From: Vicente Bergas <vicencb@gmail.com>
To: barebox@lists.infradead.org
Cc: Vicente Bergas <vicencb@gmail.com>
Subject: [PATCH 3/6] ARM: ensure irqs are disabled at barebox exit
Date: Mon, 15 Oct 2012 02:22:37 +0200 [thread overview]
Message-ID: <1350260560-15528-4-git-send-email-vicencb@gmail.com> (raw)
In-Reply-To: <1350260560-15528-1-git-send-email-vicencb@gmail.com>
Signed-off-by: Vicente Bergas <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..4cf4efa 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
@@ -74,10 +75,20 @@ int icache_status(void)
*/
void arch_shutdown(void)
{
+ uint32_t r;
+
#ifdef CONFIG_MMU
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.
+ */
+ __asm__ __volatile__("mrs %0, cpsr" : "=r"(r));
+ r |= PSR_I_BIT;
+ __asm__ __volatile__("msr cpsr, %0" : : "r"(r));
}
#ifdef CONFIG_THUMB2_BAREBOX
--
1.7.12.3
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next prev parent reply other threads:[~2012-10-15 0:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-15 0:22 [PATCH 0/6] archosg9: improve support for tablet Vicente Bergas
2012-10-15 0:22 ` [PATCH 1/6] ArchosG9: changed serial port and env Vicente Bergas
2012-10-15 0:22 ` [PATCH 2/6] ARM: add rename PSR bits to match linux names Vicente Bergas
2012-10-15 0:22 ` Vicente Bergas [this message]
2012-10-15 0:22 ` [PATCH 4/6] UIMAGE: improve transfer speed Vicente Bergas
2012-10-15 0:22 ` [PATCH 5/6] ARM: use arm setup stack function on archosg9 Vicente Bergas
2012-10-15 0:22 ` [PATCH 6/6] OMAP4: clean voltage switch Vicente Bergas
2012-10-15 7:17 ` Sascha Hauer
2012-10-15 7:27 ` [PATCH 0/6] archosg9: improve support for tablet Sascha Hauer
2012-10-18 22:22 ` vj
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