+// SPDX-License-Identifier: GPL-2.0+
/*
* Chromium OS cros_ec driver
*
* Copyright (c) 2012 The Chromium OS Authors.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/*
* is not reset.
*/
+#define LOG_CATEGORY UCLASS_CROS_EC
+
#include <common.h>
#include <command.h>
#include <dm.h>
+#include <flash.h>
#include <i2c.h>
#include <cros_ec.h>
#include <fdtdec.h>
+#include <log.h>
#include <malloc.h>
#include <spi.h>
+#include <linux/delay.h>
#include <linux/errno.h>
#include <asm/io.h>
#include <asm-generic/gpio.h>
CROS_EC_CMD_TIMEOUT_MS = 5000,
/* Timeout waiting for a synchronous hash to be recomputed */
CROS_EC_CMD_HASH_TIMEOUT_MS = 2000,
+
+ /* Wait 10 ms between attempts to check if EC's hash is ready */
+ CROS_EC_HASH_CHECK_DELAY_MS = 10,
+
};
-DECLARE_GLOBAL_DATA_PTR;
+#define INVALID_HCMD 0xFF
+
+/*
+ * Map UHEPI masks to non UHEPI commands in order to support old EC FW
+ * which does not support UHEPI command.
+ */
+static const struct {
+ u8 set_cmd;
+ u8 clear_cmd;
+ u8 get_cmd;
+} event_map[] = {
+ [EC_HOST_EVENT_MAIN] = {
+ INVALID_HCMD, EC_CMD_HOST_EVENT_CLEAR,
+ INVALID_HCMD,
+ },
+ [EC_HOST_EVENT_B] = {
+ INVALID_HCMD, EC_CMD_HOST_EVENT_CLEAR_B,
+ EC_CMD_HOST_EVENT_GET_B,
+ },
+ [EC_HOST_EVENT_SCI_MASK] = {
+ EC_CMD_HOST_EVENT_SET_SCI_MASK, INVALID_HCMD,
+ EC_CMD_HOST_EVENT_GET_SCI_MASK,
+ },
+ [EC_HOST_EVENT_SMI_MASK] = {
+ EC_CMD_HOST_EVENT_SET_SMI_MASK, INVALID_HCMD,
+ EC_CMD_HOST_EVENT_GET_SMI_MASK,
+ },
+ [EC_HOST_EVENT_ALWAYS_REPORT_MASK] = {
+ INVALID_HCMD, INVALID_HCMD, INVALID_HCMD,
+ },
+ [EC_HOST_EVENT_ACTIVE_WAKE_MASK] = {
+ EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD,
+ EC_CMD_HOST_EVENT_GET_WAKE_MASK,
+ },
+ [EC_HOST_EVENT_LAZY_WAKE_MASK_S0IX] = {
+ EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD,
+ EC_CMD_HOST_EVENT_GET_WAKE_MASK,
+ },
+ [EC_HOST_EVENT_LAZY_WAKE_MASK_S3] = {
+ EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD,
+ EC_CMD_HOST_EVENT_GET_WAKE_MASK,
+ },
+ [EC_HOST_EVENT_LAZY_WAKE_MASK_S5] = {
+ EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD,
+ EC_CMD_HOST_EVENT_GET_WAKE_MASK,
+ },
+};
void cros_ec_dump_data(const char *name, int cmd, const uint8_t *data, int len)
{
* @param dout_len Size of output data in bytes
* @return packet size in bytes, or <0 if error.
*/
-static int create_proto3_request(struct cros_ec_dev *dev,
+static int create_proto3_request(struct cros_ec_dev *cdev,
int cmd, int cmd_version,
const void *dout, int dout_len)
{
- struct ec_host_request *rq = (struct ec_host_request *)dev->dout;
+ struct ec_host_request *rq = (struct ec_host_request *)cdev->dout;
int out_bytes = dout_len + sizeof(*rq);
/* Fail if output size is too big */
- if (out_bytes > (int)sizeof(dev->dout)) {
+ if (out_bytes > (int)sizeof(cdev->dout)) {
debug("%s: Cannot send %d bytes\n", __func__, dout_len);
return -EC_RES_REQUEST_TRUNCATED;
}
memcpy(rq + 1, dout, dout_len);
/* Write checksum field so the entire packet sums to 0 */
- rq->checksum = (uint8_t)(-cros_ec_calc_checksum(dev->dout, out_bytes));
+ rq->checksum = (uint8_t)(-cros_ec_calc_checksum(cdev->dout, out_bytes));
- cros_ec_dump_data("out", cmd, dev->dout, out_bytes);
+ cros_ec_dump_data("out", cmd, cdev->dout, out_bytes);
/* Return size of request packet */
return out_bytes;
* @param din_len Maximum size of response in bytes
* @return maximum expected number of bytes in response, or <0 if error.
*/
-static int prepare_proto3_response_buffer(struct cros_ec_dev *dev, int din_len)
+static int prepare_proto3_response_buffer(struct cros_ec_dev *cdev, int din_len)
{
int in_bytes = din_len + sizeof(struct ec_host_response);
/* Fail if input size is too big */
- if (in_bytes > (int)sizeof(dev->din)) {
+ if (in_bytes > (int)sizeof(cdev->din)) {
debug("%s: Cannot receive %d bytes\n", __func__, din_len);
return -EC_RES_RESPONSE_TOO_BIG;
}
return rs->data_len;
}
-static int send_command_proto3(struct cros_ec_dev *dev,
+static int send_command_proto3(struct cros_ec_dev *cdev,
int cmd, int cmd_version,
const void *dout, int dout_len,
uint8_t **dinp, int din_len)
int rv;
/* Create request packet */
- out_bytes = create_proto3_request(dev, cmd, cmd_version,
+ out_bytes = create_proto3_request(cdev, cmd, cmd_version,
dout, dout_len);
if (out_bytes < 0)
return out_bytes;
/* Prepare response buffer */
- in_bytes = prepare_proto3_response_buffer(dev, din_len);
+ in_bytes = prepare_proto3_response_buffer(cdev, din_len);
if (in_bytes < 0)
return in_bytes;
- ops = dm_cros_ec_get_ops(dev->dev);
- rv = ops->packet ? ops->packet(dev->dev, out_bytes, in_bytes) : -ENOSYS;
+ ops = dm_cros_ec_get_ops(cdev->dev);
+ rv = ops->packet ? ops->packet(cdev->dev, out_bytes, in_bytes) :
+ -ENOSYS;
if (rv < 0)
return rv;
/* Process the response */
- return handle_proto3_response(dev, dinp, din_len);
+ return handle_proto3_response(cdev, dinp, din_len);
}
-static int send_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version,
+static int send_command(struct cros_ec_dev *dev, uint cmd, int cmd_version,
const void *dout, int dout_len,
uint8_t **dinp, int din_len)
{
* @param din_len Maximum size of response in bytes
* @return number of bytes in response, or -ve on error
*/
-static int ec_command_inptr(struct cros_ec_dev *dev, uint8_t cmd,
- int cmd_version, const void *dout, int dout_len, uint8_t **dinp,
- int din_len)
+static int ec_command_inptr(struct udevice *dev, uint cmd,
+ int cmd_version, const void *dout, int dout_len,
+ uint8_t **dinp, int din_len)
{
+ struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
uint8_t *din = NULL;
int len;
- len = send_command(dev, cmd, cmd_version, dout, dout_len,
- &din, din_len);
+ len = send_command(cdev, cmd, cmd_version, dout, dout_len, &din,
+ din_len);
/* If the command doesn't complete, wait a while */
if (len == -EC_RES_IN_PROGRESS) {
int ret;
mdelay(50); /* Insert some reasonable delay */
- ret = send_command(dev, EC_CMD_GET_COMMS_STATUS, 0,
- NULL, 0,
- (uint8_t **)&resp, sizeof(*resp));
+ ret = send_command(cdev, EC_CMD_GET_COMMS_STATUS, 0,
+ NULL, 0,
+ (uint8_t **)&resp, sizeof(*resp));
if (ret < 0)
return ret;
/* OK it completed, so read the status response */
/* not sure why it was 0 for the last argument */
- len = send_command(dev, EC_CMD_RESEND_RESPONSE, 0,
- NULL, 0, &din, din_len);
+ len = send_command(cdev, EC_CMD_RESEND_RESPONSE, 0, NULL, 0,
+ &din, din_len);
}
debug("%s: len=%d, din=%p\n", __func__, len, din);
* @param din_len Maximum size of response in bytes
* @return number of bytes in response, or -ve on error
*/
-static int ec_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version,
+static int ec_command(struct udevice *dev, uint cmd, int cmd_version,
const void *dout, int dout_len,
void *din, int din_len)
{
assert((din_len == 0) || din);
len = ec_command_inptr(dev, cmd, cmd_version, dout, dout_len,
- &in_buffer, din_len);
+ &in_buffer, din_len);
if (len > 0) {
/*
* If we were asked to put it somewhere, do so, otherwise just
*/
if (din && in_buffer) {
assert(len <= din_len);
+ if (len > din_len)
+ return -ENOSPC;
memmove(din, in_buffer, len);
}
}
int cros_ec_scan_keyboard(struct udevice *dev, struct mbkp_keyscan *scan)
{
- struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
-
- if (ec_command(cdev, EC_CMD_MKBP_STATE, 0, NULL, 0, scan,
+ if (ec_command(dev, EC_CMD_MKBP_STATE, 0, NULL, 0, scan,
sizeof(scan->data)) != sizeof(scan->data))
return -1;
return 0;
}
-int cros_ec_read_id(struct cros_ec_dev *dev, char *id, int maxlen)
+int cros_ec_get_next_event(struct udevice *dev,
+ struct ec_response_get_next_event *event)
+{
+ int ret;
+
+ ret = ec_command(dev, EC_CMD_GET_NEXT_EVENT, 0, NULL, 0,
+ event, sizeof(*event));
+ if (ret < 0)
+ return ret;
+ else if (ret != sizeof(*event))
+ return -EC_RES_INVALID_RESPONSE;
+
+ return 0;
+}
+
+int cros_ec_read_id(struct udevice *dev, char *id, int maxlen)
{
struct ec_response_get_version *r;
+ int ret;
- if (ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0,
- (uint8_t **)&r, sizeof(*r)) != sizeof(*r))
+ ret = ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0,
+ (uint8_t **)&r, sizeof(*r));
+ if (ret != sizeof(*r)) {
+ log_err("Got rc %d, expected %u\n", ret, (uint)sizeof(*r));
return -1;
+ }
if (maxlen > (int)sizeof(r->version_string_ro))
maxlen = sizeof(r->version_string_ro);
memcpy(id, r->version_string_rw, maxlen);
break;
default:
+ log_err("Invalid EC image %d\n", r->current_image);
return -1;
}
return 0;
}
-int cros_ec_read_version(struct cros_ec_dev *dev,
- struct ec_response_get_version **versionp)
+int cros_ec_read_version(struct udevice *dev,
+ struct ec_response_get_version **versionp)
{
if (ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0,
(uint8_t **)versionp, sizeof(**versionp))
return 0;
}
-int cros_ec_read_build_info(struct cros_ec_dev *dev, char **strp)
+int cros_ec_read_build_info(struct udevice *dev, char **strp)
{
if (ec_command_inptr(dev, EC_CMD_GET_BUILD_INFO, 0, NULL, 0,
(uint8_t **)strp, EC_PROTO2_MAX_PARAM_SIZE) < 0)
return 0;
}
-int cros_ec_read_current_image(struct cros_ec_dev *dev,
- enum ec_current_image *image)
+int cros_ec_read_current_image(struct udevice *dev,
+ enum ec_current_image *image)
{
struct ec_response_get_version *r;
return 0;
}
-static int cros_ec_wait_on_hash_done(struct cros_ec_dev *dev,
- struct ec_response_vboot_hash *hash)
+static int cros_ec_wait_on_hash_done(struct udevice *dev,
+ struct ec_params_vboot_hash *p,
+ struct ec_response_vboot_hash *hash)
{
- struct ec_params_vboot_hash p;
ulong start;
start = get_timer(0);
while (hash->status == EC_VBOOT_HASH_STATUS_BUSY) {
- mdelay(50); /* Insert some reasonable delay */
+ mdelay(CROS_EC_HASH_CHECK_DELAY_MS);
- p.cmd = EC_VBOOT_HASH_GET;
- if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p),
- hash, sizeof(*hash)) < 0)
+ p->cmd = EC_VBOOT_HASH_GET;
+
+ if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, p, sizeof(*p), hash,
+ sizeof(*hash)) < 0)
return -1;
if (get_timer(start) > CROS_EC_CMD_HASH_TIMEOUT_MS) {
return 0;
}
-
-int cros_ec_read_hash(struct cros_ec_dev *dev,
- struct ec_response_vboot_hash *hash)
+int cros_ec_read_hash(struct udevice *dev, uint hash_offset,
+ struct ec_response_vboot_hash *hash)
{
struct ec_params_vboot_hash p;
int rv;
p.cmd = EC_VBOOT_HASH_GET;
+ p.offset = hash_offset;
if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p),
hash, sizeof(*hash)) < 0)
return -1;
/* If the EC is busy calculating the hash, fidget until it's done. */
- rv = cros_ec_wait_on_hash_done(dev, hash);
+ rv = cros_ec_wait_on_hash_done(dev, &p, hash);
if (rv)
return rv;
p.cmd = EC_VBOOT_HASH_START;
p.hash_type = EC_VBOOT_HASH_TYPE_SHA256;
p.nonce_size = 0;
- p.offset = EC_VBOOT_HASH_OFFSET_RW;
+ p.offset = hash_offset;
if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p),
hash, sizeof(*hash)) < 0)
return -1;
- rv = cros_ec_wait_on_hash_done(dev, hash);
+ rv = cros_ec_wait_on_hash_done(dev, &p, hash);
if (rv)
return rv;
+ if (hash->status != EC_VBOOT_HASH_STATUS_DONE) {
+ log_err("Hash did not complete, status=%d\n", hash->status);
+ return -EIO;
+ }
debug("%s: hash done\n", __func__);
return 0;
}
-static int cros_ec_invalidate_hash(struct cros_ec_dev *dev)
+static int cros_ec_invalidate_hash(struct udevice *dev)
{
struct ec_params_vboot_hash p;
struct ec_response_vboot_hash *hash;
return 0;
}
-int cros_ec_reboot(struct cros_ec_dev *dev, enum ec_reboot_cmd cmd,
- uint8_t flags)
+int cros_ec_hello(struct udevice *dev, uint *handshakep)
+{
+ struct ec_params_hello req;
+ struct ec_response_hello *resp;
+
+ req.in_data = 0x12345678;
+ if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req),
+ (uint8_t **)&resp, sizeof(*resp)) < 0)
+ return -EIO;
+ if (resp->out_data != req.in_data + 0x01020304) {
+ printf("Received invalid handshake %x\n", resp->out_data);
+ if (handshakep)
+ *handshakep = req.in_data;
+ return -ENOTSYNC;
+ }
+
+ return 0;
+}
+
+int cros_ec_reboot(struct udevice *dev, enum ec_reboot_cmd cmd, uint8_t flags)
{
struct ec_params_reboot_ec p;
return -1;
if (!(flags & EC_REBOOT_FLAG_ON_AP_SHUTDOWN)) {
+ ulong start;
+
/*
* EC reboot will take place immediately so delay to allow it
* to complete. Note that some reboot types (EC_REBOOT_COLD)
* will reboot the AP as well, in which case we won't actually
* get to this point.
*/
- /*
- * TODO(rspangler@chromium.org): Would be nice if we had a
- * better way to determine when the reboot is complete. Could
- * we poll a memory-mapped LPC value?
- */
- udelay(50000);
+ mdelay(50);
+ start = get_timer(0);
+ while (cros_ec_hello(dev, NULL)) {
+ if (get_timer(start) > 3000) {
+ log_err("EC did not return from reboot\n");
+ return -ETIMEDOUT;
+ }
+ mdelay(5);
+ }
}
return 0;
return dm_gpio_get_value(&cdev->ec_int);
}
-int cros_ec_info(struct cros_ec_dev *dev, struct ec_response_mkbp_info *info)
+int cros_ec_info(struct udevice *dev, struct ec_response_mkbp_info *info)
{
if (ec_command(dev, EC_CMD_MKBP_INFO, 0, NULL, 0, info,
sizeof(*info)) != sizeof(*info))
return 0;
}
-int cros_ec_get_host_events(struct cros_ec_dev *dev, uint32_t *events_ptr)
+int cros_ec_get_event_mask(struct udevice *dev, uint type, uint32_t *mask)
+{
+ struct ec_response_host_event_mask rsp;
+ int ret;
+
+ ret = ec_command(dev, type, 0, NULL, 0, &rsp, sizeof(rsp));
+ if (ret < 0)
+ return ret;
+ else if (ret != sizeof(rsp))
+ return -EINVAL;
+
+ *mask = rsp.mask;
+
+ return 0;
+}
+
+int cros_ec_set_event_mask(struct udevice *dev, uint type, uint32_t mask)
+{
+ struct ec_params_host_event_mask req;
+ int ret;
+
+ req.mask = mask;
+
+ ret = ec_command(dev, type, 0, &req, sizeof(req), NULL, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+int cros_ec_get_host_events(struct udevice *dev, uint32_t *events_ptr)
{
struct ec_response_host_event_mask *resp;
return 0;
}
-int cros_ec_clear_host_events(struct cros_ec_dev *dev, uint32_t events)
+int cros_ec_clear_host_events(struct udevice *dev, uint32_t events)
{
struct ec_params_host_event_mask params;
return 0;
}
-int cros_ec_flash_protect(struct cros_ec_dev *dev,
- uint32_t set_mask, uint32_t set_flags,
- struct ec_response_flash_protect *resp)
+int cros_ec_flash_protect(struct udevice *dev, uint32_t set_mask,
+ uint32_t set_flags,
+ struct ec_response_flash_protect *resp)
{
struct ec_params_flash_protect params;
return 0;
}
-static int cros_ec_check_version(struct cros_ec_dev *dev)
+static int cros_ec_check_version(struct udevice *dev)
{
+ struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
struct ec_params_hello req;
- struct ec_response_hello *resp;
struct dm_cros_ec_ops *ops;
int ret;
- ops = dm_cros_ec_get_ops(dev->dev);
+ ops = dm_cros_ec_get_ops(dev);
if (ops->check_version) {
- ret = ops->check_version(dev->dev);
+ ret = ops->check_version(dev);
if (ret)
return ret;
}
*/
/* Try sending a version 3 packet */
- dev->protocol_version = 3;
+ cdev->protocol_version = 3;
req.in_data = 0;
- if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req),
- (uint8_t **)&resp, sizeof(*resp)) > 0) {
+ ret = cros_ec_hello(dev, NULL);
+ if (!ret || ret == -ENOTSYNC)
return 0;
- }
/* Try sending a version 2 packet */
- dev->protocol_version = 2;
- if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req),
- (uint8_t **)&resp, sizeof(*resp)) > 0) {
+ cdev->protocol_version = 2;
+ ret = cros_ec_hello(dev, NULL);
+ if (!ret || ret == -ENOTSYNC)
return 0;
- }
/*
* Fail if we're still here, since the EC doesn't understand any
* version is no longer supported, and we don't know about any new
* protocol versions.
*/
- dev->protocol_version = 0;
+ cdev->protocol_version = 0;
printf("%s: ERROR: old EC interface not supported\n", __func__);
return -1;
}
-int cros_ec_test(struct cros_ec_dev *dev)
+int cros_ec_test(struct udevice *dev)
{
- struct ec_params_hello req;
- struct ec_response_hello *resp;
+ uint out_data;
+ int ret;
- req.in_data = 0x12345678;
- if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req),
- (uint8_t **)&resp, sizeof(*resp)) < sizeof(*resp)) {
+ ret = cros_ec_hello(dev, &out_data);
+ if (ret == -ENOTSYNC) {
+ printf("Received invalid handshake %x\n", out_data);
+ return ret;
+ } else if (ret) {
printf("ec_command_inptr() returned error\n");
- return -1;
- }
- if (resp->out_data != req.in_data + 0x01020304) {
- printf("Received invalid handshake %x\n", resp->out_data);
- return -1;
+ return ret;
}
return 0;
}
-int cros_ec_flash_offset(struct cros_ec_dev *dev, enum ec_flash_region region,
+int cros_ec_flash_offset(struct udevice *dev, enum ec_flash_region region,
uint32_t *offset, uint32_t *size)
{
struct ec_params_flash_region_info p;
return 0;
}
-int cros_ec_flash_erase(struct cros_ec_dev *dev, uint32_t offset, uint32_t size)
+int cros_ec_flash_erase(struct udevice *dev, uint32_t offset, uint32_t size)
{
struct ec_params_flash_erase p;
* @param size Number of bytes to write
* @return 0 if ok, -1 on error
*/
-static int cros_ec_flash_write_block(struct cros_ec_dev *dev,
- const uint8_t *data, uint32_t offset, uint32_t size)
+static int cros_ec_flash_write_block(struct udevice *dev, const uint8_t *data,
+ uint32_t offset, uint32_t size)
{
struct ec_params_flash_write *p;
int ret;
/**
* Return optimal flash write burst size
*/
-static int cros_ec_flash_write_burst_size(struct cros_ec_dev *dev)
+static int cros_ec_flash_write_burst_size(struct udevice *dev)
{
return EC_FLASH_WRITE_VER0_SIZE;
}
* @param dev Pointer to device
* @param info Pointer to output flash info struct
*/
-int cros_ec_read_flashinfo(struct cros_ec_dev *dev,
- struct ec_response_flash_info *info)
+int cros_ec_read_flashinfo(struct udevice *dev,
+ struct ec_response_flash_info *info)
{
int ret;
return ret < sizeof(*info) ? -1 : 0;
}
-int cros_ec_flash_write(struct cros_ec_dev *dev, const uint8_t *data,
- uint32_t offset, uint32_t size)
+int cros_ec_flash_write(struct udevice *dev, const uint8_t *data,
+ uint32_t offset, uint32_t size)
{
+ struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
uint32_t burst = cros_ec_flash_write_burst_size(dev);
uint32_t end, off;
int ret;
+ if (!burst)
+ return -EINVAL;
+
/*
* TODO: round up to the nearest multiple of write size. Can get away
* without that on link right now because its write size is 4 bytes.
/* If the data is empty, there is no point in programming it */
todo = min(end - off, burst);
- if (dev->optimise_flash_write &&
- cros_ec_data_is_erased((uint32_t *)data, todo))
+ if (cdev->optimise_flash_write &&
+ cros_ec_data_is_erased((uint32_t *)data, todo))
continue;
ret = cros_ec_flash_write_block(dev, data, off, todo);
}
/**
+ * Run verification on a slot
+ *
+ * @param me CrosEc instance
+ * @param region Region to run verification on
+ * @return 0 if success or not applicable. Non-zero if verification failed.
+ */
+int cros_ec_efs_verify(struct udevice *dev, enum ec_flash_region region)
+{
+ struct ec_params_efs_verify p;
+ int rv;
+
+ log_info("EFS: EC is verifying updated image...\n");
+ p.region = region;
+
+ rv = ec_command(dev, EC_CMD_EFS_VERIFY, 0, &p, sizeof(p), NULL, 0);
+ if (rv >= 0) {
+ log_info("EFS: Verification success\n");
+ return 0;
+ }
+ if (rv == -EC_RES_INVALID_COMMAND) {
+ log_info("EFS: EC doesn't support EFS_VERIFY command\n");
+ return 0;
+ }
+ log_info("EFS: Verification failed\n");
+
+ return rv;
+}
+
+/**
* Read a single block from the flash
*
* Read a block of data from the EC flash. The size must not exceed the flash
* @param size Number of bytes to read
* @return 0 if ok, -1 on error
*/
-static int cros_ec_flash_read_block(struct cros_ec_dev *dev, uint8_t *data,
- uint32_t offset, uint32_t size)
+static int cros_ec_flash_read_block(struct udevice *dev, uint8_t *data,
+ uint32_t offset, uint32_t size)
{
struct ec_params_flash_read p;
&p, sizeof(p), data, size) >= 0 ? 0 : -1;
}
-int cros_ec_flash_read(struct cros_ec_dev *dev, uint8_t *data, uint32_t offset,
- uint32_t size)
+int cros_ec_flash_read(struct udevice *dev, uint8_t *data, uint32_t offset,
+ uint32_t size)
{
uint32_t burst = cros_ec_flash_write_burst_size(dev);
uint32_t end, off;
return 0;
}
-int cros_ec_flash_update_rw(struct cros_ec_dev *dev,
- const uint8_t *image, int image_size)
+int cros_ec_flash_update_rw(struct udevice *dev, const uint8_t *image,
+ int image_size)
{
uint32_t rw_offset, rw_size;
int ret;
- if (cros_ec_flash_offset(dev, EC_FLASH_REGION_RW, &rw_offset, &rw_size))
+ if (cros_ec_flash_offset(dev, EC_FLASH_REGION_ACTIVE, &rw_offset,
+ &rw_size))
return -1;
if (image_size > (int)rw_size)
return -1;
return 0;
}
-int cros_ec_read_vbnvcontext(struct cros_ec_dev *dev, uint8_t *block)
+int cros_ec_get_sku_id(struct udevice *dev)
+{
+ struct ec_sku_id_info *r;
+ int ret;
+
+ ret = ec_command_inptr(dev, EC_CMD_GET_SKU_ID, 0, NULL, 0,
+ (uint8_t **)&r, sizeof(*r));
+ if (ret != sizeof(*r))
+ return -ret;
+
+ return r->sku_id;
+}
+
+int cros_ec_read_nvdata(struct udevice *dev, uint8_t *block, int size)
{
struct ec_params_vbnvcontext p;
int len;
+ if (size != EC_VBNV_BLOCK_SIZE && size != EC_VBNV_BLOCK_SIZE_V2)
+ return -EINVAL;
+
p.op = EC_VBNV_CONTEXT_OP_READ;
len = ec_command(dev, EC_CMD_VBNV_CONTEXT, EC_VER_VBNV_CONTEXT,
- &p, sizeof(p), block, EC_VBNV_BLOCK_SIZE);
- if (len < EC_VBNV_BLOCK_SIZE)
- return -1;
+ &p, sizeof(uint32_t) + size, block, size);
+ if (len != size) {
+ log_err("Expected %d bytes, got %d\n", size, len);
+ return -EIO;
+ }
return 0;
}
-int cros_ec_write_vbnvcontext(struct cros_ec_dev *dev, const uint8_t *block)
+int cros_ec_write_nvdata(struct udevice *dev, const uint8_t *block, int size)
{
struct ec_params_vbnvcontext p;
int len;
+ if (size != EC_VBNV_BLOCK_SIZE && size != EC_VBNV_BLOCK_SIZE_V2)
+ return -EINVAL;
p.op = EC_VBNV_CONTEXT_OP_WRITE;
- memcpy(p.block, block, sizeof(p.block));
+ memcpy(p.block, block, size);
len = ec_command_inptr(dev, EC_CMD_VBNV_CONTEXT, EC_VER_VBNV_CONTEXT,
- &p, sizeof(p), NULL, 0);
+ &p, sizeof(uint32_t) + size, NULL, 0);
+ if (len < 0)
+ return -1;
+
+ return 0;
+}
+
+int cros_ec_battery_cutoff(struct udevice *dev, uint8_t flags)
+{
+ struct ec_params_battery_cutoff p;
+ int len;
+
+ p.flags = flags;
+ len = ec_command(dev, EC_CMD_BATTERY_CUT_OFF, 1, &p, sizeof(p),
+ NULL, 0);
+
if (len < 0)
return -1;
+ return 0;
+}
+
+int cros_ec_set_pwm_duty(struct udevice *dev, uint8_t index, uint16_t duty)
+{
+ struct ec_params_pwm_set_duty p;
+ int ret;
+
+ p.duty = duty;
+ p.pwm_type = EC_PWM_TYPE_GENERIC;
+ p.index = index;
+
+ ret = ec_command(dev, EC_CMD_PWM_SET_DUTY, 0, &p, sizeof(p),
+ NULL, 0);
+ if (ret < 0)
+ return ret;
return 0;
}
int cros_ec_set_ldo(struct udevice *dev, uint8_t index, uint8_t state)
{
- struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
struct ec_params_ldo_set params;
params.index = index;
params.state = state;
- if (ec_command_inptr(cdev, EC_CMD_LDO_SET, 0, ¶ms, sizeof(params),
+ if (ec_command_inptr(dev, EC_CMD_LDO_SET, 0, ¶ms, sizeof(params),
NULL, 0))
return -1;
int cros_ec_get_ldo(struct udevice *dev, uint8_t index, uint8_t *state)
{
- struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
struct ec_params_ldo_get params;
struct ec_response_ldo_get *resp;
params.index = index;
- if (ec_command_inptr(cdev, EC_CMD_LDO_GET, 0, ¶ms, sizeof(params),
+ if (ec_command_inptr(dev, EC_CMD_LDO_GET, 0, ¶ms, sizeof(params),
(uint8_t **)&resp, sizeof(*resp)) !=
sizeof(*resp))
return -1;
GPIOD_IS_IN);
cdev->optimise_flash_write = dev_read_bool(dev, "optimise-flash-write");
- if (cros_ec_check_version(cdev)) {
+ if (cros_ec_check_version(dev)) {
debug("%s: Could not detect CROS-EC version\n", __func__);
return -CROS_EC_ERR_CHECK_VERSION;
}
- if (cros_ec_read_id(cdev, id, sizeof(id))) {
+ if (cros_ec_read_id(dev, id, sizeof(id))) {
debug("%s: Could not read KBC ID\n", __func__);
return -CROS_EC_ERR_READ_ID;
}
return -1;
}
- if (of_read_fmap_entry(flash_node, "flash", &config->flash)) {
+ if (ofnode_read_fmap_entry(flash_node, &config->flash)) {
debug("Failed to decode flash node in chrome-ec\n");
return -1;
}
config->flash_erase_value = ofnode_read_s32_default(flash_node,
"erase-value", -1);
- for (node = ofnode_first_subnode(flash_node); ofnode_valid(node);
- node = ofnode_next_subnode(node)) {
+ ofnode_for_each_subnode(node, flash_node) {
const char *name = ofnode_get_name(node);
enum ec_flash_region region;
if (0 == strcmp(name, "ro")) {
region = EC_FLASH_REGION_RO;
} else if (0 == strcmp(name, "rw")) {
- region = EC_FLASH_REGION_RW;
+ region = EC_FLASH_REGION_ACTIVE;
} else if (0 == strcmp(name, "wp-ro")) {
region = EC_FLASH_REGION_WP_RO;
} else {
return -1;
}
- if (of_read_fmap_entry(node, "reg", &config->region[region])) {
+ if (ofnode_read_fmap_entry(node, &config->region[region])) {
debug("Failed to decode flash region in chrome-ec'\n");
return -1;
}
int cros_ec_i2c_tunnel(struct udevice *dev, int port, struct i2c_msg *in,
int nmsgs)
{
- struct cros_ec_dev *cdev = dev_get_uclass_priv(dev);
union {
struct ec_params_i2c_passthru p;
uint8_t outbuf[EC_PROTO2_MAX_PARAM_SIZE];
}
}
- rv = ec_command(cdev, EC_CMD_I2C_PASSTHRU, 0, p, pdata - (uint8_t *)p,
+ rv = ec_command(dev, EC_CMD_I2C_PASSTHRU, 0, p, pdata - (uint8_t *)p,
r, sizeof(*r) + read_len);
if (rv < 0)
return rv;
return 0;
}
+int cros_ec_get_features(struct udevice *dev, u64 *featuresp)
+{
+ struct ec_response_get_features r;
+ int rv;
+
+ rv = ec_command(dev, EC_CMD_GET_FEATURES, 0, NULL, 0, &r, sizeof(r));
+ if (rv != sizeof(r))
+ return -EIO;
+ *featuresp = r.flags[0] | (u64)r.flags[1] << 32;
+
+ return 0;
+}
+
+int cros_ec_check_feature(struct udevice *dev, uint feature)
+{
+ struct ec_response_get_features r;
+ int rv;
+
+ rv = ec_command(dev, EC_CMD_GET_FEATURES, 0, NULL, 0, &r, sizeof(r));
+ if (rv != sizeof(r))
+ return -EIO;
+
+ if (feature >= 8 * sizeof(r.flags))
+ return -EINVAL;
+
+ return r.flags[feature / 32] & EC_FEATURE_MASK_0(feature) ? true :
+ false;
+}
+
+/*
+ * Query the EC for specified mask indicating enabled events.
+ * The EC maintains separate event masks for SMI, SCI and WAKE.
+ */
+static int cros_ec_uhepi_cmd(struct udevice *dev, uint mask, uint action,
+ uint64_t *value)
+{
+ int ret;
+ struct ec_params_host_event req;
+ struct ec_response_host_event rsp;
+
+ req.action = action;
+ req.mask_type = mask;
+ if (action != EC_HOST_EVENT_GET)
+ req.value = *value;
+ else
+ *value = 0;
+ ret = ec_command(dev, EC_CMD_HOST_EVENT, 0, &req, sizeof(req), &rsp,
+ sizeof(rsp));
+
+ if (action != EC_HOST_EVENT_GET)
+ return ret;
+ if (ret == 0)
+ *value = rsp.value;
+
+ return ret;
+}
+
+static int cros_ec_handle_non_uhepi_cmd(struct udevice *dev, uint hcmd,
+ uint action, uint64_t *value)
+{
+ int ret = -1;
+ struct ec_params_host_event_mask req;
+ struct ec_response_host_event_mask rsp;
+
+ if (hcmd == INVALID_HCMD)
+ return ret;
+
+ if (action != EC_HOST_EVENT_GET)
+ req.mask = (uint32_t)*value;
+ else
+ *value = 0;
+
+ ret = ec_command(dev, hcmd, 0, &req, sizeof(req), &rsp, sizeof(rsp));
+ if (action != EC_HOST_EVENT_GET)
+ return ret;
+ if (ret == 0)
+ *value = rsp.mask;
+
+ return ret;
+}
+
+bool cros_ec_is_uhepi_supported(struct udevice *dev)
+{
+#define UHEPI_SUPPORTED 1
+#define UHEPI_NOT_SUPPORTED 2
+ static int uhepi_support;
+
+ if (!uhepi_support) {
+ uhepi_support = cros_ec_check_feature(dev,
+ EC_FEATURE_UNIFIED_WAKE_MASKS) > 0 ? UHEPI_SUPPORTED :
+ UHEPI_NOT_SUPPORTED;
+ log_debug("Chrome EC: UHEPI %s\n",
+ uhepi_support == UHEPI_SUPPORTED ? "supported" :
+ "not supported");
+ }
+ return uhepi_support == UHEPI_SUPPORTED;
+}
+
+static int cros_ec_get_mask(struct udevice *dev, uint type)
+{
+ u64 value = 0;
+
+ if (cros_ec_is_uhepi_supported(dev)) {
+ cros_ec_uhepi_cmd(dev, type, EC_HOST_EVENT_GET, &value);
+ } else {
+ assert(type < ARRAY_SIZE(event_map));
+ cros_ec_handle_non_uhepi_cmd(dev, event_map[type].get_cmd,
+ EC_HOST_EVENT_GET, &value);
+ }
+ return value;
+}
+
+static int cros_ec_clear_mask(struct udevice *dev, uint type, u64 mask)
+{
+ if (cros_ec_is_uhepi_supported(dev))
+ return cros_ec_uhepi_cmd(dev, type, EC_HOST_EVENT_CLEAR, &mask);
+
+ assert(type < ARRAY_SIZE(event_map));
+
+ return cros_ec_handle_non_uhepi_cmd(dev, event_map[type].clear_cmd,
+ EC_HOST_EVENT_CLEAR, &mask);
+}
+
+uint64_t cros_ec_get_events_b(struct udevice *dev)
+{
+ return cros_ec_get_mask(dev, EC_HOST_EVENT_B);
+}
+
+int cros_ec_clear_events_b(struct udevice *dev, uint64_t mask)
+{
+ log_debug("Chrome EC: clear events_b mask to 0x%016llx\n", mask);
+
+ return cros_ec_clear_mask(dev, EC_HOST_EVENT_B, mask);
+}
+
+int cros_ec_read_limit_power(struct udevice *dev, int *limit_powerp)
+{
+ struct ec_params_charge_state p;
+ struct ec_response_charge_state r;
+ int ret;
+
+ p.cmd = CHARGE_STATE_CMD_GET_PARAM;
+ p.get_param.param = CS_PARAM_LIMIT_POWER;
+ ret = ec_command(dev, EC_CMD_CHARGE_STATE, 0, &p, sizeof(p),
+ &r, sizeof(r));
+
+ /*
+ * If our EC doesn't support the LIMIT_POWER parameter, assume that
+ * LIMIT_POWER is not requested.
+ */
+ if (ret == -EC_RES_INVALID_PARAM || ret == -EC_RES_INVALID_COMMAND) {
+ log_warning("PARAM_LIMIT_POWER not supported by EC\n");
+ return -ENOSYS;
+ }
+
+ if (ret != sizeof(r.get_param))
+ return -EINVAL;
+
+ *limit_powerp = r.get_param.value;
+ return 0;
+}
+
+int cros_ec_config_powerbtn(struct udevice *dev, uint32_t flags)
+{
+ struct ec_params_config_power_button params;
+ int ret;
+
+ params.flags = flags;
+ ret = ec_command(dev, EC_CMD_CONFIG_POWER_BUTTON, 0,
+ ¶ms, sizeof(params), NULL, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+int cros_ec_get_lid_shutdown_mask(struct udevice *dev)
+{
+ u32 mask;
+ int ret;
+
+ ret = cros_ec_get_event_mask(dev, EC_CMD_HOST_EVENT_GET_SMI_MASK,
+ &mask);
+ if (ret < 0)
+ return ret;
+
+ return !!(mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED));
+}
+
+int cros_ec_set_lid_shutdown_mask(struct udevice *dev, int enable)
+{
+ u32 mask;
+ int ret;
+
+ ret = cros_ec_get_event_mask(dev, EC_CMD_HOST_EVENT_GET_SMI_MASK,
+ &mask);
+ if (ret < 0)
+ return ret;
+
+ /* Set lid close event state in the EC SMI event mask */
+ if (enable)
+ mask |= EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED);
+ else
+ mask &= ~EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED);
+
+ ret = cros_ec_set_event_mask(dev, EC_CMD_HOST_EVENT_SET_SMI_MASK, mask);
+ if (ret < 0)
+ return ret;
+
+ printf("EC: %sabled lid close event\n", enable ? "en" : "dis");
+ return 0;
+}
+
+int cros_ec_vstore_supported(struct udevice *dev)
+{
+ return cros_ec_check_feature(dev, EC_FEATURE_VSTORE);
+}
+
+int cros_ec_vstore_info(struct udevice *dev, u32 *lockedp)
+{
+ struct ec_response_vstore_info *resp;
+
+ if (ec_command_inptr(dev, EC_CMD_VSTORE_INFO, 0, NULL, 0,
+ (uint8_t **)&resp, sizeof(*resp)) != sizeof(*resp))
+ return -EIO;
+
+ if (lockedp)
+ *lockedp = resp->slot_locked;
+
+ return resp->slot_count;
+}
+
+/*
+ * cros_ec_vstore_read - Read data from EC vstore slot
+ *
+ * @slot: vstore slot to read from
+ * @data: buffer to store read data, must be EC_VSTORE_SLOT_SIZE bytes
+ */
+int cros_ec_vstore_read(struct udevice *dev, int slot, uint8_t *data)
+{
+ struct ec_params_vstore_read req;
+ struct ec_response_vstore_read *resp;
+
+ req.slot = slot;
+ if (ec_command_inptr(dev, EC_CMD_VSTORE_READ, 0, &req, sizeof(req),
+ (uint8_t **)&resp, sizeof(*resp)) != sizeof(*resp))
+ return -EIO;
+
+ if (!data || req.slot >= EC_VSTORE_SLOT_MAX)
+ return -EINVAL;
+
+ memcpy(data, resp->data, sizeof(resp->data));
+
+ return 0;
+}
+
+/*
+ * cros_ec_vstore_write - Save data into EC vstore slot
+ *
+ * @slot: vstore slot to write into
+ * @data: data to write
+ * @size: size of data in bytes
+ *
+ * Maximum size of data is EC_VSTORE_SLOT_SIZE. It is the callers
+ * responsibility to check the number of implemented slots by
+ * querying the vstore info.
+ */
+int cros_ec_vstore_write(struct udevice *dev, int slot, const uint8_t *data,
+ size_t size)
+{
+ struct ec_params_vstore_write req;
+
+ if (slot >= EC_VSTORE_SLOT_MAX || size > EC_VSTORE_SLOT_SIZE)
+ return -EINVAL;
+
+ req.slot = slot;
+ memcpy(req.data, data, size);
+
+ if (ec_command(dev, EC_CMD_VSTORE_WRITE, 0, &req, sizeof(req), NULL, 0))
+ return -EIO;
+
+ return 0;
+}
+
+int cros_ec_get_switches(struct udevice *dev)
+{
+ struct dm_cros_ec_ops *ops;
+ int ret;
+
+ ops = dm_cros_ec_get_ops(dev);
+ if (!ops->get_switches)
+ return -ENOSYS;
+
+ ret = ops->get_switches(dev);
+ if (ret < 0)
+ return log_msg_ret("get", ret);
+
+ return ret;
+}
+
+int cros_ec_read_batt_charge(struct udevice *dev, uint *chargep)
+{
+ struct ec_params_charge_state req;
+ struct ec_response_charge_state resp;
+ int ret;
+
+ req.cmd = CHARGE_STATE_CMD_GET_STATE;
+ ret = ec_command(dev, EC_CMD_CHARGE_STATE, 0, &req, sizeof(req),
+ &resp, sizeof(resp));
+ if (ret)
+ return log_msg_ret("read", ret);
+
+ *chargep = resp.get_state.batt_state_of_charge;
+
+ return 0;
+}
+
UCLASS_DRIVER(cros_ec) = {
.id = UCLASS_CROS_EC,
- .name = "cros_ec",
- .per_device_auto_alloc_size = sizeof(struct cros_ec_dev),
+ .name = "cros-ec",
+ .per_device_auto = sizeof(struct cros_ec_dev),
+#if CONFIG_IS_ENABLED(OF_REAL)
.post_bind = dm_scan_fdt_dev,
+#endif
+ .flags = DM_UC_FLAG_ALLOC_PRIV_DMA,
};
projects / platform / kernel / u-boot.git / blobdiff