From: Soren Brinkmann <soren.brinkmann@xilinx.com>
To: Michal Simek <michal.simek@xilinx.com>,
Russell King <linux@arm.linux.org.uk>
Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/6] arm: zynq: Invalidate L1 in secondary boot
Date: Thu, 31 Oct 2013 09:10:15 -0700 [thread overview]
Message-ID: <1383235819-2552-3-git-send-email-soren.brinkmann@xilinx.com> (raw)
In-Reply-To: <1383235819-2552-1-git-send-email-soren.brinkmann@xilinx.com>
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>
---
arch/arm/mach-zynq/common.h | 2 ++
arch/arm/mach-zynq/headsmp.S | 6 +++++-
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 2512624e657d..daed70682c54 100644
--- a/arch/arm/mach-zynq/platsmp.c
+++ b/arch/arm/mach-zynq/platsmp.c
@@ -95,7 +95,7 @@ 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);
}
/*
--
1.8.4.1
next prev parent reply other threads:[~2013-10-31 16:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-31 16:10 [PATCH 0/6] arm: zynq: BSP update Soren Brinkmann
2013-10-31 16:10 ` [PATCH 1/6] arm: zynq: platsmp: Fix CPU presence check Soren Brinkmann
2013-10-31 16:17 ` Russell King - ARM Linux
2013-10-31 17:37 ` [PATCH] arm: zynq: platsmp: Remove " Soren Brinkmann
2013-10-31 16:42 ` [PATCH 1/6] arm: zynq: platsmp: Fix " Sudeep KarkadaNagesha
2013-10-31 16:10 ` Soren Brinkmann [this message]
2013-10-31 16:10 ` [PATCH 3/6] arm: zynq: Add support for zynq_cpu_kill function Soren Brinkmann
2013-10-31 16:10 ` [PATCH 4/6] arm: zynq: Use of_platform_populate instead of bus_probe Soren Brinkmann
2013-10-31 16:10 ` [PATCH 5/6] arm: zynq: Set proper GIC flags Soren Brinkmann
2013-10-31 16:10 ` [PATCH 6/6] arm: zynq: headsmp: Move .glbl out of actual code Soren Brinkmann
2013-11-06 7:46 ` Michal Simek
2013-11-06 16:41 ` Sören Brinkmann
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