Tero Kristo <tero.kristo@xxxxxxxxx> writes:
> From: Tero Kristo <tero.kristo@xxxxxxxxx>
>
> Current value is stored on SDRAM and it is written back during wakeup.
> Previously a static value of 0x72 was written there.
>
> Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxx>
> Signed-off-by: Jouni Hogander <jouni.hogander@xxxxxxxxx>
Thanks, applying to PM branch, queuing for pm-fixes.
Kevin
> ---
> arch/arm/mach-omap2/control.c | 1 +
> arch/arm/mach-omap2/sleep34xx.S | 23 ++++++++++++++++++++---
> 2 files changed, 21 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
> index 296f2c2..730fc53 100644
> --- a/arch/arm/mach-omap2/control.c
> +++ b/arch/arm/mach-omap2/control.c
> @@ -94,6 +94,7 @@ void *omap3_secure_ram_storage;
> * during the restore path.
> */
> u32 omap3_arm_context[128];
> +u32 omap3_aux_ctrl[2] = { 0x1, 0x0 };
>
> struct omap3_control_regs {
> u32 sysconfig;
> diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
> index f4f5ebe..0b03bf9 100644
> --- a/arch/arm/mach-omap2/sleep34xx.S
> +++ b/arch/arm/mach-omap2/sleep34xx.S
> @@ -26,6 +26,7 @@
> */
> #include <linux/linkage.h>
> #include <asm/assembler.h>
> +#include <asm/memory.h>
> #include <mach/io.h>
> #include <mach/control.h>
>
> @@ -278,7 +279,11 @@ restore:
> mov r1, #0 @ set task id for ROM code in r1
> mov r2, #4 @ set some flags in r2, r6
> mov r6, #0xff
> - adr r3, write_aux_control_params @ r3 points to parameters
> + ldr r3, write_aux_control_params @ r3 points to parameters
> + ldr r4, phys_offset
> + adds r3, r3, r4
> + ldr r4, page_offset
> + subs r3, r3, r4
> mcr p15, 0, r0, c7, c10, 4 @ data write barrier
> mcr p15, 0, r0, c7, c10, 5 @ data memory barrier
> .word 0xE1600071 @ call SMI monitor (smi #1)
> @@ -287,13 +292,18 @@ restore:
> l2_inv_api_params:
> .word 0x1, 0x00
> write_aux_control_params:
> - .word 0x1, 0x72
> + .word omap3_aux_ctrl
> l2_inv_gp:
> /* Execute smi to invalidate L2 cache */
> mov r12, #0x1 @ set up to invalide L2
> smi: .word 0xE1600070 @ Call SMI monitor (smieq)
> /* Write to Aux control register to set some bits */
> - mov r0, #0x72
> + ldr r1, write_aux_control_params
> + ldr r0, phys_offset
> + adds r1, r1, r0
> + ldr r0, page_offset
> + subs r1, r1, r0
> + ldr r0, [r1, #4]
> mov r12, #0x3
> .word 0xE1600070 @ Call SMI monitor (smieq)
> logic_l1_restore:
> @@ -420,6 +430,9 @@ usettbr0:
> save_context_wfi:
> /*b save_context_wfi*/ @ enable to debug save code
> mov r8, r0 /* Store SDRAM address in r8 */
> + mrc p15, 0, r4, c1, c0, 1 @ Read Auxiliary Control Register
> + ldr r5, write_aux_control_params
> + str r4, [r5, #4]
> /* Check what that target sleep state is:stored in r1*/
> /* 1 - Only L1 and logic lost */
> /* 2 - Only L2 lost */
> @@ -605,6 +618,10 @@ wait_dll_lock:
> bne wait_dll_lock
> bx lr
>
> +phys_offset:
> + .word PHYS_OFFSET
> +page_offset:
> + .word PAGE_OFFSET
> cm_idlest1_core:
> .word CM_IDLEST1_CORE_V
> sdrc_dlla_status:
> --
> 1.5.4.3
>
> --
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