Commit c356bdb4 authored by Shawn Guo's avatar Shawn Guo
Browse files

ARM: imx6: move v7_cpu_resume() into suspend-imx6.S 



The suspend-imx6.S is introduced recently for suspend low-level assembly
code.  Since function v7_cpu_resume() is only used by suspend support,
it makes sense to move the function into suspend-imx6.S, and control the
build of the file with CONFIG_SUSPEND option.

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 7ea653ef

arch/arm/mach-imx/Makefile

+3 −2
Original line number Diff line number Diff line
@@ -103,9 +103,10 @@ obj-$(CONFIG_SOC_IMX6Q) += clk-imx6q.o mach-imx6q.o 
obj-$(CONFIG_SOC_IMX6SL) += clk-imx6sl.o mach-imx6sl.o



AFLAGS_suspend-imx6.o :=-Wa,-march=armv7-a

obj-$(CONFIG_SOC_IMX6Q) += pm-imx6q.o headsmp.o suspend-imx6.o

obj-$(CONFIG_SUSPEND) += suspend-imx6.o

obj-$(CONFIG_SOC_IMX6Q) += pm-imx6q.o headsmp.o

# i.MX6SL reuses i.MX6Q code

obj-$(CONFIG_SOC_IMX6SL) += pm-imx6q.o headsmp.o suspend-imx6.o

obj-$(CONFIG_SOC_IMX6SL) += pm-imx6q.o headsmp.o



# i.MX5 based machines

obj-$(CONFIG_MACH_MX51_BABBAGE) += mach-mx51_babbage.o

arch/arm/mach-imx/common.h

+7 −1
Original line number Diff line number Diff line
@@ -116,7 +116,6 @@ void imx_enable_cpu(int cpu, bool enable); 
void imx_set_cpu_jump(int cpu, void *jump_addr);

u32 imx_get_cpu_arg(int cpu);

void imx_set_cpu_arg(int cpu, u32 arg);

void v7_cpu_resume(void);

#ifdef CONFIG_SMP

void v7_secondary_startup(void);

void imx_scu_map_io(void);
@@ -145,7 +144,14 @@ void imx6sl_set_wait_clk(bool enter); 
void imx_cpu_die(unsigned int cpu);

int imx_cpu_kill(unsigned int cpu);



#ifdef CONFIG_SUSPEND

void v7_cpu_resume(void);

void imx6_suspend(void __iomem *ocram_vbase);

#else

static inline void v7_cpu_resume(void) {}

static inline void imx6_suspend(void __iomem *ocram_vbase) {}

#endif



void imx6q_pm_init(void);

void imx6dl_pm_init(void);

void imx6sl_pm_init(void);

arch/arm/mach-imx/headsmp.S

+0 −36
Original line number Diff line number Diff line
@@ -12,8 +12,6 @@ 


#include <linux/linkage.h>

#include <linux/init.h>

#include <asm/asm-offsets.h>

#include <asm/hardware/cache-l2x0.h>



	.section ".text.head", "ax"
@@ -35,37 +33,3 @@ ENTRY(v7_secondary_startup) 
	b	secondary_startup

ENDPROC(v7_secondary_startup)

#endif
 


#ifdef CONFIG_ARM_CPU_SUSPEND

/*

 * The following code must assume it is running from physical address

 * where absolute virtual addresses to the data section have to be

 * turned into relative ones.

 */



#ifdef CONFIG_CACHE_L2X0

	.macro	pl310_resume

	adr	r0, l2x0_saved_regs_offset

	ldr	r2, [r0]

	add	r2, r2, r0

	ldr	r0, [r2, #L2X0_R_PHY_BASE]	@ get physical base of l2x0

	ldr	r1, [r2, #L2X0_R_AUX_CTRL]	@ get aux_ctrl value

	str	r1, [r0, #L2X0_AUX_CTRL]	@ restore aux_ctrl

	mov	r1, #0x1

	str	r1, [r0, #L2X0_CTRL]		@ re-enable L2

	.endm



l2x0_saved_regs_offset:

	.word	l2x0_saved_regs - .



#else

	.macro	pl310_resume

	.endm

#endif



ENTRY(v7_cpu_resume)

	bl	v7_invalidate_l1

	pl310_resume

	b	cpu_resume

ENDPROC(v7_cpu_resume)

#endif

arch/arm/mach-imx/suspend-imx6.S

+33 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
 */



#include <linux/linkage.h>

#include <asm/asm-offsets.h>

#include <asm/hardware/cache-l2x0.h>

#include "hardware.h"
@@ -326,3 +327,35 @@ resume: 


	mov	pc, lr

ENDPROC(imx6_suspend)



/*

 * The following code must assume it is running from physical address

 * where absolute virtual addresses to the data section have to be

 * turned into relative ones.

 */



#ifdef CONFIG_CACHE_L2X0

	.macro	pl310_resume

	adr	r0, l2x0_saved_regs_offset

	ldr	r2, [r0]

	add	r2, r2, r0

	ldr	r0, [r2, #L2X0_R_PHY_BASE]	@ get physical base of l2x0

	ldr	r1, [r2, #L2X0_R_AUX_CTRL]	@ get aux_ctrl value

	str	r1, [r0, #L2X0_AUX_CTRL]	@ restore aux_ctrl

	mov	r1, #0x1

	str	r1, [r0, #L2X0_CTRL]		@ re-enable L2

	.endm



l2x0_saved_regs_offset:

	.word	l2x0_saved_regs - .



#else

	.macro	pl310_resume

	.endm

#endif



ENTRY(v7_cpu_resume)

	bl	v7_invalidate_l1

	pl310_resume

	b	cpu_resume

ENDPROC(v7_cpu_resume)

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