target/linux/brcm63xx/patches-3.14/367-MIPS-BCM63XX-add-support-for-loading-DTB.patch

   1 From db896341299cbcb703821228574ba9b79b6a3565 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jogo@openwrt.org>
   3 Date: Tue, 24 Jun 2014 10:57:51 +0200
   4 Subject: [PATCH 45/48] MIPS: BCM63XX: add support for loading DTB
   5
   6 ---
   7  arch/mips/bcm63xx/boards/Kconfig        |  4 ++++
   8  arch/mips/bcm63xx/boards/board_common.c | 34 +++++++++++++++++++++++++++++++++
   9  2 files changed, 38 insertions(+)
  10
  11 --- a/arch/mips/bcm63xx/boards/Kconfig
  12 +++ b/arch/mips/bcm63xx/boards/Kconfig
  13 @@ -1,6 +1,10 @@
  14  menu "Board support"
  15         depends on BCM63XX
  16
  17 +config BOARD_BCM63XX_DT
  18 +       bool "Device Tree boards (experimential)"
  19 +       select USE_OF
  20 +
  21  config BOARD_BCM963XX
  22         bool "Generic Broadcom 963xx boards"
  23         select SSB
  24 --- a/arch/mips/bcm63xx/boards/board_common.c
  25 +++ b/arch/mips/bcm63xx/boards/board_common.c
  26 @@ -10,6 +10,8 @@
  27  #include <linux/init.h>
  28  #include <linux/kernel.h>
  29  #include <linux/string.h>
  30 +#include <linux/of_fdt.h>
  31 +#include <linux/of_platform.h>
  32  #include <linux/platform_device.h>
  33  #include <linux/ssb/ssb.h>
  34  #include <linux/gpio_keys.h>
  35 @@ -17,6 +19,7 @@
  36  #include <asm/addrspace.h>
  37  #include <asm/bootinfo.h>
  38  #include <asm/fw/cfe/cfe_api.h>
  39 +#include <asm/prom.h>
  40  #include <bcm63xx_board.h>
  41  #include <bcm63xx_cpu.h>
  42  #include <bcm63xx_dev_uart.h>
  43 @@ -129,8 +132,23 @@ void __init board_setup(void)
  44         /* make sure we're running on expected cpu */
  45         if (bcm63xx_get_cpu_id() != board.expected_cpu_id)
  46                 panic("unexpected CPU for bcm963xx board");
  47 +
  48 +#if CONFIG_OF
  49 +       if (initial_boot_params)
  50 +               __dt_setup_arch(initial_boot_params);
  51 +#endif
  52  }
  53
  54 +#if CONFIG_OF
  55 +void __init device_tree_init(void)
  56 +{
  57 +       if (!initial_boot_params)
  58 +               return;
  59 +
  60 +       unflatten_and_copy_device_tree();
  61 +}
  62 +#endif
  63 +
  64  static struct gpio_led_platform_data bcm63xx_led_data;
  65
  66  static struct platform_device bcm63xx_gpio_leds = {
  67 @@ -149,6 +167,13 @@ static struct platform_device bcm63xx_gp
  68         .dev.platform_data = &bcm63xx_gpio_keys_data,
  69  };
  70
  71 +#if CONFIG_OF
  72 +static struct of_device_id of_ids[] = {
  73 +       { /* filled at runtime */ },
  74 +       { .compatible = "simple-bus" },
  75 +       { },
  76 +};
  77 +#endif
  78  /*
  79   * third stage init callback, register all board devices.
  80   */
  81 @@ -158,6 +183,15 @@ int __init board_register_devices(void)
  82         int led_count = 0;
  83         int usbh_ports = 0;
  84
  85 +#if CONFIG_OF
  86 +       if (of_have_populated_dt()) {
  87 +               snprintf(of_ids[0].compatible, sizeof(of_ids[0].compatible),
  88 +                        "brcm,bcm%x", bcm63xx_get_cpu_id());
  89 +
  90 +               of_platform_populate(NULL, of_ids, NULL, NULL);
  91 +       }
  92 +#endif
  93 +
  94         if (board.has_uart0)
  95                 bcm63xx_uart_register(0);
  96