Release 4.12 drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c
/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* 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 AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include "hs_ucode.h"
#include "ls_ucode.h"
#include "acr.h"
#include <engine/falcon.h>
/**
* hs_ucode_patch_signature() - patch HS blob with correct signature for
* specified falcon.
*/
static void
hs_ucode_patch_signature(const struct nvkm_falcon *falcon, void *acr_image,
bool new_format)
{
struct fw_bin_header *hsbin_hdr = acr_image;
struct hsf_fw_header *fw_hdr = acr_image + hsbin_hdr->header_offset;
void *hs_data = acr_image + hsbin_hdr->data_offset;
void *sig;
u32 sig_size;
u32 patch_loc, patch_sig;
/*
* I had the brilliant idea to "improve" the binary format by
* removing this useless indirection. However to make NVIDIA files
* directly compatible, let's support both format.
*/
if (new_format) {
patch_loc = fw_hdr->patch_loc;
patch_sig = fw_hdr->patch_sig;
} else {
patch_loc = *(u32 *)(acr_image + fw_hdr->patch_loc);
patch_sig = *(u32 *)(acr_image + fw_hdr->patch_sig);
}
/* Falcon in debug or production mode? */
if (falcon->debug) {
sig = acr_image + fw_hdr->sig_dbg_offset;
sig_size = fw_hdr->sig_dbg_size;
} else {
sig = acr_image + fw_hdr->sig_prod_offset;
sig_size = fw_hdr->sig_prod_size;
}
/* Patch signature */
memcpy(hs_data + patch_loc, sig + patch_sig, sig_size);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexandre Courbot | 165 | 100.00% | 1 | 100.00% |
| Total | 165 | 100.00% | 1 | 100.00% |
void *
hs_ucode_load_blob(struct nvkm_subdev *subdev, const struct nvkm_falcon *falcon,
const char *fw)
{
void *acr_image;
bool new_format;
acr_image = nvkm_acr_load_firmware(subdev, fw, 0);
if (IS_ERR(acr_image))
return acr_image;
/* detect the format to define how signature should be patched */
switch (((u32 *)acr_image)[0]) {
case 0x3b1d14f0:
new_format = true;
break;
case 0x000010de:
new_format = false;
break;
default:
nvkm_error(subdev, "unknown header for HS blob %s\n", fw);
return ERR_PTR(-EINVAL);
}
hs_ucode_patch_signature(falcon, acr_image, new_format);
return acr_image;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexandre Courbot | 111 | 100.00% | 1 | 100.00% |
| Total | 111 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexandre Courbot | 290 | 100.00% | 1 | 100.00% |
| Total | 290 | 100.00% | 1 | 100.00% |
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