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@@ -1,4 +1,4 @@
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-/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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@@ -42,13 +42,19 @@
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#define EC_LPC_ADDR_HOST_CMD 0x204
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/* I/O addresses for host command args and params */
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-#define EC_LPC_ADDR_HOST_ARGS 0x800
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-#define EC_LPC_ADDR_HOST_PARAM 0x804
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-#define EC_HOST_PARAM_SIZE 0x0fc /* Size of param area in bytes */
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-
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-/* I/O addresses for host command params, old interface */
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-#define EC_LPC_ADDR_OLD_PARAM 0x880
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-#define EC_OLD_PARAM_SIZE 0x080 /* Size of param area in bytes */
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+/* Protocol version 2 */
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+#define EC_LPC_ADDR_HOST_ARGS 0x800 /* And 0x801, 0x802, 0x803 */
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+#define EC_LPC_ADDR_HOST_PARAM 0x804 /* For version 2 params; size is
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+ * EC_PROTO2_MAX_PARAM_SIZE */
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+/* Protocol version 3 */
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+#define EC_LPC_ADDR_HOST_PACKET 0x800 /* Offset of version 3 packet */
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+#define EC_LPC_HOST_PACKET_SIZE 0x100 /* Max size of version 3 packet */
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+
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+/* The actual block is 0x800-0x8ff, but some BIOSes think it's 0x880-0x8ff
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+ * and they tell the kernel that so we have to think of it as two parts. */
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+#define EC_HOST_CMD_REGION0 0x800
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+#define EC_HOST_CMD_REGION1 0x880
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+#define EC_HOST_CMD_REGION_SIZE 0x80
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/* EC command register bit functions */
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#define EC_LPC_CMDR_DATA (1 << 0) /* Data ready for host to read */
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@@ -122,8 +128,8 @@
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#define EC_SWITCH_LID_OPEN 0x01
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#define EC_SWITCH_POWER_BUTTON_PRESSED 0x02
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#define EC_SWITCH_WRITE_PROTECT_DISABLED 0x04
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-/* Recovery requested via keyboard */
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-#define EC_SWITCH_KEYBOARD_RECOVERY 0x08
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+/* Was recovery requested via keyboard; now unused. */
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+#define EC_SWITCH_IGNORE1 0x08
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/* Recovery requested via dedicated signal (from servo board) */
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#define EC_SWITCH_DEDICATED_RECOVERY 0x10
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/* Was fake developer mode switch; now unused. Remove in next refactor. */
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@@ -132,10 +138,13 @@
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/* Host command interface flags */
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/* Host command interface supports LPC args (LPC interface only) */
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#define EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED 0x01
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+/* Host command interface supports version 3 protocol */
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+#define EC_HOST_CMD_FLAG_VERSION_3 0x02
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/* Wireless switch flags */
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#define EC_WIRELESS_SWITCH_WLAN 0x01
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#define EC_WIRELESS_SWITCH_BLUETOOTH 0x02
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+#define EC_WIRELESS_SWITCH_WWAN 0x04
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/*
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* This header file is used in coreboot both in C and ACPI code. The ACPI code
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@@ -191,6 +200,9 @@ enum ec_status {
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EC_RES_UNAVAILABLE = 9, /* No response available */
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EC_RES_TIMEOUT = 10, /* We got a timeout */
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EC_RES_OVERFLOW = 11, /* Table / data overflow */
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+ EC_RES_INVALID_HEADER = 12, /* Header contains invalid data */
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+ EC_RES_REQUEST_TRUNCATED = 13, /* Didn't get the entire request */
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+ EC_RES_RESPONSE_TOO_BIG = 14 /* Response was too big to handle */
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};
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/*
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@@ -272,6 +284,105 @@ struct ec_lpc_host_args {
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*/
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#define EC_HOST_ARGS_FLAG_TO_HOST 0x02
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+/*****************************************************************************/
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+
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+/*
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+ * Protocol version 2 for I2C and SPI send a request this way:
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+ *
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+ * 0 EC_CMD_VERSION0 + (command version)
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+ * 1 Command number
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+ * 2 Length of params = N
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+ * 3..N+2 Params, if any
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+ * N+3 8-bit checksum of bytes 0..N+2
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+ *
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+ * The corresponding response is:
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+ *
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+ * 0 Result code (EC_RES_*)
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+ * 1 Length of params = M
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+ * 2..M+1 Params, if any
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+ * M+2 8-bit checksum of bytes 0..M+1
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+ */
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+#define EC_PROTO2_REQUEST_HEADER_BYTES 3
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+#define EC_PROTO2_REQUEST_TRAILER_BYTES 1
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+#define EC_PROTO2_REQUEST_OVERHEAD (EC_PROTO2_REQUEST_HEADER_BYTES + \
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+ EC_PROTO2_REQUEST_TRAILER_BYTES)
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+
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+#define EC_PROTO2_RESPONSE_HEADER_BYTES 2
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+#define EC_PROTO2_RESPONSE_TRAILER_BYTES 1
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+#define EC_PROTO2_RESPONSE_OVERHEAD (EC_PROTO2_RESPONSE_HEADER_BYTES + \
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+ EC_PROTO2_RESPONSE_TRAILER_BYTES)
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+
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+/* Parameter length was limited by the LPC interface */
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+#define EC_PROTO2_MAX_PARAM_SIZE 0xfc
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+
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+/* Maximum request and response packet sizes for protocol version 2 */
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+#define EC_PROTO2_MAX_REQUEST_SIZE (EC_PROTO2_REQUEST_OVERHEAD + \
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+ EC_PROTO2_MAX_PARAM_SIZE)
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+#define EC_PROTO2_MAX_RESPONSE_SIZE (EC_PROTO2_RESPONSE_OVERHEAD + \
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+ EC_PROTO2_MAX_PARAM_SIZE)
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+
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+/*****************************************************************************/
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+
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+/*
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+ * Value written to legacy command port / prefix byte to indicate protocol
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+ * 3+ structs are being used. Usage is bus-dependent.
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+ */
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+#define EC_COMMAND_PROTOCOL_3 0xda
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+
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+#define EC_HOST_REQUEST_VERSION 3
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+
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+/* Version 3 request from host */
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+struct ec_host_request {
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+ /* Struct version (=3)
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+ *
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+ * EC will return EC_RES_INVALID_HEADER if it receives a header with a
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+ * version it doesn't know how to parse.
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+ */
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+ uint8_t struct_version;
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+
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+ /*
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+ * Checksum of request and data; sum of all bytes including checksum
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+ * should total to 0.
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+ */
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+ uint8_t checksum;
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+
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+ /* Command code */
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+ uint16_t command;
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+
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+ /* Command version */
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+ uint8_t command_version;
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+
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+ /* Unused byte in current protocol version; set to 0 */
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+ uint8_t reserved;
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+
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+ /* Length of data which follows this header */
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+ uint16_t data_len;
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+} __packed;
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+
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+#define EC_HOST_RESPONSE_VERSION 3
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+
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+/* Version 3 response from EC */
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+struct ec_host_response {
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+ /* Struct version (=3) */
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+ uint8_t struct_version;
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+
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+ /*
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+ * Checksum of response and data; sum of all bytes including checksum
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+ * should total to 0.
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+ */
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+ uint8_t checksum;
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+
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+ /* Result code (EC_RES_*) */
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+ uint16_t result;
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+
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+ /* Length of data which follows this header */
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+ uint16_t data_len;
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+
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+ /* Unused bytes in current protocol version; set to 0 */
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+ uint16_t reserved;
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+} __packed;
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+
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+/*****************************************************************************/
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/*
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* Notes on commands:
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*
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@@ -411,6 +522,46 @@ struct ec_response_get_comms_status {
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uint32_t flags; /* Mask of enum ec_comms_status */
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} __packed;
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+/*
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+ * Fake a variety of responses, purely for testing purposes.
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+ * FIXME: Would be nice to force checksum errors.
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+ */
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+#define EC_CMD_TEST_PROTOCOL 0x0a
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+
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+/* Tell the EC what to send back to us. */
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+struct ec_params_test_protocol {
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+ uint32_t ec_result;
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+ uint32_t ret_len;
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+ uint8_t buf[32];
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+} __packed;
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+
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+/* Here it comes... */
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+struct ec_response_test_protocol {
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+ uint8_t buf[32];
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+} __packed;
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+
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+/* Get prococol information */
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+#define EC_CMD_GET_PROTOCOL_INFO 0x0b
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+
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+/* Flags for ec_response_get_protocol_info.flags */
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+/* EC_RES_IN_PROGRESS may be returned if a command is slow */
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+#define EC_PROTOCOL_INFO_IN_PROGRESS_SUPPORTED (1 << 0)
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+
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+struct ec_response_get_protocol_info {
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+ /* Fields which exist if at least protocol version 3 supported */
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+
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+ /* Bitmask of protocol versions supported (1 << n means version n)*/
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+ uint32_t protocol_versions;
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+
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+ /* Maximum request packet size, in bytes */
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+ uint16_t max_request_packet_size;
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+
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+ /* Maximum response packet size, in bytes */
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+ uint16_t max_response_packet_size;
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+
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+ /* Flags; see EC_PROTOCOL_INFO_* */
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+ uint32_t flags;
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+} __packed;
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/*****************************************************************************/
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/* Flash commands */
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@@ -452,15 +603,15 @@ struct ec_params_flash_read {
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/* Write flash */
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#define EC_CMD_FLASH_WRITE 0x12
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+#define EC_VER_FLASH_WRITE 1
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+
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+/* Version 0 of the flash command supported only 64 bytes of data */
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+#define EC_FLASH_WRITE_VER0_SIZE 64
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struct ec_params_flash_write {
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uint32_t offset; /* Byte offset to write */
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uint32_t size; /* Size to write in bytes */
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- /*
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- * Data to write. Could really use EC_PARAM_SIZE - 8, but tidiest to
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- * use a power of 2 so writes stay aligned.
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- */
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- uint8_t data[64];
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+ /* Followed by data to write */
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} __packed;
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/* Erase flash */
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@@ -728,6 +879,49 @@ enum lightbar_command {
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LIGHTBAR_NUM_CMDS
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};
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+/*****************************************************************************/
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+/* LED control commands */
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+
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+#define EC_CMD_LED_CONTROL 0x29
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+
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+enum ec_led_id {
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+ EC_LED_ID_BATTERY_LED = 0,
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+ EC_LED_ID_POWER_BUTTON_LED,
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+ EC_LED_ID_ADAPTER_LED,
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+};
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+
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+/* LED control flags */
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+#define EC_LED_FLAGS_QUERY (1 << 0) /* Query LED capability only */
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+#define EC_LED_FLAGS_AUTO (1 << 1) /* Switch LED back to automatic control */
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+
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+enum ec_led_colors {
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+ EC_LED_COLOR_RED = 0,
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+ EC_LED_COLOR_GREEN,
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+ EC_LED_COLOR_BLUE,
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+ EC_LED_COLOR_YELLOW,
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+ EC_LED_COLOR_WHITE,
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+
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+ EC_LED_COLOR_COUNT
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+};
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+
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+struct ec_params_led_control {
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+ uint8_t led_id; /* Which LED to control */
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+ uint8_t flags; /* Control flags */
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+
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+ uint8_t brightness[EC_LED_COLOR_COUNT];
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+} __packed;
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+
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+struct ec_response_led_control {
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+ /*
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+ * Available brightness value range.
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+ *
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+ * Range 0 means color channel not present.
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+ * Range 1 means on/off control.
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+ * Other values means the LED is control by PWM.
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+ */
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+ uint8_t brightness_range[EC_LED_COLOR_COUNT];
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+} __packed;
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+
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/*****************************************************************************/
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/* Verified boot commands */
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@@ -916,57 +1110,57 @@ struct ec_params_tmp006_set_calibration {
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} __packed;
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/*****************************************************************************/
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-/* CROS_EC - Matrix KeyBoard Protocol */
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+/* MKBP - Matrix KeyBoard Protocol */
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/*
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* Read key state
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*
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- * Returns raw data for keyboard cols; see ec_response_cros_ec_info.cols for
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+ * Returns raw data for keyboard cols; see ec_response_mkbp_info.cols for
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* expected response size.
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*/
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-#define EC_CMD_CROS_EC_STATE 0x60
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+#define EC_CMD_MKBP_STATE 0x60
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/* Provide information about the matrix : number of rows and columns */
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-#define EC_CMD_CROS_EC_INFO 0x61
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+#define EC_CMD_MKBP_INFO 0x61
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-struct ec_response_cros_ec_info {
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+struct ec_response_mkbp_info {
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uint32_t rows;
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uint32_t cols;
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uint8_t switches;
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} __packed;
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/* Simulate key press */
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-#define EC_CMD_CROS_EC_SIMULATE_KEY 0x62
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+#define EC_CMD_MKBP_SIMULATE_KEY 0x62
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-struct ec_params_cros_ec_simulate_key {
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+struct ec_params_mkbp_simulate_key {
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uint8_t col;
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uint8_t row;
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uint8_t pressed;
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} __packed;
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/* Configure keyboard scanning */
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-#define EC_CMD_CROS_EC_SET_CONFIG 0x64
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-#define EC_CMD_CROS_EC_GET_CONFIG 0x65
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+#define EC_CMD_MKBP_SET_CONFIG 0x64
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+#define EC_CMD_MKBP_GET_CONFIG 0x65
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/* flags */
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-enum cros_ec_config_flags {
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- EC_CROS_EC_FLAGS_ENABLE = 1, /* Enable keyboard scanning */
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+enum mkbp_config_flags {
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+ EC_MKBP_FLAGS_ENABLE = 1, /* Enable keyboard scanning */
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};
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-enum cros_ec_config_valid {
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- EC_CROS_EC_VALID_SCAN_PERIOD = 1 << 0,
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- EC_CROS_EC_VALID_POLL_TIMEOUT = 1 << 1,
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- EC_CROS_EC_VALID_MIN_POST_SCAN_DELAY = 1 << 3,
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- EC_CROS_EC_VALID_OUTPUT_SETTLE = 1 << 4,
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- EC_CROS_EC_VALID_DEBOUNCE_DOWN = 1 << 5,
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- EC_CROS_EC_VALID_DEBOUNCE_UP = 1 << 6,
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- EC_CROS_EC_VALID_FIFO_MAX_DEPTH = 1 << 7,
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+enum mkbp_config_valid {
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+ EC_MKBP_VALID_SCAN_PERIOD = 1 << 0,
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+ EC_MKBP_VALID_POLL_TIMEOUT = 1 << 1,
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+ EC_MKBP_VALID_MIN_POST_SCAN_DELAY = 1 << 3,
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+ EC_MKBP_VALID_OUTPUT_SETTLE = 1 << 4,
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+ EC_MKBP_VALID_DEBOUNCE_DOWN = 1 << 5,
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+ EC_MKBP_VALID_DEBOUNCE_UP = 1 << 6,
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+ EC_MKBP_VALID_FIFO_MAX_DEPTH = 1 << 7,
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};
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/* Configuration for our key scanning algorithm */
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-struct ec_cros_ec_config {
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+struct ec_mkbp_config {
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uint32_t valid_mask; /* valid fields */
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- uint8_t flags; /* some flags (enum cros_ec_config_flags) */
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+ uint8_t flags; /* some flags (enum mkbp_config_flags) */
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uint8_t valid_flags; /* which flags are valid */
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uint16_t scan_period_us; /* period between start of scans */
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/* revert to interrupt mode after no activity for this long */
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@@ -985,12 +1179,12 @@ struct ec_cros_ec_config {
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uint8_t fifo_max_depth;
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} __packed;
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-struct ec_params_cros_ec_set_config {
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- struct ec_cros_ec_config config;
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+struct ec_params_mkbp_set_config {
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+ struct ec_mkbp_config config;
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} __packed;
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-struct ec_response_cros_ec_get_config {
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- struct ec_cros_ec_config config;
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+struct ec_response_mkbp_get_config {
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+ struct ec_mkbp_config config;
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} __packed;
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/* Run the key scan emulation */
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@@ -1146,7 +1340,7 @@ struct ec_response_gpio_get {
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#define EC_CMD_I2C_READ 0x94
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struct ec_params_i2c_read {
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- uint16_t addr;
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+ uint16_t addr; /* 8-bit address (7-bit shifted << 1) */
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uint8_t read_size; /* Either 8 or 16. */
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uint8_t port;
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uint8_t offset;
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@@ -1160,7 +1354,7 @@ struct ec_response_i2c_read {
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struct ec_params_i2c_write {
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uint16_t data;
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- uint16_t addr;
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+ uint16_t addr; /* 8-bit address (7-bit shifted << 1) */
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uint8_t write_size; /* Either 8 or 16. */
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uint8_t port;
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uint8_t offset;
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@@ -1243,6 +1437,61 @@ struct ec_response_ldo_get {
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uint8_t state;
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} __packed;
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+/*****************************************************************************/
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+/* Power info. */
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+
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+/*
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+ * Get power info.
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+ */
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+#define EC_CMD_POWER_INFO 0x9d
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+
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+struct ec_response_power_info {
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+ uint32_t usb_dev_type;
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+ uint16_t voltage_ac;
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+ uint16_t voltage_system;
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+ uint16_t current_system;
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+ uint16_t usb_current_limit;
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+} __packed;
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+
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+/*****************************************************************************/
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+/* I2C passthru command */
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+
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+#define EC_CMD_I2C_PASSTHRU 0x9e
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+
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+/* Slave address is 10 (not 7) bit */
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+#define EC_I2C_FLAG_10BIT (1 << 16)
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+
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+/* Read data; if not present, message is a write */
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+#define EC_I2C_FLAG_READ (1 << 15)
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+
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+/* Mask for address */
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+#define EC_I2C_ADDR_MASK 0x3ff
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+
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+#define EC_I2C_STATUS_NAK (1 << 0) /* Transfer was not acknowledged */
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+#define EC_I2C_STATUS_TIMEOUT (1 << 1) /* Timeout during transfer */
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+
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+/* Any error */
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+#define EC_I2C_STATUS_ERROR (EC_I2C_STATUS_NAK | EC_I2C_STATUS_TIMEOUT)
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+
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+struct ec_params_i2c_passthru_msg {
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+ uint16_t addr_flags; /* I2C slave address (7 or 10 bits) and flags */
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+ uint16_t len; /* Number of bytes to read or write */
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+} __packed;
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+
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+struct ec_params_i2c_passthru {
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+ uint8_t port; /* I2C port number */
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+ uint8_t num_msgs; /* Number of messages */
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+ struct ec_params_i2c_passthru_msg msg[];
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+ /* Data to write for all messages is concatenated here */
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+} __packed;
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+
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+struct ec_response_i2c_passthru {
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+ uint8_t i2c_status; /* Status flags (EC_I2C_STATUS_...) */
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+ uint8_t num_msgs; /* Number of messages processed */
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+ uint8_t data[]; /* Data read by messages concatenated here */
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+} __packed;
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+
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+
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/*****************************************************************************/
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/* Temporary debug commands. TODO: remove this crosbug.com/p/13849 */
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@@ -1259,7 +1508,16 @@ struct ec_response_ldo_get {
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#define EC_CMD_CHARGE_CURRENT_LIMIT 0xa1
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struct ec_params_current_limit {
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- uint32_t limit;
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+ uint32_t limit; /* in mA */
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+} __packed;
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+
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+/*
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+ * Set maximum external power current.
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+ */
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+#define EC_CMD_EXT_POWER_CURRENT_LIMIT 0xa2
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+
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+struct ec_params_ext_power_current_limit {
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+ uint32_t limit; /* in mA */
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} __packed;
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/*****************************************************************************/
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Simon Glass