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From: Vicente <vicencb@gmail.com>
To: barebox@lists.infradead.org
Cc: Vicente <vicencb@gmail.com>
Subject: [PATCH 3/5] ARM: ensure irqs are disabled at barebox exit
Date: Sat, 13 Oct 2012 16:03:25 +0200	[thread overview]
Message-ID: <1350137007-10135-4-git-send-email-vicencb@gmail.com> (raw)
In-Reply-To: <1350137007-10135-1-git-send-email-vicencb@gmail.com>


Signed-off-by: Vicente <vicencb@gmail.com>
---
 arch/arm/cpu/cpu.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/cpu/cpu.c b/arch/arm/cpu/cpu.c
index 51da3b5..2bfd3ed 100644
--- a/arch/arm/cpu/cpu.c
+++ b/arch/arm/cpu/cpu.c
@@ -31,6 +31,7 @@
 #include <asm/system_info.h>
 #include <asm/cputype.h>
 #include <asm/cache.h>
+#include <asm/ptrace.h>
 
 /**
  * Enable processor's instruction cache
@@ -78,6 +79,16 @@ void arch_shutdown(void)
 	mmu_disable();
 #endif
 	flush_icache();
+	/*
+	 * barebox normally does not use interrupts, but some functionalities
+	 * (eg. OMAP4_USBBOOT) require them enabled. So be sure interrupts are
+	 * disabled before exiting.
+	 */
+#if __LINUX_ARM_ARCH__ >= 6
+	__asm__ __volatile__("cpsid i");
+#else
+	__asm__ __volatile__("msr cpsr_c, %0" : : "I"(PSR_I_BIT | SVC_MODE));
+#endif
 }
 
 #ifdef CONFIG_THUMB2_BAREBOX
-- 
1.7.12.2


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  parent reply	other threads:[~2012-10-13 14:03 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-13 14:03 [PATCH 0/5] archosg9: improve support for tablet Vicente
2012-10-13 14:03 ` [PATCH 1/5] ArchosG9: changed serial port and env Vicente
2012-10-13 14:03 ` [PATCH 2/5] ARM: add/rename PSR bits to match linux names Vicente
2012-10-13 18:25   ` Sascha Hauer
2012-10-13 14:03 ` Vicente [this message]
2012-10-14  8:57   ` [PATCH 3/5] ARM: ensure irqs are disabled at barebox exit Sascha Hauer
2012-10-13 14:03 ` [PATCH 4/5] uimage: improve transfer speed Vicente
2012-10-13 14:03 ` [PATCH 5/5] omap4_usbboot_fs: add benchmarking capabilities Vicente
2012-10-13 18:27   ` Sascha Hauer
2012-10-13 14:19 ` [PATCH 0/5] archosg9: improve support for tablet Jean-Christophe PLAGNIOL-VILLARD
2012-10-13 14:35   ` vj
2012-10-14  8:12     ` [SPAM] " Jean-Christophe PLAGNIOL-VILLARD

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