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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * OMAP3 boot
- *
- * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
- */
- #include <common.h>
- #include <asm/io.h>
- #include <asm/arch/sys_proto.h>
- #include <spl.h>
- static u32 boot_devices[] = {
- BOOT_DEVICE_ONENAND,
- BOOT_DEVICE_NAND,
- BOOT_DEVICE_ONENAND,
- BOOT_DEVICE_MMC2,
- BOOT_DEVICE_ONENAND,
- BOOT_DEVICE_MMC2,
- BOOT_DEVICE_MMC1,
- BOOT_DEVICE_XIP,
- BOOT_DEVICE_XIPWAIT,
- BOOT_DEVICE_MMC2,
- BOOT_DEVICE_XIP,
- BOOT_DEVICE_XIPWAIT,
- BOOT_DEVICE_NAND,
- BOOT_DEVICE_XIP,
- BOOT_DEVICE_XIPWAIT,
- BOOT_DEVICE_NAND,
- BOOT_DEVICE_ONENAND,
- BOOT_DEVICE_MMC2,
- BOOT_DEVICE_MMC1,
- BOOT_DEVICE_XIP,
- BOOT_DEVICE_XIPWAIT,
- BOOT_DEVICE_NAND,
- BOOT_DEVICE_ONENAND,
- BOOT_DEVICE_MMC2,
- BOOT_DEVICE_MMC1,
- BOOT_DEVICE_XIP,
- BOOT_DEVICE_XIPWAIT,
- BOOT_DEVICE_NAND,
- BOOT_DEVICE_MMC2_2,
- };
- u32 omap_sys_boot_device(void)
- {
- struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
- u32 sys_boot;
- /* Grab the first 5 bits of the status register for SYS_BOOT. */
- sys_boot = readl(&ctrl_base->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)
- {
- u32 reboot_mode;
- char c;
- if (length < 2)
- return -1;
- reboot_mode = readl((u32 *)(OMAP34XX_SCRATCHPAD +
- OMAP_REBOOT_REASON_OFFSET));
- c = (reboot_mode >> 24) & 0xff;
- if (c != 'B')
- return -1;
- c = (reboot_mode >> 16) & 0xff;
- if (c != 'M')
- return -1;
- c = reboot_mode & 0xff;
- mode[0] = c;
- mode[1] = '\0';
- return 0;
- }
- int omap_reboot_mode_clear(void)
- {
- writel(0, (u32 *)(OMAP34XX_SCRATCHPAD + OMAP_REBOOT_REASON_OFFSET));
- return 0;
- }
- int omap_reboot_mode_store(char *mode)
- {
- u32 reboot_mode;
- reboot_mode = 'B' << 24 | 'M' << 16 | mode[0];
- writel(reboot_mode, (u32 *)(OMAP34XX_SCRATCHPAD +
- OMAP_REBOOT_REASON_OFFSET));
- return 0;
- }
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