Orange Pi5 kernel

// 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;
<------>u32 secureboot;
 
<------>node = get_ppc_fw_sb_node();
<------>enabled = of_property_read_bool(node, "os-secureboot-enforcing");
<------>of_node_put(node);
 
<------>if (enabled)
<------><------>goto out;
 
<------>if (!of_property_read_u32(of_root, "ibm,secure-boot", &secureboot))
<------><------>enabled = (secureboot > 1);
 
out:
<------>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;
<------>u32 trustedboot;
 
<------>node = get_ppc_fw_sb_node();
<------>enabled = of_property_read_bool(node, "trusted-enabled");
<------>of_node_put(node);
 
<------>if (enabled)
<------><------>goto out;
 
<------>if (!of_property_read_u32(of_root, "ibm,trusted-boot", &trustedboot))
<------><------>enabled = (trustedboot > 0);
 
out:
<------>pr_info("Trusted boot mode %s\n", enabled ? "enabled" : "disabled");
 
<------>return enabled;
}