arm: qemu: implement enable_caches()

Add an override for enable_caches to enable the I and D caches, along
with the cached 1:1 mapping of all of DRAM. This is needed for running
U-Boot under virtualization with QEMU/kvm.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>

diff --git a/board/emulation/qemu-arm/qemu-arm.c b/board/emulation/qemu-arm/qemu-arm.c
index 69e8ef46f1f5fba3e003abb833346e29a53daf87..1b0d543b93c191d4b8de0a7f9496c94c92d5e1c2 100644 (file)
--- a/board/emulation/qemu-arm/qemu-arm.c
+++ b/board/emulation/qemu-arm/qemu-arm.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <cpu_func.h>
 #include <dm.h>
 #include <fdtdec.h>
 #include <init.h>
@@ -94,6 +95,12 @@ void *board_fdt_blob_setup(void)
        return (void *)CONFIG_SYS_SDRAM_BASE;
 }
 
+void enable_caches(void)
+{
+        icache_enable();
+        dcache_enable();
+}
+
 #if defined(CONFIG_EFI_RNG_PROTOCOL)
 #include <efi_loader.h>
 #include <efi_rng.h>