/* 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; }