97 lines
1.7 KiB
C
97 lines
1.7 KiB
C
/*
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* OMAP3 boot
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*
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* Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
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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 <asm/io.h>
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#include <asm/arch/sys_proto.h>
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#include <spl.h>
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static u32 boot_devices[] = {
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BOOT_DEVICE_ONENAND,
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BOOT_DEVICE_NAND,
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BOOT_DEVICE_ONENAND,
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BOOT_DEVICE_MMC2,
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BOOT_DEVICE_ONENAND,
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BOOT_DEVICE_MMC2,
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BOOT_DEVICE_MMC1,
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BOOT_DEVICE_XIP,
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BOOT_DEVICE_XIPWAIT,
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BOOT_DEVICE_MMC2,
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BOOT_DEVICE_XIP,
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BOOT_DEVICE_XIPWAIT,
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BOOT_DEVICE_NAND,
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BOOT_DEVICE_XIP,
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BOOT_DEVICE_XIPWAIT,
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BOOT_DEVICE_NAND,
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BOOT_DEVICE_ONENAND,
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BOOT_DEVICE_MMC2,
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BOOT_DEVICE_MMC1,
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BOOT_DEVICE_XIP,
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BOOT_DEVICE_XIPWAIT,
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BOOT_DEVICE_NAND,
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BOOT_DEVICE_ONENAND,
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BOOT_DEVICE_MMC2,
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BOOT_DEVICE_MMC1,
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BOOT_DEVICE_XIP,
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BOOT_DEVICE_XIPWAIT,
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BOOT_DEVICE_NAND,
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BOOT_DEVICE_MMC2_2,
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};
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u32 omap_sys_boot_device(void)
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{
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struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
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u32 sys_boot;
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/* Grab the first 5 bits of the status register for SYS_BOOT. */
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sys_boot = readl(&ctrl_base->status) & ((1 << 5) - 1);
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if (sys_boot >= (sizeof(boot_devices) / sizeof(u32)))
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return BOOT_DEVICE_NONE;
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return boot_devices[sys_boot];
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}
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char omap_reboot_mode(void)
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{
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u32 reboot_mode;
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char c;
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reboot_mode = readl((u32 *)(OMAP34XX_SCRATCHPAD + 4));
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c = (reboot_mode >> 24) & 0xff;
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if (c != 'B')
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return -1;
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c = (reboot_mode >> 16) & 0xff;
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if (c != 'M')
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return -1;
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c = reboot_mode & 0xff;
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return c;
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}
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int omap_reboot_mode_clear(void)
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{
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writel(0, (u32 *)(OMAP34XX_SCRATCHPAD + 4));
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return 0;
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}
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int omap_reboot_mode_store(char c)
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{
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u32 reboot_mode;
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reboot_mode = 'B' << 24 | 'M' << 16 | c;
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writel(reboot_mode, (u32 *)(OMAP34XX_SCRATCHPAD + 4));
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return 0;
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}
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