The v7_invalidate_l1 was used for the L1 cache that come out from reset
in a undefined state. This is no need for Cortex-A15. We do it for A9
only.
Signed-off-by: Joseph Lo <josephl@xxxxxxxxxx>
---
V2:
* take care the v7_invalidate_l1 in tegra_secondary_startup also
---
arch/arm/mach-tegra/headsmp.S | 3 ++-
arch/arm/mach-tegra/reset-handler.S | 7 +++++--
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-tegra/headsmp.S b/arch/arm/mach-tegra/headsmp.S
index 045c16f..2072e73 100644
--- a/arch/arm/mach-tegra/headsmp.S
+++ b/arch/arm/mach-tegra/headsmp.S
@@ -6,6 +6,7 @@
.section ".text.head", "ax"
ENTRY(tegra_secondary_startup)
- bl v7_invalidate_l1
+ check_cpu_part_num 0xc09, r8, r9
+ bleq v7_invalidate_l1
b secondary_startup
ENDPROC(tegra_secondary_startup)
diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S
index 39dc9e7..75285a3 100644
--- a/arch/arm/mach-tegra/reset-handler.S
+++ b/arch/arm/mach-tegra/reset-handler.S
@@ -40,9 +40,11 @@
* re-enabling sdram.
*
* r6: SoC ID
+ * r8: CPU part number
*/
ENTRY(tegra_resume)
- bl v7_invalidate_l1
+ check_cpu_part_num 0xc09, r8, r9
+ bleq v7_invalidate_l1
cpu_id r0
tegra_get_soc_id TEGRA_APB_MISC_BASE, r6
@@ -70,7 +72,8 @@ no_cpu0_chk:
str r1, [r2]
1:
- check_cpu_part_num 0xc09, r8, r9
+ mov32 r9, 0xc09
+ cmp r8, r9
bne not_ca9
#ifdef CONFIG_HAVE_ARM_SCU
/* enable SCU */
--
1.8.3.2
--
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