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/*
* Copyright (C) 2014 Panasonic Corporation
* Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <nand.h>
#include <asm/io.h>
#include <../drivers/mtd/nand/denali.h>
static void nand_denali_wp_disable(void)
{
#ifdef CONFIG_NAND_DENALI
/*
* Since the boot rom enables the write protection for NAND boot mode,
* it must be disabled somewhere for "nand write", "nand erase", etc.
* The workaround is here to not disturb the Denali NAND controller
* driver just for a really SoC-specific thing.
*/
void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
#endif
}
static void nand_denali_fixup(void)
{
#if defined(CONFIG_NAND_DENALI) && \
(defined(CONFIG_MACH_PH1_SLD8) || defined(CONFIG_MACH_PH1_PRO4))
/*
* The Denali NAND controller on some of UniPhier SoCs does not
* automatically query the device parameters. For those SoCs,
* some registers must be set after the device is probed.
*/
void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
struct mtd_info *mtd;
struct nand_chip *chip;
if (nand_curr_device < 0 ||
nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE) {
/* NAND was not detected. Just return. */
return;
}
mtd = &nand_info[nand_curr_device];
chip = mtd->priv;
writel(mtd->erasesize / mtd->writesize, denali_reg + PAGES_PER_BLOCK);
writel(0, denali_reg + DEVICE_WIDTH);
writel(mtd->writesize, denali_reg + DEVICE_MAIN_AREA_SIZE);
writel(mtd->oobsize, denali_reg + DEVICE_SPARE_AREA_SIZE);
writel(1, denali_reg + DEVICES_CONNECTED);
/*
* chip->scan_bbt in nand_scan_tail() has been skipped.
* It should be done in here.
*/
chip->scan_bbt(mtd);
#endif
}
int board_late_init(void)
{
puts("MODE: ");
switch (spl_boot_device()) {
case BOOT_DEVICE_MMC1:
printf("eMMC Boot\n");
setenv("bootmode", "emmcboot");
nand_denali_fixup();
break;
case BOOT_DEVICE_NAND:
printf("NAND Boot\n");
setenv("bootmode", "nandboot");
nand_denali_wp_disable();
break;
case BOOT_DEVICE_NOR:
printf("NOR Boot\n");
setenv("bootmode", "norboot");
nand_denali_fixup();
break;
default:
printf("Unsupported Boot Mode\n");
return -1;
}
return 0;
}
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