drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c

   1 /*
   2  * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include "acr.h"
  24 #include "gm200.h"
  25
  26 #include "ls_ucode.h"
  27 #include "hs_ucode.h"
  28 #include <subdev/mc.h>
  29 #include <subdev/timer.h>
  30 #include <engine/falcon.h>
  31 #include <engine/nvdec.h>
  32
  33 static bool
  34 gp102_secboot_scrub_required(struct nvkm_secboot *sb)
  35 {
  36         struct nvkm_subdev *subdev = &sb->subdev;
  37         struct nvkm_device *device = subdev->device;
  38         u32 reg;
  39
  40         nvkm_wr32(device, 0x100cd0, 0x2);
  41         reg = nvkm_rd32(device, 0x100cd0);
  42
  43         return (reg & BIT(4));
  44 }
  45
  46 static int
  47 gp102_run_secure_scrub(struct nvkm_secboot *sb)
  48 {
  49         struct nvkm_subdev *subdev = &sb->subdev;
  50         struct nvkm_device *device = subdev->device;
  51         struct nvkm_engine *engine;
  52         struct nvkm_falcon *falcon;
  53         void *scrub_image;
  54         struct fw_bin_header *hsbin_hdr;
  55         struct hsf_fw_header *fw_hdr;
  56         struct hsf_load_header *lhdr;
  57         void *scrub_data;
  58         int ret;
  59
  60         nvkm_debug(subdev, "running VPR scrubber binary on NVDEC...\n");
  61
  62         engine = nvkm_engine_ref(&device->nvdec->engine);
  63         if (IS_ERR(engine))
  64                 return PTR_ERR(engine);
  65         falcon = device->nvdec->falcon;
  66
  67         nvkm_falcon_get(falcon, &sb->subdev);
  68
  69         scrub_image = hs_ucode_load_blob(subdev, falcon, "nvdec/scrubber");
  70         if (IS_ERR(scrub_image))
  71                 return PTR_ERR(scrub_image);
  72
  73         nvkm_falcon_reset(falcon);
  74         nvkm_falcon_bind_context(falcon, NULL);
  75
  76         hsbin_hdr = scrub_image;
  77         fw_hdr = scrub_image + hsbin_hdr->header_offset;
  78         lhdr = scrub_image + fw_hdr->hdr_offset;
  79         scrub_data = scrub_image + hsbin_hdr->data_offset;
  80
  81         nvkm_falcon_load_imem(falcon, scrub_data, lhdr->non_sec_code_off,
  82                               lhdr->non_sec_code_size,
  83                               lhdr->non_sec_code_off >> 8, 0, false);
  84         nvkm_falcon_load_imem(falcon, scrub_data + lhdr->apps[0],
  85                               ALIGN(lhdr->apps[0], 0x100),
  86                               lhdr->apps[1],
  87                               lhdr->apps[0] >> 8, 0, true);
  88         nvkm_falcon_load_dmem(falcon, scrub_data + lhdr->data_dma_base, 0,
  89                               lhdr->data_size, 0);
  90
  91         kfree(scrub_image);
  92
  93         nvkm_falcon_set_start_addr(falcon, 0x0);
  94         nvkm_falcon_start(falcon);
  95
  96         ret = nvkm_falcon_wait_for_halt(falcon, 500);
  97         if (ret < 0) {
  98                 nvkm_error(subdev, "failed to run VPR scrubber binary!\n");
  99                 ret = -ETIMEDOUT;
 100                 goto end;
 101         }
 102
 103         /* put nvdec in clean state - without reset it will remain in HS mode */
 104         nvkm_falcon_reset(falcon);
 105
 106         if (gp102_secboot_scrub_required(sb)) {
 107                 nvkm_error(subdev, "VPR scrubber binary failed!\n");
 108                 ret = -EINVAL;
 109                 goto end;
 110         }
 111
 112         nvkm_debug(subdev, "VPR scrub successfully completed\n");
 113
 114 end:
 115         nvkm_falcon_put(falcon, &sb->subdev);
 116         nvkm_engine_unref(&engine);
 117         return ret;
 118 }
 119
 120 static int
 121 gp102_secboot_run_blob(struct nvkm_secboot *sb, struct nvkm_gpuobj *blob,
 122                        struct nvkm_falcon *falcon)
 123 {
 124         int ret;
 125
 126         /* make sure the VPR region is unlocked */
 127         if (gp102_secboot_scrub_required(sb)) {
 128                 ret = gp102_run_secure_scrub(sb);
 129                 if (ret)
 130                         return ret;
 131         }
 132
 133         return gm200_secboot_run_blob(sb, blob, falcon);
 134 }
 135
 136 const struct nvkm_secboot_func
 137 gp102_secboot = {
 138         .dtor = gm200_secboot_dtor,
 139         .oneinit = gm200_secboot_oneinit,
 140         .fini = gm200_secboot_fini,
 141         .run_blob = gp102_secboot_run_blob,
 142 };
 143
 144 int
 145 gp102_secboot_new(struct nvkm_device *device, int index,
 146                   struct nvkm_secboot **psb)
 147 {
 148         int ret;
 149         struct gm200_secboot *gsb;
 150         struct nvkm_acr *acr;
 151
 152         acr = acr_r367_new(NVKM_SECBOOT_FALCON_SEC2,
 153                            BIT(NVKM_SECBOOT_FALCON_FECS) |
 154                            BIT(NVKM_SECBOOT_FALCON_GPCCS) |
 155                            BIT(NVKM_SECBOOT_FALCON_SEC2));
 156         if (IS_ERR(acr))
 157                 return PTR_ERR(acr);
 158
 159         gsb = kzalloc(sizeof(*gsb), GFP_KERNEL);
 160         if (!gsb) {
 161                 psb = NULL;
 162                 return -ENOMEM;
 163         }
 164         *psb = &gsb->base;
 165
 166         ret = nvkm_secboot_ctor(&gp102_secboot, acr, device, index, &gsb->base);
 167         if (ret)
 168                 return ret;
 169
 170         return 0;
 171 }
 172
 173 /*(DEBLOBBED)*/