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