"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.akashi@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(