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// SPDX-License-Identifier: Apache-2.0
/*
* Various bits of info retreived over IPMI
*
* Copyright 2018-2019 IBM Corp.
*/
#include <device.h>
#include <skiboot.h>
#include <stdlib.h>
#include <ipmi.h>
#include <mem_region-malloc.h>
#include <opal.h>
#include <timebase.h>
/*
* Response data from IPMI Get device ID command (As defined in
* Section 20.1 Get Device ID Command - IPMI standard spec).
*/
struct ipmi_dev_id {
uint8_t dev_id;
uint8_t dev_revision;
uint8_t fw_rev1;
uint8_t fw_rev2;
uint8_t ipmi_ver;
uint8_t add_dev_support;
uint8_t manufactur_id[3];
uint8_t product_id[2];
uint8_t aux_fw_rev[4];
};
static struct ipmi_dev_id *ipmi_dev_id;
/*
* Response data from IPMI Chassis Get System Boot Option (As defined in
* Section 28.13 Get System Boot Options Command - IPMI standard spec).
*/
struct ipmi_sys_boot_opt {
uint8_t param_version;
uint8_t param_valid;
/*
* Fields for OEM parameter 0x62. This parameter does not follow
* the normal layout and just has a single byte to signal if it
* is active or not.
*/
uint8_t flag_set;
};
static struct ipmi_sys_boot_opt *ipmi_sys_boot_opt;
/* Got response from BMC? */
static bool bmc_info_waiting = false;
static bool bmc_info_valid = false;
static bool bmc_boot_opt_waiting = false;
static bool bmc_boot_opt_valid = false;
/* 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);
}
static void ipmi_get_bmc_info_resp(struct ipmi_msg *msg)
{
bmc_info_waiting = false;
if (msg->cc != IPMI_CC_NO_ERROR) {
prlog(PR_ERR, "IPMI: IPMI_BMC_GET_DEVICE_ID cmd returned error"
" [rc : 0x%x]\n", msg->data[0]);
return;
}
/* ipmi_dev_id has optional fields */
if (msg->resp_size <= sizeof(struct ipmi_dev_id)) {
bmc_info_valid = true;
memcpy(ipmi_dev_id, msg->data, msg->resp_size);
} else {
prlog(PR_WARNING, "IPMI: IPMI_BMC_GET_DEVICE_ID unexpected response size\n");
}
ipmi_free_msg(msg);
}
int ipmi_get_bmc_info_request(void)
{
int rc;
struct ipmi_msg *msg;
ipmi_dev_id = zalloc(sizeof(struct ipmi_dev_id));
assert(ipmi_dev_id);
msg = ipmi_mkmsg(IPMI_DEFAULT_INTERFACE, IPMI_BMC_GET_DEVICE_ID,
ipmi_get_bmc_info_resp, NULL, NULL,
0, sizeof(struct ipmi_dev_id));
if (!msg)
return OPAL_NO_MEM;
msg->error = ipmi_get_bmc_info_resp;
prlog(PR_INFO, "IPMI: Requesting IPMI_BMC_GET_DEVICE_ID\n");
rc = ipmi_queue_msg(msg);
if (rc) {
prlog(PR_ERR, "IPMI: Failed to queue IPMI_BMC_GET_DEVICE_ID\n");
ipmi_free_msg(msg);
return rc;
}
bmc_info_waiting = true;
return rc;
}
/* 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;
}
static void ipmi_get_chassis_boot_opt_resp(struct ipmi_msg *msg)
{
bmc_boot_opt_waiting = false;
if (msg->cc != IPMI_CC_NO_ERROR) {
prlog(PR_INFO, "IPMI: IPMI_CHASSIS_GET_BOOT_OPT cmd returned error"
" [rc : 0x%x]\n", msg->data[0]);
ipmi_free_msg(msg);
return;
}
if (msg->resp_size == sizeof(struct ipmi_sys_boot_opt)) {
bmc_boot_opt_valid = true;
memcpy(ipmi_sys_boot_opt, msg->data, msg->resp_size);
} else {
prlog(PR_WARNING, "IPMI: IPMI_CHASSIS_GET_BOOT_OPT unexpected response size\n");
}
ipmi_free_msg(msg);
}
int ipmi_get_chassis_boot_opt_request(void)
{
int rc;
struct ipmi_msg *msg;
uint8_t req[] = {
0x62, /* OEM parameter (SBE Validation on astbmc) */
0x00, /* no set selector */
0x00, /* no block selector */
};
ipmi_sys_boot_opt = zalloc(sizeof(struct ipmi_sys_boot_opt));
assert(ipmi_sys_boot_opt);
msg = ipmi_mkmsg(IPMI_DEFAULT_INTERFACE, IPMI_CHASSIS_GET_BOOT_OPT,
ipmi_get_chassis_boot_opt_resp, NULL, req,
sizeof(req), sizeof(struct ipmi_sys_boot_opt));
if (!msg) {
free(ipmi_sys_boot_opt);
return OPAL_NO_MEM;
}
msg->error = ipmi_get_chassis_boot_opt_resp;
prlog(PR_INFO, "IPMI: Requesting IPMI_CHASSIS_GET_BOOT_OPT\n");
rc = ipmi_queue_msg(msg);
if (rc) {
prlog(PR_ERR, "IPMI: Failed to queue IPMI_CHASSIS_GET_BOOT_OPT\n");
free(ipmi_sys_boot_opt);
ipmi_free_msg(msg);
return rc;
}
bmc_boot_opt_waiting = true;
return rc;
}
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