ASoC: Intel: Skylake: Fix to parse consecutive string tkns in manifest
[sfrench/cifs-2.6.git] / drivers / gpu / drm / nouveau / nvkm / subdev / secboot / ls_ucode_gr.c
1 /*
2  * Copyright (c) 2016, 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
24 #include "ls_ucode.h"
25 #include "acr.h"
26
27 #include <core/firmware.h>
28
29 #define BL_DESC_BLK_SIZE 256
30 /**
31  * Build a ucode image and descriptor from provided bootloader, code and data.
32  *
33  * @bl:         bootloader image, including 16-bytes descriptor
34  * @code:       LS firmware code segment
35  * @data:       LS firmware data segment
36  * @desc:       ucode descriptor to be written
37  *
38  * Return: allocated ucode image with corresponding descriptor information. desc
39  *         is also updated to contain the right offsets within returned image.
40  */
41 static void *
42 ls_ucode_img_build(const struct firmware *bl, const struct firmware *code,
43                    const struct firmware *data, struct ls_ucode_img_desc *desc)
44 {
45         struct fw_bin_header *bin_hdr = (void *)bl->data;
46         struct fw_bl_desc *bl_desc = (void *)bl->data + bin_hdr->header_offset;
47         void *bl_data = (void *)bl->data + bin_hdr->data_offset;
48         u32 pos = 0;
49         void *image;
50
51         desc->bootloader_start_offset = pos;
52         desc->bootloader_size = ALIGN(bl_desc->code_size, sizeof(u32));
53         desc->bootloader_imem_offset = bl_desc->start_tag * 256;
54         desc->bootloader_entry_point = bl_desc->start_tag * 256;
55
56         pos = ALIGN(pos + desc->bootloader_size, BL_DESC_BLK_SIZE);
57         desc->app_start_offset = pos;
58         desc->app_size = ALIGN(code->size, BL_DESC_BLK_SIZE) +
59                          ALIGN(data->size, BL_DESC_BLK_SIZE);
60         desc->app_imem_offset = 0;
61         desc->app_imem_entry = 0;
62         desc->app_dmem_offset = 0;
63         desc->app_resident_code_offset = 0;
64         desc->app_resident_code_size = ALIGN(code->size, BL_DESC_BLK_SIZE);
65
66         pos = ALIGN(pos + desc->app_resident_code_size, BL_DESC_BLK_SIZE);
67         desc->app_resident_data_offset = pos - desc->app_start_offset;
68         desc->app_resident_data_size = ALIGN(data->size, BL_DESC_BLK_SIZE);
69
70         desc->image_size = ALIGN(bl_desc->code_size, BL_DESC_BLK_SIZE) +
71                            desc->app_size;
72
73         image = kzalloc(desc->image_size, GFP_KERNEL);
74         if (!image)
75                 return ERR_PTR(-ENOMEM);
76
77         memcpy(image + desc->bootloader_start_offset, bl_data,
78                bl_desc->code_size);
79         memcpy(image + desc->app_start_offset, code->data, code->size);
80         memcpy(image + desc->app_start_offset + desc->app_resident_data_offset,
81                data->data, data->size);
82
83         return image;
84 }
85
86 /**
87  * ls_ucode_img_load_gr() - load and prepare a LS GR ucode image
88  *
89  * Load the LS microcode, bootloader and signature and pack them into a single
90  * blob. Also generate the corresponding ucode descriptor.
91  */
92 static int
93 ls_ucode_img_load_gr(const struct nvkm_subdev *subdev, struct ls_ucode_img *img,
94                      const char *falcon_name)
95 {
96         const struct firmware *bl, *code, *data, *sig;
97         char f[64];
98         int ret;
99
100         snprintf(f, sizeof(f), "gr/%s_bl", falcon_name);
101         ret = nvkm_firmware_get(subdev->device, f, &bl);
102         if (ret)
103                 goto error;
104
105         snprintf(f, sizeof(f), "gr/%s_inst", falcon_name);
106         ret = nvkm_firmware_get(subdev->device, f, &code);
107         if (ret)
108                 goto free_bl;
109
110         snprintf(f, sizeof(f), "gr/%s_data", falcon_name);
111         ret = nvkm_firmware_get(subdev->device, f, &data);
112         if (ret)
113                 goto free_inst;
114
115         snprintf(f, sizeof(f), "gr/%s_sig", falcon_name);
116         ret = nvkm_firmware_get(subdev->device, f, &sig);
117         if (ret)
118                 goto free_data;
119         img->sig = kmemdup(sig->data, sig->size, GFP_KERNEL);
120         if (!img->sig) {
121                 ret = -ENOMEM;
122                 goto free_sig;
123         }
124         img->sig_size = sig->size;
125
126         img->ucode_data = ls_ucode_img_build(bl, code, data,
127                                              &img->ucode_desc);
128         if (IS_ERR(img->ucode_data)) {
129                 ret = PTR_ERR(img->ucode_data);
130                 goto free_data;
131         }
132         img->ucode_size = img->ucode_desc.image_size;
133
134 free_sig:
135         nvkm_firmware_put(sig);
136 free_data:
137         nvkm_firmware_put(data);
138 free_inst:
139         nvkm_firmware_put(code);
140 free_bl:
141         nvkm_firmware_put(bl);
142 error:
143         return ret;
144 }
145
146 int
147 acr_ls_ucode_load_fecs(const struct nvkm_secboot *sb, struct ls_ucode_img *img)
148 {
149         return ls_ucode_img_load_gr(&sb->subdev, img, "fecs");
150 }
151
152 int
153 acr_ls_ucode_load_gpccs(const struct nvkm_secboot *sb, struct ls_ucode_img *img)
154 {
155         return ls_ucode_img_load_gr(&sb->subdev, img, "gpccs");
156 }