From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Sun, 16 Jun 2024 17:31:04 +0000 (+0200)
Subject: arm: implement invalidate_icache_all on ARM11
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=2da287ad13e1b488c1c39afc4721d733d6b83cd7;p=u-boot.git

arm: implement invalidate_icache_all on ARM11

In EFI sub-system we rely on invalidate_icache_all() to invalidate the
instruction cache after loading binaries. Add the missing implementation on
ARM1136, ARM1176.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
---

diff --git a/arch/arm/cpu/arm11/cpu.c b/arch/arm/cpu/arm11/cpu.c
index 1e16b89d00..d092c58b52 100644
--- a/arch/arm/cpu/arm11/cpu.c
+++ b/arch/arm/cpu/arm11/cpu.c
@@ -117,3 +117,15 @@ void enable_caches(void)
 #endif
 }
 #endif
+
+#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
+/* Invalidate entire I-cache */
+void invalidate_icache_all(void)
+{
+	unsigned long i = 0;
+
+	asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i));
+}
+#else
+void invalidate_icache_all(void) {}
+#endif