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Shaohui Xie5d898a02012-08-10 02:49:35 +00001/*
Alison Wang94cb17d2014-12-03 15:00:41 +08002 * Copyright 2012-2014 Freescale Semiconductor, Inc.
Shaohui Xie5d898a02012-08-10 02:49:35 +00003 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02004 * SPDX-License-Identifier: GPL-2.0+
Shaohui Xie5d898a02012-08-10 02:49:35 +00005 */
Guilherme Maciel Ferreiraf86ed6a2013-12-01 12:43:10 -07006#include "imagetool.h"
Shaohui Xie5d898a02012-08-10 02:49:35 +00007#include <image.h>
8#include "pblimage.h"
Charles Manningabbc67e2014-05-14 14:45:00 +12009#include "pbl_crc32.h"
Shaohui Xie5d898a02012-08-10 02:49:35 +000010
Alison Wang94cb17d2014-12-03 15:00:41 +080011#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
12#define PBL_ACS_CONT_CMD 0x81000000
13#define PBL_ADDR_24BIT_MASK 0x00ffffff
14
Shaohui Xie5d898a02012-08-10 02:49:35 +000015/*
Chris Packham0d3efd82013-05-27 10:51:46 +120016 * Initialize to an invalid value.
Shaohui Xie5d898a02012-08-10 02:49:35 +000017 */
Chris Packham0d3efd82013-05-27 10:51:46 +120018static uint32_t next_pbl_cmd = 0x82000000;
Shaohui Xie5d898a02012-08-10 02:49:35 +000019/*
20 * need to store all bytes in memory for calculating crc32, then write the
21 * bytes to image file for PBL boot.
22 */
Chris Packham0d3efd82013-05-27 10:51:46 +120023static unsigned char mem_buf[1000000];
Shaohui Xie5d898a02012-08-10 02:49:35 +000024static unsigned char *pmem_buf = mem_buf;
25static int pbl_size;
26static char *fname = "Unknown";
27static int lineno = -1;
28static struct pbl_header pblimage_header;
Alison Wang94cb17d2014-12-03 15:00:41 +080029static int uboot_size;
30static int arch_flag;
31
32static uint32_t pbl_cmd_initaddr;
33static uint32_t pbi_crc_cmd1;
34static uint32_t pbi_crc_cmd2;
35static uint32_t pbl_end_cmd[4];
Shaohui Xie5d898a02012-08-10 02:49:35 +000036
37static union
38{
39 char c[4];
40 unsigned char l;
41} endian_test = { {'l', '?', '?', 'b'} };
42
43#define ENDIANNESS ((char)endian_test.l)
44
Chris Packham0d3efd82013-05-27 10:51:46 +120045/*
46 * The PBL can load up to 64 bytes at a time, so we split the U-Boot
47 * image into 64 byte chunks. PBL needs a command for each piece, of
48 * the form "81xxxxxx", where "xxxxxx" is the offset. Calculate the
49 * start offset by subtracting the size of the u-boot image from the
50 * top of the allowable 24-bit range.
51 */
Shaohui Xie5d898a02012-08-10 02:49:35 +000052static void generate_pbl_cmd(void)
53{
54 uint32_t val = next_pbl_cmd;
55 next_pbl_cmd += 0x40;
56 int i;
57
58 for (i = 3; i >= 0; i--) {
59 *pmem_buf++ = (val >> (i * 8)) & 0xff;
60 pbl_size++;
61 }
62}
63
64static void pbl_fget(size_t size, FILE *stream)
65{
Alison Wang94cb17d2014-12-03 15:00:41 +080066 unsigned char c = 0xff;
Shaohui Xie5d898a02012-08-10 02:49:35 +000067 int c_temp;
68
Alison Wang94cb17d2014-12-03 15:00:41 +080069 while (size) {
70 c_temp = fgetc(stream);
71 if (c_temp != EOF)
72 c = (unsigned char)c_temp;
73 else if ((c_temp == EOF) && (arch_flag == IH_ARCH_ARM))
74 c = 0xff;
Shaohui Xie5d898a02012-08-10 02:49:35 +000075 *pmem_buf++ = c;
76 pbl_size++;
77 size--;
78 }
79}
80
81/* load split u-boot with PBI command 81xxxxxx. */
82static void load_uboot(FILE *fp_uboot)
83{
Alison Wang94cb17d2014-12-03 15:00:41 +080084 next_pbl_cmd = pbl_cmd_initaddr - uboot_size;
85 while (next_pbl_cmd < pbl_cmd_initaddr) {
Shaohui Xie5d898a02012-08-10 02:49:35 +000086 generate_pbl_cmd();
87 pbl_fget(64, fp_uboot);
88 }
89}
90
91static void check_get_hexval(char *token)
92{
93 uint32_t hexval;
94 int i;
95
96 if (!sscanf(token, "%x", &hexval)) {
97 printf("Error:%s[%d] - Invalid hex data(%s)\n", fname,
98 lineno, token);
99 exit(EXIT_FAILURE);
100 }
101 for (i = 3; i >= 0; i--) {
102 *pmem_buf++ = (hexval >> (i * 8)) & 0xff;
103 pbl_size++;
104 }
105}
106
107static void pbl_parser(char *name)
108{
109 FILE *fd = NULL;
110 char *line = NULL;
111 char *token, *saveptr1, *saveptr2;
112 size_t len = 0;
113
114 fname = name;
115 fd = fopen(name, "r");
116 if (fd == NULL) {
117 printf("Error:%s - Can't open\n", fname);
118 exit(EXIT_FAILURE);
119 }
120
121 while ((getline(&line, &len, fd)) > 0) {
122 lineno++;
123 token = strtok_r(line, "\r\n", &saveptr1);
124 /* drop all lines with zero tokens (= empty lines) */
125 if (token == NULL)
126 continue;
127 for (line = token;; line = NULL) {
128 token = strtok_r(line, " \t", &saveptr2);
129 if (token == NULL)
130 break;
131 /* Drop all text starting with '#' as comments */
132 if (token[0] == '#')
133 break;
134 check_get_hexval(token);
135 }
136 }
137 if (line)
138 free(line);
139 fclose(fd);
140}
141
Shaohui Xie5d898a02012-08-10 02:49:35 +0000142static uint32_t reverse_byte(uint32_t val)
143{
144 uint32_t temp;
145 unsigned char *p1;
146 int j;
147
148 temp = val;
149 p1 = (unsigned char *)&temp;
150 for (j = 3; j >= 0; j--)
151 *p1++ = (val >> (j * 8)) & 0xff;
152 return temp;
153}
154
155/* write end command and crc command to memory. */
156static void add_end_cmd(void)
157{
Shaohui Xie5d898a02012-08-10 02:49:35 +0000158 uint32_t crc32_pbl;
159 int i;
160 unsigned char *p = (unsigned char *)&pbl_end_cmd;
161
162 if (ENDIANNESS == 'l') {
163 for (i = 0; i < 4; i++)
164 pbl_end_cmd[i] = reverse_byte(pbl_end_cmd[i]);
165 }
166
167 for (i = 0; i < 16; i++) {
168 *pmem_buf++ = *p++;
169 pbl_size++;
170 }
171
172 /* Add PBI CRC command. */
173 *pmem_buf++ = 0x08;
Alison Wang94cb17d2014-12-03 15:00:41 +0800174 *pmem_buf++ = pbi_crc_cmd1;
175 *pmem_buf++ = pbi_crc_cmd2;
Shaohui Xie5d898a02012-08-10 02:49:35 +0000176 *pmem_buf++ = 0x40;
177 pbl_size += 4;
178
179 /* calculated CRC32 and write it to memory. */
180 crc32_pbl = pbl_crc32(0, (const char *)mem_buf, pbl_size);
181 *pmem_buf++ = (crc32_pbl >> 24) & 0xff;
182 *pmem_buf++ = (crc32_pbl >> 16) & 0xff;
183 *pmem_buf++ = (crc32_pbl >> 8) & 0xff;
184 *pmem_buf++ = (crc32_pbl) & 0xff;
185 pbl_size += 4;
Shaohui Xie5d898a02012-08-10 02:49:35 +0000186}
187
Guilherme Maciel Ferreiraf86ed6a2013-12-01 12:43:10 -0700188void pbl_load_uboot(int ifd, struct image_tool_params *params)
Shaohui Xie5d898a02012-08-10 02:49:35 +0000189{
190 FILE *fp_uboot;
191 int size;
192
193 /* parse the rcw.cfg file. */
194 pbl_parser(params->imagename);
195
196 /* parse the pbi.cfg file. */
197 pbl_parser(params->imagename2);
198
199 fp_uboot = fopen(params->datafile, "r");
200 if (fp_uboot == NULL) {
201 printf("Error: %s open failed\n", params->datafile);
202 exit(EXIT_FAILURE);
203 }
204
205 load_uboot(fp_uboot);
206 add_end_cmd();
207 fclose(fp_uboot);
208 lseek(ifd, 0, SEEK_SET);
209
210 size = pbl_size;
211 if (write(ifd, (const void *)&mem_buf, size) != size) {
212 fprintf(stderr, "Write error on %s: %s\n",
213 params->imagefile, strerror(errno));
214 exit(EXIT_FAILURE);
215 }
216}
217
218static int pblimage_check_image_types(uint8_t type)
219{
220 if (type == IH_TYPE_PBLIMAGE)
221 return EXIT_SUCCESS;
222 else
223 return EXIT_FAILURE;
224}
225
226static int pblimage_verify_header(unsigned char *ptr, int image_size,
Guilherme Maciel Ferreiraf86ed6a2013-12-01 12:43:10 -0700227 struct image_tool_params *params)
Shaohui Xie5d898a02012-08-10 02:49:35 +0000228{
229 struct pbl_header *pbl_hdr = (struct pbl_header *) ptr;
230
231 /* Only a few checks can be done: search for magic numbers */
232 if (ENDIANNESS == 'l') {
233 if (pbl_hdr->preamble != reverse_byte(RCW_PREAMBLE))
234 return -FDT_ERR_BADSTRUCTURE;
235
236 if (pbl_hdr->rcwheader != reverse_byte(RCW_HEADER))
237 return -FDT_ERR_BADSTRUCTURE;
238 } else {
239 if (pbl_hdr->preamble != RCW_PREAMBLE)
240 return -FDT_ERR_BADSTRUCTURE;
241
242 if (pbl_hdr->rcwheader != RCW_HEADER)
243 return -FDT_ERR_BADSTRUCTURE;
244 }
245 return 0;
246}
247
248static void pblimage_print_header(const void *ptr)
249{
250 printf("Image Type: Freescale PBL Boot Image\n");
251}
252
253static void pblimage_set_header(void *ptr, struct stat *sbuf, int ifd,
Guilherme Maciel Ferreiraf86ed6a2013-12-01 12:43:10 -0700254 struct image_tool_params *params)
Shaohui Xie5d898a02012-08-10 02:49:35 +0000255{
256 /*nothing need to do, pbl_load_uboot takes care of whole file. */
257}
258
Alison Wang94cb17d2014-12-03 15:00:41 +0800259int pblimage_check_params(struct image_tool_params *params)
260{
261 FILE *fp_uboot;
262 int fd;
263 struct stat st;
264
265 if (!params)
266 return EXIT_FAILURE;
267
268 fp_uboot = fopen(params->datafile, "r");
269 if (fp_uboot == NULL) {
270 printf("Error: %s open failed\n", params->datafile);
271 exit(EXIT_FAILURE);
272 }
273 fd = fileno(fp_uboot);
274
275 if (fstat(fd, &st) == -1) {
276 printf("Error: Could not determine u-boot image size. %s\n",
277 strerror(errno));
278 exit(EXIT_FAILURE);
279 }
280
281 /* For the variable size, we need to pad it to 64 byte boundary */
282 uboot_size = roundup(st.st_size, 64);
283
284 if (params->arch == IH_ARCH_ARM) {
285 arch_flag = IH_ARCH_ARM;
286 pbi_crc_cmd1 = 0x61;
287 pbi_crc_cmd2 = 0;
288 pbl_cmd_initaddr = params->addr & PBL_ADDR_24BIT_MASK;
289 pbl_cmd_initaddr |= PBL_ACS_CONT_CMD;
290 pbl_cmd_initaddr |= uboot_size;
291 pbl_end_cmd[0] = 0x09610000;
292 pbl_end_cmd[1] = 0x00000000;
293 pbl_end_cmd[2] = 0x096100c0;
294 pbl_end_cmd[3] = 0x00000000;
295 } else if (params->arch == IH_ARCH_PPC) {
296 arch_flag = IH_ARCH_PPC;
297 pbi_crc_cmd1 = 0x13;
298 pbi_crc_cmd2 = 0x80;
299 pbl_cmd_initaddr = 0x82000000;
300 pbl_end_cmd[0] = 0x09138000;
301 pbl_end_cmd[1] = 0x00000000;
302 pbl_end_cmd[2] = 0x091380c0;
303 pbl_end_cmd[3] = 0x00000000;
304 }
305
306 next_pbl_cmd = pbl_cmd_initaddr;
307 return 0;
308};
309
Shaohui Xie5d898a02012-08-10 02:49:35 +0000310/* pblimage parameters */
311static struct image_type_params pblimage_params = {
312 .name = "Freescale PBL Boot Image support",
313 .header_size = sizeof(struct pbl_header),
314 .hdr = (void *)&pblimage_header,
315 .check_image_type = pblimage_check_image_types,
Alison Wang94cb17d2014-12-03 15:00:41 +0800316 .check_params = pblimage_check_params,
Shaohui Xie5d898a02012-08-10 02:49:35 +0000317 .verify_header = pblimage_verify_header,
318 .print_header = pblimage_print_header,
319 .set_header = pblimage_set_header,
320};
321
322void init_pbl_image_type(void)
323{
324 pbl_size = 0;
Guilherme Maciel Ferreiraf86ed6a2013-12-01 12:43:10 -0700325 register_image_type(&pblimage_params);
Shaohui Xie5d898a02012-08-10 02:49:35 +0000326}