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cmd: SCP03: enable and provision command

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Enable and provision the SCP03 keys on a TEE controlled secured elemt
from the U-Boot shell.

Executing this command will generate and program new SCP03 encryption
keys on the secure element NVM.

Depending on the TEE implementation, the keys would then be stored in
some persistent storage or better derived from some platform secret
(so they can't be lost).

Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Igor Opaniuk <igor.opaniuk@foundries.io>
This commit is contained in:
Jorge Ramirez-Ortiz 2021-02-14 16:27:24 +01:00 committed by Tom Rini
parent 166363f2ed
commit 26839e5dde
3 changed files with 63 additions and 0 deletions
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8
cmd/Kconfig
View file

@ -2022,6 +2022,14 @@ config HASH_VERIFY
help
Add -v option to verify data against a hash.
config CMD_SCP03
bool "scp03 - SCP03 enable and rotate/provision operations"
depends on SCP03
help
This command provides access to a Trusted Application
running in a TEE to request Secure Channel Protocol 03
(SCP03) enablement and/or rotation of its SCP03 keys.
config CMD_TPM_V1
bool

3
cmd/Makefile
View file

@ -193,6 +193,9 @@ obj-$(CONFIG_CMD_BLOB) += blob.o
# Android Verified Boot 2.0
obj-$(CONFIG_CMD_AVB) += avb.o
# Foundries.IO SCP03
obj-$(CONFIG_CMD_SCP03) += scp03.o
obj-$(CONFIG_ARM) += arm/
obj-$(CONFIG_RISCV) += riscv/
obj-$(CONFIG_SANDBOX) += sandbox/

52
cmd/scp03.c Normal file
View file

@ -0,0 +1,52 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2021, Foundries.IO
*
*/
#include <common.h>
#include <command.h>
#include <env.h>
#include <scp03.h>
int do_scp03_enable(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
if (argc != 1)
return CMD_RET_USAGE;
if (tee_enable_scp03()) {
printf("TEE failed to enable SCP03\n");
return CMD_RET_FAILURE;
}
printf("SCP03 is enabled\n");
return CMD_RET_SUCCESS;
}
int do_scp03_provision(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
if (argc != 1)
return CMD_RET_USAGE;
if (tee_provision_scp03()) {
printf("TEE failed to provision SCP03 keys\n");
return CMD_RET_FAILURE;
}
printf("SCP03 is provisioned\n");
return CMD_RET_SUCCESS;
}
static char text[] =
"provides a command to enable SCP03 and provision the SCP03 keys\n"
" enable - enable SCP03 on the TEE\n"
" provision - provision SCP03 on the TEE\n";
U_BOOT_CMD_WITH_SUBCMDS(scp03, "Secure Channel Protocol 03 control", text,
U_BOOT_SUBCMD_MKENT(enable, 1, 1, do_scp03_enable),
U_BOOT_SUBCMD_MKENT(provision, 1, 1, do_scp03_provision));