1 files changed, 104 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap3/boot.c b/arch/arm/mach-omap2/omap3/boot.c
new file mode 100644
index 0000000..64b242b
--- /dev/null
+++ b/arch/arm/mach-omap2/omap3/boot.c
@@ -0,0 +1,104 @@
+/*
+ * OMAP3 boot
+ *
+ * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#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;
+}