app: fastboot: Invalidate cache contents before download
Before issuing usb read command invalidate the cache contents
for scratch memory otherwise usb read would be corrupted
Change-Id: I2a42c596d9ce18771548a882ad33cc5f222610d3
diff --git a/app/aboot/fastboot.c b/app/aboot/fastboot.c
index 9dac985..4dc955d 100644
--- a/app/aboot/fastboot.c
+++ b/app/aboot/fastboot.c
@@ -456,6 +456,10 @@
snprintf((char *)response, MAX_RSP_SIZE, "DATA%08x", len);
if (usb_if.usb_write(response, strlen((const char *)response)) < 0)
return;
+ /*
+ * Discard the cache contents before starting the download
+ */
+ arch_invalidate_cache_range((addr_t) download_base, sz);
r = usb_if.usb_read(download_base, len);
if ((r < 0) || ((unsigned) r != len)) {