1 /* 2 * QEMU PowerNV, BMC related functions 3 * 4 * Copyright (c) 2016-2017, IBM Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License, version 2, as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #include "qemu/osdep.h" 20 #include "target/ppc/cpu.h" 21 #include "qemu/log.h" 22 #include "hw/ipmi/ipmi.h" 23 #include "hw/ppc/fdt.h" 24 25 #include "hw/ppc/pnv.h" 26 27 #include <libfdt.h> 28 29 /* TODO: include definition in ipmi.h */ 30 #define IPMI_SDR_FULL_TYPE 1 31 32 /* 33 * OEM SEL Event data packet sent by BMC in response of a Read Event 34 * Message Buffer command 35 */ 36 typedef struct OemSel { 37 /* SEL header */ 38 uint8_t id[2]; 39 uint8_t type; 40 uint8_t timestamp[4]; 41 uint8_t manuf_id[3]; 42 43 /* OEM SEL data (6 bytes) follows */ 44 uint8_t netfun; 45 uint8_t cmd; 46 uint8_t data[4]; 47 } OemSel; 48 49 #define SOFT_OFF 0x00 50 #define SOFT_REBOOT 0x01 51 52 static void pnv_gen_oem_sel(IPMIBmc *bmc, uint8_t reboot) 53 { 54 /* IPMI SEL Event are 16 bytes long */ 55 OemSel sel = { 56 .id = { 0x55 , 0x55 }, 57 .type = 0xC0, /* OEM */ 58 .manuf_id = { 0x0, 0x0, 0x0 }, 59 .timestamp = { 0x0, 0x0, 0x0, 0x0 }, 60 .netfun = 0x3A, /* IBM */ 61 .cmd = 0x04, /* AMI OEM SEL Power Notification */ 62 .data = { reboot, 0xFF, 0xFF, 0xFF }, 63 }; 64 65 ipmi_bmc_gen_event(bmc, (uint8_t *) &sel, 0 /* do not log the event */); 66 } 67 68 void pnv_bmc_powerdown(IPMIBmc *bmc) 69 { 70 pnv_gen_oem_sel(bmc, SOFT_OFF); 71 } 72 73 void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt) 74 { 75 int offset; 76 int i; 77 const struct ipmi_sdr_compact *sdr; 78 uint16_t nextrec; 79 80 offset = fdt_add_subnode(fdt, 0, "bmc"); 81 _FDT(offset); 82 83 _FDT((fdt_setprop_string(fdt, offset, "name", "bmc"))); 84 offset = fdt_add_subnode(fdt, offset, "sensors"); 85 _FDT(offset); 86 87 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); 88 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); 89 90 for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) { 91 int off; 92 char *name; 93 94 if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE && 95 sdr->header.rec_type != IPMI_SDR_FULL_TYPE) { 96 continue; 97 } 98 99 name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number); 100 off = fdt_add_subnode(fdt, offset, name); 101 _FDT(off); 102 g_free(name); 103 104 _FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number))); 105 _FDT((fdt_setprop_string(fdt, off, "name", "sensor"))); 106 _FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor"))); 107 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type", 108 sdr->reading_type))); 109 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id", 110 sdr->entity_id))); 111 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance", 112 sdr->entity_instance))); 113 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type", 114 sdr->sensor_type))); 115 } 116 } 117