1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2019 IBM Corporation
6 #include <linux/types.h>
8 #include <asm/secure_boot.h>
10 static struct device_node *get_ppc_fw_sb_node(void)
12 static const struct of_device_id ids[] = {
13 { .compatible = "ibm,secureboot", },
14 { .compatible = "ibm,secureboot-v1", },
15 { .compatible = "ibm,secureboot-v2", },
19 return of_find_matching_node(NULL, ids);
22 bool is_ppc_secureboot_enabled(void)
24 struct device_node *node;
28 node = get_ppc_fw_sb_node();
29 enabled = of_property_read_bool(node, "os-secureboot-enforcing");
35 node = of_find_node_by_path("/");
36 if (!of_property_read_u32(node, "ibm,secure-boot", &secureboot))
37 enabled = (secureboot > 1);
41 pr_info("Secure boot mode %s\n", enabled ? "enabled" : "disabled");
46 bool is_ppc_trustedboot_enabled(void)
48 struct device_node *node;
52 node = get_ppc_fw_sb_node();
53 enabled = of_property_read_bool(node, "trusted-enabled");
59 node = of_find_node_by_path("/");
60 if (!of_property_read_u32(node, "ibm,trusted-boot", &trustedboot))
61 enabled = (trustedboot > 0);
65 pr_info("Trusted boot mode %s\n", enabled ? "enabled" : "disabled");