From: Patrice Chotard <patrice.chotard@st.com>
Date: Fri, 30 Mar 2018 07:22:40 +0000 (+0200)
Subject: armv7m: disable icache before linux booting
X-Git-Tag: v2018.05-rc2~40
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d409c962169bd293e39386d0ddfa64d5222a3be4;p=platform%2Fkernel%2Fu-boot.git

armv7m: disable icache before linux booting

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>
---

diff --git a/arch/arm/cpu/armv7m/cpu.c b/arch/arm/cpu/armv7m/cpu.c
index a424bab..2959775 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;
 }