[PATCH v2 3/5] arm: qemu: implement enable_caches()

Ard Biesheuvel
2020-06-11T08:17:05Z

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>
---
board/emulation/qemu-arm/qemu-arm.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/board/emulation/qemu-arm/qemu-arm.c b/board/emulation/qemu-arm/qemu-arm.c
index 69e8ef46f1f5..1b0d543b93c1 100644
--- 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>
--
2.26.2