2 * (C) Copyright 2000-2006
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
36 #include <environment.h>
37 #include <asm/byteorder.h>
39 #if defined(CONFIG_OF_LIBFDT)
42 #include <fdt_support.h>
43 #elif defined(CONFIG_OF_FLAT_TREE)
47 #if defined(CONFIG_TIMESTAMP) || defined(CONFIG_CMD_DATE)
51 #ifdef CFG_HUSH_PARSER
55 #ifdef CONFIG_HAS_DATAFLASH
56 #include <dataflash.h>
59 DECLARE_GLOBAL_DATA_PTR;
61 extern int gunzip (void *dst, int dstlen, unsigned char *src, unsigned long *lenp);
63 #define CFG_BOOTM_LEN 0x800000 /* use 8MByte as default max gunzip size */
67 extern void bz_internal_error(int);
70 #if defined(CONFIG_CMD_IMI)
71 static int image_info (unsigned long addr);
74 #if defined(CONFIG_CMD_IMLS)
76 extern flash_info_t flash_info[]; /* info for FLASH chips */
77 static int do_imls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
80 #ifdef CONFIG_SILENT_CONSOLE
81 static void fixup_silent_linux (void);
84 static void print_type (image_header_t *hdr);
85 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
88 * Continue booting an OS image; caller already has:
89 * - copied image header to global variable `header'
90 * - checked header magic number, checksums (both header & image),
91 * - verified image architecture (PPC) and type (KERNEL or MULTI),
92 * - loaded (first part of) image to header load address,
93 * - disabled interrupts.
95 typedef void boot_os_fn (cmd_tbl_t *cmdtp, int flag,
96 int argc, char *argv[],
97 image_header_t *hdr, /* of image to boot */
98 int verify); /* getenv("verify")[0] != 'n' */
100 extern boot_os_fn do_bootm_linux;
101 static boot_os_fn do_bootm_netbsd;
102 #if defined(CONFIG_LYNXKDI)
103 static boot_os_fn do_bootm_lynxkdi;
104 extern void lynxkdi_boot (image_header_t *);
106 static boot_os_fn do_bootm_rtems;
107 #if defined(CONFIG_CMD_ELF)
108 static boot_os_fn do_bootm_vxworks;
109 static boot_os_fn do_bootm_qnxelf;
110 int do_bootvx (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
111 int do_bootelf (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
113 #if defined(CONFIG_ARTOS) && defined(CONFIG_PPC)
114 extern uchar (*env_get_char)(int); /* Returns a character from the environment */
115 static boot_os_fn do_bootm_artos;
118 ulong load_addr = CFG_LOAD_ADDR; /* Default Load Address */
121 /*******************************************************************/
122 /* bootm - boot application image from image in memory */
123 /*******************************************************************/
124 int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
128 int (*appl)(int, char *[]);
129 uint unc_len = CFG_BOOTM_LEN;
130 int verify = getenv_verify();
134 ulong os_data, os_len;
136 ulong image_start, image_end;
137 ulong load_start, load_end;
141 img_addr = load_addr;
143 img_addr = simple_strtoul(argv[1], NULL, 16);
146 show_boot_progress (1);
147 printf ("## Booting image at %08lx ...\n", img_addr);
149 #ifdef CONFIG_HAS_DATAFLASH
150 if (addr_dataflash (img_addr)){
151 hdr = (image_header_t *)CFG_LOAD_ADDR;
152 read_dataflash (img_addr, image_get_header_size (), (char *)hdr);
155 hdr = (image_header_t *)img_addr;
157 if (!image_check_magic(hdr)) {
158 puts ("Bad Magic Number\n");
159 show_boot_progress (-1);
162 show_boot_progress (2);
164 if (!image_check_hcrc (hdr)) {
165 puts ("Bad Header Checksum\n");
166 show_boot_progress (-2);
169 show_boot_progress (3);
171 #ifdef CONFIG_HAS_DATAFLASH
172 if (addr_dataflash (img_addr))
173 read_dataflash (img_addr + image_get_header_size (),
174 image_get_data_size (hdr),
175 (char *)image_get_data (hdr));
178 /* uImage is in a system RAM, pointed to by hdr */
179 print_image_hdr (hdr);
182 puts (" Verifying Checksum ... ");
183 if (!image_check_dcrc (hdr)) {
184 printf ("Bad Data CRC\n");
185 show_boot_progress (-3);
190 show_boot_progress (4);
192 if (!image_check_target_arch (hdr)) {
193 printf ("Unsupported Architecture 0x%x\n", image_get_arch (hdr));
194 show_boot_progress (-4);
197 show_boot_progress (5);
199 switch (image_get_type (hdr)) {
200 case IH_TYPE_STANDALONE:
201 name = "Standalone Application";
202 /* A second argument overwrites the load address */
204 image_set_load (hdr, simple_strtoul (argv[2], NULL, 16));
208 name = "Kernel Image";
209 os_data = image_get_data (hdr);
210 os_len = image_get_data_size (hdr);
213 name = "Multi-File Image";
214 image_multi_getimg (hdr, 0, &os_data, &os_len);
217 printf ("Wrong Image Type for %s command\n", cmdtp->name);
218 show_boot_progress (-5);
221 show_boot_progress (6);
224 * We have reached the point of no return: we are going to
225 * overwrite all exception vector code, so we cannot easily
226 * recover from any failures any more...
228 iflag = disable_interrupts();
230 #ifdef CONFIG_AMIGAONEG3SE
232 * We've possible left the caches enabled during
233 * bios emulation, so turn them off again
236 invalidate_l1_instruction_cache();
241 image_start = (ulong)hdr;
242 image_end = image_get_image_end (hdr);
243 load_start = image_get_load (hdr);
246 switch (image_get_comp (hdr)) {
248 if (image_get_load (hdr) == img_addr) {
249 printf (" XIP %s ... ", name);
251 printf (" Loading %s ... ", name);
253 memmove_wd ((void *)image_get_load (hdr),
254 (void *)os_data, os_len, CHUNKSZ);
256 load_end = load_start + os_len;
261 printf (" Uncompressing %s ... ", name);
262 if (gunzip ((void *)image_get_load (hdr), unc_len,
263 (uchar *)os_data, &os_len) != 0) {
264 puts ("GUNZIP ERROR - must RESET board to recover\n");
265 show_boot_progress (-6);
266 do_reset (cmdtp, flag, argc, argv);
269 load_end = load_start + os_len;
273 printf (" Uncompressing %s ... ", name);
275 * If we've got less than 4 MB of malloc() space,
276 * use slower decompression algorithm which requires
277 * at most 2300 KB of memory.
279 int i = BZ2_bzBuffToBuffDecompress ((char*)image_get_load (hdr),
280 &unc_len, (char *)os_data, os_len,
281 CFG_MALLOC_LEN < (4096 * 1024), 0);
283 printf ("BUNZIP2 ERROR %d - must RESET board to recover\n", i);
284 show_boot_progress (-6);
285 do_reset (cmdtp, flag, argc, argv);
288 load_end = load_start + unc_len;
290 #endif /* CONFIG_BZIP2 */
294 printf ("Unimplemented compression type %d\n", image_get_comp (hdr));
295 show_boot_progress (-7);
299 show_boot_progress (7);
301 if ((load_start < image_end) && (load_end > image_start)) {
302 debug ("image_start = 0x%lX, image_end = 0x%lx\n", image_start, image_end);
303 debug ("load_start = 0x%lx, load_end = 0x%lx\n", load_start, load_end);
305 puts ("ERROR: image overwritten - must RESET the board to recover.\n");
306 do_reset (cmdtp, flag, argc, argv);
309 switch (image_get_type (hdr)) {
310 case IH_TYPE_STANDALONE:
314 /* load (and uncompress), but don't start if "autostart"
317 if (((s = getenv("autostart")) != NULL) && (strcmp(s,"no") == 0)) {
319 sprintf(buf, "%lX", image_get_data_size(hdr));
320 setenv("filesize", buf);
323 appl = (int (*)(int, char *[]))image_get_ep (hdr);
324 (*appl)(argc-1, &argv[1]);
333 printf ("Can't boot image type %d\n", image_get_type (hdr));
334 show_boot_progress (-8);
337 show_boot_progress (8);
339 switch (image_get_os (hdr)) {
340 default: /* handled by (original) Linux case */
342 #ifdef CONFIG_SILENT_CONSOLE
343 fixup_silent_linux();
345 do_bootm_linux (cmdtp, flag, argc, argv, hdr, verify);
349 do_bootm_netbsd (cmdtp, flag, argc, argv, hdr, verify);
352 #ifdef CONFIG_LYNXKDI
354 do_bootm_lynxkdi (cmdtp, flag, argc, argv, hdr, verify);
359 do_bootm_rtems (cmdtp, flag, argc, argv, hdr, verify);
362 #if defined(CONFIG_CMD_ELF)
364 do_bootm_vxworks (cmdtp, flag, argc, argv, hdr, verify);
368 do_bootm_qnxelf (cmdtp, flag, argc, argv, hdr, verify);
374 do_bootm_artos (cmdtp, flag, argc, argv, hdr, verify);
379 show_boot_progress (-9);
381 puts ("\n## Control returned to monitor - resetting...\n");
382 do_reset (cmdtp, flag, argc, argv);
388 bootm, CFG_MAXARGS, 1, do_bootm,
389 "bootm - boot application image from memory\n",
390 "[addr [arg ...]]\n - boot application image stored in memory\n"
391 "\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
392 "\t'arg' can be the address of an initrd image\n"
393 #if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
394 "\tWhen booting a Linux kernel which requires a flat device-tree\n"
395 "\ta third argument is required which is the address of the\n"
396 "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
397 "\tuse a '-' for the second argument. If you do not pass a third\n"
398 "\ta bd_info struct will be passed instead\n"
402 /*******************************************************************/
403 /* bootd - boot default image */
404 /*******************************************************************/
405 #if defined(CONFIG_CMD_BOOTD)
406 int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
410 #ifndef CFG_HUSH_PARSER
411 if (run_command (getenv ("bootcmd"), flag) < 0)
414 if (parse_string_outer (getenv ("bootcmd"),
415 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
422 boot, 1, 1, do_bootd,
423 "boot - boot default, i.e., run 'bootcmd'\n",
427 /* keep old command name "bootd" for backward compatibility */
429 bootd, 1, 1, do_bootd,
430 "bootd - boot default, i.e., run 'bootcmd'\n",
437 /*******************************************************************/
438 /* iminfo - print header info for a requested image */
439 /*******************************************************************/
440 #if defined(CONFIG_CMD_IMI)
441 int do_iminfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
448 return image_info (load_addr);
451 for (arg = 1; arg < argc; ++arg) {
452 addr = simple_strtoul (argv[arg], NULL, 16);
453 if (image_info (addr) != 0)
459 static int image_info (ulong addr)
461 image_header_t *hdr = (image_header_t *)addr;
463 printf ("\n## Checking Image at %08lx ...\n", addr);
465 if (!image_check_magic (hdr)) {
466 puts (" Bad Magic Number\n");
470 if (!image_check_hcrc (hdr)) {
471 puts (" Bad Header Checksum\n");
475 print_image_hdr (hdr);
477 puts (" Verifying Checksum ... ");
478 if (!image_check_dcrc (hdr)) {
479 puts (" Bad Data CRC\n");
487 iminfo, CFG_MAXARGS, 1, do_iminfo,
488 "iminfo - print header information for application image\n",
490 " - print header information for application image starting at\n"
491 " address 'addr' in memory; this includes verification of the\n"
492 " image contents (magic number, header and payload checksums)\n"
497 /*******************************************************************/
498 /* imls - list all images found in flash */
499 /*******************************************************************/
500 #if defined(CONFIG_CMD_IMLS)
501 int do_imls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
507 for (i = 0, info = &flash_info[0];
508 i < CFG_MAX_FLASH_BANKS; ++i, ++info) {
510 if (info->flash_id == FLASH_UNKNOWN)
512 for (j = 0; j < info->sector_count; ++j) {
514 hdr = (image_header_t *)info->start[j];
516 if (!hdr || !image_check_magic (hdr))
519 if (!image_check_hcrc (hdr))
522 printf ("Image at %08lX:\n", (ulong)hdr);
523 print_image_hdr (hdr);
525 puts (" Verifying Checksum ... ");
526 if (!image_check_dcrc (hdr)) {
527 puts ("Bad Data CRC\n");
541 "imls - list all images found in flash\n",
543 " - Prints information about all images found at sector\n"
544 " boundaries in flash.\n"
548 /*******************************************************************/
550 /*******************************************************************/
551 void print_image_hdr (image_header_t *hdr)
553 #if defined(CONFIG_TIMESTAMP) || defined(CONFIG_CMD_DATE)
554 time_t timestamp = (time_t)image_get_time (hdr);
558 printf (" Image Name: %.*s\n", IH_NMLEN, image_get_name (hdr));
560 #if defined(CONFIG_TIMESTAMP) || defined(CONFIG_CMD_DATE)
561 to_tm (timestamp, &tm);
562 printf (" Created: %4d-%02d-%02d %2d:%02d:%02d UTC\n",
563 tm.tm_year, tm.tm_mon, tm.tm_mday,
564 tm.tm_hour, tm.tm_min, tm.tm_sec);
566 puts (" Image Type: ");
569 printf ("\n Data Size: %d Bytes = ", image_get_data_size (hdr));
570 print_size (image_get_data_size (hdr), "\n");
571 printf (" Load Address: %08x\n"
572 " Entry Point: %08x\n",
573 image_get_load (hdr), image_get_ep (hdr));
575 if (image_check_type (hdr, IH_TYPE_MULTI)) {
578 ulong count = image_multi_count (hdr);
580 puts (" Contents:\n");
581 for (i = 0; i < count; i++) {
582 image_multi_getimg (hdr, i, &data, &len);
583 printf (" Image %d: %8ld Bytes = ", i, len);
584 print_size (len, "\n");
589 static void print_type (image_header_t *hdr)
591 char *os, *arch, *type, *comp;
593 switch (image_get_os (hdr)) {
594 case IH_OS_INVALID: os = "Invalid OS"; break;
595 case IH_OS_NETBSD: os = "NetBSD"; break;
596 case IH_OS_LINUX: os = "Linux"; break;
597 case IH_OS_VXWORKS: os = "VxWorks"; break;
598 case IH_OS_QNX: os = "QNX"; break;
599 case IH_OS_U_BOOT: os = "U-Boot"; break;
600 case IH_OS_RTEMS: os = "RTEMS"; break;
602 case IH_OS_ARTOS: os = "ARTOS"; break;
604 #ifdef CONFIG_LYNXKDI
605 case IH_OS_LYNXOS: os = "LynxOS"; break;
607 default: os = "Unknown OS"; break;
610 switch (image_get_arch (hdr)) {
611 case IH_ARCH_INVALID: arch = "Invalid CPU"; break;
612 case IH_ARCH_ALPHA: arch = "Alpha"; break;
613 case IH_ARCH_ARM: arch = "ARM"; break;
614 case IH_ARCH_AVR32: arch = "AVR32"; break;
615 case IH_ARCH_BLACKFIN: arch = "Blackfin"; break;
616 case IH_ARCH_I386: arch = "Intel x86"; break;
617 case IH_ARCH_IA64: arch = "IA64"; break;
618 case IH_ARCH_M68K: arch = "M68K"; break;
619 case IH_ARCH_MICROBLAZE:arch = "Microblaze"; break;
620 case IH_ARCH_MIPS64: arch = "MIPS 64 Bit"; break;
621 case IH_ARCH_MIPS: arch = "MIPS"; break;
622 case IH_ARCH_NIOS2: arch = "Nios-II"; break;
623 case IH_ARCH_NIOS: arch = "Nios"; break;
624 case IH_ARCH_PPC: arch = "PowerPC"; break;
625 case IH_ARCH_S390: arch = "IBM S390"; break;
626 case IH_ARCH_SH: arch = "SuperH"; break;
627 case IH_ARCH_SPARC64: arch = "SPARC 64 Bit"; break;
628 case IH_ARCH_SPARC: arch = "SPARC"; break;
629 default: arch = "Unknown Architecture"; break;
632 switch (image_get_type (hdr)) {
633 case IH_TYPE_INVALID: type = "Invalid Image"; break;
634 case IH_TYPE_STANDALONE:type = "Standalone Program"; break;
635 case IH_TYPE_KERNEL: type = "Kernel Image"; break;
636 case IH_TYPE_RAMDISK: type = "RAMDisk Image"; break;
637 case IH_TYPE_MULTI: type = "Multi-File Image"; break;
638 case IH_TYPE_FIRMWARE: type = "Firmware"; break;
639 case IH_TYPE_SCRIPT: type = "Script"; break;
640 case IH_TYPE_FLATDT: type = "Flat Device Tree"; break;
641 default: type = "Unknown Image"; break;
644 switch (image_get_comp (hdr)) {
645 case IH_COMP_NONE: comp = "uncompressed"; break;
646 case IH_COMP_GZIP: comp = "gzip compressed"; break;
647 case IH_COMP_BZIP2: comp = "bzip2 compressed"; break;
648 default: comp = "unknown compression"; break;
651 printf ("%s %s %s (%s)", arch, os, type, comp);
654 #ifdef CONFIG_SILENT_CONSOLE
655 static void fixup_silent_linux ()
657 char buf[256], *start, *end;
658 char *cmdline = getenv ("bootargs");
660 /* Only fix cmdline when requested */
661 if (!(gd->flags & GD_FLG_SILENT))
664 debug ("before silent fix-up: %s\n", cmdline);
666 if ((start = strstr (cmdline, "console=")) != NULL) {
667 end = strchr (start, ' ');
668 strncpy (buf, cmdline, (start - cmdline + 8));
670 strcpy (buf + (start - cmdline + 8), end);
672 buf[start - cmdline + 8] = '\0';
674 strcpy (buf, cmdline);
675 strcat (buf, " console=");
678 strcpy (buf, "console=");
681 setenv ("bootargs", buf);
682 debug ("after silent fix-up: %s\n", buf);
684 #endif /* CONFIG_SILENT_CONSOLE */
687 /*******************************************************************/
688 /* OS booting routines */
689 /*******************************************************************/
691 static void do_bootm_netbsd (cmd_tbl_t *cmdtp, int flag,
692 int argc, char *argv[],
693 image_header_t *hdr, int verify)
695 void (*loader)(bd_t *, image_header_t *, char *, char *);
696 image_header_t *img_addr;
697 ulong kernel_data, kernel_len;
702 * Booting a (NetBSD) kernel image
704 * This process is pretty similar to a standalone application:
705 * The (first part of an multi-) image must be a stage-2 loader,
706 * which in turn is responsible for loading & invoking the actual
707 * kernel. The only differences are the parameters being passed:
708 * besides the board info strucure, the loader expects a command
709 * line, the name of the console device, and (optionally) the
710 * address of the original image header.
714 if (image_check_type (hdr, IH_TYPE_MULTI)) {
715 image_multi_getimg (hdr, 1, &kernel_data, &kernel_len);
721 #if defined (CONFIG_8xx_CONS_SMC1)
723 #elif defined (CONFIG_8xx_CONS_SMC2)
725 #elif defined (CONFIG_8xx_CONS_SCC2)
727 #elif defined (CONFIG_8xx_CONS_SCC3)
735 for (i = 2, len = 0; i < argc; i += 1)
736 len += strlen (argv[i]) + 1;
737 cmdline = malloc (len);
739 for (i = 2, len = 0; i < argc; i += 1) {
741 cmdline[len++] = ' ';
742 strcpy (&cmdline[len], argv[i]);
743 len += strlen (argv[i]);
745 } else if ((cmdline = getenv ("bootargs")) == NULL) {
749 loader = (void (*)(bd_t *, image_header_t *, char *, char *))image_get_ep (hdr);
751 printf ("## Transferring control to NetBSD stage-2 loader (at address %08lx) ...\n",
754 show_boot_progress (15);
757 * NetBSD Stage-2 Loader Parameters:
758 * r3: ptr to board info data
761 * r6: boot args string
763 (*loader) (gd->bd, img_addr, consdev, cmdline);
766 #ifdef CONFIG_LYNXKDI
767 static void do_bootm_lynxkdi (cmd_tbl_t *cmdtp, int flag,
768 int argc, char *argv[],
769 image_header_t *hdr, int verify)
773 #endif /* CONFIG_LYNXKDI */
775 static void do_bootm_rtems (cmd_tbl_t *cmdtp, int flag,
776 int argc, char *argv[],
777 image_header_t *hdr, int verify)
779 void (*entry_point)(bd_t *);
781 entry_point = (void (*)(bd_t *))image_get_ep (hdr);
783 printf ("## Transferring control to RTEMS (at address %08lx) ...\n",
786 show_boot_progress (15);
790 * r3: ptr to board info data
792 (*entry_point)(gd->bd);
795 #if defined(CONFIG_CMD_ELF)
796 static void do_bootm_vxworks (cmd_tbl_t *cmdtp, int flag,
797 int argc, char *argv[],
798 image_header_t *hdr, int verify)
802 sprintf(str, "%x", image_get_ep (hdr)); /* write entry-point into string */
803 setenv("loadaddr", str);
804 do_bootvx(cmdtp, 0, 0, NULL);
807 static void do_bootm_qnxelf(cmd_tbl_t *cmdtp, int flag,
808 int argc, char *argv[],
809 image_header_t *hdr, int verify)
814 sprintf(str, "%x", image_get_ep (hdr)); /* write entry-point into string */
815 local_args[0] = argv[0];
816 local_args[1] = str; /* and provide it via the arguments */
817 do_bootelf(cmdtp, 0, 2, local_args);
821 #if defined(CONFIG_ARTOS) && defined(CONFIG_PPC)
822 static void do_bootm_artos (cmd_tbl_t *cmdtp, int flag,
823 int argc, char *argv[],
824 image_header_t *hdr, int verify)
829 int i, j, nxt, len, envno, envsz;
831 void (*entry)(bd_t *bd, char *cmdline, char **fwenv, ulong top);
834 * Booting an ARTOS kernel image + application
837 /* this used to be the top of memory, but was wrong... */
839 /* get stack pointer */
840 asm volatile ("mr %0,1" : "=r"(top) );
842 debug ("## Current stack ends at 0x%08lX ", top);
844 top -= 2048; /* just to be sure */
845 if (top > CFG_BOOTMAPSZ)
849 debug ("=> set upper limit to 0x%08lX\n", top);
851 /* first check the artos specific boot args, then the linux args*/
852 if ((s = getenv( "abootargs")) == NULL && (s = getenv ("bootargs")) == NULL)
855 /* get length of cmdline, and place it */
857 top = (top - (len + 1)) & ~0xF;
858 cmdline = (char *)top;
859 debug ("## cmdline at 0x%08lX ", top);
863 top = (top - sizeof (bd_t)) & ~0xF;
864 debug ("## bd at 0x%08lX ", top);
866 memcpy (kbd, gd->bd, sizeof (bd_t));
868 /* first find number of env entries, and their size */
871 for (i = 0; env_get_char (i) != '\0'; i = nxt + 1) {
872 for (nxt = i; env_get_char (nxt) != '\0'; ++nxt)
875 envsz += (nxt - i) + 1; /* plus trailing zero */
877 envno++; /* plus the terminating zero */
878 debug ("## %u envvars total size %u ", envno, envsz);
880 top = (top - sizeof (char **) * envno) & ~0xF;
881 fwenv = (char **)top;
882 debug ("## fwenv at 0x%08lX ", top);
884 top = (top - envsz) & ~0xF;
889 for (i = 0; env_get_char (i) != '\0'; i = nxt + 1) {
890 for (nxt = i; env_get_char (nxt) != '\0'; ++nxt)
893 for (j = i; j < nxt; ++j)
894 *s++ = env_get_char (j);
897 *ss++ = NULL; /* terminate */
899 entry = (void (*)(bd_t *, char *, char **, ulong))image_get_ep (hdr);
900 (*entry) (kbd, cmdline, fwenv, top);