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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/bit.h>
#include <subdev/bios/image.h>
#include <subdev/bios/pmu.h>
static u32
weirdo_pointer(struct nvkm_bios *bios, u32 data)
{
struct nvbios_image image;
int idx = 0;
if (nvbios_image(bios, idx++, &image)) {
data -= image.size;
while (nvbios_image(bios, idx++, &image)) {
if (image.type == 0xe0)
return image.base + data;
}
}
return 0;
}
u32
nvbios_pmuTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
struct bit_entry bit_p;
u32 data = 0;
if (!bit_entry(bios, 'p', &bit_p)) {
if (bit_p.version == 2 && bit_p.length >= 4)
data = nvbios_rd32(bios, bit_p.offset + 0x00);
if ((data = weirdo_pointer(bios, data))) {
*ver = nvbios_rd08(bios, data + 0x00); /* maybe? */
*hdr = nvbios_rd08(bios, data + 0x01);
*len = nvbios_rd08(bios, data + 0x02);
*cnt = nvbios_rd08(bios, data + 0x03);
}
}
return data;
}
u32
nvbios_pmuEe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr)
{
u8 cnt, len;
u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len);
if (data && idx < cnt) {
data = data + *hdr + (idx * len);
*hdr = len;
return data;
}
return 0;
}
u32
nvbios_pmuEp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr,
struct nvbios_pmuE *info)
{
u32 data = nvbios_pmuEe(bios, idx, ver, hdr);
memset(info, 0x00, sizeof(*info));
switch (!!data * *ver) {
default:
info->type = nvbios_rd08(bios, data + 0x00);
info->data = nvbios_rd32(bios, data + 0x02);
break;
}
return data;
}
bool
nvbios_pmuRm(struct nvkm_bios *bios, u8 type, struct nvbios_pmuR *info)
{
struct nvbios_pmuE pmuE;
u8 ver, hdr, idx = 0;
u32 data;
memset(info, 0x00, sizeof(*info));
while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) {
if ( pmuE.type == type &&
(data = weirdo_pointer(bios, pmuE.data))) {
info->init_addr_pmu = nvbios_rd32(bios, data + 0x08);
info->args_addr_pmu = nvbios_rd32(bios, data + 0x0c);
info->boot_addr = data + 0x30;
info->boot_addr_pmu = nvbios_rd32(bios, data + 0x10) +
nvbios_rd32(bios, data + 0x18);
info->boot_size = nvbios_rd32(bios, data + 0x1c) -
nvbios_rd32(bios, data + 0x18);
info->code_addr = info->boot_addr + info->boot_size;
info->code_addr_pmu = info->boot_addr_pmu +
info->boot_size;
info->code_size = nvbios_rd32(bios, data + 0x20);
info->data_addr = data + 0x30 +
nvbios_rd32(bios, data + 0x24);
info->data_addr_pmu = nvbios_rd32(bios, data + 0x28);
info->data_size = nvbios_rd32(bios, data + 0x2c);
return true;
}
}
return false;
}
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