2 * Copyright (C) 2014 Panasonic Corporation
3 * Copyright (C) 2015-2016 Socionext Inc.
4 * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
6 * SPDX-License-Identifier: GPL-2.0+
14 #include <../drivers/mtd/nand/denali.h>
18 static void nand_denali_wp_disable(void)
20 #ifdef CONFIG_NAND_DENALI
22 * Since the boot rom enables the write protection for NAND boot mode,
23 * it must be disabled somewhere for "nand write", "nand erase", etc.
24 * The workaround is here to not disturb the Denali NAND controller
25 * driver just for a really SoC-specific thing.
27 void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
29 writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
33 static int uniphier_set_fdt_file(void)
35 DECLARE_GLOBAL_DATA_PTR;
38 int buf_len = sizeof(dtb_name);
40 if (env_get("fdt_file"))
41 return 0; /* do nothing if it is already set */
43 compat = fdt_stringlist_get(gd->fdt_blob, 0, "compatible", 0, NULL);
47 /* rip off the vendor prefix "socionext," */
48 compat = strchr(compat, ',');
53 strncpy(dtb_name, compat, buf_len);
54 buf_len -= strlen(compat);
56 strncat(dtb_name, ".dtb", buf_len);
58 return env_set("fdt_file", dtb_name);
61 int board_late_init(void)
65 switch (uniphier_boot_device_raw()) {
66 case BOOT_DEVICE_MMC1:
68 env_set("bootmode", "emmcboot");
70 case BOOT_DEVICE_NAND:
72 env_set("bootmode", "nandboot");
73 nand_denali_wp_disable();
77 env_set("bootmode", "norboot");
81 env_set("bootmode", "usbboot");
88 if (uniphier_have_internal_stm())
90 uniphier_boot_from_backend() ? "OFF" : "ON");
94 if (uniphier_set_fdt_file())
95 printf("fdt_file environment was not set correctly\n");