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From: Vicente <vicencb@gmail.com>
To: barebox@lists.infradead.org
Cc: Vicente <vicencb@gmail.com>
Subject: [PATCH 03/13] ARM: ensure irqs are disabled
Date: Mon,  8 Oct 2012 00:01:17 +0200	[thread overview]
Message-ID: <1349647287-28224-4-git-send-email-vicencb@gmail.com> (raw)
In-Reply-To: <1349647287-28224-1-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 87ba877..da88f00 100644
--- a/arch/arm/cpu/cpu.c
+++ b/arch/arm/cpu/cpu.c
@@ -28,6 +28,7 @@
 #include <asm/mmu.h>
 #include <asm/system.h>
 #include <asm/memory.h>
+#include <asm/ptrace.h>
 
 /**
  * Enable processor's instruction cache
@@ -85,6 +86,16 @@ void arch_shutdown(void)
 		: "r0", "r1", "r2", "r3", "r6", "r10", "r12", "lr", "cc", "memory"
 	);
 #endif
+	/*
+	 * 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\n");
+#else
+	__asm__ __volatile__ ("msr cpsr_c, #PSR_I_BIT | SVC_MODE\n");
+#endif
 }
 
 #ifdef CONFIG_THUMB2_BAREBOX
-- 
1.7.12.2


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  parent reply	other threads:[~2012-10-07 22:01 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-07 22:01 [PATCH 00/13] archosg9: add support for tablet, fourth round Vicente
2012-10-07 22:01 ` [PATCH 01/13] twl6030: add debug info Vicente
2012-10-07 22:01 ` [PATCH 02/13] omap4: add rename definitions to match datasheet Vicente
2012-10-07 22:01 ` Vicente [this message]
2012-10-08 20:21   ` [PATCH 03/13] ARM: ensure irqs are disabled Sascha Hauer
2012-10-07 22:01 ` [PATCH 04/13] omap: revert gpiolib Vicente
2012-10-07 22:01 ` [PATCH 05/13] omap4: add usb boot source Vicente
2012-10-07 22:01 ` [PATCH 06/13] bootm: close open files Vicente
2012-10-08 20:18   ` Sascha Hauer
2012-10-08 21:02     ` vj
2012-10-07 22:01 ` [PATCH 07/13] uimage: improve transfer speed Vicente
2012-10-08 20:01   ` Sascha Hauer
2012-10-08 20:48     ` vj
2012-10-07 22:01 ` [PATCH 08/13] fs: improve robustness Vicente
2012-10-07 22:01 ` [PATCH 09/13] omap4: add support for booting cpu from usb Vicente
2012-10-07 22:01 ` [PATCH 10/13] omap4: add serial communications over usb boot Vicente
2012-10-07 22:01 ` [PATCH 11/13] omap4: add filesystem support " Vicente
2012-10-07 22:01 ` [PATCH 12/13] omap4: add support for loading second stage from usb Vicente
2012-10-07 22:01 ` [PATCH 13/13] Add support for Archos G9 tablet Vicente

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