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| author | Soren Brinkmann <soren.brinkmann@xilinx.com> | 2013-10-31 17:10:15 +0100 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2013-12-10 14:17:55 +0100 |
| commit | 6a37ff388a0b5f39062b883ae2a0f5c742c2492b (patch) | |
| tree | 1dbce0d979b08ee077fe83b9e48961b8f14b495d | |
| parent | arm: zynq: platsmp: Remove CPU presence check (diff) | |
| download | linux-6a37ff388a0b5f39062b883ae2a0f5c742c2492b.tar.xz linux-6a37ff388a0b5f39062b883ae2a0f5c742c2492b.zip | |
arm: zynq: Invalidate L1 in secondary boot
During boot, Linux initiates a clean-invalidate operation only, resulting
in faulty data to be written to the memory system during resume.
Therefore invalidate the L1 in the secondary boot path to avoid these
issues.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| -rw-r--r-- | arch/arm/mach-zynq/common.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-zynq/headsmp.S | 6 | ||||
| -rw-r--r-- | arch/arm/mach-zynq/platsmp.c | 2 |
3 files changed, 8 insertions, 2 deletions
diff --git a/arch/arm/mach-zynq/common.h b/arch/arm/mach-zynq/common.h index 3040d219570f..c22c92cea8cb 100644 --- a/arch/arm/mach-zynq/common.h +++ b/arch/arm/mach-zynq/common.h @@ -17,6 +17,8 @@ #ifndef __MACH_ZYNQ_COMMON_H__ #define __MACH_ZYNQ_COMMON_H__ +void zynq_secondary_startup(void); + extern int zynq_slcr_init(void); extern void zynq_slcr_system_reset(void); extern void zynq_slcr_cpu_stop(int cpu); diff --git a/arch/arm/mach-zynq/headsmp.S b/arch/arm/mach-zynq/headsmp.S index d4cd5f34fe5c..57a32869f0aa 100644 --- a/arch/arm/mach-zynq/headsmp.S +++ b/arch/arm/mach-zynq/headsmp.S @@ -18,5 +18,9 @@ zynq_secondary_trampoline_jump: .word /* cpu 1 */ .globl zynq_secondary_trampoline_end zynq_secondary_trampoline_end: - ENDPROC(zynq_secondary_trampoline) + +ENTRY(zynq_secondary_startup) + bl v7_invalidate_l1 + b secondary_startup +ENDPROC(zynq_secondary_startup) diff --git a/arch/arm/mach-zynq/platsmp.c b/arch/arm/mach-zynq/platsmp.c index 03a62d5df8f4..f6e62c4a0afc 100644 --- a/arch/arm/mach-zynq/platsmp.c +++ b/arch/arm/mach-zynq/platsmp.c @@ -90,7 +90,7 @@ EXPORT_SYMBOL(zynq_cpun_start); static int zynq_boot_secondary(unsigned int cpu, struct task_struct *idle) { - return zynq_cpun_start(virt_to_phys(secondary_startup), cpu); + return zynq_cpun_start(virt_to_phys(zynq_secondary_startup), cpu); } /* |