/* This will free ipmi_sys_boot_opt structure */
int ipmi_chassis_check_sbe_validation(void)
{
int rc = -1;
while (bmc_boot_opt_waiting)
time_wait_ms(10);
if (!bmc_boot_opt_valid)
goto out;
if ((ipmi_sys_boot_opt->param_valid & 0x8) != 0)
goto out;
if (ipmi_sys_boot_opt->param_valid != 0x62)
goto out;
rc = ipmi_sys_boot_opt->flag_set;
out:
free(ipmi_sys_boot_opt);
return rc;
}
/* This will free ipmi_dev_id structure */
void ipmi_dt_add_bmc_info(void)
{
char buf[8];
struct dt_node *dt_fw_version;
while (bmc_info_waiting)
time_wait_ms(5);
if (!bmc_info_valid)
return;
dt_fw_version = dt_find_by_name(dt_root, "ibm,firmware-versions");
if (!dt_fw_version) {
free(ipmi_dev_id);
return;
}
memset(buf, 0, sizeof(buf));
snprintf(buf, sizeof(buf), "%x.%02x",
ipmi_dev_id->fw_rev1, ipmi_dev_id->fw_rev2);
dt_add_property_string(dt_fw_version, "bmc-firmware-version", buf);
free(ipmi_dev_id);
}
/**
* tpm_i2c_request_send - send request to i2c bus
* @tpm_bus_id: i2c bus id
* @tpm_dev_addr: address of the tpm device
* @read_write: SMBUS_READ or SMBUS_WRITE
* @offset: any of the I2C interface offset defined
* @offset_bytes: offset size in bytes
* @buf: data to be read or written
* @buflen: buf length
*
* This interacts with skiboot i2c API to send an I2C request to the tpm
* device
*
* Returns: Zero on success otherwise a negative error code
*/
int tpm_i2c_request_send(int tpm_bus_id, int tpm_dev_addr, int read_write,
uint32_t offset, uint32_t offset_bytes, void* buf,
size_t buflen)
{
int rc, waited, retries, timeout;
struct i2c_request *req;
struct i2c_bus *bus;
bus = i2c_find_bus_by_id(tpm_bus_id);
if (!bus) {
/**
* @fwts-label TPMI2CInvalidBusID
* @fwts-advice tpm_i2c_request_send was passed an invalid bus
* ID. This indicates a tb_init() bug.
*/
prlog(PR_ERR, "TPM: Invalid bus_id=%x\n", tpm_bus_id);
rc = STB_ARG_ERROR;
goto out;
}
req = i2c_alloc_req(bus);
if (!req) {
/**
* @fwts-label TPMI2CAllocationFailed
* @fwts-advice OPAL failed to allocate memory for an
* i2c_request. This points to an OPAL bug as OPAL run out of
* memory and this should never happen.
*/
prlog(PR_ERR, "TPM: i2c_alloc_req failed\n");
rc = STB_DRIVER_ERROR;
goto out;
}
req->dev_addr = tpm_dev_addr;
req->op = read_write;
req->offset = offset;
req->offset_bytes = offset_bytes;
req->rw_buf = (void*) buf;
req->rw_len = buflen;
req->completion = tpm_i2c_request_complete;
req->user_data = &rc;
/*
* Set the request timeout to 10ms per byte. Otherwise, we get
* an I2C master timeout for all requests sent to the TPM device
* since the I2C master's timeout is too short (1ms per byte).
*/
timeout = (buflen + offset_bytes + 2) * I2C_BYTE_TIMEOUT_MS;
i2c_set_req_timeout(req, timeout);
for (retries = 0; retries <= TPM_MAX_NACK_RETRIES; retries++) {
rc = 1;
waited = 0;
i2c_queue_req(req);
do {
time_wait_ms(REQ_COMPLETE_POLLING);
waited += REQ_COMPLETE_POLLING;
} while (waited < timeout && rc == 1);
if (rc == OPAL_I2C_NACK_RCVD)
continue;
else
/* error or success */
break;
}
DBG("%s tpm req op=%x offset=%x buf=%016llx buflen=%d delay=%d/%d,"
"rc=%d\n",
(rc) ? "!!!!" : "----", req->op, req->offset,
*(uint64_t*) buf, req->rw_len, waited, timeout, rc);
i2c_free_req(req);
if (rc)
rc = STB_DRIVER_ERROR;
out:
return rc;
}
