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// SPDX-License-Identifier: GPL-2.0+
/*
* OMAP4 boot
*
* Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
*/
#include <common.h>
#include <asm/io.h>
#include <asm/omap_common.h>
#include <asm/arch/sys_proto.h>
#include <spl.h>
static u32 boot_devices[] = {
BOOT_DEVICE_MMC2,
BOOT_DEVICE_XIP,
BOOT_DEVICE_XIPWAIT,
BOOT_DEVICE_NAND,
BOOT_DEVICE_XIPWAIT,
BOOT_DEVICE_MMC1,
BOOT_DEVICE_ONENAND,
BOOT_DEVICE_ONENAND,
BOOT_DEVICE_MMC2,
BOOT_DEVICE_ONENAND,
BOOT_DEVICE_XIPWAIT,
BOOT_DEVICE_NAND,
BOOT_DEVICE_NAND,
BOOT_DEVICE_MMC1,
BOOT_DEVICE_ONENAND,
BOOT_DEVICE_MMC2,
BOOT_DEVICE_XIP,
BOOT_DEVICE_XIPWAIT,
BOOT_DEVICE_NAND,
BOOT_DEVICE_MMC1,
BOOT_DEVICE_MMC1,
BOOT_DEVICE_ONENAND,
BOOT_DEVICE_MMC2,
BOOT_DEVICE_XIP,
BOOT_DEVICE_MMC2_2,
BOOT_DEVICE_NAND,
BOOT_DEVICE_MMC2_2,
BOOT_DEVICE_MMC1,
BOOT_DEVICE_MMC2_2,
BOOT_DEVICE_MMC2_2,
BOOT_DEVICE_NONE,
BOOT_DEVICE_XIPWAIT,
};
u32 omap_sys_boot_device(void)
{
u32 sys_boot;
/* Grab the first 5 bits of the status register for SYS_BOOT. */
sys_boot = readl((u32 *) (*ctrl)->control_status) & ((1 << 5) - 1);
if (sys_boot >= (sizeof(boot_devices) / sizeof(u32)))
return BOOT_DEVICE_NONE;
return boot_devices[sys_boot];
}
int omap_reboot_mode(char *mode, unsigned int length)
{
unsigned int limit;
unsigned int i;
if (length < 2)
return -1;
if (!warm_reset())
return -1;
limit = (length < OMAP_REBOOT_REASON_SIZE) ? length :
OMAP_REBOOT_REASON_SIZE;
for (i = 0; i < (limit - 1); i++)
mode[i] = readb((u8 *)(OMAP44XX_SAR_RAM_BASE +
OMAP_REBOOT_REASON_OFFSET + i));
mode[i] = '\0';
return 0;
}
int omap_reboot_mode_clear(void)
{
writeb(0, (u8 *)(OMAP44XX_SAR_RAM_BASE + OMAP_REBOOT_REASON_OFFSET));
return 0;
}
int omap_reboot_mode_store(char *mode)
{
unsigned int i;
for (i = 0; i < (OMAP_REBOOT_REASON_SIZE - 1) && mode[i] != '\0'; i++)
writeb(mode[i], (u8 *)(OMAP44XX_SAR_RAM_BASE +
OMAP_REBOOT_REASON_OFFSET + i));
writeb('\0', (u8 *)(OMAP44XX_SAR_RAM_BASE +
OMAP_REBOOT_REASON_OFFSET + i));
return 0;
}
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