"devices" command prints all the uefi variables on the system. => efishell devices Device Name ============================================ /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b) /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/SD(0)/SD(0) /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/SD(0)/SD(0)/\ HD(2,MBR,0x086246ba,0x40800,0x3f800) /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/SD(0)/SD(0)/\ HD(1,MBR,0x086246ba,0x800,0x40000)
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- cmd/efishell.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 87 insertions(+), 1 deletion(-)
diff --git a/cmd/efishell.c b/cmd/efishell.c index 5819e52cf575..929b6343b1b2 100644 --- a/cmd/efishell.c +++ b/cmd/efishell.c @@ -18,6 +18,8 @@ #include <linux/ctype.h> #include <asm/global_data.h>
+static const struct efi_boot_services *bs; + static void dump_var_data(char *data, unsigned long len) { char *start, *end, *p; @@ -263,6 +265,84 @@ out: return ret; }
+static efi_handle_t *efi_get_handles_by_proto(efi_guid_t *guid) +{ + efi_handle_t *handles = NULL; + efi_uintn_t size = 0; + efi_status_t ret; + + if (guid) { + ret = bs->locate_handle(BY_PROTOCOL, guid, NULL, &size, + handles); + if (ret == EFI_BUFFER_TOO_SMALL) { + handles = calloc(1, size); + if (!handles) + return NULL; + + ret = bs->locate_handle(BY_PROTOCOL, guid, NULL, &size, + handles); + } + if (ret != EFI_SUCCESS) { + free(handles); + return NULL; + } + } else { + ret = bs->locate_handle(ALL_HANDLES, NULL, NULL, &size, NULL); + if (ret == EFI_BUFFER_TOO_SMALL) { + handles = calloc(1, size); + if (!handles) + return NULL; + + ret = bs->locate_handle(ALL_HANDLES, NULL, NULL, &size, + handles); + } + if (ret != EFI_SUCCESS) { + free(handles); + return NULL; + } + } + + return handles; +} + +static int efi_get_device_handle_info(efi_handle_t handle, u16 **name) +{ + struct efi_device_path *dp; + efi_status_t ret; + + ret = bs->open_protocol(handle, &efi_guid_device_path, + (void **)&dp, NULL /* FIXME */, NULL, + EFI_OPEN_PROTOCOL_GET_PROTOCOL); + if (ret == EFI_SUCCESS) { + *name = efi_dp_str(dp); + return 0; + } else { + return -1; + } +} + +static int do_efi_show_devices(int argc, char * const argv[]) +{ + efi_handle_t *handles = NULL, *handle; + u16 *devname; + + handles = efi_get_handles_by_proto(NULL); + if (!handles) + return CMD_RET_SUCCESS; + + printf("Device Name\n"); + printf("============================================\n"); + for (handle = handles; *handle; handle++) { + if (!efi_get_device_handle_info(*handle, &devname)) { + printf("%ls\n", devname); + efi_free_pool(devname); + } + handle++; + } + + return CMD_RET_SUCCESS; +} + static int do_efi_boot_add(int argc, char * const argv[]) { int id; @@ -625,6 +705,8 @@ static int do_efishell(cmd_tbl_t *cmdtp, int flag, if (argc < 2) return CMD_RET_USAGE;
+ bs = systab.boottime; + argc--; argv++; command = argv[0];
@@ -642,6 +724,8 @@ static int do_efishell(cmd_tbl_t *cmdtp, int flag, return do_efi_dump_var(argc, argv); else if (!strcmp(command, "setvar")) return do_efi_set_var(argc, argv); + else if (!strcmp(command, "devices")) + return do_efi_show_devices(argc, argv); else return CMD_RET_USAGE; } @@ -663,7 +747,9 @@ static char efishell_help_text[] = " - get uefi variable's value\n" "efishell setvar <name> [<value>]\n" " - set/delete uefi variable's value\n" - " <value> may be "="..."", "=0x..." (set) or "=" (delete)\n"; + " <value> may be "="..."", "=0x..." (set) or "=" (delete)\n" + "efishell devices\n" + " - show uefi devices\n"; #endif
U_BOOT_CMD(