amd/cezanne: verify transfer buffer in bootblock

Verify if transfer buffer is valid before progressing further to catch
invalid transfer buffer early.

Signed-off-by: Kangheui Won <khwon@chromium.org>
Change-Id: I4c470b156944b50e581dcdee47b196f46b0993f3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52965
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/cezanne/bootblock.c

@@ -11,6 +11,7 @@
 #include <cpu/x86/tsc.h>
 #include <soc/iomap.h>
 #include <soc/southbridge.h>
+#include <soc/psp_transfer.h>
 #include <stdint.h>
 
 /*
@@ -110,5 +111,11 @@ void bootblock_soc_init(void)
 {
 	u32 val = cpuid_eax(1);
 	printk(BIOS_DEBUG, "Family_Model: %08x\n", val);
+
+	if (CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK)) {
+		verify_psp_transfer_buf();
+		show_psp_transfer_info();
+	}
+
 	fch_early_init();
 }