83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AMD Platform Security Processor (PSP) interface driver
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*
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* Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
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*
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* Author: Brijesh Singh <brijesh.singh@amd.com>
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*/
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#ifndef __PSP_DEV_H__
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#define __PSP_DEV_H__
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/bits.h>
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#include <linux/interrupt.h>
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#include "sp-dev.h"
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#define PSP_CMDRESP_RESP BIT(31)
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#define PSP_CMDRESP_ERR_MASK 0xffff
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#define MAX_PSP_NAME_LEN 16
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extern struct psp_device *psp_master;
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typedef void (*psp_irq_handler_t)(int, void *, unsigned int);
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struct psp_device {
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struct list_head entry;
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struct psp_vdata *vdata;
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char name[MAX_PSP_NAME_LEN];
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struct device *dev;
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struct sp_device *sp;
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void __iomem *io_regs;
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psp_irq_handler_t sev_irq_handler;
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void *sev_irq_data;
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psp_irq_handler_t tee_irq_handler;
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void *tee_irq_data;
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void *sev_data;
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void *tee_data;
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unsigned int capability;
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};
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void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
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void *data);
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void psp_clear_sev_irq_handler(struct psp_device *psp);
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void psp_set_tee_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
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void *data);
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void psp_clear_tee_irq_handler(struct psp_device *psp);
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struct psp_device *psp_get_master_device(void);
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#define PSP_CAPABILITY_SEV BIT(0)
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#define PSP_CAPABILITY_TEE BIT(1)
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#define PSP_CAPABILITY_PSP_SECURITY_REPORTING BIT(7)
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#define PSP_CAPABILITY_PSP_SECURITY_OFFSET 8
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/*
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* The PSP doesn't directly store these bits in the capability register
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* but instead copies them from the results of query command.
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*
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* The offsets from the query command are below, and shifted when used.
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*/
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#define PSP_SECURITY_FUSED_PART BIT(0)
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#define PSP_SECURITY_DEBUG_LOCK_ON BIT(2)
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#define PSP_SECURITY_TSME_STATUS BIT(5)
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#define PSP_SECURITY_ANTI_ROLLBACK_STATUS BIT(7)
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#define PSP_SECURITY_RPMC_PRODUCTION_ENABLED BIT(8)
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#define PSP_SECURITY_RPMC_SPIROM_AVAILABLE BIT(9)
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#define PSP_SECURITY_HSP_TPM_AVAILABLE BIT(10)
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#define PSP_SECURITY_ROM_ARMOR_ENFORCED BIT(11)
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#endif /* __PSP_DEV_H */
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