efi_loader: Expose efi_install_configuration_table

We want to be able to add configuration table entries from our own code as
well as from EFI payload code. Export the boot service function internally
too, so that we can reuse it.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 13 insertions, 9 deletions

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 6c8d93b..51961d2 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -37,7 +37,7 @@ static bool efi_is_direct_boot = true;
  * In most cases we want to pass an FDT to the payload, so reserve one slot of
  * config table space for it. The pointer gets populated by do_bootefi_exec().
  */
-static struct efi_configuration_table EFI_RUNTIME_DATA efi_conf_table[1];
+static struct efi_configuration_table EFI_RUNTIME_DATA efi_conf_table[2];
 
 /*
  * The "gd" pointer lives in a register on ARM and AArch64 that we declare
@@ -376,31 +376,35 @@ static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol,
 	return EFI_EXIT(EFI_NOT_FOUND);
 }
 
-static efi_status_t EFIAPI efi_install_configuration_table(efi_guid_t *guid,
-							   void *table)
+efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table)
 {
 	int i;
 
-	EFI_ENTRY("%p, %p", guid, table);
-
 	/* Check for guid override */
 	for (i = 0; i < systab.nr_tables; i++) {
 		if (!guidcmp(guid, &efi_conf_table[i].guid)) {
 			efi_conf_table[i].table = table;
-			return EFI_EXIT(EFI_SUCCESS);
+			return EFI_SUCCESS;
 		}
 	}
 
 	/* No override, check for overflow */
 	if (i >= ARRAY_SIZE(efi_conf_table))
-		return EFI_EXIT(EFI_OUT_OF_RESOURCES);
+		return EFI_OUT_OF_RESOURCES;
 
 	/* Add a new entry */
 	memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid));
 	efi_conf_table[i].table = table;
 	systab.nr_tables = i;
 
-	return EFI_EXIT(EFI_SUCCESS);
+	return EFI_SUCCESS;
+}
+
+static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid,
+							       void *table)
+{
+	EFI_ENTRY("%p, %p", guid, table);
+	return EFI_EXIT(efi_install_configuration_table(guid, table));
 }
 
 static efi_status_t EFIAPI efi_load_image(bool boot_policy,
@@ -751,7 +755,7 @@ static const struct efi_boot_services efi_boot_services = {
 	.register_protocol_notify = efi_register_protocol_notify,
 	.locate_handle = efi_locate_handle,
 	.locate_device_path = efi_locate_device_path,
-	.install_configuration_table = efi_install_configuration_table,
+	.install_configuration_table = efi_install_configuration_table_ext,
 	.load_image = efi_load_image,
 	.start_image = efi_start_image,
 	.exit = efi_exit,