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 *
ls_ucode_img_build(const struct firmware * bl,const struct firmware * code,const struct firmware * data,struct ls_ucode_img_desc * desc)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
ls_ucode_img_load_gr(const struct nvkm_subdev * subdev,int maxver,struct ls_ucode_img * img,const char * falcon_name)93 ls_ucode_img_load_gr(const struct nvkm_subdev *subdev, int maxver,
94 struct ls_ucode_img *img, 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, 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, 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, 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, f, &sig);
117 if (ret)
118 goto free_data;
119
120 img->sig = kmemdup(sig->data, sig->size, GFP_KERNEL);
121 if (!img->sig) {
122 ret = -ENOMEM;
123 goto free_sig;
124 }
125 img->sig_size = sig->size;
126
127 img->ucode_data = ls_ucode_img_build(bl, code, data,
128 &img->ucode_desc);
129 if (IS_ERR(img->ucode_data)) {
130 kfree(img->sig);
131 ret = PTR_ERR(img->ucode_data);
132 goto free_sig;
133 }
134 img->ucode_size = img->ucode_desc.image_size;
135
136 free_sig:
137 nvkm_firmware_put(sig);
138 free_data:
139 nvkm_firmware_put(data);
140 free_inst:
141 nvkm_firmware_put(code);
142 free_bl:
143 nvkm_firmware_put(bl);
144 error:
145 return ret;
146 }
147
148 int
acr_ls_ucode_load_fecs(const struct nvkm_secboot * sb,int maxver,struct ls_ucode_img * img)149 acr_ls_ucode_load_fecs(const struct nvkm_secboot *sb, int maxver,
150 struct ls_ucode_img *img)
151 {
152 return ls_ucode_img_load_gr(&sb->subdev, maxver, img, "fecs");
153 }
154
155 int
acr_ls_ucode_load_gpccs(const struct nvkm_secboot * sb,int maxver,struct ls_ucode_img * img)156 acr_ls_ucode_load_gpccs(const struct nvkm_secboot *sb, int maxver,
157 struct ls_ucode_img *img)
158 {
159 return ls_ucode_img_load_gr(&sb->subdev, maxver, img, "gpccs");
160 }
161