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/*
* 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;
}
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