[PATCH v4 2/4] bootflow: bootmeth_efi: set bflow->fname from bootfile name

[Shantur Rathore]

We need to set boot->fname before calling efi_set_bootdev
otherwise this crashes as bflow->fname is null.

Reviewed-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Shantur Rathore <i at shantur.com>
---

(no changes since v1)

 boot/bootmeth_efi.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/boot/bootmeth_efi.c b/boot/bootmeth_efi.c
index 682cf5b23b..fd224f7c91 100644
--- a/boot/bootmeth_efi.c
+++ b/boot/bootmeth_efi.c
@@ -323,7 +323,7 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow)
 	char file_addr[17], fname[256];
 	char *tftp_argv[] = {"tftp", file_addr, fname, NULL};
 	struct cmd_tbl cmdtp = {};	/* dummy */
-	const char *addr_str, *fdt_addr_str;
+	const char *addr_str, *fdt_addr_str, *bootfile_name;
 	int ret, arch, size;
 	ulong addr, fdt_addr;
 	char str[36];
@@ -360,6 +360,12 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow)
 		return log_msg_ret("sz", -EINVAL);
 	bflow->size = size;
 
+    /* bootfile should be setup by dhcp*/
+	bootfile_name = env_get("bootfile");
+	if (!bootfile_name)
+		return log_msg_ret("bootfile_name", ret);
+	bflow->fname = strdup(bootfile_name);
+
 	/* do the hideous EFI hack */
 	efi_set_bootdev("Net", "", bflow->fname, map_sysmem(addr, 0),
 			bflow->size);
-- 
2.40.1