diff options
Diffstat (limited to 'cmd/vbe.c')
-rw-r--r-- | cmd/vbe.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/cmd/vbe.c b/cmd/vbe.c new file mode 100644 index 0000000000..a5737edc04 --- /dev/null +++ b/cmd/vbe.c @@ -0,0 +1,87 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Verified Boot for Embedded (VBE) command + * + * Copyright 2022 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#include <common.h> +#include <bootmeth.h> +#include <bootstd.h> +#include <command.h> +#include <vbe.h> + +static int do_vbe_list(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + vbe_list(); + + return 0; +} + +static int do_vbe_select(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct bootstd_priv *std; + struct udevice *dev; + int ret; + + ret = bootstd_get_priv(&std); + if (ret) + return CMD_RET_FAILURE; + if (argc < 2) { + std->vbe_bootmeth = NULL; + return 0; + } + if (vbe_find_by_any(argv[1], &dev)) + return CMD_RET_FAILURE; + + std->vbe_bootmeth = dev; + + return 0; +} + +static int do_vbe_info(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct bootstd_priv *std; + char buf[256]; + int ret, len; + + ret = bootstd_get_priv(&std); + if (ret) + return CMD_RET_FAILURE; + if (!std->vbe_bootmeth) { + printf("No VBE bootmeth selected\n"); + return CMD_RET_FAILURE; + } + ret = bootmeth_get_state_desc(std->vbe_bootmeth, buf, sizeof(buf)); + if (ret) { + printf("Failed (err=%d)\n", ret); + return CMD_RET_FAILURE; + } + len = strnlen(buf, sizeof(buf)); + if (len >= sizeof(buf)) { + printf("Buffer overflow\n"); + return CMD_RET_FAILURE; + } + + puts(buf); + if (buf[len] != '\n') + putc('\n'); + + return 0; +} + +#ifdef CONFIG_SYS_LONGHELP +static char vbe_help_text[] = + "list - list VBE bootmeths\n" + "vbe select - select a VBE bootmeth by sequence or name\n" + "vbe info - show information about a VBE bootmeth"; +#endif + +U_BOOT_CMD_WITH_SUBCMDS(vbe, "Verified Boot for Embedded", vbe_help_text, + U_BOOT_SUBCMD_MKENT(list, 1, 1, do_vbe_list), + U_BOOT_SUBCMD_MKENT(select, 2, 1, do_vbe_select), + U_BOOT_SUBCMD_MKENT(info, 2, 1, do_vbe_info)); |