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From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Subject: [RFC PATCH 2/6] dirty hack, fixme: disable mmu_cache_flush in arch/arm/cpu/start.c for Tegra
Date: Thu, 29 Sep 2011 18:04:32 +0400	[thread overview]
Message-ID: <1317305076-3334-3-git-send-email-antonynpavlov@gmail.com> (raw)
In-Reply-To: <1317305076-3334-1-git-send-email-antonynpavlov@gmail.com>

Initial Tegra support has no initialisation routines, so
it can't initialise the caches in the right way.

MMU & cache code in arch/arm/cpu/start.c hangs up a Tegra-based system.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 arch/arm/cpu/start.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
index f8eb0a9..69fb5b0 100644
--- a/arch/arm/cpu/start.c
+++ b/arch/arm/cpu/start.c
@@ -74,6 +74,8 @@ void __naked __bare_init reset(void)
 #ifdef CONFIG_ARCH_HAS_LOWLEVEL_INIT
 	arch_init_lowlevel();
 #endif
+
+#ifndef CONFIG_ARCH_TEGRA
 	__asm__ __volatile__ (
 		"bl __mmu_cache_flush;"
 		:
@@ -89,6 +91,7 @@ void __naked __bare_init reset(void)
 	r |= CR_B;
 #endif
 	set_cr(r);
+#endif
 
 #ifdef CONFIG_MACH_DO_LOWLEVEL_INIT
 	board_init_lowlevel();
-- 
1.7.6.3


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  parent reply	other threads:[~2011-09-29 14:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-29 14:04 [RFC PATCH 0/6] ARM: initial Tegra support Antony Pavlov
2011-09-29 14:04 ` [RFC PATCH 1/6] " Antony Pavlov
2011-09-29 14:04 ` Antony Pavlov [this message]
2011-10-06 11:07   ` [RFC PATCH 2/6] dirty hack, fixme: disable mmu_cache_flush in arch/arm/cpu/start.c for Tegra Sascha Hauer
2011-09-29 14:04 ` [RFC PATCH 3/6] ARM: Tegra: add Toshiba AC100 support Antony Pavlov
2011-09-29 14:04 ` [RFC PATCH 4/6] arm: cpuinfo: Cortex-A9 dirty hack Antony Pavlov
2011-10-06 11:04   ` Sascha Hauer
2011-10-06 18:32     ` Antony Pavlov
2011-09-29 14:04 ` [RFC PATCH 5/6] toshiba-ac100: add USB host support Antony Pavlov
2011-10-06 11:05   ` Sascha Hauer
2011-09-29 14:04 ` [RFC PATCH 6/6] toshiba-ac100_defconfig update: enable USB-related stuff Antony Pavlov
2011-10-06 11:06   ` Sascha Hauer

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