicts.
 176  *
 177  * kernel_addr_r must be within the first 128M of RAM in order for the
 178  *   kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
 179  *   decompress itself to 0x8000 after the start of RAM, kernel_addr_r
 180  *   should not overlap that area, or the kernel will have to copy itself
 181  *   somewhere else before decompression. Similarly, the address of any other
 182  *   data passed to the kernel shouldn't overlap the start of RAM. Pushing
 183  *   this up to 16M allows for a sizable kernel to be decompressed below the
 184  *   compressed load address.
 185  *
 186  * scriptaddr can be pretty much anywhere that doesn't conflict with something
 187  *   else. Choosing 32M allows for the compressed kernel to be up to 16M.
 188  *
 189  * ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
 190  *   for any boot script to be up to 1M, which is hopefully plenty.
 191  */
 192 #define ENV_MEM_LAYOUT_SETTINGS \
 193         "fdt_high=ffffffff\0" \
 194         "initrd_high=ffffffff\0" \
 195         "fdt_addr_r=0x00000100\0" \
 196         "pxefile_addr_r=0x00100000\0" \
 197         "kernel_addr_r=0x01000000\0" \
 198         "scriptaddr=0x02000000\0" \
 199         "ramdisk_addr_r=0x02100000\0" \
 200
 201 #define BOOT_TARGET_DEVICES(func) \
 202         func(MMC, mmc, 0) \
 203         func(USB, usb, 0) \
 204         func(PXE, pxe, na) \
 205         func(DHCP, dhcp, na)
 206 #include <config_distro_bootcmd.h>
 207
 208 #define CONFIG_EXTRA_ENV_SETTINGS \
 209         "dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
 210         ENV_DEVICE_SETTINGS \
 211         ENV_MEM_LAYOUT_SETTINGS \
 212         BOOTENV
 213
 214 #define CONFIG_BOOTDELAY 2
 215
 216 #endif