arch/arm/mach-uniphier/board_late_init.c

   1 /*
   2  * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <spl.h>
   9 #include <libfdt.h>
  10 #include <nand.h>
  11 #include <linux/io.h>
  12 #include <../drivers/mtd/nand/denali.h>
  13
  14 #include "boot-mode/boot-device.h"
  15
  16 static void nand_denali_wp_disable(void)
  17 {
  18 #ifdef CONFIG_NAND_DENALI
  19         /*
  20          * Since the boot rom enables the write protection for NAND boot mode,
  21          * it must be disabled somewhere for "nand write", "nand erase", etc.
  22          * The workaround is here to not disturb the Denali NAND controller
  23          * driver just for a really SoC-specific thing.
  24          */
  25         void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
  26
  27         writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
  28 #endif
  29 }
  30
  31 struct uniphier_fdt_file {
  32         const char *compatible;
  33         const char *file_name;
  34 };
  35
  36 static const struct uniphier_fdt_file uniphier_fdt_files[] = {
  37         { "socionext,ph1-ld4-ref", "uniphier-ph1-ld4-ref.dtb", },
  38         { "socionext,ph1-ld6b-ref", "uniphier-ph1-ld6b-ref.dtb", },
  39         { "socionext,ph1-ld10-ref", "uniphier-ph1-ld10-ref.dtb", },
  40         { "socionext,ph1-pro4-ace", "uniphier-ph1-pro4-ace.dtb", },
  41         { "socionext,ph1-pro4-ref", "uniphier-ph1-pro4-ref.dtb", },
  42         { "socionext,ph1-pro4-sanji", "uniphier-ph1-pro4-sanji.dtb", },
  43         { "socionext,ph1-pro5-4kbox", "uniphier-ph1-pro5-4kbox.dtb", },
  44         { "socionext,ph1-sld3-ref", "uniphier-ph1-sld3-ref.dtb", },
  45         { "socionext,ph1-sld8-ref", "uniphier-ph1-sld8-ref.dtb", },
  46         { "socionext,proxstream2-gentil", "uniphier-proxstream2-gentil.dtb", },
  47         { "socionext,proxstream2-vodka", "uniphier-proxstream2-vodka.dtb", },
  48 };
  49
  50 static void uniphier_set_fdt_file(void)
  51 {
  52         DECLARE_GLOBAL_DATA_PTR;
  53         int i;
  54
  55         /* lookup DTB file name based on the compatible string */
  56         for (i = 0; i < ARRAY_SIZE(uniphier_fdt_files); i++) {
  57                 if (!fdt_node_check_compatible(gd->fdt_blob, 0,
  58                                         uniphier_fdt_files[i].compatible)) {
  59                         setenv("fdt_file", uniphier_fdt_files[i].file_name);
  60                         return;
  61                 }
  62         }
  63 }
  64
  65 int board_late_init(void)
  66 {
  67         puts("MODE:  ");
  68
  69         switch (spl_boot_device_raw()) {
  70         case BOOT_DEVICE_MMC1:
  71                 printf("eMMC Boot\n");
  72                 setenv("bootmode", "emmcboot");
  73                 break;
  74         case BOOT_DEVICE_NAND:
  75                 printf("NAND Boot\n");
  76                 setenv("bootmode", "nandboot");
  77                 nand_denali_wp_disable();
  78                 break;
  79         case BOOT_DEVICE_NOR:
  80                 printf("NOR Boot\n");
  81                 setenv("bootmode", "norboot");
  82                 break;
  83         case BOOT_DEVICE_USB:
  84                 printf("USB Boot\n");
  85                 setenv("bootmode", "usbboot");
  86                 break;
  87         default:
  88                 printf("Unsupported Boot Mode\n");
  89                 return -1;
  90         }
  91
  92         uniphier_set_fdt_file();
  93
  94         return 0;
  95 }