[PATCH 7/9] x86: boot: Correct display of kernel version

[Simon Glass]

The address of the bzImage is not recorded in the bootflow, so we cannot
actually locate the version at present. Handle this case, to avoid
showing invalid data.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/x86/lib/zimage.c | 13 ++++++++-----
 cmd/bootflow.c        |  2 ++
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index 3b8960cfbc4..3e1d6f44239 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -549,7 +549,6 @@ void zimage_dump(struct bootm_info *bmi, struct boot_params *base_ptr,
 		 bool show_cmdline)
 {
 	struct setup_header *hdr;
-	const char *version;
 
 	printf("Setup located at %p:\n\n", base_ptr);
 	print_num64("ACPI RSDP addr", base_ptr->acpi_rsdp_addr);
@@ -576,10 +575,14 @@ void zimage_dump(struct bootm_info *bmi, struct boot_params *base_ptr,
 	print_num("Real mode switch", hdr->realmode_swtch);
 	print_num("Start sys seg", hdr->start_sys_seg);
 	print_num("Kernel version", hdr->kernel_version);
-	version = zimage_get_kernel_version(base_ptr,
-					    (void *)bmi->bzimage_addr);
-	if (version)
-		printf("   @%p: %s\n", version, version);
+	if (bmi->bzimage_addr) {
+		const char *version;
+
+		version = zimage_get_kernel_version(base_ptr,
+						    (void *)bmi->bzimage_addr);
+		if (version)
+			printf("   @%p: %s\n", version, version);
+	}
 	print_num("Type of loader", hdr->type_of_loader);
 	show_loader(hdr);
 	print_num("Load flags", hdr->loadflags);
diff --git a/cmd/bootflow.c b/cmd/bootflow.c
index b79421496d6..b76daf9cc0d 100644
--- a/cmd/bootflow.c
+++ b/cmd/bootflow.c
@@ -401,6 +401,8 @@ static int do_bootflow_info(struct cmd_tbl *cmdtp, int flag, int argc,
 		struct bootm_info bmi;
 
 		bootm_init(&bmi);
+		/* we don't know this at present */
+		bootm_x86_set(&bmi, bzimage_addr, 0);
 		zimage_dump(&bmi, bflow->x86_setup, false);
 
 		return 0;
-- 
2.43.0