linux/arch/arm/include/asm/suspend.h
Stephen Boyd 32e55a777f ARM: 8389/1: Add cpu_resume_arm() for firmwares that resume in ARM state
Some platforms always enter the kernel in the ARM state even if
the kernel is compiled for THUMB2. Add a small wrapper on top of
cpu_resume() that switches into THUMB2 state.

This provides the functionality to fix a problem reported by Kevin
Hilman on next-20150601 where the ifc6410 fails to boot a THUMB2
kernel because the platform's firmware always enters the kernel in
ARM mode from deep idle states.

(rmk: tweaked to work without BSYM->badr changes.)

Reported-by: Kevin Hilman <khilman@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-06-12 21:17:17 +01:00

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C

#ifndef __ASM_ARM_SUSPEND_H
#define __ASM_ARM_SUSPEND_H
struct sleep_save_sp {
u32 *save_ptr_stash;
u32 save_ptr_stash_phys;
};
extern void cpu_resume(void);
extern void cpu_resume_arm(void);
extern int cpu_suspend(unsigned long, int (*)(unsigned long));
#endif