1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2014 Panasonic Corporation
4 * Copyright (C) 2015-2016 Socionext Inc.
5 * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
6 */
7
8 #include <common.h>
9 #include <spl.h>
10 #include <linux/libfdt.h>
11 #include <nand.h>
12 #include <stdio.h>
13 #include <linux/io.h>
14 #include <linux/printk.h>
15 #include <../drivers/mtd/nand/raw/denali.h>
16
17 #include "init.h"
18
nand_denali_wp_disable(void)19 static void nand_denali_wp_disable(void)
20 {
21 #ifdef CONFIG_NAND_DENALI
22 /*
23 * Since the boot rom enables the write protection for NAND boot mode,
24 * it must be disabled somewhere for "nand write", "nand erase", etc.
25 * The workaround is here to not disturb the Denali NAND controller
26 * driver just for a really SoC-specific thing.
27 */
28 void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
29
30 writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
31 #endif
32 }
33
uniphier_set_fdt_file(void)34 static int uniphier_set_fdt_file(void)
35 {
36 DECLARE_GLOBAL_DATA_PTR;
37 const char *compat;
38 char dtb_name[256];
39 int buf_len = sizeof(dtb_name);
40
41 if (env_get("fdtfile"))
42 return 0; /* do nothing if it is already set */
43
44 compat = fdt_stringlist_get(gd->fdt_blob, 0, "compatible", 0, NULL);
45 if (!compat)
46 return -EINVAL;
47
48 /* rip off the vendor prefix "socionext," */
49 compat = strchr(compat, ',');
50 if (!compat)
51 return -EINVAL;
52 compat++;
53
54 strncpy(dtb_name, compat, buf_len);
55 buf_len -= strlen(compat);
56
57 strncat(dtb_name, ".dtb", buf_len);
58
59 return env_set("fdtfile", dtb_name);
60 }
61
board_late_init(void)62 int board_late_init(void)
63 {
64 puts("MODE: ");
65
66 switch (uniphier_boot_device_raw()) {
67 case BOOT_DEVICE_MMC1:
68 printf("eMMC Boot");
69 env_set("bootdev", "emmc");
70 break;
71 case BOOT_DEVICE_NAND:
72 printf("NAND Boot");
73 env_set("bootdev", "nand");
74 nand_denali_wp_disable();
75 break;
76 case BOOT_DEVICE_NOR:
77 printf("NOR Boot");
78 env_set("bootdev", "nor");
79 break;
80 case BOOT_DEVICE_USB:
81 printf("USB Boot");
82 env_set("bootdev", "usb");
83 break;
84 default:
85 printf("Unknown");
86 break;
87 }
88
89 if (uniphier_have_internal_stm())
90 printf(" (STM: %s)",
91 uniphier_boot_from_backend() ? "OFF" : "ON");
92
93 printf("\n");
94
95 if (uniphier_set_fdt_file())
96 pr_warn("fdt_file environment was not set correctly\n");
97
98 return 0;
99 }
100