diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c new file mode 100644 index 0000000..6b33182 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c @@ -0,0 +1,97 @@ +/* + * 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); +} + +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; +} |