1 /* 2 * Copyright 2014 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs <bskeggs@redhat.com> 23 */ 24 #include <subdev/bios.h> 25 #include <subdev/bios/bit.h> 26 #include <subdev/bios/image.h> 27 #include <subdev/bios/pmu.h> 28 29 u32 30 nvbios_pmuTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) 31 { 32 struct bit_entry bit_p; 33 u32 data = 0; 34 35 if (!bit_entry(bios, 'p', &bit_p)) { 36 if (bit_p.version == 2 && bit_p.length >= 4) 37 data = nvbios_rd32(bios, bit_p.offset + 0x00); 38 if (data) { 39 *ver = nvbios_rd08(bios, data + 0x00); /* maybe? */ 40 *hdr = nvbios_rd08(bios, data + 0x01); 41 *len = nvbios_rd08(bios, data + 0x02); 42 *cnt = nvbios_rd08(bios, data + 0x03); 43 } 44 } 45 46 return data; 47 } 48 49 u32 50 nvbios_pmuEe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr) 51 { 52 u8 cnt, len; 53 u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len); 54 if (data && idx < cnt) { 55 data = data + *hdr + (idx * len); 56 *hdr = len; 57 return data; 58 } 59 return 0; 60 } 61 62 u32 63 nvbios_pmuEp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr, 64 struct nvbios_pmuE *info) 65 { 66 u32 data = nvbios_pmuEe(bios, idx, ver, hdr); 67 if (data) { 68 info->type = nvbios_rd08(bios, data + 0x00); 69 info->data = nvbios_rd32(bios, data + 0x02); 70 } 71 return data; 72 } 73 74 bool 75 nvbios_pmuRm(struct nvkm_bios *bios, u8 type, struct nvbios_pmuR *info) 76 { 77 struct nvbios_pmuE pmuE; 78 u8 ver, hdr, idx = 0; 79 u32 data; 80 memset(info, 0x00, sizeof(*info)); 81 while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) { 82 if (pmuE.type == type && (data = pmuE.data)) { 83 info->init_addr_pmu = nvbios_rd32(bios, data + 0x08); 84 info->args_addr_pmu = nvbios_rd32(bios, data + 0x0c); 85 info->boot_addr = data + 0x30; 86 info->boot_addr_pmu = nvbios_rd32(bios, data + 0x10) + 87 nvbios_rd32(bios, data + 0x18); 88 info->boot_size = nvbios_rd32(bios, data + 0x1c) - 89 nvbios_rd32(bios, data + 0x18); 90 info->code_addr = info->boot_addr + info->boot_size; 91 info->code_addr_pmu = info->boot_addr_pmu + 92 info->boot_size; 93 info->code_size = nvbios_rd32(bios, data + 0x20); 94 info->data_addr = data + 0x30 + 95 nvbios_rd32(bios, data + 0x24); 96 info->data_addr_pmu = nvbios_rd32(bios, data + 0x28); 97 info->data_size = nvbios_rd32(bios, data + 0x2c); 98 return true; 99 } 100 } 101 return false; 102 } 103