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omap4: Reboot mode support

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Reboot mode is written to SAR memory before reboot in the form of a string.

This mechanism is supported on OMAP4 by various TI kernels.

It is up to each board to make use of this mechanism or not.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
This commit is contained in:
Paul Kocialkowski
2016-02-27 19:19:07 +01:00
committed by Tom Rini
parent e66782e6ea
commit faec3f9841
2 changed files with 49 additions and 0 deletions
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8
arch/arm/include/asm/arch-omap4/omap.h
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@@ -120,6 +120,10 @@ struct s32ktimer {
/* ABB tranxdone mask */
#define OMAP_ABB_MPU_TXDONE_MASK (0x1 << 7)
#define OMAP44XX_SAR_RAM_BASE 0x4a326000
#define OMAP_REBOOT_REASON_OFFSET 0xA0C
#define OMAP_REBOOT_REASON_SIZE 0x0F
/* Boot parameters */
#ifndef __ASSEMBLY__
struct omap_boot_parameters {
@@ -129,6 +133,10 @@ struct omap_boot_parameters {
unsigned char reset_reason;
unsigned char ch_flags;
};
int omap_reboot_mode(char *mode, unsigned int length);
int omap_reboot_mode_clear(void);
int omap_reboot_mode_store(char *mode);
#endif
#endif