120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Verified Boot for Embedded (VBE) command
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*
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* Copyright 2022 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <bloblist.h>
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#include <bootmeth.h>
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#include <bootstd.h>
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#include <command.h>
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#include <spl.h>
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#include <vbe.h>
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static int do_vbe_list(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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vbe_list();
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return 0;
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}
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static int do_vbe_select(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct bootstd_priv *std;
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struct udevice *dev;
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int ret;
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ret = bootstd_get_priv(&std);
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if (ret)
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return CMD_RET_FAILURE;
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if (argc < 2) {
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std->vbe_bootmeth = NULL;
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return 0;
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}
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if (vbe_find_by_any(argv[1], &dev))
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return CMD_RET_FAILURE;
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std->vbe_bootmeth = dev;
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return 0;
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}
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static int do_vbe_info(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct bootstd_priv *std;
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char buf[256];
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int ret, len;
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ret = bootstd_get_priv(&std);
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if (ret)
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return CMD_RET_FAILURE;
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if (!std->vbe_bootmeth) {
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printf("No VBE bootmeth selected\n");
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return CMD_RET_FAILURE;
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}
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ret = bootmeth_get_state_desc(std->vbe_bootmeth, buf, sizeof(buf));
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if (ret) {
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printf("Failed (err=%d)\n", ret);
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return CMD_RET_FAILURE;
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}
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len = strnlen(buf, sizeof(buf));
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if (len >= sizeof(buf)) {
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printf("Buffer overflow\n");
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return CMD_RET_FAILURE;
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}
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puts(buf);
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if (buf[len] != '\n')
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putc('\n');
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return 0;
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}
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static int do_vbe_state(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct vbe_handoff *handoff = NULL;
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int i;
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if (IS_ENABLED(CONFIG_BLOBLIST)) {
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handoff = bloblist_find(BLOBLISTT_VBE,
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sizeof(struct vbe_handoff));
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}
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if (!handoff) {
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printf("No VBE state\n");
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return CMD_RET_FAILURE;
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}
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printf("Phases:");
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for (i = PHASE_NONE; i < PHASE_COUNT; i++) {
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if (handoff->phases & (1 << i))
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printf(" %s", spl_phase_name(i));
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}
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if (!handoff->phases)
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printf(" (none)");
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printf("\n");
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return 0;
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}
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#ifdef CONFIG_SYS_LONGHELP
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static char vbe_help_text[] =
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"list - list VBE bootmeths\n"
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"vbe select - select a VBE bootmeth by sequence or name\n"
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"vbe info - show information about a VBE bootmeth\n"
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"vbe state - show VBE state";
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#endif
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U_BOOT_CMD_WITH_SUBCMDS(vbe, "Verified Boot for Embedded", vbe_help_text,
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U_BOOT_SUBCMD_MKENT(list, 1, 1, do_vbe_list),
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U_BOOT_SUBCMD_MKENT(select, 2, 1, do_vbe_select),
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U_BOOT_SUBCMD_MKENT(state, 2, 1, do_vbe_state),
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U_BOOT_SUBCMD_MKENT(info, 2, 1, do_vbe_info));
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