bootstd: Provide a bootmeth method to obtain state info
Some bootmeths can provide information about what is available to boot.
For example, VBE simple provides access to the firmware state.
Add a new method for this, along with a sandbox test.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/boot/bootmeth-uclass.c b/boot/bootmeth-uclass.c
index b8ba4ec..1e276c0 100644
--- a/boot/bootmeth-uclass.c
+++ b/boot/bootmeth-uclass.c
@@ -20,6 +20,16 @@
DECLARE_GLOBAL_DATA_PTR;
+int bootmeth_get_state_desc(struct udevice *dev, char *buf, int maxsize)
+{
+ const struct bootmeth_ops *ops = bootmeth_get_ops(dev);
+
+ if (!ops->get_state_desc)
+ return -ENOSYS;
+
+ return ops->get_state_desc(dev, buf, maxsize);
+}
+
int bootmeth_check(struct udevice *dev, struct bootflow_iter *iter)
{
const struct bootmeth_ops *ops = bootmeth_get_ops(dev);
diff --git a/boot/bootmeth_distro.c b/boot/bootmeth_distro.c
index 2b41e65..fea09b2 100644
--- a/boot/bootmeth_distro.c
+++ b/boot/bootmeth_distro.c
@@ -22,6 +22,19 @@
#include <mmc.h>
#include <pxe_utils.h>
+static int distro_get_state_desc(struct udevice *dev, char *buf, int maxsize)
+{
+ if (IS_ENABLED(CONFIG_SANDBOX)) {
+ int len;
+
+ len = snprintf(buf, maxsize, "OK");
+
+ return len + 1 < maxsize ? 0 : -ENOSPC;
+ }
+
+ return 0;
+}
+
static int disto_getfile(struct pxe_context *ctx, const char *file_path,
char *file_addr, ulong *sizep)
{
@@ -123,6 +136,7 @@
}
static struct bootmeth_ops distro_bootmeth_ops = {
+ .get_state_desc = distro_get_state_desc,
.check = distro_check,
.read_bootflow = distro_read_bootflow,
.read_file = bootmeth_common_read_file,