"drivers" command prints all the uefi drivers on the system.
=> efi drivers
D
r
v Driver Name Image Path
================ ==================== ==========
7ef31d30 EFI block driver <built-in>
Signed-off-by: AKASHI Takahiro <takahiro.aka...@linaro.org>
---
cmd/efitool.c | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 83 insertions(+), 1 deletion(-)
diff --git a/cmd/efitool.c b/cmd/efitool.c
index 6b2df1beedb5..4d46721fbf91 100644
--- a/cmd/efitool.c
+++ b/cmd/efitool.c
@@ -8,6 +8,7 @@
#include <charset.h>
#include <common.h>
#include <command.h>
+#include <efi_driver.h>
#include <efi_loader.h>
#include <environment.h>
#include <errno.h>
@@ -16,6 +17,7 @@
#include <malloc.h>
#include <search.h>
#include <linux/ctype.h>
+#include <linux/kernel.h>
#include <asm/global_data.h>
#define BS systab.boottime
@@ -358,6 +360,82 @@ static int do_efi_show_devices(int argc, char * const
argv[])
return CMD_RET_SUCCESS;
}
+static int efi_get_driver_handle_info(efi_handle_t handle, u16 **name,
+ u16 **devname, u16 **filename)
+{
+ struct efi_handler *handler;
+ struct efi_driver_binding_extended_protocol *bp;
+ efi_status_t ret;
+
+ ret = efi_search_protocol(handle, &efi_guid_driver_binding_protocol,
+ &handler);
+ if (ret != EFI_SUCCESS)
+ return -1;
+ bp = handler->protocol_interface;
+
+ *name = malloc((strlen(bp->name) + 1) * sizeof(u16));
+ if (*name)
+ ascii2unicode(*name, bp->name);
+
+ /*
+ * TODO:
+ * handle image->device_handle,
+ * use append_device_path()
+ */
+ *devname = NULL;
+ *filename = NULL;
+
+ return 0;
+}
+
+static int do_efi_show_drivers(int argc, char * const argv[])
+{
+ efi_handle_t *handles = NULL, *handle;
+ efi_uintn_t size = 0;
+ u16 *drvname, *devname, *filename;
+ efi_status_t ret;
+ int i;
+
+ ret = BS->locate_handle(BY_PROTOCOL, &efi_guid_driver_binding_protocol,
+ NULL, &size, NULL);
+ if (ret == EFI_BUFFER_TOO_SMALL) {
+ handles = calloc(1, size);
+ if (!handles)
+ return CMD_RET_FAILURE;
+
+ ret = BS->locate_handle(BY_PROTOCOL,
+ &efi_guid_driver_binding_protocol,
+ NULL, &size, handles);
+ }
+ if (ret != EFI_SUCCESS) {
+ free(handles);
+ return CMD_RET_FAILURE;
+ }
+
+ printf("D\n");
+ printf("r\n");
+ printf("v Driver Name Image Path\n");
+ printf("================ ==================== ==========\n");
+ handle = handles;
+ for (i = 0; i < size / sizeof(*handle); i++) {
+ if (!efi_get_driver_handle_info(*handle, &drvname, &devname,
+ &filename)) {
+ if (filename)
+ printf("%16p %-20ls %ls/%ls\n",
+ *handle, drvname, devname, filename);
+ else
+ printf("%16p %-20ls <built-in>\n",
+ *handle, drvname);
+ free(drvname);
+ free(devname);
+ free(filename);
+ }
+ handle++;
+ }
+
+ return CMD_RET_SUCCESS;
+}
+
static int do_efi_boot_add(int argc, char * const argv[])
{
int id;
@@ -767,6 +845,8 @@ static int do_efitool(cmd_tbl_t *cmdtp, int flag,
return do_efi_set_var(argc, argv);
else if (!strcmp(command, "devices"))
return do_efi_show_devices(argc, argv);
+ else if (!strcmp(command, "drivers"))
+ return do_efi_show_drivers(argc, argv);
else
return CMD_RET_USAGE;
}
@@ -793,7 +873,9 @@ static char efitool_help_text[] =
" - set/delete uefi variable's value\n"
" <value> may be \"=\"...\"\", \"=0x...\", \"=H...\", (set) or \"=\"
(delete)\n"
"efitool devices\n"
- " - show uefi devices\n";
+ " - show uefi devices\n"
+ "efitool drivers\n"
+ " - show uefi drivers\n";
#endif
U_BOOT_CMD(
--
2.19.1
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