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bce0b69159
OpenPOWER systems expect to be notified with such an event before a shutdown or a reboot. An OEM SEL message is sent with specific identifiers and a user data containing the request : OFF or REBOOT. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*
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* QEMU PowerNV, BMC related functions
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*
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* Copyright (c) 2016-2017, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "hw/hw.h"
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#include "sysemu/sysemu.h"
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#include "target/ppc/cpu.h"
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#include "qapi/error.h"
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#include "qemu/log.h"
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#include "hw/ipmi/ipmi.h"
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#include "hw/ppc/fdt.h"
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#include "hw/ppc/pnv.h"
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#include <libfdt.h>
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/* TODO: include definition in ipmi.h */
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#define IPMI_SDR_FULL_TYPE 1
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/*
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* OEM SEL Event data packet sent by BMC in response of a Read Event
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* Message Buffer command
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*/
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typedef struct OemSel {
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/* SEL header */
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uint8_t id[2];
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uint8_t type;
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uint8_t timestamp[4];
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uint8_t manuf_id[3];
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/* OEM SEL data (6 bytes) follows */
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uint8_t netfun;
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uint8_t cmd;
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uint8_t data[4];
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} OemSel;
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#define SOFT_OFF 0x00
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#define SOFT_REBOOT 0x01
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static void pnv_gen_oem_sel(IPMIBmc *bmc, uint8_t reboot)
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{
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/* IPMI SEL Event are 16 bytes long */
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OemSel sel = {
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.id = { 0x55 , 0x55 },
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.type = 0xC0, /* OEM */
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.manuf_id = { 0x0, 0x0, 0x0 },
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.timestamp = { 0x0, 0x0, 0x0, 0x0 },
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.netfun = 0x3A, /* IBM */
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.cmd = 0x04, /* AMI OEM SEL Power Notification */
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.data = { reboot, 0xFF, 0xFF, 0xFF },
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};
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ipmi_bmc_gen_event(bmc, (uint8_t *) &sel, 0 /* do not log the event */);
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}
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void pnv_bmc_powerdown(IPMIBmc *bmc)
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{
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pnv_gen_oem_sel(bmc, SOFT_OFF);
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}
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void pnv_bmc_populate_sensors(IPMIBmc *bmc, void *fdt)
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{
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int offset;
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int i;
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const struct ipmi_sdr_compact *sdr;
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uint16_t nextrec;
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offset = fdt_add_subnode(fdt, 0, "/bmc");
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_FDT(offset);
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_FDT((fdt_setprop_string(fdt, offset, "name", "bmc")));
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_FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1)));
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_FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0)));
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offset = fdt_add_subnode(fdt, offset, "sensors");
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_FDT(offset);
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_FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1)));
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_FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0)));
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for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) {
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int off;
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char *name;
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if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE &&
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sdr->header.rec_type != IPMI_SDR_FULL_TYPE) {
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continue;
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}
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name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number);
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off = fdt_add_subnode(fdt, offset, name);
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_FDT(off);
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g_free(name);
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_FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number)));
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_FDT((fdt_setprop_string(fdt, off, "name", "sensor")));
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_FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor")));
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_FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type",
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sdr->reading_type)));
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_FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id",
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sdr->entity_id)));
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_FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance",
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sdr->entity_instance)));
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_FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type",
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sdr->sensor_type)));
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}
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}
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