From: Alexander Stein <alexanders83@web.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/5] arm1176/cpu: Match cache_flush to arm1136
Date: Sat, 4 Jul 2015 11:48:40 +0200 [thread overview]
Message-ID: <1436003324-8769-2-git-send-email-alexanders83@web.de> (raw)
In-Reply-To: <1436003324-8769-1-git-send-email-alexanders83@web.de>
This is effectively the same code but it also does a clean cache before
invalidating and doing a memory barrier.
Signed-off-by: Alexander Stein <alexanders83@web.de>
---
arch/arm/cpu/arm1176/cpu.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/arm/cpu/arm1176/cpu.c b/arch/arm/cpu/arm1176/cpu.c
index 2d81651..24b5cc7 100644
--- a/arch/arm/cpu/arm1176/cpu.c
+++ b/arch/arm/cpu/arm1176/cpu.c
@@ -41,11 +41,13 @@ int cleanup_before_linux (void)
return 0;
}
-/* flush I/D-cache */
-static void cache_flush (void)
+static void cache_flush(void)
{
+ unsigned long i = 0;
+ /* clean entire data cache */
+ asm volatile("mcr p15, 0, %0, c7, c10, 0" : : "r" (i));
/* invalidate both caches and flush btb */
- asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (0));
+ asm volatile("mcr p15, 0, %0, c7, c7, 0" : : "r" (i));
/* mem barrier to sync things */
- asm ("mcr p15, 0, %0, c7, c10, 4": :"r" (0));
+ asm volatile("mcr p15, 0, %0, c7, c10, 4" : : "r" (i));
}
--
2.4.5
next prev parent reply other threads:[~2015-07-04 9:48 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-04 9:48 [U-Boot] [PATCH 0/5] dcache support for Raspberry Pi 1 Alexander Stein
2015-07-04 9:48 ` Alexander Stein [this message]
2015-07-11 5:20 ` [U-Boot] [PATCH 1/5] arm1176/cpu: Match cache_flush to arm1136 Stephen Warren
2015-07-12 7:23 ` Alexander Stein
2015-07-04 9:48 ` [U-Boot] [PATCH 2/5] arm1176/cpu: Add icache and dcache support Alexander Stein
2015-07-11 5:21 ` Stephen Warren
2015-07-12 7:26 ` Alexander Stein
2015-07-14 4:57 ` Stephen Warren
2015-07-04 9:48 ` [U-Boot] [PATCH 3/5] arm1176/cpu: Align cache flushing addresses to cacheline size Alexander Stein
2015-07-11 5:21 ` Stephen Warren
2015-07-04 9:48 ` [U-Boot] [PATCH 4/5] arm/mach-bcm283x/mbox: Flush and invalidate dcache when using fw mailbox Alexander Stein
2015-07-11 5:24 ` Stephen Warren
2015-07-04 9:48 ` [U-Boot] [PATCH 5/5] arm/rpi: Enable dcache Alexander Stein
2015-07-11 5:24 ` Stephen Warren
2015-07-12 7:30 ` Alexander Stein
2015-07-14 4:57 ` Stephen Warren
2015-07-06 7:39 ` [U-Boot] [PATCH 0/5] dcache support for Raspberry Pi 1 Albert ARIBAUD
2015-07-06 18:24 ` Alexander Stein
2015-07-06 21:26 ` Albert ARIBAUD
2015-07-08 18:15 ` Alexander Stein
2015-07-08 22:47 ` Albert ARIBAUD
2015-07-11 5:17 ` Stephen Warren
2015-07-12 8:10 ` Alexander Stein
2015-07-14 5:02 ` Stephen Warren
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