diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c | 936 |
1 files changed, 936 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c new file mode 100644 index 000000000000..1aa37ea18580 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c @@ -0,0 +1,936 @@ +/* + * Copyright (c) 2016, 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 "acr_r352.h" + +#include <core/gpuobj.h> +#include <core/firmware.h> +#include <engine/falcon.h> + +/** + * struct hsf_fw_header - HS firmware descriptor + * @sig_dbg_offset: offset of the debug signature + * @sig_dbg_size: size of the debug signature + * @sig_prod_offset: offset of the production signature + * @sig_prod_size: size of the production signature + * @patch_loc: offset of the offset (sic) of where the signature is + * @patch_sig: offset of the offset (sic) to add to sig_*_offset + * @hdr_offset: offset of the load header (see struct hs_load_header) + * @hdr_size: size of above header + * + * This structure is embedded in the HS firmware image at + * hs_bin_hdr.header_offset. + */ +struct hsf_fw_header { + u32 sig_dbg_offset; + u32 sig_dbg_size; + u32 sig_prod_offset; + u32 sig_prod_size; + u32 patch_loc; + u32 patch_sig; + u32 hdr_offset; + u32 hdr_size; +}; + +/** + * struct acr_r352_flcn_bl_desc - DMEM bootloader descriptor + * @signature: 16B signature for secure code. 0s if no secure code + * @ctx_dma: DMA context to be used by BL while loading code/data + * @code_dma_base: 256B-aligned Physical FB Address where code is located + * (falcon's $xcbase register) + * @non_sec_code_off: offset from code_dma_base where the non-secure code is + * located. The offset must be multiple of 256 to help perf + * @non_sec_code_size: the size of the nonSecure code part. + * @sec_code_off: offset from code_dma_base where the secure code is + * located. The offset must be multiple of 256 to help perf + * @sec_code_size: offset from code_dma_base where the secure code is + * located. The offset must be multiple of 256 to help perf + * @code_entry_point: code entry point which will be invoked by BL after + * code is loaded. + * @data_dma_base: 256B aligned Physical FB Address where data is located. + * (falcon's $xdbase register) + * @data_size: size of data block. Should be multiple of 256B + * + * Structure used by the bootloader to load the rest of the code. This has + * to be filled by host and copied into DMEM at offset provided in the + * hsflcn_bl_desc.bl_desc_dmem_load_off. + */ +struct acr_r352_flcn_bl_desc { + u32 reserved[4]; + u32 signature[4]; + u32 ctx_dma; + u32 code_dma_base; + u32 non_sec_code_off; + u32 non_sec_code_size; + u32 sec_code_off; + u32 sec_code_size; + u32 code_entry_point; + u32 data_dma_base; + u32 data_size; + u32 code_dma_base1; + u32 data_dma_base1; +}; + +/** + * acr_r352_generate_flcn_bl_desc - generate generic BL descriptor for LS image + */ +static void +acr_r352_generate_flcn_bl_desc(const struct nvkm_acr *acr, + const struct ls_ucode_img *_img, u64 wpr_addr, + void *_desc) +{ + struct ls_ucode_img_r352 *img = ls_ucode_img_r352(_img); + struct acr_r352_flcn_bl_desc *desc = _desc; + const struct ls_ucode_img_desc *pdesc = &_img->ucode_desc; + u64 base, addr_code, addr_data; + + base = wpr_addr + img->lsb_header.ucode_off + pdesc->app_start_offset; + addr_code = (base + pdesc->app_resident_code_offset) >> 8; + addr_data = (base + pdesc->app_resident_data_offset) >> 8; + + desc->ctx_dma = FALCON_DMAIDX_UCODE; + desc->code_dma_base = lower_32_bits(addr_code); + desc->code_dma_base1 = upper_32_bits(addr_code); + desc->non_sec_code_off = pdesc->app_resident_code_offset; + desc->non_sec_code_size = pdesc->app_resident_code_size; + desc->code_entry_point = pdesc->app_imem_entry; + desc->data_dma_base = lower_32_bits(addr_data); + desc->data_dma_base1 = upper_32_bits(addr_data); + desc->data_size = pdesc->app_resident_data_size; +} + + +/** + * struct hsflcn_acr_desc - data section of the HS firmware + * + * This header is to be copied at the beginning of DMEM by the HS bootloader. + * + * @signature: signature of ACR ucode + * @wpr_region_id: region ID holding the WPR header and its details + * @wpr_offset: offset from the WPR region holding the wpr header + * @regions: region descriptors + * @nonwpr_ucode_blob_size: size of LS blob + * @nonwpr_ucode_blob_start: FB location of LS blob is + */ +struct hsflcn_acr_desc { + union { + u8 reserved_dmem[0x200]; + u32 signatures[4]; + } ucode_reserved_space; + u32 wpr_region_id; + u32 wpr_offset; + u32 mmu_mem_range; +#define FLCN_ACR_MAX_REGIONS 2 + struct { + u32 no_regions; + struct { + u32 start_addr; + u32 end_addr; + u32 region_id; + u32 read_mask; + u32 write_mask; + u32 client_mask; + } region_props[FLCN_ACR_MAX_REGIONS]; + } regions; + u32 ucode_blob_size; + u64 ucode_blob_base __aligned(8); + struct { + u32 vpr_enabled; + u32 vpr_start; + u32 vpr_end; + u32 hdcp_policies; + } vpr_desc; +}; + + +/* + * Low-secure blob creation + */ + +/** + * ls_ucode_img_load() - create a lsf_ucode_img and load it + */ +struct ls_ucode_img * +acr_r352_ls_ucode_img_load(const struct acr_r352 *acr, + enum nvkm_secboot_falcon falcon_id) +{ + const struct nvkm_subdev *subdev = acr->base.subdev; + struct ls_ucode_img_r352 *img; + int ret; + + img = kzalloc(sizeof(*img), GFP_KERNEL); + if (!img) + return ERR_PTR(-ENOMEM); + + img->base.falcon_id = falcon_id; + + ret = acr->func->ls_func[falcon_id]->load(subdev, &img->base); + + if (ret) { + kfree(img->base.ucode_data); + kfree(img->base.sig); + kfree(img); + return ERR_PTR(ret); + } + + /* Check that the signature size matches our expectations... */ + if (img->base.sig_size != sizeof(img->lsb_header.signature)) { + nvkm_error(subdev, "invalid signature size for %s falcon!\n", + nvkm_secboot_falcon_name[falcon_id]); + return ERR_PTR(-EINVAL); + } + + /* Copy signature to the right place */ + memcpy(&img->lsb_header.signature, img->base.sig, img->base.sig_size); + + /* not needed? the signature should already have the right value */ + img->lsb_header.signature.falcon_id = falcon_id; + + return &img->base; +} + +#define LSF_LSB_HEADER_ALIGN 256 +#define LSF_BL_DATA_ALIGN 256 +#define LSF_BL_DATA_SIZE_ALIGN 256 +#define LSF_BL_CODE_SIZE_ALIGN 256 +#define LSF_UCODE_DATA_ALIGN 4096 + +/** + * acr_r352_ls_img_fill_headers - fill the WPR and LSB headers of an image + * @acr: ACR to use + * @img: image to generate for + * @offset: offset in the WPR region where this image starts + * + * Allocate space in the WPR area from offset and write the WPR and LSB headers + * accordingly. + * + * Return: offset at the end of this image. + */ +static u32 +acr_r352_ls_img_fill_headers(struct acr_r352 *acr, + struct ls_ucode_img_r352 *img, u32 offset) +{ + struct ls_ucode_img *_img = &img->base; + struct acr_r352_lsf_wpr_header *whdr = &img->wpr_header; + struct acr_r352_lsf_lsb_header *lhdr = &img->lsb_header; + struct ls_ucode_img_desc *desc = &_img->ucode_desc; + const struct acr_r352_ls_func *func = + acr->func->ls_func[_img->falcon_id]; + + /* Fill WPR header */ + whdr->falcon_id = _img->falcon_id; + whdr->bootstrap_owner = acr->base.boot_falcon; + whdr->status = LSF_IMAGE_STATUS_COPY; + + /* Skip bootstrapping falcons started by someone else than ACR */ + if (acr->lazy_bootstrap & BIT(_img->falcon_id)) + whdr->lazy_bootstrap = 1; + + /* Align, save off, and include an LSB header size */ + offset = ALIGN(offset, LSF_LSB_HEADER_ALIGN); + whdr->lsb_offset = offset; + offset += sizeof(*lhdr); + + /* + * Align, save off, and include the original (static) ucode + * image size + */ + offset = ALIGN(offset, LSF_UCODE_DATA_ALIGN); + lhdr->ucode_off = offset; + offset += _img->ucode_size; + + /* + * For falcons that use a boot loader (BL), we append a loader + * desc structure on the end of the ucode image and consider + * this the boot loader data. The host will then copy the loader + * desc args to this space within the WPR region (before locking + * down) and the HS bin will then copy them to DMEM 0 for the + * loader. + */ + lhdr->bl_code_size = ALIGN(desc->bootloader_size, + LSF_BL_CODE_SIZE_ALIGN); + lhdr->ucode_size = ALIGN(desc->app_resident_data_offset, + LSF_BL_CODE_SIZE_ALIGN) + lhdr->bl_code_size; + lhdr->data_size = ALIGN(desc->app_size, LSF_BL_CODE_SIZE_ALIGN) + + lhdr->bl_code_size - lhdr->ucode_size; + /* + * Though the BL is located at 0th offset of the image, the VA + * is different to make sure that it doesn't collide the actual + * OS VA range + */ + lhdr->bl_imem_off = desc->bootloader_imem_offset; + lhdr->app_code_off = desc->app_start_offset + + desc->app_resident_code_offset; + lhdr->app_code_size = desc->app_resident_code_size; + lhdr->app_data_off = desc->app_start_offset + + desc->app_resident_data_offset; + lhdr->app_data_size = desc->app_resident_data_size; + + lhdr->flags = func->lhdr_flags; + if (_img->falcon_id == acr->base.boot_falcon) + lhdr->flags |= LSF_FLAG_DMACTL_REQ_CTX; + + /* Align and save off BL descriptor size */ + lhdr->bl_data_size = ALIGN(func->bl_desc_size, LSF_BL_DATA_SIZE_ALIGN); + + /* + * Align, save off, and include the additional BL data + */ + offset = ALIGN(offset, LSF_BL_DATA_ALIGN); + lhdr->bl_data_off = offset; + offset += lhdr->bl_data_size; + + return offset; +} + +/** + * acr_r352_ls_fill_headers - fill WPR and LSB headers of all managed images + */ +int +acr_r352_ls_fill_headers(struct acr_r352 *acr, struct list_head *imgs) +{ + struct ls_ucode_img_r352 *img; + struct list_head *l; + u32 count = 0; + u32 offset; + + /* Count the number of images to manage */ + list_for_each(l, imgs) + count++; + + /* + * Start with an array of WPR headers at the base of the WPR. + * The expectation here is that the secure falcon will do a single DMA + * read of this array and cache it internally so it's ok to pack these. + * Also, we add 1 to the falcon count to indicate the end of the array. + */ + offset = sizeof(img->wpr_header) * (count + 1); + + /* + * Walk the managed falcons, accounting for the LSB structs + * as well as the ucode images. + */ + list_for_each_entry(img, imgs, base.node) { + offset = acr_r352_ls_img_fill_headers(acr, img, offset); + } + + return offset; +} + +/** + * acr_r352_ls_write_wpr - write the WPR blob contents + */ +int +acr_r352_ls_write_wpr(struct acr_r352 *acr, struct list_head *imgs, + struct nvkm_gpuobj *wpr_blob, u32 wpr_addr) +{ + struct ls_ucode_img *_img; + u32 pos = 0; + + nvkm_kmap(wpr_blob); + + list_for_each_entry(_img, imgs, node) { + struct ls_ucode_img_r352 *img = ls_ucode_img_r352(_img); + const struct acr_r352_ls_func *ls_func = + acr->func->ls_func[_img->falcon_id]; + u8 gdesc[ls_func->bl_desc_size]; + + nvkm_gpuobj_memcpy_to(wpr_blob, pos, &img->wpr_header, + sizeof(img->wpr_header)); + + nvkm_gpuobj_memcpy_to(wpr_blob, img->wpr_header.lsb_offset, + &img->lsb_header, sizeof(img->lsb_header)); + + /* Generate and write BL descriptor */ + memset(gdesc, 0, ls_func->bl_desc_size); + ls_func->generate_bl_desc(&acr->base, _img, wpr_addr, gdesc); + + nvkm_gpuobj_memcpy_to(wpr_blob, img->lsb_header.bl_data_off, + gdesc, ls_func->bl_desc_size); + + /* Copy ucode */ + nvkm_gpuobj_memcpy_to(wpr_blob, img->lsb_header.ucode_off, + _img->ucode_data, _img->ucode_size); + + pos += sizeof(img->wpr_header); + } + + nvkm_wo32(wpr_blob, pos, NVKM_SECBOOT_FALCON_INVALID); + + nvkm_done(wpr_blob); + + return 0; +} + +/* Both size and address of WPR need to be 128K-aligned */ +#define WPR_ALIGNMENT 0x20000 +/** + * acr_r352_prepare_ls_blob() - prepare the LS blob + * + * For each securely managed falcon, load the FW, signatures and bootloaders and + * prepare a ucode blob. Then, compute the offsets in the WPR region for each + * blob, and finally write the headers and ucode blobs into a GPU object that + * will be copied into the WPR region by the HS firmware. + */ +static int +acr_r352_prepare_ls_blob(struct acr_r352 *acr, u64 wpr_addr, u32 wpr_size) +{ + const struct nvkm_subdev *subdev = acr->base.subdev; + struct list_head imgs; + struct ls_ucode_img *img, *t; + unsigned long managed_falcons = acr->base.managed_falcons; + int managed_count = 0; + u32 image_wpr_size; + int falcon_id; + int ret; + + INIT_LIST_HEAD(&imgs); + + /* Load all LS blobs */ + for_each_set_bit(falcon_id, &managed_falcons, NVKM_SECBOOT_FALCON_END) { + struct ls_ucode_img *img; + + img = acr->func->ls_ucode_img_load(acr, falcon_id); + if (IS_ERR(img)) { + ret = PTR_ERR(img); + goto cleanup; + } + + list_add_tail(&img->node, &imgs); + managed_count++; + } + + /* + * Fill the WPR and LSF headers with the right offsets and compute + * required WPR size + */ + image_wpr_size = acr->func->ls_fill_headers(acr, &imgs); + image_wpr_size = ALIGN(image_wpr_size, WPR_ALIGNMENT); + + /* Allocate GPU object that will contain the WPR region */ + ret = nvkm_gpuobj_new(subdev->device, image_wpr_size, WPR_ALIGNMENT, + false, NULL, &acr->ls_blob); + if (ret) + goto cleanup; + + nvkm_debug(subdev, "%d managed LS falcons, WPR size is %d bytes\n", + managed_count, image_wpr_size); + + /* If WPR address and size are not fixed, set them to fit the LS blob */ + if (wpr_size == 0) { + wpr_addr = acr->ls_blob->addr; + wpr_size = image_wpr_size; + /* + * But if the WPR region is set by the bootloader, it is illegal for + * the HS blob to be larger than this region. + */ + } else if (image_wpr_size > wpr_size) { + nvkm_error(subdev, "WPR region too small for FW blob!\n"); + nvkm_error(subdev, "required: %dB\n", image_wpr_size); + nvkm_error(subdev, "available: %dB\n", wpr_size); + ret = -ENOSPC; + goto cleanup; + } + + /* Write LS blob */ + ret = acr->func->ls_write_wpr(acr, &imgs, acr->ls_blob, wpr_addr); + if (ret) + nvkm_gpuobj_del(&acr->ls_blob); + +cleanup: + list_for_each_entry_safe(img, t, &imgs, node) { + kfree(img->ucode_data); + kfree(img->sig); + kfree(img); + } + + return ret; +} + + + + +/** + * acr_r352_hsf_patch_signature() - patch HS blob with correct signature + */ +static void +acr_r352_hsf_patch_signature(struct nvkm_secboot *sb, void *acr_image) +{ + 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; + + /* Falcon in debug or production mode? */ + if (sb->boot_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 + fw_hdr->patch_loc, sig + fw_hdr->patch_sig, sig_size); +} + +static void +acr_r352_fixup_hs_desc(struct acr_r352 *acr, struct nvkm_secboot *sb, + struct hsflcn_acr_desc *desc) +{ + struct nvkm_gpuobj *ls_blob = acr->ls_blob; + + /* WPR region information if WPR is not fixed */ + if (sb->wpr_size == 0) { + u32 wpr_start = ls_blob->addr; + u32 wpr_end = wpr_start + ls_blob->size; + + desc->wpr_region_id = 1; + desc->regions.no_regions = 2; + desc->regions.region_props[0].start_addr = wpr_start >> 8; + desc->regions.region_props[0].end_addr = wpr_end >> 8; + desc->regions.region_props[0].region_id = 1; + desc->regions.region_props[0].read_mask = 0xf; + desc->regions.region_props[0].write_mask = 0xc; + desc->regions.region_props[0].client_mask = 0x2; + } else { + desc->ucode_blob_base = ls_blob->addr; + desc->ucode_blob_size = ls_blob->size; + } +} + +static void +acr_r352_generate_hs_bl_desc(const struct hsf_load_header *hdr, void *_bl_desc, + u64 offset) +{ + struct acr_r352_flcn_bl_desc *bl_desc = _bl_desc; + u64 addr_code, addr_data; + + addr_code = offset >> 8; + addr_data = (offset + hdr->data_dma_base) >> 8; + + bl_desc->ctx_dma = FALCON_DMAIDX_VIRT; + bl_desc->code_dma_base = lower_32_bits(addr_code); + bl_desc->non_sec_code_off = hdr->non_sec_code_off; + bl_desc->non_sec_code_size = hdr->non_sec_code_size; + bl_desc->sec_code_off = hdr->app[0].sec_code_off; + bl_desc->sec_code_size = hdr->app[0].sec_code_size; + bl_desc->code_entry_point = 0; + bl_desc->data_dma_base = lower_32_bits(addr_data); + bl_desc->data_size = hdr->data_size; +} + +/** + * acr_r352_prepare_hs_blob - load and prepare a HS blob and BL descriptor + * + * @sb secure boot instance to prepare for + * @fw name of the HS firmware to load + * @blob pointer to gpuobj that will be allocated to receive the HS FW payload + * @bl_desc pointer to the BL descriptor to write for this firmware + * @patch whether we should patch the HS descriptor (only for HS loaders) + */ +static int +acr_r352_prepare_hs_blob(struct acr_r352 *acr, struct nvkm_secboot *sb, + const char *fw, struct nvkm_gpuobj **blob, + struct hsf_load_header *load_header, bool patch) +{ + struct nvkm_subdev *subdev = &sb->subdev; + void *acr_image; + struct fw_bin_header *hsbin_hdr; + struct hsf_fw_header *fw_hdr; + struct hsf_load_header *load_hdr; + void *acr_data; + int ret; + + acr_image = nvkm_acr_load_firmware(subdev, fw, 0); + if (IS_ERR(acr_image)) + return PTR_ERR(acr_image); + + hsbin_hdr = acr_image; + fw_hdr = acr_image + hsbin_hdr->header_offset; + load_hdr = acr_image + fw_hdr->hdr_offset; + acr_data = acr_image + hsbin_hdr->data_offset; + + /* Patch signature */ + acr_r352_hsf_patch_signature(sb, acr_image); + + /* Patch descriptor with WPR information? */ + if (patch) { + struct hsflcn_acr_desc *desc; + + desc = acr_data + load_hdr->data_dma_base; + acr_r352_fixup_hs_desc(acr, sb, desc); + } + + if (load_hdr->num_apps > ACR_R352_MAX_APPS) { + nvkm_error(subdev, "more apps (%d) than supported (%d)!", + load_hdr->num_apps, ACR_R352_MAX_APPS); + ret = -EINVAL; + goto cleanup; + } + memcpy(load_header, load_hdr, sizeof(*load_header) + + (sizeof(load_hdr->app[0]) * load_hdr->num_apps)); + + /* Create ACR blob and copy HS data to it */ + ret = nvkm_gpuobj_new(subdev->device, ALIGN(hsbin_hdr->data_size, 256), + 0x1000, false, NULL, blob); + if (ret) + goto cleanup; + + nvkm_kmap(*blob); + nvkm_gpuobj_memcpy_to(*blob, 0, acr_data, hsbin_hdr->data_size); + nvkm_done(*blob); + +cleanup: + kfree(acr_image); + + return ret; +} + +static int +acr_r352_prepare_hsbl_blob(struct acr_r352 *acr) +{ + const struct nvkm_subdev *subdev = acr->base.subdev; + struct fw_bin_header *hdr; + struct fw_bl_desc *hsbl_desc; + + acr->hsbl_blob = nvkm_acr_load_firmware(subdev, "acr/bl", 0); + if (IS_ERR(acr->hsbl_blob)) { + int ret = PTR_ERR(acr->hsbl_blob); + + acr->hsbl_blob = NULL; + return ret; + } + + hdr = acr->hsbl_blob; + hsbl_desc = acr->hsbl_blob + hdr->header_offset; + + /* virtual start address for boot vector */ + acr->base.start_address = hsbl_desc->start_tag << 8; + + return 0; +} + +/** + * acr_r352_load_blobs - load blobs common to all ACR V1 versions. + * + * This includes the LS blob, HS ucode loading blob, and HS bootloader. + * + * The HS ucode unload blob is only used on dGPU if the WPR region is variable. + */ +int +acr_r352_load_blobs(struct acr_r352 *acr, struct nvkm_secboot *sb) +{ + int ret; + + /* Firmware already loaded? */ + if (acr->firmware_ok) + return 0; + + /* Load and prepare the managed falcon's firmwares */ + ret = acr_r352_prepare_ls_blob(acr, sb->wpr_addr, sb->wpr_size); + if (ret) + return ret; + + /* Load the HS firmware that will load the LS firmwares */ + if (!acr->load_blob) { + ret = acr_r352_prepare_hs_blob(acr, sb, "acr/ucode_load", + &acr->load_blob, + &acr->load_bl_header, true); + if (ret) + return ret; + } + + /* If the ACR region is dynamically programmed, we need an unload FW */ + if (sb->wpr_size == 0) { + ret = acr_r352_prepare_hs_blob(acr, sb, "acr/ucode_unload", + &acr->unload_blob, + &acr->unload_bl_header, false); + if (ret) + return ret; + } + + /* Load the HS firmware bootloader */ + if (!acr->hsbl_blob) { + ret = acr_r352_prepare_hsbl_blob(acr); + if (ret) + return ret; + } + + acr->firmware_ok = true; + nvkm_debug(&sb->subdev, "LS blob successfully created\n"); + + return 0; +} + +/** + * acr_r352_load() - prepare HS falcon to run the specified blob, mapped + * at GPU address offset. + */ +static int +acr_r352_load(struct nvkm_acr *_acr, struct nvkm_secboot *sb, + struct nvkm_gpuobj *blob, u64 offset) +{ + struct acr_r352 *acr = acr_r352(_acr); + struct nvkm_falcon *falcon = sb->boot_falcon; + struct fw_bin_header *hdr = acr->hsbl_blob; + struct fw_bl_desc *hsbl_desc = acr->hsbl_blob + hdr->header_offset; + void *blob_data = acr->hsbl_blob + hdr->data_offset; + void *hsbl_code = blob_data + hsbl_desc->code_off; + void *hsbl_data = blob_data + hsbl_desc->data_off; + u32 code_size = ALIGN(hsbl_desc->code_size, 256); + const struct hsf_load_header *load_hdr; + const u32 bl_desc_size = acr->func->hs_bl_desc_size; + u8 bl_desc[bl_desc_size]; + + /* Find the bootloader descriptor for our blob and copy it */ + if (blob == acr->load_blob) { + load_hdr = &acr->load_bl_header; + } else if (blob == acr->unload_blob) { + load_hdr = &acr->unload_bl_header; + } else { + nvkm_error(_acr->subdev, "invalid secure boot blob!\n"); + return -EINVAL; + } + + /* + * Copy HS bootloader data + */ + nvkm_falcon_load_dmem(falcon, hsbl_data, 0x0, hsbl_desc->data_size, 0); + + /* Copy HS bootloader code to end of IMEM */ + nvkm_falcon_load_imem(falcon, hsbl_code, falcon->code.limit - code_size, + code_size, hsbl_desc->start_tag, 0, false); + + /* Generate the BL header */ + memset(bl_desc, 0, bl_desc_size); + acr->func->generate_hs_bl_desc(load_hdr, bl_desc, offset); + + /* + * Copy HS BL header where the HS descriptor expects it to be + */ + nvkm_falcon_load_dmem(falcon, bl_desc, hsbl_desc->dmem_load_off, + bl_desc_size, 0); + + return 0; +} + +static int +acr_r352_shutdown(struct acr_r352 *acr, struct nvkm_secboot *sb) +{ + int i; + + /* Run the unload blob to unprotect the WPR region */ + if (acr->unload_blob && sb->wpr_set) { + int ret; + + nvkm_debug(&sb->subdev, "running HS unload blob\n"); + ret = sb->func->run_blob(sb, acr->unload_blob); + if (ret) + return ret; + nvkm_debug(&sb->subdev, "HS unload blob completed\n"); + } + + for (i = 0; i < NVKM_SECBOOT_FALCON_END; i++) + acr->falcon_state[i] = NON_SECURE; + + sb->wpr_set = false; + + return 0; +} + +static int +acr_r352_bootstrap(struct acr_r352 *acr, struct nvkm_secboot *sb) +{ + int ret; + + if (sb->wpr_set) + return 0; + + /* Make sure all blobs are ready */ + ret = acr_r352_load_blobs(acr, sb); + if (ret) + return ret; + + nvkm_debug(&sb->subdev, "running HS load blob\n"); + ret = sb->func->run_blob(sb, acr->load_blob); + /* clear halt interrupt */ + nvkm_falcon_clear_interrupt(sb->boot_falcon, 0x10); + if (ret) + return ret; + nvkm_debug(&sb->subdev, "HS load blob completed\n"); + + sb->wpr_set = true; + + return 0; +} + +/* + * acr_r352_reset() - execute secure boot from the prepared state + * + * Load the HS bootloader and ask the falcon to run it. This will in turn + * load the HS firmware and run it, so once the falcon stops all the managed + * falcons should have their LS firmware loaded and be ready to run. + */ +static int +acr_r352_reset(struct nvkm_acr *_acr, struct nvkm_secboot *sb, + enum nvkm_secboot_falcon falcon) +{ + struct acr_r352 *acr = acr_r352(_acr); + int ret; + + /* + * Dummy GM200 implementation: perform secure boot each time we are + * called on FECS. Since only FECS and GPCCS are managed and started + * together, this ought to be safe. + * + * Once we have proper PMU firmware and support, this will be changed + * to a proper call to the PMU method. + */ + if (falcon != NVKM_SECBOOT_FALCON_FECS) + goto end; + + ret = acr_r352_shutdown(acr, sb); + if (ret) + return ret; + + acr_r352_bootstrap(acr, sb); + if (ret) + return ret; + +end: + acr->falcon_state[falcon] = RESET; + return 0; +} + +static int +acr_r352_start(struct nvkm_acr *_acr, struct nvkm_secboot *sb, + enum nvkm_secboot_falcon falcon) +{ + struct acr_r352 *acr = acr_r352(_acr); + const struct nvkm_subdev *subdev = &sb->subdev; + int base; + + switch (falcon) { + case NVKM_SECBOOT_FALCON_FECS: + base = 0x409000; + break; + case NVKM_SECBOOT_FALCON_GPCCS: + base = 0x41a000; + break; + default: + nvkm_error(subdev, "cannot start unhandled falcon!\n"); + return -EINVAL; + } + + nvkm_wr32(subdev->device, base + 0x130, 0x00000002); + acr->falcon_state[falcon] = RUNNING; + + return 0; +} + +static int +acr_r352_fini(struct nvkm_acr *_acr, struct nvkm_secboot *sb, bool suspend) +{ + struct acr_r352 *acr = acr_r352(_acr); + + return acr_r352_shutdown(acr, sb); +} + +static void +acr_r352_dtor(struct nvkm_acr *_acr) +{ + struct acr_r352 *acr = acr_r352(_acr); + + nvkm_gpuobj_del(&acr->unload_blob); + + kfree(acr->hsbl_blob); + nvkm_gpuobj_del(&acr->load_blob); + nvkm_gpuobj_del(&acr->ls_blob); + + kfree(acr); +} + +const struct acr_r352_ls_func +acr_r352_ls_fecs_func = { + .load = acr_ls_ucode_load_fecs, + .generate_bl_desc = acr_r352_generate_flcn_bl_desc, + .bl_desc_size = sizeof(struct acr_r352_flcn_bl_desc), +}; + +const struct acr_r352_ls_func +acr_r352_ls_gpccs_func = { + .load = acr_ls_ucode_load_gpccs, + .generate_bl_desc = acr_r352_generate_flcn_bl_desc, + .bl_desc_size = sizeof(struct acr_r352_flcn_bl_desc), + /* GPCCS will be loaded using PRI */ + .lhdr_flags = LSF_FLAG_FORCE_PRIV_LOAD, +}; + +const struct acr_r352_func +acr_r352_func = { + .generate_hs_bl_desc = acr_r352_generate_hs_bl_desc, + .hs_bl_desc_size = sizeof(struct acr_r352_flcn_bl_desc), + .ls_ucode_img_load = acr_r352_ls_ucode_img_load, + .ls_fill_headers = acr_r352_ls_fill_headers, + .ls_write_wpr = acr_r352_ls_write_wpr, + .ls_func = { + [NVKM_SECBOOT_FALCON_FECS] = &acr_r352_ls_fecs_func, + [NVKM_SECBOOT_FALCON_GPCCS] = &acr_r352_ls_gpccs_func, + }, +}; + +static const struct nvkm_acr_func +acr_r352_base_func = { + .dtor = acr_r352_dtor, + .fini = acr_r352_fini, + .load = acr_r352_load, + .reset = acr_r352_reset, + .start = acr_r352_start, +}; + +struct nvkm_acr * +acr_r352_new_(const struct acr_r352_func *func, + enum nvkm_secboot_falcon boot_falcon, + unsigned long managed_falcons) +{ + struct acr_r352 *acr; + + acr = kzalloc(sizeof(*acr), GFP_KERNEL); + if (!acr) + return ERR_PTR(-ENOMEM); + + acr->base.boot_falcon = boot_falcon; + acr->base.managed_falcons = managed_falcons; + acr->base.func = &acr_r352_base_func; + acr->func = func; + + return &acr->base; +} + +struct nvkm_acr * +acr_r352_new(unsigned long managed_falcons) +{ + return acr_r352_new_(&acr_r352_func, NVKM_SECBOOT_FALCON_PMU, + managed_falcons); +} |