/*
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* Copyright (C) 2014 Panasonic Corporation
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* Copyright (C) 2015-2016 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <spl.h>
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#include <linux/libfdt.h>
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#include <nand.h>
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#include <linux/io.h>
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#include <linux/printk.h>
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#include <../drivers/mtd/nand/raw/denali.h>
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#include "init.h"
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static void nand_denali_wp_disable(void)
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{
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#ifdef CONFIG_NAND_DENALI
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/*
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* Since the boot rom enables the write protection for NAND boot mode,
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* it must be disabled somewhere for "nand write", "nand erase", etc.
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* The workaround is here to not disturb the Denali NAND controller
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* driver just for a really SoC-specific thing.
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*/
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void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
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writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
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#endif
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}
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static int uniphier_set_fdt_file(void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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const char *compat;
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char dtb_name[256];
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int buf_len = sizeof(dtb_name);
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if (env_get("fdt_file"))
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return 0; /* do nothing if it is already set */
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compat = fdt_stringlist_get(gd->fdt_blob, 0, "compatible", 0, NULL);
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if (!compat)
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return -EINVAL;
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/* rip off the vendor prefix "socionext," */
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compat = strchr(compat, ',');
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if (!compat)
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return -EINVAL;
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compat++;
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strncpy(dtb_name, compat, buf_len);
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buf_len -= strlen(compat);
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strncat(dtb_name, ".dtb", buf_len);
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return env_set("fdt_file", dtb_name);
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}
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int board_late_init(void)
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{
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puts("MODE: ");
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switch (uniphier_boot_device_raw()) {
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case BOOT_DEVICE_MMC1:
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printf("eMMC Boot");
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env_set("bootmode", "emmcboot");
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break;
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case BOOT_DEVICE_NAND:
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printf("NAND Boot");
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env_set("bootmode", "nandboot");
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nand_denali_wp_disable();
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break;
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case BOOT_DEVICE_NOR:
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printf("NOR Boot");
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env_set("bootmode", "norboot");
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break;
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case BOOT_DEVICE_USB:
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printf("USB Boot");
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env_set("bootmode", "usbboot");
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break;
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default:
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printf("Unknown");
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break;
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}
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if (uniphier_have_internal_stm())
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printf(" (STM: %s)",
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uniphier_boot_from_backend() ? "OFF" : "ON");
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printf("\n");
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if (uniphier_set_fdt_file())
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printf("fdt_file environment was not set correctly\n");
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return 0;
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}
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