post_code: add post code for failure to load next stage

Add a new post code, POST_INVALID_ROM, used when coreboot fails to
locate or validate a resource that is stored in ROM.

BUG=b:124401932
BRANCH=sarien
TEST=build coreboot for sarien and arcada platforms

Change-Id: Ie6de6590595d8fcdc57ad156237fffa03d5ead38
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32770
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
diff --git a/src/lib/prog_loaders.c b/src/lib/prog_loaders.c
index 3b77712..a21663f 100644
--- a/src/lib/prog_loaders.c
+++ b/src/lib/prog_loaders.c
@@ -69,7 +69,8 @@
 
 fail:
 	if (CONFIG(BOOTBLOCK_CONSOLE))
-		die("Couldn't load romstage.\n");
+		die_with_post_code(POST_INVALID_ROM,
+				   "Couldn't load romstage.\n");
 	halt();
 }
 
@@ -162,7 +163,7 @@
 	prog_run(&ramstage);
 
 fail:
-	die("Ramstage was not loaded!\n");
+	die_with_post_code(POST_INVALID_ROM, "Ramstage was not loaded!\n");
 }
 
 #ifdef __RAMSTAGE__ // gc-sections should take care of this
@@ -195,13 +196,14 @@
 			break;
 		} /* else fall-through */
 	default:
-		die("Unsupported payload type.\n");
+		die_with_post_code(POST_INVALID_ROM,
+				   "Unsupported payload type.\n");
 		break;
 	}
 
 out:
 	if (prog_entry(payload) == NULL)
-		die("Payload not loaded.\n");
+		die_with_post_code(POST_INVALID_ROM, "Payload not loaded.\n");
 }
 
 void payload_run(void)