92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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* Copyright (C) 2014 Panasonic Corporation
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* Author: Masahiro Yamada <yamada.m@jp.panasonic.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 <nand.h>
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#include <asm/io.h>
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#include <../drivers/mtd/nand/denali.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 void nand_denali_fixup(void)
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{
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#if defined(CONFIG_NAND_DENALI) && \
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(defined(CONFIG_MACH_PH1_SLD8) || defined(CONFIG_MACH_PH1_PRO4))
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/*
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* The Denali NAND controller on some of UniPhier SoCs does not
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* automatically query the device parameters. For those SoCs,
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* some registers must be set after the device is probed.
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*/
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void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
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struct mtd_info *mtd;
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struct nand_chip *chip;
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if (nand_curr_device < 0 ||
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nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE) {
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/* NAND was not detected. Just return. */
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return;
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}
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mtd = &nand_info[nand_curr_device];
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chip = mtd->priv;
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writel(mtd->erasesize / mtd->writesize, denali_reg + PAGES_PER_BLOCK);
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writel(0, denali_reg + DEVICE_WIDTH);
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writel(mtd->writesize, denali_reg + DEVICE_MAIN_AREA_SIZE);
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writel(mtd->oobsize, denali_reg + DEVICE_SPARE_AREA_SIZE);
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writel(1, denali_reg + DEVICES_CONNECTED);
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/*
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* chip->scan_bbt in nand_scan_tail() has been skipped.
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* It should be done in here.
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*/
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chip->scan_bbt(mtd);
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#endif
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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 (spl_boot_device()) {
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case BOOT_DEVICE_MMC1:
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printf("eMMC Boot\n");
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setenv("bootmode", "emmcboot");
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nand_denali_fixup();
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break;
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case BOOT_DEVICE_NAND:
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printf("NAND Boot\n");
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setenv("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\n");
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setenv("bootmode", "norboot");
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nand_denali_fixup();
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break;
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default:
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printf("Unsupported Boot Mode\n");
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return -1;
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}
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return 0;
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}
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