diff options
Diffstat (limited to 'drivers/crypto/ccp/psp-dev.h')
| -rw-r--r-- | drivers/crypto/ccp/psp-dev.h | 99 |
1 files changed, 81 insertions, 18 deletions
diff --git a/drivers/crypto/ccp/psp-dev.h b/drivers/crypto/ccp/psp-dev.h index 8a4de69399c5..268c83f298cb 100644 --- a/drivers/crypto/ccp/psp-dev.h +++ b/drivers/crypto/ccp/psp-dev.h @@ -14,6 +14,9 @@ #include <linux/list.h> #include <linux/bits.h> #include <linux/interrupt.h> +#include <linux/mutex.h> +#include <linux/psp.h> +#include <linux/psp-platform-access.h> #include "sp-dev.h" @@ -23,6 +26,30 @@ extern struct psp_device *psp_master; typedef void (*psp_irq_handler_t)(int, void *, unsigned int); +union psp_cap_register { + unsigned int raw; + struct { + unsigned int sev :1, + tee :1, + dbc_thru_ext :1, + sfs :1, + rsvd1 :3, + security_reporting :1, + fused_part :1, + rsvd2 :1, + debug_lock_on :1, + rsvd3 :2, + tsme_status :1, + rsvd4 :1, + anti_rollback_status :1, + rpmc_production_enabled :1, + rpmc_spirom_available :1, + hsp_tpm_available :1, + rom_armor_enforced :1, + rsvd5 :12; + }; +}; + struct psp_device { struct list_head entry; @@ -33,6 +60,7 @@ struct psp_device { struct sp_device *sp; void __iomem *io_regs; + struct mutex mailbox_mutex; psp_irq_handler_t sev_irq_handler; void *sev_irq_data; @@ -41,8 +69,9 @@ struct psp_device { void *tee_data; void *platform_access_data; void *dbc_data; + void *sfs_data; - unsigned int capability; + union psp_cap_register capability; }; void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler, @@ -51,24 +80,58 @@ void psp_clear_sev_irq_handler(struct psp_device *psp); struct psp_device *psp_get_master_device(void); -#define PSP_CAPABILITY_SEV BIT(0) -#define PSP_CAPABILITY_TEE BIT(1) -#define PSP_CAPABILITY_PSP_SECURITY_REPORTING BIT(7) +/** + * enum psp_cmd - PSP mailbox commands + * @PSP_CMD_TEE_RING_INIT: Initialize TEE ring buffer + * @PSP_CMD_TEE_RING_DESTROY: Destroy TEE ring buffer + * @PSP_CMD_TEE_EXTENDED_CMD: Extended command + * @PSP_CMD_MAX: Maximum command id + */ +enum psp_cmd { + PSP_CMD_TEE_RING_INIT = 1, + PSP_CMD_TEE_RING_DESTROY = 2, + PSP_CMD_TEE_EXTENDED_CMD = 14, + PSP_CMD_MAX = 15, +}; -#define PSP_CAPABILITY_PSP_SECURITY_OFFSET 8 -/* - * The PSP doesn't directly store these bits in the capability register - * but instead copies them from the results of query command. - * - * The offsets from the query command are below, and shifted when used. +int psp_mailbox_command(struct psp_device *psp, enum psp_cmd cmd, void *cmdbuff, + unsigned int timeout_msecs, unsigned int *cmdresp); + +/** + * struct psp_ext_req_buffer_hdr - Structure of the extended command header + * @payload_size: total payload size + * @sub_cmd_id: extended command ID + * @status: status of command execution (out) */ -#define PSP_SECURITY_FUSED_PART BIT(0) -#define PSP_SECURITY_DEBUG_LOCK_ON BIT(2) -#define PSP_SECURITY_TSME_STATUS BIT(5) -#define PSP_SECURITY_ANTI_ROLLBACK_STATUS BIT(7) -#define PSP_SECURITY_RPMC_PRODUCTION_ENABLED BIT(8) -#define PSP_SECURITY_RPMC_SPIROM_AVAILABLE BIT(9) -#define PSP_SECURITY_HSP_TPM_AVAILABLE BIT(10) -#define PSP_SECURITY_ROM_ARMOR_ENFORCED BIT(11) +struct psp_ext_req_buffer_hdr { + u32 payload_size; + u32 sub_cmd_id; + u32 status; +} __packed; + +struct psp_ext_request { + struct psp_ext_req_buffer_hdr header; + void *buf; +} __packed; + +/** + * enum psp_sub_cmd - PSP mailbox sub commands + * @PSP_SUB_CMD_DBC_GET_NONCE: Get nonce from DBC + * @PSP_SUB_CMD_DBC_SET_UID: Set UID for DBC + * @PSP_SUB_CMD_DBC_GET_PARAMETER: Get parameter from DBC + * @PSP_SUB_CMD_DBC_SET_PARAMETER: Set parameter for DBC + * @PSP_SUB_CMD_SFS_GET_FW_VERS: Get firmware versions for ASP and other MP + * @PSP_SUB_CMD_SFS_UPDATE: Command to load, verify and execute SFS package + */ +enum psp_sub_cmd { + PSP_SUB_CMD_DBC_GET_NONCE = PSP_DYNAMIC_BOOST_GET_NONCE, + PSP_SUB_CMD_DBC_SET_UID = PSP_DYNAMIC_BOOST_SET_UID, + PSP_SUB_CMD_DBC_GET_PARAMETER = PSP_DYNAMIC_BOOST_GET_PARAMETER, + PSP_SUB_CMD_DBC_SET_PARAMETER = PSP_DYNAMIC_BOOST_SET_PARAMETER, + PSP_SUB_CMD_SFS_GET_FW_VERS = PSP_SFS_GET_FW_VERSIONS, + PSP_SUB_CMD_SFS_UPDATE = PSP_SFS_UPDATE, +}; +int psp_extended_mailbox_cmd(struct psp_device *psp, unsigned int timeout_msecs, + struct psp_ext_request *req); #endif /* __PSP_DEV_H */ |