sandbox: efi_loader: Correct use of addresses as pointers

The cache-flush function is incorrect which causes a crash in the
remoteproc tests with arm64.

Fix both problems by using map_sysmem() to convert an address to a
pointer and map_to_sysmem() to convert a pointer to an address.

Also update the image-loader's cache-flushing logic.

Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 3286d223fd7 ("sandbox: implement invalidate_icache_all()")
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

Changes in v6:
- Re-introduce

Changes in v2:
- Drop message about EFI_LOADER

arch/sandbox/cpu/cache.c              |  8 +++++++-
 drivers/remoteproc/rproc-elf-loader.c | 18 +++++++++++-------
 lib/efi_loader/efi_image_loader.c     |  3 ++-
 3 files changed, 20 insertions(+), 9 deletions(-)

Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

1 files changed, 7 insertions, 1 deletions

diff --git a/arch/sandbox/cpu/cache.c b/arch/sandbox/cpu/cache.c
index c8a5e64214b..96b3da47e8e 100644
--- a/arch/sandbox/cpu/cache.c
+++ b/arch/sandbox/cpu/cache.c
@@ -4,12 +4,18 @@
  */
 
 #include <cpu_func.h>
+#include <mapmem.h>
 #include <asm/state.h>
 
 void flush_cache(unsigned long addr, unsigned long size)
 {
+	void *ptr;
+
+	ptr = map_sysmem(addr, size);
+
 	/* Clang uses (char *) parameters, GCC (void *) */
-	__builtin___clear_cache((void *)addr, (void *)(addr + size));
+	__builtin___clear_cache(map_sysmem(addr, size), ptr + size);
+	unmap_sysmem(ptr);
 }
 
 void invalidate_icache_all(void)