2 * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
3 * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
4 * Copyright (c) 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
35 #include "api_public.h"
36 #include "bootstrap.h"
41 #define nitems(x) (sizeof((x)) / sizeof((x)[0]))
45 #define HEAP_SIZE (2 * 1024 * 1024)
48 struct uboot_devdesc currdev;
49 struct arch_switch archsw; /* MI/MD interface boundary */
52 uintptr_t uboot_heap_start;
53 uintptr_t uboot_heap_end;
59 { "disk", DEV_TYP_STOR },
60 { "ide", DEV_TYP_STOR | DT_STOR_IDE },
61 { "mmc", DEV_TYP_STOR | DT_STOR_MMC },
62 { "sata", DEV_TYP_STOR | DT_STOR_SATA },
63 { "scsi", DEV_TYP_STOR | DT_STOR_SCSI },
64 { "usb", DEV_TYP_STOR | DT_STOR_USB },
65 { "net", DEV_TYP_NET }
70 extern unsigned char _etext[];
71 extern unsigned char _edata[];
72 extern unsigned char __bss_start[];
73 extern unsigned char __sbss_start[];
74 extern unsigned char __sbss_end[];
75 extern unsigned char _end[];
77 #ifdef LOADER_FDT_SUPPORT
78 extern int command_fdt_internal(int argc, char *argv[]);
82 dump_sig(struct api_signature *sig)
85 printf("signature:\n");
86 printf(" version\t= %d\n", sig->version);
87 printf(" checksum\t= 0x%08x\n", sig->checksum);
88 printf(" sc entry\t= 0x%08x\n", sig->syscall);
96 printf("\naddresses info:\n");
97 printf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
98 printf(" _edata = 0x%08x\n", (uint32_t)_edata);
99 printf(" __sbss_start = 0x%08x\n", (uint32_t)__sbss_start);
100 printf(" __sbss_end = 0x%08x\n", (uint32_t)__sbss_end);
101 printf(" __sbss_start = 0x%08x\n", (uint32_t)__bss_start);
102 printf(" _end = 0x%08x\n", (uint32_t)_end);
103 printf(" syscall entry = 0x%08x\n", (uint32_t)syscall_ptr);
108 memsize(struct sys_info *si, int flags)
114 for (i = 0; i < si->mr_no; i++)
115 if (si->mr[i].flags == flags && si->mr[i].size)
116 size += (si->mr[i].size);
126 int t[3] = { MR_ATTR_DRAM, MR_ATTR_FLASH, MR_ATTR_SRAM };
129 if ((si = ub_get_sys_info()) == NULL)
130 panic("could not retrieve system info");
132 for (i = 0; i < 3; i++) {
133 size = memsize(si, t[i]);
135 printf("%s: %juMB\n", ub_mem_type(t[i]),
136 (uintmax_t)(size / 1024 / 1024));
141 get_device_type(const char *devstr, int *devtype)
145 struct device_type *dt;
148 for (i = 0; i < nitems(device_types); i++) {
149 dt = &device_types[i];
150 namelen = strlen(dt->name);
151 if (strncmp(dt->name, devstr, namelen) == 0) {
153 return (devstr + namelen);
156 printf("Unknown device type '%s'\n", devstr);
159 *devtype = DEV_TYP_NONE;
164 device_typename(int type)
168 for (i = 0; i < nitems(device_types); i++)
169 if (device_types[i].type == type)
170 return (device_types[i].name);
172 return ("<unknown>");
176 * Parse a device string into type, unit, slice and partition numbers. A
177 * returned value of -1 for type indicates a search should be done for the
178 * first loadable device, otherwise a returned value of -1 for unit
179 * indicates a search should be done for the first loadable device of the
182 * The returned values for slice and partition are interpreted by
185 * The device string can be a standard loader(8) disk specifier:
187 * disk<unit>s<slice> disk0s1
188 * disk<unit>s<slice><partition> disk1s2a
189 * disk<unit>p<partition> disk0p4
191 * or one of the following formats:
193 * Valid device strings: For device types:
195 * <type_name> DEV_TYP_STOR, DEV_TYP_NET
196 * <type_name><unit> DEV_TYP_STOR, DEV_TYP_NET
197 * <type_name><unit>: DEV_TYP_STOR, DEV_TYP_NET
198 * <type_name><unit>:<slice> DEV_TYP_STOR
199 * <type_name><unit>:<slice>. DEV_TYP_STOR
200 * <type_name><unit>:<slice>.<partition> DEV_TYP_STOR
202 * For valid type names, see the device_types array, above.
204 * Slice numbers are 1-based. 0 is a wildcard.
207 get_load_device(int *type, int *unit, int *slice, int *partition)
209 struct disk_devdesc dev;
214 *type = DEV_TYP_NONE;
216 *slice = D_SLICEWILD;
217 *partition = D_PARTWILD;
219 devstr = ub_env_get("loaderdev");
220 if (devstr == NULL) {
221 printf("U-Boot env: loaderdev not set, will probe all devices.\n");
224 printf("U-Boot env: loaderdev='%s'\n", devstr);
226 p = get_device_type(devstr, type);
229 * If type is DEV_TYP_STOR we have a disk-like device. If the remainder
230 * of the string contains spaces, dots, or a colon in any location other
231 * than the last char, it's legacy format. Otherwise it might be
232 * standard loader(8) format (e.g., disk0s2a or mmc1p12), so try to
233 * parse the remainder of the string as such, and if it works, return
234 * those results. Otherwise we'll fall through to the code that parses
237 if (*type & DEV_TYP_STOR) {
238 size_t len = strlen(p);
239 if (strcspn(p, " .") == len && strcspn(p, ":") >= len - 1 &&
240 disk_parsedev(&dev, p, NULL) == 0) {
241 *unit = dev.dd.d_unit;
242 *slice = dev.d_slice;
243 *partition = dev.d_partition;
248 /* Ignore optional spaces after the device name. */
252 /* Unknown device name, or a known name without unit number. */
253 if ((*type == DEV_TYP_NONE) || (*p == '\0')) {
257 /* Malformed unit number. */
259 *type = DEV_TYP_NONE;
263 /* Guaranteed to extract a number from the string, as *p is a digit. */
264 *unit = strtol(p, &endp, 10);
267 /* Known device name with unit number and nothing else. */
272 /* Device string is malformed beyond unit number. */
274 *type = DEV_TYP_NONE;
281 /* No slice and partition specification. */
285 /* Only DEV_TYP_STOR devices can have a slice specification. */
286 if (!(*type & DEV_TYP_STOR)) {
287 *type = DEV_TYP_NONE;
292 *slice = strtoul(p, &endp, 10);
294 /* Malformed slice number. */
296 *type = DEV_TYP_NONE;
298 *slice = D_SLICEWILD;
304 /* No partition specification. */
308 /* Device string is malformed beyond slice number. */
310 *type = DEV_TYP_NONE;
312 *slice = D_SLICEWILD;
318 /* No partition specification. */
322 *partition = strtol(p, &endp, 10);
325 /* Full, valid device string. */
329 /* Junk beyond partition number. */
330 *type = DEV_TYP_NONE;
332 *slice = D_SLICEWILD;
333 *partition = D_PARTWILD;
337 print_disk_probe_info()
342 if (currdev.d_disk.d_slice == D_SLICENONE)
343 strlcpy(slice, "<none>", sizeof(slice));
344 else if (currdev.d_disk.d_slice == D_SLICEWILD)
345 strlcpy(slice, "<auto>", sizeof(slice));
347 snprintf(slice, sizeof(slice), "%d", currdev.d_disk.d_slice);
349 if (currdev.d_disk.d_partition == D_PARTNONE)
350 strlcpy(partition, "<none>", sizeof(partition));
351 else if (currdev.d_disk.d_partition == D_PARTWILD)
352 strlcpy(partition, "<auto>", sizeof(partition));
354 snprintf(partition, sizeof(partition), "%d",
355 currdev.d_disk.d_partition);
357 printf(" Checking unit=%d slice=%s partition=%s...",
358 currdev.dd.d_unit, slice, partition);
363 probe_disks(int devidx, int load_type, int load_unit, int load_slice,
366 int open_result, unit;
369 currdev.d_disk.d_slice = load_slice;
370 currdev.d_disk.d_partition = load_partition;
372 f.f_devdata = &currdev;
375 if (load_type == -1) {
376 printf(" Probing all disk devices...\n");
377 /* Try each disk in succession until one works. */
378 for (currdev.dd.d_unit = 0; currdev.dd.d_unit < UB_MAX_DEV;
379 currdev.dd.d_unit++) {
380 print_disk_probe_info();
381 open_result = devsw[devidx]->dv_open(&f, &currdev);
382 if (open_result == 0) {
391 if (load_unit == -1) {
392 printf(" Probing all %s devices...\n", device_typename(load_type));
393 /* Try each disk of given type in succession until one works. */
394 for (unit = 0; unit < UB_MAX_DEV; unit++) {
395 currdev.dd.d_unit = uboot_diskgetunit(load_type, unit);
396 if (currdev.dd.d_unit == -1)
398 print_disk_probe_info();
399 open_result = devsw[devidx]->dv_open(&f, &currdev);
400 if (open_result == 0) {
409 if ((currdev.dd.d_unit = uboot_diskgetunit(load_type, load_unit)) != -1) {
410 print_disk_probe_info();
411 open_result = devsw[devidx]->dv_open(&f,&currdev);
412 if (open_result == 0) {
419 printf(" Requested disk type/unit/slice/partition not found\n");
424 main(int argc, char **argv)
426 struct api_signature *sig = NULL;
427 int load_type, load_unit, load_slice, load_partition;
432 * We first check if a command line argument was passed to us containing
433 * API's signature address. If it wasn't then we try to search for the
434 * API signature via the usual hinted address.
435 * If we can't find the magic signature and related info, exit with a
436 * unique error code that U-Boot reports as "## Application terminated,
437 * rc = 0xnnbadab1". Hopefully 'badab1' looks enough like "bad api" to
438 * provide a clue. It's better than 0xffffffff anyway.
440 if (!api_parse_cmdline_sig(argc, argv, &sig) && !api_search_sig(&sig))
443 syscall_ptr = sig->syscall;
444 if (syscall_ptr == NULL)
447 if (sig->version > API_SIG_VERSION)
450 /* Clear BSS sections */
451 bzero(__sbss_start, __sbss_end - __sbss_start);
452 bzero(__bss_start, _end - __bss_start);
455 * Initialise the heap as early as possible. Once this is done,
456 * alloc() is usable. We are using the stack u-boot set up near the top
457 * of physical ram; hopefully there is sufficient space between the end
458 * of our bss and the bottom of the u-boot stack to avoid overlap.
460 uboot_heap_start = round_page((uintptr_t)end);
461 uboot_heap_end = uboot_heap_start + HEAP_SIZE;
462 setheap((void *)uboot_heap_start, (void *)uboot_heap_end);
468 printf("Compatible U-Boot API signature found @%p\n", sig);
470 printf("\n%s", bootprog_info);
479 * Enumerate U-Boot devices
481 if ((devs_no = ub_dev_enum()) == 0) {
482 printf("no U-Boot devices found");
485 printf("Number of U-Boot devices: %d\n", devs_no);
487 get_load_device(&load_type, &load_unit, &load_slice, &load_partition);
490 * March through the device switch probing for things.
492 for (i = 0; devsw[i] != NULL; i++) {
494 if (devsw[i]->dv_init == NULL)
496 if ((devsw[i]->dv_init)() != 0)
499 printf("Found U-Boot device: %s\n", devsw[i]->dv_name);
501 currdev.dd.d_dev = devsw[i];
502 currdev.dd.d_unit = 0;
504 if ((load_type == DEV_TYP_NONE || (load_type & DEV_TYP_STOR)) &&
505 strcmp(devsw[i]->dv_name, "disk") == 0) {
506 if (probe_disks(i, load_type, load_unit, load_slice,
507 load_partition) == 0)
511 if ((load_type == DEV_TYP_NONE || (load_type & DEV_TYP_NET)) &&
512 strcmp(devsw[i]->dv_name, "net") == 0)
517 * If we couldn't find a boot device, return an error to u-boot.
518 * U-boot may be running a boot script that can try something different
519 * so returning an error is better than forcing a reboot.
521 if (devsw[i] == NULL) {
522 printf("No boot device found!\n");
526 ldev = uboot_fmtdev(&currdev);
527 env_setenv("currdev", EV_VOLATILE, ldev, uboot_setcurrdev, env_nounset);
528 env_setenv("loaddev", EV_VOLATILE, ldev, env_noset, env_nounset);
529 printf("Booting from %s\n", ldev);
532 setenv("LINES", "24", 1); /* optional */
533 setenv("prompt", "loader>", 1);
535 setenv("usefdt", "1", 1);
538 archsw.arch_loadaddr = uboot_loadaddr;
539 archsw.arch_getdev = uboot_getdev;
540 archsw.arch_copyin = uboot_copyin;
541 archsw.arch_copyout = uboot_copyout;
542 archsw.arch_readin = uboot_readin;
543 archsw.arch_autoload = uboot_autoload;
545 interact(); /* doesn't return */
551 COMMAND_SET(heap, "heap", "show heap usage", command_heap);
553 command_heap(int argc, char *argv[])
556 printf("heap base at %p, top at %p, used %td\n", end, sbrk(0),
562 COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
564 command_reboot(int argc, char *argv[])
567 printf("Resetting...\n");
570 printf("Reset failed!\n");
575 COMMAND_SET(devinfo, "devinfo", "show U-Boot devices", command_devinfo);
577 command_devinfo(int argc, char *argv[])
581 if ((devs_no = ub_dev_enum()) == 0) {
582 command_errmsg = "no U-Boot devices found!?";
586 printf("U-Boot devices:\n");
587 for (i = 0; i < devs_no; i++) {
594 COMMAND_SET(sysinfo, "sysinfo", "show U-Boot system info", command_sysinfo);
596 command_sysinfo(int argc, char *argv[])
600 if ((si = ub_get_sys_info()) == NULL) {
601 command_errmsg = "could not retrieve U-Boot sys info!?";
605 printf("U-Boot system info:\n");
617 handle_uboot_env_var(enum ubenv_action action, const char * var)
625 * On an import with the variable name formatted as ldname=ubname,
626 * import the uboot variable ubname into the loader variable ldname,
627 * otherwise the historical behavior is to import to uboot.ubname.
629 if (action == UBENV_IMPORT) {
630 len = strcspn(var, "=");
632 printf("name cannot start with '=': '%s'\n", var);
636 strcpy(ldvar, "uboot.");
637 strncat(ldvar, var, sizeof(ldvar) - 7);
639 len = MIN(len, sizeof(ldvar) - 1);
640 strncpy(ldvar, var, len);
647 * If the user prepended "uboot." (which is how they usually see these
648 * names) strip it off as a convenience.
650 if (strncmp(var, "uboot.", 6) == 0) {
654 /* If there is no variable name left, punt. */
656 printf("empty variable name\n");
660 val = ub_env_get(var);
661 if (action == UBENV_SHOW) {
663 printf("uboot.%s is not set\n", var);
665 printf("uboot.%s=%s\n", var, val);
666 } else if (action == UBENV_IMPORT) {
668 setenv(ldvar, val, 1);
674 command_ubenv(int argc, char *argv[])
676 enum ubenv_action action;
680 action = UBENV_UNKNOWN;
682 if (strcasecmp(argv[1], "import") == 0)
683 action = UBENV_IMPORT;
684 else if (strcasecmp(argv[1], "show") == 0)
687 if (action == UBENV_UNKNOWN) {
688 command_errmsg = "usage: 'ubenv <import|show> [var ...]";
693 for (i = 2; i < argc; i++)
694 handle_uboot_env_var(action, argv[i]);
698 if ((var = ub_env_enum(var)) == NULL)
700 handle_uboot_env_var(action, var);
706 COMMAND_SET(ubenv, "ubenv", "show or import U-Boot env vars", command_ubenv);
708 #ifdef LOADER_FDT_SUPPORT
710 * Since proper fdt command handling function is defined in fdt_loader_cmd.c,
711 * and declaring it as extern is in contradiction with COMMAND_SET() macro
712 * (which uses static pointer), we're defining wrapper function, which
713 * calls the proper fdt handling routine.
716 command_fdt(int argc, char *argv[])
719 return (command_fdt_internal(argc, argv));
722 COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt);