Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755330Ab3JaQKj (ORCPT ); Thu, 31 Oct 2013 12:10:39 -0400 Received: from mail-pd0-f174.google.com ([209.85.192.174]:33273 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755290Ab3JaQKe (ORCPT ); Thu, 31 Oct 2013 12:10:34 -0400 From: Soren Brinkmann To: Michal Simek , Russell King Cc: =?UTF-8?q?S=C3=B6ren=20Brinkmann?= , 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 Message-Id: <1383235819-2552-3-git-send-email-soren.brinkmann@xilinx.com> X-Mailer: git-send-email 1.8.4.1 In-Reply-To: <1383235819-2552-1-git-send-email-soren.brinkmann@xilinx.com> References: <1383235819-2552-1-git-send-email-soren.brinkmann@xilinx.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2112 Lines: 62 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 Signed-off-by: Michal Simek --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/