mfd: cros_ec: Add Management API entry points (2f2e6d14) · Commits · 戴 / test

include/linux/mfd/cros_ec_commands.h

+113 −0

Original line number	Diff line number	Diff line
		@@ -5176,6 +5176,119 @@ struct ec_params_set_cbi {
		uint8_t data[]; /* For string and raw data */
		} __ec_align1;

		/*
		* Information about resets of the AP by the EC and the EC's own uptime.
		*/
		#define EC_CMD_GET_UPTIME_INFO 0x0121

		struct ec_response_uptime_info {
		/*
		* Number of milliseconds since the last EC boot. Sysjump resets
		* typically do not restart the EC's time_since_boot epoch.
		*
		* WARNING: The EC's sense of time is much less accurate than the AP's
		* sense of time, in both phase and frequency. This timebase is similar
		* to CLOCK_MONOTONIC_RAW, but with 1% or more frequency error.
		*/
		uint32_t time_since_ec_boot_ms;

		/*
		* Number of times the AP was reset by the EC since the last EC boot.
		* Note that the AP may be held in reset by the EC during the initial
		* boot sequence, such that the very first AP boot may count as more
		* than one here.
		*/
		uint32_t ap_resets_since_ec_boot;

		/*
		* The set of flags which describe the EC's most recent reset. See
		* include/system.h RESET_FLAG_* for details.
		*/
		uint32_t ec_reset_flags;

		/* Empty log entries have both the cause and timestamp set to zero. */
		struct ap_reset_log_entry {
		/*
		* See include/chipset.h: enum chipset_{reset,shutdown}_reason
		* for details.
		*/
		uint16_t reset_cause;

		/* Reserved for protocol growth. */
		uint16_t reserved;

		/*
		* The time of the reset's assertion, in milliseconds since the
		* last EC boot, in the same epoch as time_since_ec_boot_ms.
		* Set to zero if the log entry is empty.
		*/
		uint32_t reset_time_ms;
		} recent_ap_reset[4];
		} __ec_align4;

		/*
		* Add entropy to the device secret (stored in the rollback region).
		*
		* Depending on the chip, the operation may take a long time (e.g. to erase
		* flash), so the commands are asynchronous.
		*/
		#define EC_CMD_ADD_ENTROPY 0x0122

		enum add_entropy_action {
		/* Add entropy to the current secret. */
		ADD_ENTROPY_ASYNC = 0,
		/*
		* Add entropy, and also make sure that the previous secret is erased.
		* (this can be implemented by adding entropy multiple times until
		* all rolback blocks have been overwritten).
		*/
		ADD_ENTROPY_RESET_ASYNC = 1,
		/* Read back result from the previous operation. */
		ADD_ENTROPY_GET_RESULT = 2,
		};

		struct ec_params_rollback_add_entropy {
		uint8_t action;
		} __ec_align1;

		/*
		* Perform a single read of a given ADC channel.
		*/
		#define EC_CMD_ADC_READ 0x0123

		struct ec_params_adc_read {
		uint8_t adc_channel;
		} __ec_align1;

		struct ec_response_adc_read {
		int32_t adc_value;
		} __ec_align4;

		/*
		* Read back rollback info
		*/
		#define EC_CMD_ROLLBACK_INFO 0x0124

		struct ec_response_rollback_info {
		int32_t id; /* Incrementing number to indicate which region to use. */
		int32_t rollback_min_version;
		int32_t rw_rollback_version;
		} __ec_align4;


		/* Issue AP reset */
		#define EC_CMD_AP_RESET 0x0125

		/*****************************************************************************/
		/* The command range 0x200-0x2FF is reserved for Rotor. */

		/*****************************************************************************/
		/*
		* Reserve a range of host commands for the CR51 firmware.
		*/
		#define EC_CMD_CR51_BASE 0x0300
		#define EC_CMD_CR51_LAST 0x03FF

		/*****************************************************************************/
		/* Fingerprint MCU commands: range 0x0400-0x040x */

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