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-rw-r--r--arch/arm/mach-omap2/sleep34xx.S61
1 files changed, 58 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
index c3626ea48143..d522cd70bf53 100644
--- a/arch/arm/mach-omap2/sleep34xx.S
+++ b/arch/arm/mach-omap2/sleep34xx.S
@@ -33,12 +33,14 @@
#include "prm.h"
#include "sdrc.h"
+#define SDRC_SCRATCHPAD_SEM_V 0xfa00291c
+
#define PM_PREPWSTST_CORE_V OMAP34XX_PRM_REGADDR(CORE_MOD, \
OMAP3430_PM_PREPWSTST)
#define PM_PREPWSTST_CORE_P 0x48306AE8
#define PM_PREPWSTST_MPU_V OMAP34XX_PRM_REGADDR(MPU_MOD, \
OMAP3430_PM_PREPWSTST)
-#define PM_PWSTCTRL_MPU_P OMAP3430_PRM_BASE + MPU_MOD + PM_PWSTCTRL
+#define PM_PWSTCTRL_MPU_P OMAP3430_PRM_BASE + MPU_MOD + OMAP2_PM_PWSTCTRL
#define CM_IDLEST1_CORE_V OMAP34XX_CM_REGADDR(CORE_MOD, CM_IDLEST1)
#define SRAM_BASE_P 0x40200000
#define CONTROL_STAT 0x480022F0
@@ -57,6 +59,37 @@
#define SDRC_DLLA_STATUS_V OMAP34XX_SDRC_REGADDR(SDRC_DLLA_STATUS)
#define SDRC_DLLA_CTRL_V OMAP34XX_SDRC_REGADDR(SDRC_DLLA_CTRL)
+ .text
+/* Function to aquire the semaphore in scratchpad */
+ENTRY(lock_scratchpad_sem)
+ stmfd sp!, {lr} @ save registers on stack
+wait_sem:
+ mov r0,#1
+ ldr r1, sdrc_scratchpad_sem
+wait_loop:
+ ldr r2, [r1] @ load the lock value
+ cmp r2, r0 @ is the lock free ?
+ beq wait_loop @ not free...
+ swp r2, r0, [r1] @ semaphore free so lock it and proceed
+ cmp r2, r0 @ did we succeed ?
+ beq wait_sem @ no - try again
+ ldmfd sp!, {pc} @ restore regs and return
+sdrc_scratchpad_sem:
+ .word SDRC_SCRATCHPAD_SEM_V
+ENTRY(lock_scratchpad_sem_sz)
+ .word . - lock_scratchpad_sem
+
+ .text
+/* Function to release the scratchpad semaphore */
+ENTRY(unlock_scratchpad_sem)
+ stmfd sp!, {lr} @ save registers on stack
+ ldr r3, sdrc_scratchpad_sem
+ mov r2,#0
+ str r2,[r3]
+ ldmfd sp!, {pc} @ restore regs and return
+ENTRY(unlock_scratchpad_sem_sz)
+ .word . - unlock_scratchpad_sem
+
.text
/* Function call to get the restore pointer for resume from OFF */
ENTRY(get_restore_pointer)
@@ -251,6 +284,21 @@ restore:
mcr p15, 0, r0, c7, c10, 5 @ data memory barrier
.word 0xE1600071 @ call SMI monitor (smi #1)
+#ifdef CONFIG_OMAP3_L2_AUX_SECURE_SAVE_RESTORE
+ /* Restore L2 aux control register */
+ @ set service ID for PPA
+ mov r0, #CONFIG_OMAP3_L2_AUX_SECURE_SERVICE_SET_ID
+ mov r12, r0 @ copy service ID in r12
+ mov r1, #0 @ set task ID for ROM code in r1
+ mov r2, #4 @ set some flags in r2, r6
+ mov r6, #0xff
+ 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
+ .word 0xE1600071 @ call SMI monitor (smi #1)
+#endif
b logic_l1_restore
l2_inv_api_params:
.word 0x1, 0x00
@@ -264,6 +312,11 @@ smi: .word 0xE1600070 @ Call SMI monitor (smieq)
ldr r0, [r3,#4]
mov r12, #0x3
.word 0xE1600070 @ Call SMI monitor (smieq)
+ ldr r4, scratchpad_base
+ ldr r3, [r4,#0xBC]
+ ldr r0, [r3,#12]
+ mov r12, #0x2
+ .word 0xE1600070 @ Call SMI monitor (smieq)
logic_l1_restore:
mov r1, #0
/* Invalidate all instruction caches to PoU
@@ -272,7 +325,7 @@ logic_l1_restore:
ldr r4, scratchpad_base
ldr r3, [r4,#0xBC]
- adds r3, r3, #8
+ adds r3, r3, #16
ldmia r3!, {r4-r6}
mov sp, r4
msr spsr_cxsf, r5
@@ -391,7 +444,9 @@ save_context_wfi:
mov r8, r0 /* Store SDRAM address in r8 */
mrc p15, 0, r5, c1, c0, 1 @ Read Auxiliary Control Register
mov r4, #0x1 @ Number of parameters for restore call
- stmia r8!, {r4-r5}
+ stmia r8!, {r4-r5} @ Push parameters for restore call
+ mrc p15, 1, r5, c9, c0, 2 @ Read L2 AUX ctrl register
+ stmia r8!, {r4-r5} @ Push parameters for restore call
/* Check what that target sleep state is:stored in r1*/
/* 1 - Only L1 and logic lost */
/* 2 - Only L2 lost */