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 "sysemu/sysemu.h" 21 #include "target/ppc/cpu.h" 22 #include "qemu/log.h" 23 #include "hw/ipmi/ipmi.h" 24 #include "hw/ppc/fdt.h" 25 26 #include "hw/ppc/pnv.h" 27 28 #include <libfdt.h> 29 30 /* TODO: include definition in ipmi.h */ 31 #define IPMI_SDR_FULL_TYPE 1 32 33 /* 34 * OEM SEL Event data packet sent by BMC in response of a Read Event 35 * Message Buffer command 36 */ 37 typedef struct OemSel { 38 /* SEL header */ 39 uint8_t id[2]; 40 uint8_t type; 41 uint8_t timestamp[4]; 42 uint8_t manuf_id[3]; 43 44 /* OEM SEL data (6 bytes) follows */ 45 uint8_t netfun; 46 uint8_t cmd; 47 uint8_t data[4]; 48 } OemSel; 49 50 #define SOFT_OFF 0x00 51 #define SOFT_REBOOT 0x01 52 53 static void pnv_gen_oem_sel(IPMIBmc *bmc, uint8_t reboot) 54 { 55 /* IPMI SEL Event are 16 bytes long */ 56 OemSel sel = { 57 .id = { 0x55 , 0x55 }, 58 .type = 0xC0, /* OEM */ 59 .manuf_id = { 0x0, 0x0, 0x0 }, 60 .timestamp = { 0x0, 0x0, 0x0, 0x0 }, 61 .netfun = 0x3A, /* IBM */ 62 .cmd = 0x04, /* AMI OEM SEL Power Notification */ 63 .data = { reboot, 0xFF, 0xFF, 0xFF }, 64 }; 65 66 ipmi_bmc_gen_event(bmc, (uint8_t *) &sel, 0 /* do not log the event */); 67 } 68 69 void pnv_bmc_powerdown(IPMIBmc *bmc) 70 { 71 pnv_gen_oem_sel(bmc, SOFT_OFF); 72 } 73 74 void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt) 75 { 76 int offset; 77 int i; 78 const struct ipmi_sdr_compact *sdr; 79 uint16_t nextrec; 80 81 offset = fdt_add_subnode(fdt, 0, "/bmc"); 82 _FDT(offset); 83 84 _FDT((fdt_setprop_string(fdt, offset, "name", "bmc"))); 85 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); 86 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); 87 88 offset = fdt_add_subnode(fdt, offset, "sensors"); 89 _FDT(offset); 90 91 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); 92 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); 93 94 for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) { 95 int off; 96 char *name; 97 98 if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE && 99 sdr->header.rec_type != IPMI_SDR_FULL_TYPE) { 100 continue; 101 } 102 103 name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number); 104 off = fdt_add_subnode(fdt, offset, name); 105 _FDT(off); 106 g_free(name); 107 108 _FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number))); 109 _FDT((fdt_setprop_string(fdt, off, "name", "sensor"))); 110 _FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor"))); 111 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type", 112 sdr->reading_type))); 113 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id", 114 sdr->entity_id))); 115 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance", 116 sdr->entity_instance))); 117 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type", 118 sdr->sensor_type))); 119 } 120 } 121