/*
* 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 <[email protected]>
*/
#include <subdev/bios.h>
#include <subdev/bios/npde.h>
#include <subdev/bios/pcir.h>
u32
nvbios_npdeTe(struct nvkm_bios *bios, u32 base)
{
struct nvbios_pcirT pcir;
u8 ver; u16 hdr;
u32 data = nvbios_pcirTp(bios, base, &ver, &hdr, &pcir);
if (data = (data + hdr + 0x0f) & ~0x0f, data) {
switch (nvbios_rd32(bios, data + 0x00)) {
case 0x4544504e: /* NPDE */
break;
default:
nvkm_debug(&bios->subdev,
"%08x: NPDE signature (%08x) unknown\n",
data, nvbios_rd32(bios, data + 0x00));
data = 0;
break;
}
}
return data;
}
u32
nvbios_npdeTp(struct nvkm_bios *bios, u32 base, struct nvbios_npdeT *info)
{
u32 data = nvbios_npdeTe(bios, base);
memset(info, 0x00, sizeof(*info));
if (data) {
info->image_size = nvbios_rd16(bios, data + 0x08) * 512;
info->last = nvbios_rd08(bios, data + 0x0a) & 0x80;
}
return data;
}
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