ipmi.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <console/console.h>
#include <drivers/ipmi/ipmi_kcs.h>
#include <drivers/ipmi/ipmi_ops.h>
#include <drivers/ipmi/ocp/ipmi_ocp.h>
#include <drivers/vpd/vpd.h>
 
#include "ipmi.h"
#include "vpd.h"
 
enum cb_err ipmi_get_pcie_config(uint8_t *pcie_config)
{
        int ret;
        struct ipmi_config_rsp {
                struct ipmi_rsp resp;
                uint8_t config;
        } __packed;
        struct ipmi_config_rsp rsp;
 
        ret = ipmi_kcs_message(CONFIG_BMC_KCS_BASE, IPMI_NETFN_OEM, 0x0,
                        IPMI_OEM_GET_PCIE_CONFIG, NULL, 0, (unsigned char *) &rsp,
                        sizeof(rsp));
 
        if (ret < sizeof(struct ipmi_rsp) || rsp.resp.completion_code) {
                printk(BIOS_ERR, "IPMI: %s command failed (ret=%d resp=0x%x)\n",
                        __func__, ret, rsp.resp.completion_code);
                return CB_ERR;
        }
        *pcie_config = rsp.config;
 
        return CB_SUCCESS;
}
 
enum cb_err ipmi_get_slot_id(uint8_t *slot_id)
{
        int ret;
        struct ipmi_config_rsp {
                struct ipmi_rsp resp;
                uint8_t board_sku_id;
                uint8_t board_rev_id;
                uint8_t slot_id;
                uint8_t slot_config_id;
        } __packed;
        struct ipmi_config_rsp rsp;
 
        ret = ipmi_kcs_message(CONFIG_BMC_KCS_BASE, IPMI_NETFN_OEM, 0x0, IPMI_OEM_GET_BOARD_ID,
                        NULL, 0, (unsigned char *) &rsp, sizeof(rsp));
 
        if (ret < sizeof(struct ipmi_rsp) || rsp.resp.completion_code) {
                printk(BIOS_ERR, "IPMI: %s command failed (ret=%d resp=0x%x)\n",
                        __func__, ret, rsp.resp.completion_code);
                return CB_ERR;
        }
        *slot_id = rsp.slot_id;
 
        return CB_SUCCESS;
}
 
void init_frb2_wdt(void)
{
        uint8_t enable;
        int action, countdown;
 
        if (vpd_get_bool(FRB2_TIMER, VPD_RW_THEN_RO, &enable)) {
                printk(BIOS_DEBUG, "Got VPD %s value: %d\n", FRB2_TIMER, enable);
        } else {
                printk(BIOS_INFO, "Not able to get VPD %s, default set to %d\n", FRB2_TIMER,
                        FRB2_TIMER_DEFAULT);
                enable = FRB2_TIMER_DEFAULT;
        }
 
        if (enable) {
                if (vpd_get_int(FRB2_COUNTDOWN, VPD_RW_THEN_RO, &countdown)) {
                        printk(BIOS_DEBUG, "FRB2 timer countdown set to: %d ms\n",
                                countdown * 100);
                } else {
                        printk(BIOS_DEBUG, "FRB2 timer use default value: %d ms\n",
                                FRB2_COUNTDOWN_DEFAULT * 100);
                        countdown = FRB2_COUNTDOWN_DEFAULT;
                }
 
                if (vpd_get_int(FRB2_ACTION, VPD_RW_THEN_RO, &action)) {
                        printk(BIOS_DEBUG, "FRB2 timer action set to: %d\n", action);
                } else {
                        printk(BIOS_DEBUG, "FRB2 timer action use default value: %d\n",
                                FRB2_ACTION_DEFAULT);
                        action = FRB2_ACTION_DEFAULT;
                }
                ipmi_init_and_start_bmc_wdt(CONFIG_BMC_KCS_BASE, (uint16_t)countdown,
                        (uint8_t)action);
        } else {
                printk(BIOS_DEBUG, "Disable FRB2 timer\n");
                ipmi_stop_bmc_wdt(CONFIG_BMC_KCS_BASE);
        }
}