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 "hw/hw.h" 21 #include "sysemu/sysemu.h" 22 #include "target/ppc/cpu.h" 23 #include "qemu/log.h" 24 #include "hw/ipmi/ipmi.h" 25 #include "hw/ppc/fdt.h" 26 27 #include "hw/ppc/pnv.h" 28 29 #include <libfdt.h> 30 31 /* TODO: include definition in ipmi.h */ 32 #define IPMI_SDR_FULL_TYPE 1 33 34 /* 35 * OEM SEL Event data packet sent by BMC in response of a Read Event 36 * Message Buffer command 37 */ 38 typedef struct OemSel { 39 /* SEL header */ 40 uint8_t id[2]; 41 uint8_t type; 42 uint8_t timestamp[4]; 43 uint8_t manuf_id[3]; 44 45 /* OEM SEL data (6 bytes) follows */ 46 uint8_t netfun; 47 uint8_t cmd; 48 uint8_t data[4]; 49 } OemSel; 50 51 #define SOFT_OFF 0x00 52 #define SOFT_REBOOT 0x01 53 54 static void pnv_gen_oem_sel(IPMIBmc *bmc, uint8_t reboot) 55 { 56 /* IPMI SEL Event are 16 bytes long */ 57 OemSel sel = { 58 .id = { 0x55 , 0x55 }, 59 .type = 0xC0, /* OEM */ 60 .manuf_id = { 0x0, 0x0, 0x0 }, 61 .timestamp = { 0x0, 0x0, 0x0, 0x0 }, 62 .netfun = 0x3A, /* IBM */ 63 .cmd = 0x04, /* AMI OEM SEL Power Notification */ 64 .data = { reboot, 0xFF, 0xFF, 0xFF }, 65 }; 66 67 ipmi_bmc_gen_event(bmc, (uint8_t *) &sel, 0 /* do not log the event */); 68 } 69 70 void pnv_bmc_powerdown(IPMIBmc *bmc) 71 { 72 pnv_gen_oem_sel(bmc, SOFT_OFF); 73 } 74 75 void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt) 76 { 77 int offset; 78 int i; 79 const struct ipmi_sdr_compact *sdr; 80 uint16_t nextrec; 81 82 offset = fdt_add_subnode(fdt, 0, "/bmc"); 83 _FDT(offset); 84 85 _FDT((fdt_setprop_string(fdt, offset, "name", "bmc"))); 86 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); 87 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); 88 89 offset = fdt_add_subnode(fdt, offset, "sensors"); 90 _FDT(offset); 91 92 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); 93 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); 94 95 for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) { 96 int off; 97 char *name; 98 99 if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE && 100 sdr->header.rec_type != IPMI_SDR_FULL_TYPE) { 101 continue; 102 } 103 104 name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number); 105 off = fdt_add_subnode(fdt, offset, name); 106 _FDT(off); 107 g_free(name); 108 109 _FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number))); 110 _FDT((fdt_setprop_string(fdt, off, "name", "sensor"))); 111 _FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor"))); 112 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type", 113 sdr->reading_type))); 114 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id", 115 sdr->entity_id))); 116 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance", 117 sdr->entity_instance))); 118 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type", 119 sdr->sensor_type))); 120 } 121 } 122