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Michal Simekd9b58b32016-04-27 14:03:29 +02001/*
2 * Copyright (C) 2016 Michal Simek <michals@xilinx.com>
3 * Copyright (C) 2015 Nathan Rossi <nathan@nathanrossi.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 *
7 * The following Boot Header format/structures and values are defined in the
8 * following documents:
9 * * ug1085 ZynqMP TRM (Chapter 9, Table 9-3)
10 *
11 * Expected Header Size = 0x9C0
12 * Forced as 'little' endian, 32-bit words
13 *
14 * 0x 0 - Interrupt table (8 words)
15 * ... (Default value = 0xeafffffe)
16 * 0x 1f
17 * 0x 20 - Width detection
18 * * DEFAULT_WIDTHDETECTION 0xaa995566
19 * 0x 24 - Image identifier
20 * * DEFAULT_IMAGEIDENTIFIER 0x584c4e58
21 * 0x 28 - Encryption
22 * * 0x00000000 - None
23 * * 0xa5c3c5a3 - eFuse
24 * * 0xa5c3c5a7 - obfuscated key in eFUSE
25 * * 0x3a5c3c5a - bbRam
26 * * 0xa35c7ca5 - obfuscated key in boot header
27 * 0x 2C - Image load
28 * 0x 30 - Image offset
29 * 0x 34 - PFW image length
30 * 0x 38 - Total PFW image length
31 * 0x 3C - Image length
32 * 0x 40 - Total image length
33 * 0x 44 - Image attributes
34 * 0x 48 - Header checksum
35 * 0x 4c - Obfuscated key
36 * ...
37 * 0x 68
38 * 0x 6c - Reserved
39 * 0x 70 - User defined
40 * ...
41 * 0x 9c
42 * 0x a0 - Secure header initialization vector
43 * ...
44 * 0x a8
45 * 0x ac - Obfuscated key initialization vector
46 * ...
47 * 0x b4
48 * 0x b8 - Register Initialization, 511 Address and Data word pairs
49 * * List is terminated with an address of 0xffffffff or
50 * ... * at the max number of entries
51 * 0x8b4
52 * 0x8b8 - Reserved
53 * ...
54 * 0x9bf
55 * 0x9c0 - Data/Image starts here or above
56 */
57
58#include "imagetool.h"
59#include "mkimage.h"
60#include <image.h>
61
62#define HEADER_INTERRUPT_DEFAULT (cpu_to_le32(0xeafffffe))
63#define HEADER_REGINIT_NULL (cpu_to_le32(0xffffffff))
64#define HEADER_WIDTHDETECTION (cpu_to_le32(0xaa995566))
65#define HEADER_IMAGEIDENTIFIER (cpu_to_le32(0x584c4e58))
66
67enum {
68 ENCRYPTION_EFUSE = 0xa5c3c5a3,
69 ENCRYPTION_OEFUSE = 0xa5c3c5a7,
70 ENCRYPTION_BBRAM = 0x3a5c3c5a,
71 ENCRYPTION_OBBRAM = 0xa35c7ca5,
72 ENCRYPTION_NONE = 0x0,
73};
74
75struct zynqmp_reginit {
76 uint32_t address;
77 uint32_t data;
78};
79
80#define HEADER_INTERRUPT_VECTORS 8
81#define HEADER_REGINITS 256
82
83struct zynqmp_header {
84 uint32_t interrupt_vectors[HEADER_INTERRUPT_VECTORS]; /* 0x0 */
85 uint32_t width_detection; /* 0x20 */
86 uint32_t image_identifier; /* 0x24 */
87 uint32_t encryption; /* 0x28 */
88 uint32_t image_load; /* 0x2c */
89 uint32_t image_offset; /* 0x30 */
90 uint32_t pfw_image_length; /* 0x34 */
91 uint32_t total_pfw_image_length; /* 0x38 */
92 uint32_t image_size; /* 0x3c */
93 uint32_t image_stored_size; /* 0x40 */
94 uint32_t image_attributes; /* 0x44 */
95 uint32_t checksum; /* 0x48 */
96 uint32_t __reserved1[27]; /* 0x4c */
97 struct zynqmp_reginit register_init[HEADER_REGINITS]; /* 0xb8 */
98 uint32_t __reserved4[66]; /* 0x9c0 */
99};
100
101static struct zynqmp_header zynqmpimage_header;
102
103static uint32_t zynqmpimage_checksum(struct zynqmp_header *ptr)
104{
105 uint32_t checksum = 0;
106
107 if (ptr == NULL)
108 return 0;
109
110 checksum += le32_to_cpu(ptr->width_detection);
111 checksum += le32_to_cpu(ptr->image_identifier);
112 checksum += le32_to_cpu(ptr->encryption);
113 checksum += le32_to_cpu(ptr->image_load);
114 checksum += le32_to_cpu(ptr->image_offset);
115 checksum += le32_to_cpu(ptr->pfw_image_length);
116 checksum += le32_to_cpu(ptr->total_pfw_image_length);
117 checksum += le32_to_cpu(ptr->image_size);
118 checksum += le32_to_cpu(ptr->image_stored_size);
119 checksum += le32_to_cpu(ptr->image_attributes);
120 checksum = ~checksum;
121
122 return cpu_to_le32(checksum);
123}
124
125static void zynqmpimage_default_header(struct zynqmp_header *ptr)
126{
127 int i;
128
129 if (ptr == NULL)
130 return;
131
132 ptr->width_detection = HEADER_WIDTHDETECTION;
133 ptr->image_attributes = 0x800;
134 ptr->image_identifier = HEADER_IMAGEIDENTIFIER;
135 ptr->encryption = cpu_to_le32(ENCRYPTION_NONE);
136
137 /* Setup not-supported/constant/reserved fields */
138 for (i = 0; i < HEADER_INTERRUPT_VECTORS; i++)
139 ptr->interrupt_vectors[i] = HEADER_INTERRUPT_DEFAULT;
140
141 for (i = 0; i < HEADER_REGINITS; i++) {
142 ptr->register_init[i].address = HEADER_REGINIT_NULL;
143 ptr->register_init[i].data = 0;
144 }
145
146 /*
147 * Certain reserved fields are required to be set to 0, ensure they are
148 * set as such.
149 */
150 ptr->pfw_image_length = 0x0;
151 ptr->total_pfw_image_length = 0x0;
152}
153
154/* mkimage glue functions */
155static int zynqmpimage_verify_header(unsigned char *ptr, int image_size,
156 struct image_tool_params *params)
157{
158 struct zynqmp_header *zynqhdr = (struct zynqmp_header *)ptr;
159
160 if (image_size < sizeof(struct zynqmp_header))
161 return -1;
162
163 if (zynqhdr->width_detection != HEADER_WIDTHDETECTION)
164 return -1;
165 if (zynqhdr->image_identifier != HEADER_IMAGEIDENTIFIER)
166 return -1;
167
168 if (zynqmpimage_checksum(zynqhdr) != zynqhdr->checksum)
169 return -1;
170
171 return 0;
172}
173
174static void zynqmpimage_print_header(const void *ptr)
175{
176 struct zynqmp_header *zynqhdr = (struct zynqmp_header *)ptr;
177 int i;
178
179 printf("Image Type : Xilinx Zynq Boot Image support\n");
180 printf("Image Offset : 0x%08x\n", le32_to_cpu(zynqhdr->image_offset));
181 printf("Image Size : %lu bytes (%lu bytes packed)\n",
182 (unsigned long)le32_to_cpu(zynqhdr->image_size),
183 (unsigned long)le32_to_cpu(zynqhdr->image_stored_size));
184 printf("Image Load : 0x%08x\n", le32_to_cpu(zynqhdr->image_load));
185 printf("Checksum : 0x%08x\n", le32_to_cpu(zynqhdr->checksum));
186
187 for (i = 0; i < HEADER_INTERRUPT_VECTORS; i++) {
188 if (zynqhdr->interrupt_vectors[i] == HEADER_INTERRUPT_DEFAULT)
189 continue;
190
191 printf("Modified Interrupt Vector Address [%d]: 0x%08x\n", i,
192 le32_to_cpu(zynqhdr->interrupt_vectors[i]));
193 }
194
195 for (i = 0; i < HEADER_REGINITS; i++) {
196 if (zynqhdr->register_init[i].address == HEADER_REGINIT_NULL)
197 break;
198
199 if (i == 0)
200 printf("Custom Register Initialization:\n");
201
202 printf(" @ 0x%08x -> 0x%08x\n",
203 le32_to_cpu(zynqhdr->register_init[i].address),
204 le32_to_cpu(zynqhdr->register_init[i].data));
205 }
206}
207
208static int zynqmpimage_check_params(struct image_tool_params *params)
209{
210 if (!params)
211 return 0;
212
213 if (params->addr != 0x0) {
214 fprintf(stderr, "Error: Load Address cannot be specified.\n");
215 return -1;
216 }
217
218 /*
219 * If the entry point is specified ensure it is 64 byte aligned.
220 */
221 if (params->eflag && (params->ep % 64 != 0)) {
222 fprintf(stderr,
223 "Error: Entry Point must be aligned to a 64-byte boundary.\n");
224 return -1;
225 }
226
227 return !(params->lflag || params->dflag);
228}
229
230static int zynqmpimage_check_image_types(uint8_t type)
231{
232 if (type == IH_TYPE_ZYNQMPIMAGE)
233 return EXIT_SUCCESS;
234 return EXIT_FAILURE;
235}
236
Mike Looijmans3b646082016-09-20 11:37:24 +0200237static void zynqmpimage_parse_initparams(struct zynqmp_header *zynqhdr,
238 const char *filename)
239{
Michal Simek56c7e802016-10-21 13:16:13 +0200240 FILE *fp;
Mike Looijmans3b646082016-09-20 11:37:24 +0200241 struct zynqmp_reginit reginit;
242 unsigned int reg_count = 0;
Michal Simekebe0f532016-12-06 17:17:01 +0100243 int r, err;
Michal Simek56c7e802016-10-21 13:16:13 +0200244 struct stat path_stat;
Mike Looijmans3b646082016-09-20 11:37:24 +0200245
Michal Simek56c7e802016-10-21 13:16:13 +0200246 /* Expect a table of register-value pairs, e.g. "0x12345678 0x4321" */
247 fp = fopen(filename, "r");
Mike Looijmans3b646082016-09-20 11:37:24 +0200248 if (!fp) {
249 fprintf(stderr, "Cannot open initparams file: %s\n", filename);
250 exit(1);
251 }
Michal Simekebe0f532016-12-06 17:17:01 +0100252
253 err = fstat(fileno(fp), &path_stat);
254 if (err)
255 return;
256
257 if (!S_ISREG(path_stat.st_mode))
258 return;
259
Mike Looijmans3b646082016-09-20 11:37:24 +0200260 do {
261 r = fscanf(fp, "%x %x", &reginit.address, &reginit.data);
262 if (r == 2) {
263 zynqhdr->register_init[reg_count] = reginit;
264 ++reg_count;
265 }
266 r = fscanf(fp, "%*[^\n]\n"); /* Skip to next line */
267 } while ((r != EOF) && (reg_count < HEADER_REGINITS));
268 fclose(fp);
269}
270
Michal Simekd9b58b32016-04-27 14:03:29 +0200271static void zynqmpimage_set_header(void *ptr, struct stat *sbuf, int ifd,
272 struct image_tool_params *params)
273{
274 struct zynqmp_header *zynqhdr = (struct zynqmp_header *)ptr;
275 zynqmpimage_default_header(zynqhdr);
276
277 /* place image directly after header */
278 zynqhdr->image_offset =
279 cpu_to_le32((uint32_t)sizeof(struct zynqmp_header));
280 zynqhdr->image_size = cpu_to_le32(params->file_size -
281 sizeof(struct zynqmp_header));
282 zynqhdr->image_stored_size = zynqhdr->image_size;
283 zynqhdr->image_load = 0xfffc0000;
284 if (params->eflag)
285 zynqhdr->image_load = cpu_to_le32((uint32_t)params->ep);
286
Mike Looijmans3b646082016-09-20 11:37:24 +0200287 /* User can pass in text file with init list */
288 if (strlen(params->imagename2))
289 zynqmpimage_parse_initparams(zynqhdr, params->imagename2);
290
Michal Simekd9b58b32016-04-27 14:03:29 +0200291 zynqhdr->checksum = zynqmpimage_checksum(zynqhdr);
292}
293
294U_BOOT_IMAGE_TYPE(
295 zynqmpimage,
296 "Xilinx ZynqMP Boot Image support",
297 sizeof(struct zynqmp_header),
298 (void *)&zynqmpimage_header,
299 zynqmpimage_check_params,
300 zynqmpimage_verify_header,
301 zynqmpimage_print_header,
302 zynqmpimage_set_header,
303 NULL,
304 zynqmpimage_check_image_types,
305 NULL,
306 NULL
307);