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// SPDX-License-Identifier: GPL-2.0+
/*
* Verified Boot for Embedded (VBE) command
*
* Copyright 2022 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#include <bloblist.h>
#include <bootmeth.h>
#include <bootstd.h>
#include <command.h>
#include <spl.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;
}
static int do_vbe_state(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct vbe_handoff *handoff = NULL;
int i;
if (IS_ENABLED(CONFIG_BLOBLIST)) {
handoff = bloblist_find(BLOBLISTT_VBE,
sizeof(struct vbe_handoff));
}
if (!handoff) {
printf("No VBE state\n");
return CMD_RET_FAILURE;
}
printf("Phases:");
for (i = PHASE_NONE; i < PHASE_COUNT; i++) {
if (handoff->phases & (1 << i))
printf(" %s", spl_phase_name(i));
}
if (!handoff->phases)
printf(" (none)");
printf("\n");
return 0;
}
U_BOOT_LONGHELP(vbe,
"list - list VBE bootmeths\n"
"vbe select - select a VBE bootmeth by sequence or name\n"
"vbe info - show information about a VBE bootmeth\n"
"vbe state - show VBE state");
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(state, 2, 1, do_vbe_state),
U_BOOT_SUBCMD_MKENT(info, 2, 1, do_vbe_info));
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