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SubjectRe: n900 in next-20170901
* Tony Lindgren <tony@atomide.com> [171109 22:19]:
> * Tony Lindgren <tony@atomide.com> [171110 03:28]:
> > Then I'll follow up on cleaning up save_secure_ram_context later.
>
> Here's a better version, the static mapping did not get used.. It
> just moved the area so it happened to work. It needs to be set
> up as MT_MEMORY_RWX_NONCACHED instead.

And FYI, here's what I currently have for the follow-up patch,
but that can wait a bit.

Regards,

Tony

8< ------------------------
diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
--- a/arch/arm/mach-omap2/sleep34xx.S
+++ b/arch/arm/mach-omap2/sleep34xx.S
@@ -45,7 +45,6 @@
#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 CM_IDLEST_CKGEN_V OMAP34XX_CM_REGADDR(PLL_MOD, CM_IDLEST)
-#define SRAM_BASE_P OMAP3_SRAM_PA
#define CONTROL_STAT OMAP343X_CTRL_BASE + OMAP343X_CONTROL_STATUS
#define CONTROL_MEM_RTA_CTRL (OMAP343X_CTRL_BASE +\
OMAP36XX_CONTROL_MEM_RTA_CTRL)
@@ -103,10 +102,8 @@ ENTRY(save_secure_ram_context)
stmfd sp!, {r4 - r11, lr} @ save registers on stack
adr r3, api_params @ r3 points to parameters
str r0, [r3,#0x4] @ r0 has sdram address
- ldr r12, high_mask
- and r3, r3, r12
- ldr r12, sram_phy_addr_mask
- orr r3, r3, r12
+ ldr r12, sram_phys_offset @ load sram physical offset
+ sub r3, r3, r12 @ parameters physical address
mov r0, #25 @ set service ID for PPA
mov r12, r0 @ copy secure service ID in r12
mov r1, #0 @ set task id for ROM code in r1
@@ -121,10 +118,8 @@ ENTRY(save_secure_ram_context)
nop
ldmfd sp!, {r4 - r11, pc}
.align
-sram_phy_addr_mask:
- .word SRAM_BASE_P
-high_mask:
- .word 0xffff
+sram_phys_offset:
+ .word OMAP34XX_SRAM_VIRT - OMAP34XX_SRAM_PHYS
api_params:
.word 0x4, 0x0, 0x0, 0x1, 0x1
ENDPROC(save_secure_ram_context)
@@ -521,7 +516,7 @@ pm_pwstctrl_mpu:
scratchpad_base:
.word SCRATCHPAD_BASE_P
sram_base:
- .word SRAM_BASE_P + 0x8000
+ .word OMAP34XX_SRAM_PHYS + 0x8000
control_stat:
.word CONTROL_STAT
control_mem_rta:
diff --git a/arch/arm/mach-omap2/sram.c b/arch/arm/mach-omap2/sram.c
--- a/arch/arm/mach-omap2/sram.c
+++ b/arch/arm/mach-omap2/sram.c
@@ -31,7 +31,7 @@
#include "sram.h"

#define OMAP2_SRAM_PUB_PA (OMAP2_SRAM_PA + 0xf800)
-#define OMAP3_SRAM_PUB_PA (OMAP3_SRAM_PA + 0x8000)
+#define OMAP3_SRAM_PUB_PA (OMAP34XX_SRAM_PHYS + 0x8000)

#define SRAM_BOOTLOADER_SZ 0x00

@@ -105,7 +105,7 @@ static void __init omap_detect_sram(void)
}
} else {
if (cpu_is_omap34xx()) {
- omap_sram_start = OMAP3_SRAM_PA;
+ omap_sram_start = OMAP34XX_SRAM_PHYS;
omap_sram_size = 0x10000; /* 64K */
} else {
omap_sram_start = OMAP2_SRAM_PA;
diff --git a/arch/arm/mach-omap2/sram.h b/arch/arm/mach-omap2/sram.h
--- a/arch/arm/mach-omap2/sram.h
+++ b/arch/arm/mach-omap2/sram.h
@@ -59,4 +59,3 @@ static inline void omap_push_sram_idle(void) {}
* Used by the SRAM management code and the idle sleep code.
*/
#define OMAP2_SRAM_PA 0x40200000
-#define OMAP3_SRAM_PA 0x40200000
--
2.15.0
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