| /* |
| * Copyright 2014 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Ben Skeggs <bskeggs@redhat.com> |
| */ |
| #include <subdev/bios.h> |
| #include <subdev/bios/image.h> |
| #include <subdev/bios/pcir.h> |
| #include <subdev/bios/npde.h> |
| |
| static bool |
| nvbios_imagen(struct nvkm_bios *bios, struct nvbios_image *image) |
| { |
| struct nvkm_subdev *subdev = &bios->subdev; |
| struct nvbios_pcirT pcir; |
| struct nvbios_npdeT npde; |
| u8 ver; |
| u16 hdr; |
| u32 data; |
| |
| switch ((data = nvbios_rd16(bios, image->base + 0x00))) { |
| case 0xaa55: |
| case 0xbb77: |
| case 0x4e56: /* NV */ |
| break; |
| default: |
| nvkm_debug(subdev, "%08x: ROM signature (%04x) unknown\n", |
| image->base, data); |
| return false; |
| } |
| |
| if (!(data = nvbios_pcirTp(bios, image->base, &ver, &hdr, &pcir))) |
| return false; |
| image->size = pcir.image_size; |
| image->type = pcir.image_type; |
| image->last = pcir.last; |
| |
| if (image->type != 0x70) { |
| if (!(data = nvbios_npdeTp(bios, image->base, &npde))) |
| return true; |
| image->size = npde.image_size; |
| image->last = npde.last; |
| } else { |
| image->last = true; |
| } |
| |
| return true; |
| } |
| |
| bool |
| nvbios_image(struct nvkm_bios *bios, int idx, struct nvbios_image *image) |
| { |
| u32 imaged_addr = bios->imaged_addr; |
| memset(image, 0x00, sizeof(*image)); |
| bios->imaged_addr = 0; |
| do { |
| image->base += image->size; |
| if (image->last || !nvbios_imagen(bios, image)) { |
| bios->imaged_addr = imaged_addr; |
| return false; |
| } |
| } while(idx--); |
| bios->imaged_addr = imaged_addr; |
| return true; |
| } |