51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2019 IBM Corporation
|
|
* Author: Nayna Jain
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/of.h>
|
|
#include <asm/secure_boot.h>
|
|
|
|
static struct device_node *get_ppc_fw_sb_node(void)
|
|
{
|
|
static const struct of_device_id ids[] = {
|
|
{ .compatible = "ibm,secureboot", },
|
|
{ .compatible = "ibm,secureboot-v1", },
|
|
{ .compatible = "ibm,secureboot-v2", },
|
|
{},
|
|
};
|
|
|
|
return of_find_matching_node(NULL, ids);
|
|
}
|
|
|
|
bool is_ppc_secureboot_enabled(void)
|
|
{
|
|
struct device_node *node;
|
|
bool enabled = false;
|
|
|
|
node = get_ppc_fw_sb_node();
|
|
enabled = of_property_read_bool(node, "os-secureboot-enforcing");
|
|
|
|
of_node_put(node);
|
|
|
|
pr_info("Secure boot mode %s\n", enabled ? "enabled" : "disabled");
|
|
|
|
return enabled;
|
|
}
|
|
|
|
bool is_ppc_trustedboot_enabled(void)
|
|
{
|
|
struct device_node *node;
|
|
bool enabled = false;
|
|
|
|
node = get_ppc_fw_sb_node();
|
|
enabled = of_property_read_bool(node, "trusted-enabled");
|
|
|
|
of_node_put(node);
|
|
|
|
pr_info("Trusted boot mode %s\n", enabled ? "enabled" : "disabled");
|
|
|
|
return enabled;
|
|
}
|