4 * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
6 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/omap_common.h>
12 #include <asm/arch/sys_proto.h>
15 static u32 boot_devices[] = {
50 u32 omap_sys_boot_device(void)
54 /* Grab the first 5 bits of the status register for SYS_BOOT. */
55 sys_boot = readl((u32 *) (*ctrl)->control_status) & ((1 << 5) - 1);
57 if (sys_boot >= (sizeof(boot_devices) / sizeof(u32)))
58 return BOOT_DEVICE_NONE;
60 return boot_devices[sys_boot];
63 int omap_reboot_mode(char *mode, unsigned int length)
74 limit = (length < OMAP_REBOOT_REASON_SIZE) ? length :
75 OMAP_REBOOT_REASON_SIZE;
77 for (i = 0; i < (limit - 1); i++)
78 mode[i] = readb((u8 *)(OMAP44XX_SAR_RAM_BASE +
79 OMAP_REBOOT_REASON_OFFSET + i));
86 int omap_reboot_mode_clear(void)
88 writeb(0, (u8 *)(OMAP44XX_SAR_RAM_BASE + OMAP_REBOOT_REASON_OFFSET));
93 int omap_reboot_mode_store(char *mode)
97 for (i = 0; i < (OMAP_REBOOT_REASON_SIZE - 1) && mode[i] != '\0'; i++)
98 writeb(mode[i], (u8 *)(OMAP44XX_SAR_RAM_BASE +
99 OMAP_REBOOT_REASON_OFFSET + i));
101 writeb('\0', (u8 *)(OMAP44XX_SAR_RAM_BASE +
102 OMAP_REBOOT_REASON_OFFSET + i));