arm: mach-omap2: Flush cache after FIT post-processing image
After we authenticate/decrypt an image we need to flush the caches
as they may still contain bits of the encrypted image. This will
cause failures if we attempt to jump to this image.
Reported-by: Yogesh Siraswar<yogeshs@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-omap2/sec-common.c b/arch/arm/mach-omap2/sec-common.c
index c5a000a..0fa8db0 100644
--- a/arch/arm/mach-omap2/sec-common.c
+++ b/arch/arm/mach-omap2/sec-common.c
@@ -120,6 +120,12 @@
result = secure_rom_call(
API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX, 0, 0,
4, cert_addr, cert_size, sig_addr, 0xFFFFFFFF);
+
+ /* Perform cache writeback on output buffer */
+ flush_dcache_range(
+ (u32)*image,
+ (u32)*image + roundup(*size, ARCH_DMA_MINALIGN));
+
auth_exit:
if (result != 0) {
printf("Authentication failed!\n");