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bcae7211 A |
1 | /* |
2 | * (C) Copyright 2010 | |
3 | * Texas Instruments, <www.ti.com> | |
4 | * | |
5 | * Aneesh V <aneesh@ti.com> | |
6 | * | |
1a459660 | 7 | * SPDX-License-Identifier: GPL-2.0+ |
bcae7211 | 8 | */ |
f1c6e192 | 9 | |
bcae7211 | 10 | #include <common.h> |
8bee2d25 | 11 | #include <binman_sym.h> |
11516518 | 12 | #include <dm.h> |
47f7bcae | 13 | #include <spl.h> |
bcae7211 | 14 | #include <asm/u-boot.h> |
bb085b87 | 15 | #include <nand.h> |
8cf686e1 | 16 | #include <fat.h> |
efb2172e | 17 | #include <version.h> |
8cf686e1 | 18 | #include <image.h> |
2d01dd95 | 19 | #include <malloc.h> |
11516518 | 20 | #include <dm/root.h> |
761ca31e | 21 | #include <linux/compiler.h> |
6e7585bb | 22 | #include <fdt_support.h> |
bcae7211 A |
23 | |
24 | DECLARE_GLOBAL_DATA_PTR; | |
25 | ||
3c6f8a0d SR |
26 | #ifndef CONFIG_SYS_UBOOT_START |
27 | #define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE | |
28 | #endif | |
ae83d882 | 29 | #ifndef CONFIG_SYS_MONITOR_LEN |
e76caa62 | 30 | /* Unknown U-Boot size, let's assume it will not be more than 200 KB */ |
ae83d882 SB |
31 | #define CONFIG_SYS_MONITOR_LEN (200 * 1024) |
32 | #endif | |
33 | ||
47f7bcae | 34 | u32 *boot_params_ptr = NULL; |
9ea5c6ef | 35 | |
8bee2d25 SG |
36 | /* See spl.h for information about this */ |
37 | binman_sym_declare(ulong, u_boot_any, pos); | |
38 | ||
6507f133 | 39 | /* Define board data structure */ |
bcae7211 A |
40 | static bd_t bdata __attribute__ ((section(".data"))); |
41 | ||
496c5483 HS |
42 | /* |
43 | * Board-specific Platform code can reimplement show_boot_progress () if needed | |
44 | */ | |
45 | __weak void show_boot_progress(int val) {} | |
46 | ||
379c19ab SS |
47 | /* |
48 | * Default function to determine if u-boot or the OS should | |
49 | * be started. This implementation always returns 1. | |
50 | * | |
51 | * Please implement your own board specific funcion to do this. | |
52 | * | |
53 | * RETURN | |
54 | * 0 to not start u-boot | |
55 | * positive if u-boot should start | |
56 | */ | |
57 | #ifdef CONFIG_SPL_OS_BOOT | |
58 | __weak int spl_start_uboot(void) | |
59 | { | |
026b2fe3 TR |
60 | puts("SPL: Please implement spl_start_uboot() for your board\n"); |
61 | puts("SPL: Direct Linux boot not active!\n"); | |
379c19ab SS |
62 | return 1; |
63 | } | |
431889d6 | 64 | |
6e7585bb R |
65 | /* weak default platform specific function to initialize |
66 | * dram banks | |
67 | */ | |
68 | __weak int dram_init_banksize(void) | |
69 | { | |
70 | return 0; | |
71 | } | |
72 | ||
431889d6 LM |
73 | /* |
74 | * Weak default function for arch specific zImage check. Return zero | |
75 | * and fill start and end address if image is recognized. | |
76 | */ | |
77 | int __weak bootz_setup(ulong image, ulong *start, ulong *end) | |
78 | { | |
79 | return 1; | |
80 | } | |
379c19ab SS |
81 | #endif |
82 | ||
6e7585bb R |
83 | void spl_fixup_fdt(void) |
84 | { | |
85 | #if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR) | |
86 | void *fdt_blob = (void *)CONFIG_SYS_SPL_ARGS_ADDR; | |
87 | int err; | |
88 | ||
89 | err = fdt_check_header(fdt_blob); | |
90 | if (err < 0) { | |
91 | printf("fdt_root: %s\n", fdt_strerror(err)); | |
92 | return; | |
93 | } | |
94 | ||
95 | /* fixup the memory dt node */ | |
96 | err = fdt_shrink_to_minimum(fdt_blob, 0); | |
97 | if (err == 0) { | |
98 | printf("spl: fdt_shrink_to_minimum err - %d\n", err); | |
99 | return; | |
100 | } | |
101 | ||
102 | err = arch_fixup_fdt(fdt_blob); | |
103 | if (err) { | |
104 | printf("spl: arch_fixup_fdt err - %d\n", err); | |
105 | return; | |
106 | } | |
107 | #endif | |
108 | } | |
109 | ||
ea8256f0 SR |
110 | /* |
111 | * Weak default function for board specific cleanup/preparation before | |
112 | * Linux boot. Some boards/platforms might not need it, so just provide | |
113 | * an empty stub here. | |
114 | */ | |
115 | __weak void spl_board_prepare_for_linux(void) | |
116 | { | |
117 | /* Nothing to do! */ | |
118 | } | |
119 | ||
3a3b9147 MS |
120 | __weak void spl_board_prepare_for_boot(void) |
121 | { | |
122 | /* Nothing to do! */ | |
123 | } | |
124 | ||
d95ceb97 | 125 | void spl_set_header_raw_uboot(struct spl_image_info *spl_image) |
0c3117b1 | 126 | { |
8bee2d25 SG |
127 | ulong u_boot_pos = binman_sym(ulong, u_boot_any, pos); |
128 | ||
d95ceb97 | 129 | spl_image->size = CONFIG_SYS_MONITOR_LEN; |
8bee2d25 SG |
130 | if (u_boot_pos != BINMAN_SYM_MISSING) { |
131 | /* biman does not support separate entry addresses at present */ | |
132 | spl_image->entry_point = u_boot_pos; | |
133 | spl_image->load_addr = u_boot_pos; | |
134 | } else { | |
135 | spl_image->entry_point = CONFIG_SYS_UBOOT_START; | |
136 | spl_image->load_addr = CONFIG_SYS_TEXT_BASE; | |
137 | } | |
d95ceb97 SG |
138 | spl_image->os = IH_OS_U_BOOT; |
139 | spl_image->name = "U-Boot"; | |
0c3117b1 HS |
140 | } |
141 | ||
71316c1d SG |
142 | int spl_parse_image_header(struct spl_image_info *spl_image, |
143 | const struct image_header *header) | |
8cf686e1 | 144 | { |
77552b06 | 145 | if (image_get_magic(header) == IH_MAGIC) { |
722a6b17 AD |
146 | #ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT |
147 | u32 header_size = sizeof(struct image_header); | |
148 | ||
71316c1d | 149 | if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) { |
022b4975 SR |
150 | /* |
151 | * On some system (e.g. powerpc), the load-address and | |
152 | * entry-point is located at address 0. We can't load | |
153 | * to 0-0x40. So skip header in this case. | |
154 | */ | |
71316c1d SG |
155 | spl_image->load_addr = image_get_load(header); |
156 | spl_image->entry_point = image_get_ep(header); | |
157 | spl_image->size = image_get_data_size(header); | |
022b4975 | 158 | } else { |
71316c1d | 159 | spl_image->entry_point = image_get_load(header); |
022b4975 | 160 | /* Load including the header */ |
71316c1d | 161 | spl_image->load_addr = spl_image->entry_point - |
022b4975 | 162 | header_size; |
71316c1d | 163 | spl_image->size = image_get_data_size(header) + |
022b4975 SR |
164 | header_size; |
165 | } | |
71316c1d SG |
166 | spl_image->os = image_get_os(header); |
167 | spl_image->name = image_get_name(header); | |
11e1479b | 168 | debug("spl: payload image: %.*s load addr: 0x%lx size: %d\n", |
3fe3839a | 169 | IH_NMLEN, spl_image->name, |
71316c1d | 170 | spl_image->load_addr, spl_image->size); |
722a6b17 AD |
171 | #else |
172 | /* LEGACY image not supported */ | |
2d2531be | 173 | debug("Legacy boot image support not enabled, proceeding to other boot methods\n"); |
722a6b17 AD |
174 | return -EINVAL; |
175 | #endif | |
8cf686e1 | 176 | } else { |
8c80eb3b AA |
177 | #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE |
178 | /* | |
179 | * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the | |
180 | * code which loads images in SPL cannot guarantee that | |
181 | * absolutely all read errors will be reported. | |
182 | * An example is the LPC32XX MLC NAND driver, which | |
183 | * will consider that a completely unreadable NAND block | |
184 | * is bad, and thus should be skipped silently. | |
185 | */ | |
186 | panic("** no mkimage signature but raw image not supported"); | |
85a37729 PK |
187 | #endif |
188 | ||
431889d6 LM |
189 | #ifdef CONFIG_SPL_OS_BOOT |
190 | ulong start, end; | |
191 | ||
192 | if (!bootz_setup((ulong)header, &start, &end)) { | |
71316c1d SG |
193 | spl_image->name = "Linux"; |
194 | spl_image->os = IH_OS_LINUX; | |
195 | spl_image->load_addr = CONFIG_SYS_LOAD_ADDR; | |
196 | spl_image->entry_point = CONFIG_SYS_LOAD_ADDR; | |
197 | spl_image->size = end - start; | |
11e1479b | 198 | debug("spl: payload zImage, load addr: 0x%lx size: %d\n", |
71316c1d | 199 | spl_image->load_addr, spl_image->size); |
431889d6 LM |
200 | return 0; |
201 | } | |
202 | #endif | |
85a37729 | 203 | |
24eb39b5 | 204 | #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT |
8cf686e1 | 205 | /* Signature not found - assume u-boot.bin */ |
026b2fe3 | 206 | debug("mkimage signature not found - ih_magic = %x\n", |
8cf686e1 | 207 | header->ih_magic); |
71316c1d | 208 | spl_set_header_raw_uboot(spl_image); |
24eb39b5 AD |
209 | #else |
210 | /* RAW image not supported, proceed to other boot methods. */ | |
2d2531be | 211 | debug("Raw boot image support not enabled, proceeding to other boot methods\n"); |
24eb39b5 | 212 | return -EINVAL; |
8c80eb3b | 213 | #endif |
8cf686e1 | 214 | } |
24eb39b5 | 215 | |
7e0f2267 | 216 | return 0; |
8cf686e1 A |
217 | } |
218 | ||
a759f1e0 | 219 | __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) |
8cf686e1 | 220 | { |
4a0eb757 S |
221 | typedef void __noreturn (*image_entry_noargs_t)(void); |
222 | ||
8cf686e1 | 223 | image_entry_noargs_t image_entry = |
11e1479b | 224 | (image_entry_noargs_t)spl_image->entry_point; |
8cf686e1 | 225 | |
11e1479b | 226 | debug("image entry point: 0x%lX\n", spl_image->entry_point); |
4a0eb757 | 227 | image_entry(); |
8cf686e1 A |
228 | } |
229 | ||
340f418a | 230 | static int spl_common_init(bool setup_malloc) |
bcae7211 | 231 | { |
f3d46bd6 SG |
232 | int ret; |
233 | ||
340f418a EC |
234 | debug("spl_early_init()\n"); |
235 | ||
f1896c45 | 236 | #if CONFIG_VAL(SYS_MALLOC_F_LEN) |
340f418a | 237 | if (setup_malloc) { |
94b9e22e | 238 | #ifdef CONFIG_MALLOC_F_ADDR |
340f418a | 239 | gd->malloc_base = CONFIG_MALLOC_F_ADDR; |
94b9e22e | 240 | #endif |
f1896c45 | 241 | gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN); |
340f418a EC |
242 | gd->malloc_ptr = 0; |
243 | } | |
24dafad5 | 244 | #endif |
824bb1b4 SG |
245 | ret = bootstage_init(true); |
246 | if (ret) { | |
247 | debug("%s: Failed to set up bootstage: ret=%d\n", __func__, | |
248 | ret); | |
249 | return ret; | |
250 | } | |
251 | bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl"); | |
d223e0a8 | 252 | if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) { |
f3d46bd6 SG |
253 | ret = fdtdec_setup(); |
254 | if (ret) { | |
255 | debug("fdtdec_setup() returned error %d\n", ret); | |
070d00b8 | 256 | return ret; |
f3d46bd6 SG |
257 | } |
258 | } | |
f1c6e192 | 259 | if (CONFIG_IS_ENABLED(DM)) { |
824bb1b4 | 260 | bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl"); |
7f73ca48 | 261 | /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */ |
7d23b9cf | 262 | ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA)); |
824bb1b4 | 263 | bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL); |
f3d46bd6 SG |
264 | if (ret) { |
265 | debug("dm_init_and_scan() returned error %d\n", ret); | |
070d00b8 | 266 | return ret; |
f3d46bd6 SG |
267 | } |
268 | } | |
340f418a EC |
269 | |
270 | return 0; | |
271 | } | |
272 | ||
d1fc0a31 YS |
273 | void spl_set_bd(void) |
274 | { | |
275 | if (!gd->bd) | |
276 | gd->bd = &bdata; | |
277 | } | |
278 | ||
340f418a EC |
279 | int spl_early_init(void) |
280 | { | |
281 | int ret; | |
282 | ||
283 | ret = spl_common_init(true); | |
284 | if (ret) | |
285 | return ret; | |
286 | gd->flags |= GD_FLG_SPL_EARLY_INIT; | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | int spl_init(void) | |
292 | { | |
293 | int ret; | |
cf334edf TR |
294 | bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) && |
295 | IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE)); | |
340f418a EC |
296 | |
297 | if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) { | |
cf334edf | 298 | ret = spl_common_init(setup_malloc); |
340f418a EC |
299 | if (ret) |
300 | return ret; | |
301 | } | |
070d00b8 | 302 | gd->flags |= GD_FLG_SPL_INIT; |
2d01dd95 | 303 | |
070d00b8 SG |
304 | return 0; |
305 | } | |
306 | ||
f101e4bd NK |
307 | #ifndef BOOT_DEVICE_NONE |
308 | #define BOOT_DEVICE_NONE 0xdeadbeef | |
309 | #endif | |
310 | ||
f101e4bd NK |
311 | __weak void board_boot_order(u32 *spl_boot_list) |
312 | { | |
313 | spl_boot_list[0] = spl_boot_device(); | |
314 | } | |
315 | ||
a0a80290 SG |
316 | static struct spl_image_loader *spl_ll_find_loader(uint boot_device) |
317 | { | |
318 | struct spl_image_loader *drv = | |
319 | ll_entry_start(struct spl_image_loader, spl_image_loader); | |
320 | const int n_ents = | |
321 | ll_entry_count(struct spl_image_loader, spl_image_loader); | |
322 | struct spl_image_loader *entry; | |
323 | ||
324 | for (entry = drv; entry != drv + n_ents; entry++) { | |
325 | if (boot_device == entry->boot_device) | |
326 | return entry; | |
327 | } | |
328 | ||
329 | /* Not found */ | |
330 | return NULL; | |
331 | } | |
332 | ||
29d357d7 SG |
333 | static int spl_load_image(struct spl_image_info *spl_image, |
334 | struct spl_image_loader *loader) | |
070d00b8 | 335 | { |
ecdfd69a SG |
336 | struct spl_boot_device bootdev; |
337 | ||
29d357d7 | 338 | bootdev.boot_device = loader->boot_device; |
ecdfd69a SG |
339 | bootdev.boot_device_name = NULL; |
340 | ||
540bfe7d SG |
341 | return loader->load_image(spl_image, &bootdev); |
342 | } | |
343 | ||
344 | /** | |
345 | * boot_from_devices() - Try loading an booting U-Boot from a list of devices | |
346 | * | |
347 | * @spl_image: Place to put the image details if successful | |
348 | * @spl_boot_list: List of boot devices to try | |
349 | * @count: Number of elements in spl_boot_list | |
350 | * @return 0 if OK, -ve on error | |
351 | */ | |
352 | static int boot_from_devices(struct spl_image_info *spl_image, | |
353 | u32 spl_boot_list[], int count) | |
354 | { | |
355 | int i; | |
356 | ||
357 | for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) { | |
358 | struct spl_image_loader *loader; | |
359 | ||
540bfe7d | 360 | loader = spl_ll_find_loader(spl_boot_list[i]); |
18f26fdb | 361 | #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT) |
2acf35db | 362 | if (loader) |
cf947da1 | 363 | printf("Trying to boot from %s\n", loader->name); |
2acf35db | 364 | else |
540bfe7d | 365 | puts("SPL: Unsupported Boot Device!\n"); |
18f26fdb | 366 | #endif |
29d357d7 | 367 | if (loader && !spl_load_image(spl_image, loader)) |
540bfe7d SG |
368 | return 0; |
369 | } | |
370 | ||
97d9df0a | 371 | return -ENODEV; |
5211b87e NK |
372 | } |
373 | ||
374 | void board_init_r(gd_t *dummy1, ulong dummy2) | |
375 | { | |
d32b2d1c SG |
376 | u32 spl_boot_list[] = { |
377 | BOOT_DEVICE_NONE, | |
378 | BOOT_DEVICE_NONE, | |
379 | BOOT_DEVICE_NONE, | |
380 | BOOT_DEVICE_NONE, | |
381 | BOOT_DEVICE_NONE, | |
382 | }; | |
383 | struct spl_image_info spl_image; | |
5211b87e NK |
384 | |
385 | debug(">>spl:board_init_r()\n"); | |
d1fc0a31 YS |
386 | |
387 | spl_set_bd(); | |
388 | ||
6e7585bb R |
389 | #ifdef CONFIG_SPL_OS_BOOT |
390 | dram_init_banksize(); | |
391 | #endif | |
5211b87e NK |
392 | |
393 | #if defined(CONFIG_SYS_SPL_MALLOC_START) | |
394 | mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START, | |
395 | CONFIG_SYS_SPL_MALLOC_SIZE); | |
396 | gd->flags |= GD_FLG_FULL_MALLOC_INIT; | |
397 | #endif | |
398 | if (!(gd->flags & GD_FLG_SPL_INIT)) { | |
399 | if (spl_init()) | |
400 | hang(); | |
401 | } | |
f9d42d82 | 402 | #if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6) |
5211b87e NK |
403 | /* |
404 | * timer_init() does not exist on PPC systems. The timer is initialized | |
405 | * and enabled (decrementer) in interrupt_init() here. | |
406 | */ | |
407 | timer_init(); | |
408 | #endif | |
409 | ||
af2f4426 | 410 | #if CONFIG_IS_ENABLED(BOARD_INIT) |
5211b87e NK |
411 | spl_board_init(); |
412 | #endif | |
413 | ||
d32b2d1c | 414 | memset(&spl_image, '\0', sizeof(spl_image)); |
5bf5250e VM |
415 | #ifdef CONFIG_SYS_SPL_ARGS_ADDR |
416 | spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR; | |
417 | #endif | |
f101e4bd | 418 | board_boot_order(spl_boot_list); |
f101e4bd | 419 | |
540bfe7d SG |
420 | if (boot_from_devices(&spl_image, spl_boot_list, |
421 | ARRAY_SIZE(spl_boot_list))) { | |
f101e4bd | 422 | puts("SPL: failed to boot from all boot devices\n"); |
5211b87e | 423 | hang(); |
f101e4bd | 424 | } |
5211b87e | 425 | |
6bcdd66d VM |
426 | #ifdef CONFIG_CPU_V7M |
427 | spl_image.entry_point |= 0x1; | |
428 | #endif | |
9ea5c6ef | 429 | switch (spl_image.os) { |
8cf686e1 A |
430 | case IH_OS_U_BOOT: |
431 | debug("Jumping to U-Boot\n"); | |
8cf686e1 | 432 | break; |
1d379090 PT |
433 | #if CONFIG_IS_ENABLED(ATF) |
434 | case IH_OS_ARM_TRUSTED_FIRMWARE: | |
435 | debug("Jumping to U-Boot via ARM Trusted Firmware\n"); | |
436 | spl_invoke_atf(&spl_image); | |
437 | break; | |
438 | #endif | |
379c19ab SS |
439 | #ifdef CONFIG_SPL_OS_BOOT |
440 | case IH_OS_LINUX: | |
441 | debug("Jumping to Linux\n"); | |
6e7585bb | 442 | spl_fixup_fdt(); |
379c19ab | 443 | spl_board_prepare_for_linux(); |
5bf5250e | 444 | jump_to_image_linux(&spl_image); |
379c19ab | 445 | #endif |
8cf686e1 | 446 | default: |
42120981 | 447 | debug("Unsupported OS image.. Jumping nevertheless..\n"); |
8cf686e1 | 448 | } |
f1896c45 | 449 | #if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE) |
fb4f5e7c SG |
450 | debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr, |
451 | gd->malloc_ptr / 1024); | |
452 | #endif | |
824bb1b4 SG |
453 | #ifdef CONFIG_BOOTSTAGE_STASH |
454 | int ret; | |
455 | ||
456 | bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl"); | |
457 | ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR, | |
458 | CONFIG_BOOTSTAGE_STASH_SIZE); | |
459 | if (ret) | |
460 | debug("Failed to stash bootstage: err=%d\n", ret); | |
461 | #endif | |
a8c5112a | 462 | |
a8c5112a | 463 | debug("loaded - jumping to U-Boot...\n"); |
3a3b9147 | 464 | spl_board_prepare_for_boot(); |
a759f1e0 | 465 | jump_to_image_no_args(&spl_image); |
bcae7211 A |
466 | } |
467 | ||
6507f133 TR |
468 | /* |
469 | * This requires UART clocks to be enabled. In order for this to work the | |
470 | * caller must ensure that the gd pointer is valid. | |
471 | */ | |
bcae7211 A |
472 | void preloader_console_init(void) |
473 | { | |
bcae7211 A |
474 | gd->baudrate = CONFIG_BAUDRATE; |
475 | ||
bcae7211 A |
476 | serial_init(); /* serial communications setup */ |
477 | ||
b88befa5 IY |
478 | gd->have_console = 1; |
479 | ||
0292bc0d | 480 | #ifndef CONFIG_SPL_DISABLE_BANNER_PRINT |
026b2fe3 | 481 | puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \ |
0b674a31 | 482 | U_BOOT_TIME " " U_BOOT_TZ ")\n"); |
0292bc0d | 483 | #endif |
861a86f4 TR |
484 | #ifdef CONFIG_SPL_DISPLAY_PRINT |
485 | spl_display_print(); | |
486 | #endif | |
cc3f7058 | 487 | } |
db910353 SG |
488 | |
489 | /** | |
490 | * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution | |
491 | * | |
492 | * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM | |
493 | * for the main board_init_r() execution. This is typically because we need | |
494 | * more stack space for things like the MMC sub-system. | |
495 | * | |
496 | * This function calculates the stack position, copies the global_data into | |
adc421e4 AA |
497 | * place, sets the new gd (except for ARM, for which setting GD within a C |
498 | * function may not always work) and returns the new stack position. The | |
499 | * caller is responsible for setting up the sp register and, in the case | |
500 | * of ARM, setting up gd. | |
501 | * | |
502 | * All of this is done using the same layout and alignments as done in | |
503 | * board_init_f_init_reserve() / board_init_f_alloc_reserve(). | |
db910353 SG |
504 | * |
505 | * @return new stack location, or 0 to use the same stack | |
506 | */ | |
507 | ulong spl_relocate_stack_gd(void) | |
508 | { | |
509 | #ifdef CONFIG_SPL_STACK_R | |
510 | gd_t *new_gd; | |
adc421e4 | 511 | ulong ptr = CONFIG_SPL_STACK_R_ADDR; |
db910353 | 512 | |
ae2cee2e | 513 | #if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN) |
dcfcb8d4 | 514 | if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) { |
dcfcb8d4 HG |
515 | ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN; |
516 | gd->malloc_base = ptr; | |
517 | gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN; | |
518 | gd->malloc_ptr = 0; | |
519 | } | |
520 | #endif | |
adc421e4 AA |
521 | /* Get stack position: use 8-byte alignment for ABI compliance */ |
522 | ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16); | |
523 | new_gd = (gd_t *)ptr; | |
524 | memcpy(new_gd, (void *)gd, sizeof(gd_t)); | |
2f11cd91 SG |
525 | #if CONFIG_IS_ENABLED(DM) |
526 | dm_fixup_for_gd_move(new_gd); | |
527 | #endif | |
adc421e4 AA |
528 | #if !defined(CONFIG_ARM) |
529 | gd = new_gd; | |
530 | #endif | |
db910353 SG |
531 | return ptr; |
532 | #else | |
533 | return 0; | |
534 | #endif | |
535 | } |