[PATCH v2] bootstd: Make efi_mgr bootmeth work for non-sandbox setups

[Mark Kettenis]

Enable the bootflow based on this bootmeth if the BootOrder EFI
variable is set.

Signed-off-by: Mark Kettenis <kette...@openbsd.org>
---

ChangeLog:

v2: - Initialize EFI subsystem to populate EFI variables


 boot/bootmeth_efi_mgr.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/boot/bootmeth_efi_mgr.c b/boot/bootmeth_efi_mgr.c
index e9d973429f..e6c42d41fb 100644
--- a/boot/bootmeth_efi_mgr.c
+++ b/boot/bootmeth_efi_mgr.c
@@ -14,6 +14,8 @@
 #include <bootmeth.h>
 #include <command.h>
 #include <dm.h>
+#include <efi_loader.h>
+#include <efi_variable.h>
 
 /**
  * struct efi_mgr_priv - private info for the efi-mgr driver
@@ -46,13 +48,26 @@ static int efi_mgr_check(struct udevice *dev, struct 
bootflow_iter *iter)
 static int efi_mgr_read_bootflow(struct udevice *dev, struct bootflow *bflow)
 {
        struct efi_mgr_priv *priv = dev_get_priv(dev);
+       efi_status_t ret;
+       efi_uintn_t size;
+       u16 *bootorder;
 
        if (priv->fake_dev) {
                bflow->state = BOOTFLOWST_READY;
                return 0;
        }
 
-       /* To be implemented */
+       ret = efi_init_obj_list();
+       if (ret)
+               return log_msg_ret("init", ret);
+
+       /* Enable this method if the "BootOrder" UEFI exists. */
+       bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid,
+                               &size);
+       if (bootorder) {
+               bflow->state = BOOTFLOWST_READY;
+               return 0;
+       }
 
        return -EINVAL;
 }
-- 
2.42.0