98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
/*
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* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
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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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "hs_ucode.h"
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#include "ls_ucode.h"
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#include "acr.h"
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#include <engine/falcon.h>
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/**
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* hs_ucode_patch_signature() - patch HS blob with correct signature for
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* specified falcon.
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*/
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static void
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hs_ucode_patch_signature(const struct nvkm_falcon *falcon, void *acr_image,
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bool new_format)
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{
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struct fw_bin_header *hsbin_hdr = acr_image;
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struct hsf_fw_header *fw_hdr = acr_image + hsbin_hdr->header_offset;
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void *hs_data = acr_image + hsbin_hdr->data_offset;
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void *sig;
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u32 sig_size;
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u32 patch_loc, patch_sig;
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/*
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* I had the brilliant idea to "improve" the binary format by
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* removing this useless indirection. However to make NVIDIA files
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* directly compatible, let's support both format.
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*/
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if (new_format) {
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patch_loc = fw_hdr->patch_loc;
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patch_sig = fw_hdr->patch_sig;
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} else {
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patch_loc = *(u32 *)(acr_image + fw_hdr->patch_loc);
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patch_sig = *(u32 *)(acr_image + fw_hdr->patch_sig);
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}
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/* Falcon in debug or production mode? */
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if (falcon->debug) {
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sig = acr_image + fw_hdr->sig_dbg_offset;
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sig_size = fw_hdr->sig_dbg_size;
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} else {
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sig = acr_image + fw_hdr->sig_prod_offset;
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sig_size = fw_hdr->sig_prod_size;
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}
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/* Patch signature */
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memcpy(hs_data + patch_loc, sig + patch_sig, sig_size);
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}
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void *
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hs_ucode_load_blob(struct nvkm_subdev *subdev, const struct nvkm_falcon *falcon,
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const char *fw)
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{
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void *acr_image;
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bool new_format;
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acr_image = nvkm_acr_load_firmware(subdev, fw, 0);
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if (IS_ERR(acr_image))
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return acr_image;
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/* detect the format to define how signature should be patched */
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switch (((u32 *)acr_image)[0]) {
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case 0x3b1d14f0:
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new_format = true;
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break;
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case 0x000010de:
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new_format = false;
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break;
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default:
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nvkm_error(subdev, "unknown header for HS blob %s\n", fw);
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return ERR_PTR(-EINVAL);
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}
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hs_ucode_patch_signature(falcon, acr_image, new_format);
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return acr_image;
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}
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