Commit 4444d712 authored by Santosh Shilimkar's avatar Santosh Shilimkar Committed by Kevin Hilman
Browse files

OMAP3: PM: Use ARMv7 supported instructions instead of legacy CP15 ones 



On ARMv7 dsb, dmb instructions are supported and can be used directly
instead of their cp15 equivalnet. Also remove the opcodes for smc
and use the available instruction directly in OMAP3 low power asm code

Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@ti.com>
parent b1ace380

arch/arm/mach-omap2/sleep34xx.S

+10 −11
Original line number Diff line number Diff line
@@ -144,8 +144,8 @@ ENTRY(save_secure_ram_context) 
	mov	r1, #0			@ set task id for ROM code in r1

	mov	r2, #4			@ set some flags in r2, r6

	mov	r6, #0xff

	mcr	p15, 0, r0, c7, c10, 4	@ data write barrier

	mcr	p15, 0, r0, c7, c10, 5	@ data memory barrier

	dsb				@ data write barrier

	dmb				@ data memory barrier

	smc	#1			@ call SMI monitor (smi #1)

	nop

	nop
@@ -314,9 +314,8 @@ omap3_do_wfi: 
	str	r5, [r4]		@ write back to SDRC_POWER register



	/* Data memory barrier and Data sync barrier */

	mov	r1, #0

	mcr	p15, 0, r1, c7, c10, 4

	mcr	p15, 0, r1, c7, c10, 5

	dsb

	dmb



/*

 * ===================================
@@ -431,8 +430,8 @@ skipl2dis: 
	mov	r2, #4			@ set some flags in r2, r6

	mov	r6, #0xff

	adr	r3, l2_inv_api_params	@ r3 points to dummy parameters

	mcr	p15, 0, r0, c7, c10, 4	@ data write barrier

	mcr	p15, 0, r0, c7, c10, 5	@ data memory barrier

	dsb				@ data write barrier

	dmb				@ data memory barrier

	smc	#1			@ call SMI monitor (smi #1)

	/* Write to Aux control register to set some bits */

	mov	r0, #42			@ set service ID for PPA
@@ -442,8 +441,8 @@ skipl2dis: 
	mov	r6, #0xff

	ldr	r4, scratchpad_base

	ldr	r3, [r4, #0xBC]		@ r3 points to parameters

	mcr	p15, 0, r0, c7, c10, 4	@ data write barrier

	mcr	p15, 0, r0, c7, c10, 5	@ data memory barrier

	dsb				@ data write barrier

	dmb				@ data memory barrier

	smc	#1			@ call SMI monitor (smi #1)



#ifdef CONFIG_OMAP3_L2_AUX_SECURE_SAVE_RESTORE
@@ -457,8 +456,8 @@ skipl2dis: 
	ldr	r4, scratchpad_base

	ldr	r3, [r4, #0xBC]

	adds	r3, r3, #8		@ r3 points to parameters

	mcr	p15, 0, r0, c7, c10, 4	@ data write barrier

	mcr	p15, 0, r0, c7, c10, 5	@ data memory barrier

	dsb				@ data write barrier

	dmb				@ data memory barrier

	smc	#1			@ call SMI monitor (smi #1)

#endif

	b	logic_l1_restore

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