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Merge branch 'master' of git://git.denx.de/u-boot-socfpga
[people/ms/u-boot.git] / arch / arm / mach-uniphier / board_late_init.c
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5894ca00 1/*
f6e7f07c 2 * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
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3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
8#include <spl.h>
8ea4f49a 9#include <libfdt.h>
5894ca00 10#include <nand.h>
f6e7f07c 11#include <linux/io.h>
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12#include <../drivers/mtd/nand/denali.h>
13
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14#include "boot-mode/boot-device.h"
15
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16static 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
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31#define VENDOR_PREFIX "socionext,"
32#define DTB_FILE_PREFIX "uniphier-"
33
34static int uniphier_set_fdt_file(void)
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35{
36 DECLARE_GLOBAL_DATA_PTR;
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37 const char *compat;
38 char dtb_name[256];
39 int buf_len = 256;
40 int ret;
41
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42 if (getenv("fdt_file"))
43 return 0; /* do nothing if it is already set */
44
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45 ret = fdt_get_string(gd->fdt_blob, 0, "compatible", &compat);
46 if (ret)
47 return -EINVAL;
48
49 if (strncmp(compat, VENDOR_PREFIX, strlen(VENDOR_PREFIX)))
50 return -EINVAL;
51
52 compat += strlen(VENDOR_PREFIX);
53
54 strncat(dtb_name, DTB_FILE_PREFIX, buf_len);
55 buf_len -= strlen(DTB_FILE_PREFIX);
56
57 strncat(dtb_name, compat, buf_len);
58 buf_len -= strlen(compat);
59
60 strncat(dtb_name, ".dtb", buf_len);
61
80630dad 62 return setenv("fdt_file", dtb_name);
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63}
64
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65int board_late_init(void)
66{
67 puts("MODE: ");
68
fec48163 69 switch (spl_boot_device_raw()) {
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70 case BOOT_DEVICE_MMC1:
71 printf("eMMC Boot\n");
72 setenv("bootmode", "emmcboot");
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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");
5894ca00 82 break;
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83 case BOOT_DEVICE_USB:
84 printf("USB Boot\n");
85 setenv("bootmode", "usbboot");
86 break;
5894ca00 87 default:
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88 printf("Unknown\n");
89 break;
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90 }
91
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92 if (uniphier_set_fdt_file())
93 printf("fdt_file environment was not set correctly\n");
8ea4f49a 94
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95 return 0;
96}