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 (1 * 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);
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 * Valid device strings: For device types:
187 * <type_name> DEV_TYP_STOR, DEV_TYP_NET
188 * <type_name><unit> DEV_TYP_STOR, DEV_TYP_NET
189 * <type_name><unit>: DEV_TYP_STOR, DEV_TYP_NET
190 * <type_name><unit>:<slice> DEV_TYP_STOR
191 * <type_name><unit>:<slice>. DEV_TYP_STOR
192 * <type_name><unit>:<slice>.<partition> DEV_TYP_STOR
194 * For valid type names, see the device_types array, above.
196 * Slice numbers are 1-based. 0 is a wildcard.
199 get_load_device(int *type, int *unit, int *slice, int *partition)
210 devstr = ub_env_get("loaderdev");
211 if (devstr == NULL) {
212 printf("U-Boot env: loaderdev not set, will probe all devices.\n");
215 printf("U-Boot env: loaderdev='%s'\n", devstr);
217 p = get_device_type(devstr, type);
219 /* Ignore optional spaces after the device name. */
223 /* Unknown device name, or a known name without unit number. */
224 if ((*type == -1) || (*p == '\0')) {
228 /* Malformed unit number. */
234 /* Guaranteed to extract a number from the string, as *p is a digit. */
235 *unit = strtol(p, &endp, 10);
238 /* Known device name with unit number and nothing else. */
243 /* Device string is malformed beyond unit number. */
252 /* No slice and partition specification. */
256 /* Only DEV_TYP_STOR devices can have a slice specification. */
257 if (!(*type & DEV_TYP_STOR)) {
263 *slice = strtoul(p, &endp, 10);
265 /* Malformed slice number. */
275 /* No partition specification. */
279 /* Device string is malformed beyond slice number. */
289 /* No partition specification. */
293 *partition = strtol(p, &endp, 10);
296 /* Full, valid device string. */
300 /* Junk beyond partition number. */
308 print_disk_probe_info()
313 if (currdev.d_disk.slice > 0)
314 sprintf(slice, "%d", currdev.d_disk.slice);
316 strcpy(slice, "<auto>");
318 if (currdev.d_disk.partition >= 0)
319 sprintf(partition, "%d", currdev.d_disk.partition);
321 strcpy(partition, "<auto>");
323 printf(" Checking unit=%d slice=%s partition=%s...",
324 currdev.dd.d_unit, slice, partition);
329 probe_disks(int devidx, int load_type, int load_unit, int load_slice,
332 int open_result, unit;
335 currdev.d_disk.slice = load_slice;
336 currdev.d_disk.partition = load_partition;
338 f.f_devdata = &currdev;
341 if (load_type == -1) {
342 printf(" Probing all disk devices...\n");
343 /* Try each disk in succession until one works. */
344 for (currdev.dd.d_unit = 0; currdev.dd.d_unit < UB_MAX_DEV;
345 currdev.dd.d_unit++) {
346 print_disk_probe_info();
347 open_result = devsw[devidx]->dv_open(&f, &currdev);
348 if (open_result == 0) {
357 if (load_unit == -1) {
358 printf(" Probing all %s devices...\n", device_typename(load_type));
359 /* Try each disk of given type in succession until one works. */
360 for (unit = 0; unit < UB_MAX_DEV; unit++) {
361 currdev.dd.d_unit = uboot_diskgetunit(load_type, unit);
362 if (currdev.dd.d_unit == -1)
364 print_disk_probe_info();
365 open_result = devsw[devidx]->dv_open(&f, &currdev);
366 if (open_result == 0) {
375 if ((currdev.dd.d_unit = uboot_diskgetunit(load_type, load_unit)) != -1) {
376 print_disk_probe_info();
377 open_result = devsw[devidx]->dv_open(&f,&currdev);
378 if (open_result == 0) {
385 printf(" Requested disk type/unit/slice/partition not found\n");
390 main(int argc, char **argv)
392 struct api_signature *sig = NULL;
393 int load_type, load_unit, load_slice, load_partition;
398 * We first check if a command line argument was passed to us containing
399 * API's signature address. If it wasn't then we try to search for the
400 * API signature via the usual hinted address.
401 * If we can't find the magic signature and related info, exit with a
402 * unique error code that U-Boot reports as "## Application terminated,
403 * rc = 0xnnbadab1". Hopefully 'badab1' looks enough like "bad api" to
404 * provide a clue. It's better than 0xffffffff anyway.
406 if (!api_parse_cmdline_sig(argc, argv, &sig) && !api_search_sig(&sig))
409 syscall_ptr = sig->syscall;
410 if (syscall_ptr == NULL)
413 if (sig->version > API_SIG_VERSION)
416 /* Clear BSS sections */
417 bzero(__sbss_start, __sbss_end - __sbss_start);
418 bzero(__bss_start, _end - __bss_start);
421 * Initialise the heap as early as possible. Once this is done,
422 * alloc() is usable. We are using the stack u-boot set up near the top
423 * of physical ram; hopefully there is sufficient space between the end
424 * of our bss and the bottom of the u-boot stack to avoid overlap.
426 uboot_heap_start = round_page((uintptr_t)end);
427 uboot_heap_end = uboot_heap_start + HEAP_SIZE;
428 setheap((void *)uboot_heap_start, (void *)uboot_heap_end);
434 printf("Compatible U-Boot API signature found @%p\n", sig);
436 printf("\n%s", bootprog_info);
445 * Enumerate U-Boot devices
447 if ((devs_no = ub_dev_enum()) == 0) {
448 printf("no U-Boot devices found");
451 printf("Number of U-Boot devices: %d\n", devs_no);
453 get_load_device(&load_type, &load_unit, &load_slice, &load_partition);
456 * March through the device switch probing for things.
458 for (i = 0; devsw[i] != NULL; i++) {
460 if (devsw[i]->dv_init == NULL)
462 if ((devsw[i]->dv_init)() != 0)
465 printf("Found U-Boot device: %s\n", devsw[i]->dv_name);
467 currdev.dd.d_dev = devsw[i];
468 currdev.dd.d_unit = 0;
470 if ((load_type == -1 || (load_type & DEV_TYP_STOR)) &&
471 strcmp(devsw[i]->dv_name, "disk") == 0) {
472 if (probe_disks(i, load_type, load_unit, load_slice,
473 load_partition) == 0)
477 if ((load_type == -1 || (load_type & DEV_TYP_NET)) &&
478 strcmp(devsw[i]->dv_name, "net") == 0)
483 * If we couldn't find a boot device, return an error to u-boot.
484 * U-boot may be running a boot script that can try something different
485 * so returning an error is better than forcing a reboot.
487 if (devsw[i] == NULL) {
488 printf("No boot device found!\n");
492 ldev = uboot_fmtdev(&currdev);
493 env_setenv("currdev", EV_VOLATILE, ldev, uboot_setcurrdev, env_nounset);
494 env_setenv("loaddev", EV_VOLATILE, ldev, env_noset, env_nounset);
495 printf("Booting from %s\n", ldev);
498 setenv("LINES", "24", 1); /* optional */
499 setenv("prompt", "loader>", 1);
501 archsw.arch_loadaddr = uboot_loadaddr;
502 archsw.arch_getdev = uboot_getdev;
503 archsw.arch_copyin = uboot_copyin;
504 archsw.arch_copyout = uboot_copyout;
505 archsw.arch_readin = uboot_readin;
506 archsw.arch_autoload = uboot_autoload;
508 interact(); /* doesn't return */
514 COMMAND_SET(heap, "heap", "show heap usage", command_heap);
516 command_heap(int argc, char *argv[])
519 printf("heap base at %p, top at %p, used %td\n", end, sbrk(0),
525 COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
527 command_reboot(int argc, char *argv[])
530 printf("Resetting...\n");
533 printf("Reset failed!\n");
538 COMMAND_SET(devinfo, "devinfo", "show U-Boot devices", command_devinfo);
540 command_devinfo(int argc, char *argv[])
544 if ((devs_no = ub_dev_enum()) == 0) {
545 command_errmsg = "no U-Boot devices found!?";
549 printf("U-Boot devices:\n");
550 for (i = 0; i < devs_no; i++) {
557 COMMAND_SET(sysinfo, "sysinfo", "show U-Boot system info", command_sysinfo);
559 command_sysinfo(int argc, char *argv[])
563 if ((si = ub_get_sys_info()) == NULL) {
564 command_errmsg = "could not retrieve U-Boot sys info!?";
568 printf("U-Boot system info:\n");
580 handle_uboot_env_var(enum ubenv_action action, const char * var)
588 * On an import with the variable name formatted as ldname=ubname,
589 * import the uboot variable ubname into the loader variable ldname,
590 * otherwise the historical behavior is to import to uboot.ubname.
592 if (action == UBENV_IMPORT) {
593 len = strcspn(var, "=");
595 printf("name cannot start with '=': '%s'\n", var);
599 strcpy(ldvar, "uboot.");
600 strncat(ldvar, var, sizeof(ldvar) - 7);
602 len = MIN(len, sizeof(ldvar) - 1);
603 strncpy(ldvar, var, len);
610 * If the user prepended "uboot." (which is how they usually see these
611 * names) strip it off as a convenience.
613 if (strncmp(var, "uboot.", 6) == 0) {
617 /* If there is no variable name left, punt. */
619 printf("empty variable name\n");
623 val = ub_env_get(var);
624 if (action == UBENV_SHOW) {
626 printf("uboot.%s is not set\n", var);
628 printf("uboot.%s=%s\n", var, val);
629 } else if (action == UBENV_IMPORT) {
631 setenv(ldvar, val, 1);
637 command_ubenv(int argc, char *argv[])
639 enum ubenv_action action;
643 action = UBENV_UNKNOWN;
645 if (strcasecmp(argv[1], "import") == 0)
646 action = UBENV_IMPORT;
647 else if (strcasecmp(argv[1], "show") == 0)
650 if (action == UBENV_UNKNOWN) {
651 command_errmsg = "usage: 'ubenv <import|show> [var ...]";
656 for (i = 2; i < argc; i++)
657 handle_uboot_env_var(action, argv[i]);
661 if ((var = ub_env_enum(var)) == NULL)
663 handle_uboot_env_var(action, var);
669 COMMAND_SET(ubenv, "ubenv", "show or import U-Boot env vars", command_ubenv);
671 #ifdef LOADER_FDT_SUPPORT
673 * Since proper fdt command handling function is defined in fdt_loader_cmd.c,
674 * and declaring it as extern is in contradiction with COMMAND_SET() macro
675 * (which uses static pointer), we're defining wrapper function, which
676 * calls the proper fdt handling routine.
679 command_fdt(int argc, char *argv[])
682 return (command_fdt_internal(argc, argv));
685 COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt);