[U-Boot] [PATCH] armv7m: disable icache before linux booting

[U-Boot] [PATCH] armv7m: disable icache before linux booting

[Patrice Chotard]

Similarly to ARMV7, on ARMV7M instruction cache memory needs
to be disabled before running linux kernel to avoid kernel to
be stuck.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
---

 arch/arm/cpu/armv7m/cpu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/cpu/armv7m/cpu.c b/arch/arm/cpu/armv7m/cpu.c
index a424babde547..29597750f8be 100644
--- a/arch/arm/cpu/armv7m/cpu.c
+++ b/arch/arm/cpu/armv7m/cpu.c
@@ -37,6 +37,9 @@ int cleanup_before_linux(void)
 	 * dcache flushing and disabling dcache */
 	invalidate_dcache_all();
 
+	icache_disable();
+	invalidate_icache_all();
+
 	return 0;
 }
 
-- 
1.9.1

[U-Boot] armv7m: disable icache before linux booting

[Tom Rini]

On Fri, Mar 30, 2018 at 09:22:40AM +0200, Patrice Chotard wrote:

> Similarly to ARMV7, on ARMV7M instruction cache memory needs
> to be disabled before running linux kernel to avoid kernel to
> be stuck.
> 
> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Applied to u-boot/master, thanks!

-- 
Tom
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