2 * prom.c - Routines for talking to the Open Firmware PROM
4 * Copyright (C) 2001, 2002 Ethan Benson
6 * Copyright (C) 1999 Benjamin Herrenschmidt
8 * Copyright (C) 1999 Marius Vollmer
10 * Copyright (C) 1996 Paul Mackerras.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
33 #include "asm/processor.h"
37 #define READ_BLOCKS_USE_READ 1
41 ihandle prom_stdin, prom_stdout;
43 //extern int vsprintf(char *buf, const char *fmt, va_list args);
45 static ihandle prom_mem, prom_mmu;
46 static ihandle prom_chosen, prom_options;
56 call_prom (const char *service, int nargs, int nret, ...)
60 struct prom_args prom_args;
62 prom_args.service = service;
63 prom_args.nargs = nargs;
64 prom_args.nret = nret;
65 va_start (list, nret);
66 for (i = 0; i < nargs; ++i)
67 prom_args.args[i] = va_arg(list, void *);
69 for (i = 0; i < nret; ++i)
70 prom_args.args[i + nargs] = 0;
73 return prom_args.args[nargs];
79 call_prom_return (const char *service, int nargs, int nret, ...)
84 struct prom_args prom_args;
86 prom_args.service = service;
87 prom_args.nargs = nargs;
88 prom_args.nret = nret;
89 va_start (list, nret);
90 for (i = 0; i < nargs; ++i)
91 prom_args.args[i] = va_arg(list, void *);
92 for (i = 0; i < nret; ++i)
93 prom_args.args[i + nargs] = 0;
94 if (prom (&prom_args) != 0)
95 return PROM_INVALID_HANDLE;
97 result = prom_args.args[nargs];
98 for (i=1; i<nret; i++) {
99 void** rp = va_arg(list, void**);
100 *rp = prom_args.args[i+nargs];
109 call_method_1 (char *method, prom_handle h, int nargs, ...)
113 struct prom_args prom_args;
115 prom_args.service = "call-method";
116 prom_args.nargs = nargs+2;
118 prom_args.args[0] = method;
119 prom_args.args[1] = h;
120 va_start (list, nargs);
121 for (i = 0; i < nargs; ++i)
122 prom_args.args[2+i] = va_arg(list, void *);
124 prom_args.args[2+nargs] = 0;
125 prom_args.args[2+nargs+1] = 0;
129 if (prom_args.args[2+nargs] != 0)
131 prom_printf ("method '%s' failed %p\n", method, prom_args.args[2+nargs]);
134 return prom_args.args[2+nargs+1];
139 prom_finddevice (char *name)
141 return call_prom ("finddevice", 1, 1, name);
145 prom_findpackage(char *path)
147 return call_prom ("find-package", 1, 1, path);
151 prom_getprop (prom_handle pack, char *name, void *mem, int len)
153 return (int)call_prom ("getprop", 4, 1, pack, name, mem, len);
157 prom_getproplen(prom_handle pack, const char *name)
159 return (int)call_prom("getproplen", 2, 1, pack, name);
163 prom_setprop (prom_handle pack, char *name, void *mem, int len)
165 return (int)call_prom ("setprop", 4, 1, pack, name, mem, len);
169 prom_get_chosen (char *name, void *mem, int len)
171 return prom_getprop (prom_chosen, name, mem, len);
175 prom_get_options (char *name, void *mem, int len)
177 if (prom_options == (void *)-1)
179 return prom_getprop (prom_options, name, mem, len);
183 prom_set_options (char *name, void *mem, int len)
185 if (prom_options == (void *)-1)
187 return prom_setprop (prom_options, name, mem, len);
191 prom_get_devtype (char *device)
197 if (strstr(device, TOK_ISCSI))
198 device = strcpy(tmp, "/vdevice/gscsi/disk");
200 /* Find OF device phandle */
201 dev = prom_finddevice(device);
202 if (dev == PROM_INVALID_HANDLE) {
203 return FILE_ERR_BADDEV;
206 /* Check the kind of device */
207 result = prom_getprop(dev, "device_type", tmp, 63);
209 prom_printf("can't get <device_type> for device: %s\n", device);
210 return FILE_ERR_BADDEV;
213 if (!strcmp(tmp, "block"))
214 return FILE_DEVICE_BLOCK;
215 else if (!strcmp(tmp, "network"))
216 return FILE_DEVICE_NET;
218 prom_printf("Unkown device type <%s>\n", tmp);
219 return FILE_ERR_BADDEV;
224 prom_init (prom_entry pp)
228 prom_chosen = prom_finddevice ("/chosen");
229 if (prom_chosen == (void *)-1)
231 prom_options = prom_finddevice ("/options");
232 if (prom_get_chosen ("stdout", &prom_stdout, sizeof(prom_stdout)) <= 0)
234 if (prom_get_chosen ("stdin", &prom_stdin, sizeof(prom_stdin)) <= 0)
235 prom_abort ("\nCan't open stdin");
236 if (prom_get_chosen ("memory", &prom_mem, sizeof(prom_mem)) <= 0)
237 prom_abort ("\nCan't get mem handle");
238 if (prom_get_chosen ("mmu", &prom_mmu, sizeof(prom_mmu)) <= 0)
239 prom_abort ("\nCan't get mmu handle");
241 // move cursor to fresh line
244 /* Add a few OF methods (thanks Darwin) */
246 prom_printf ("Adding OF methods...\n");
250 /* All values in this forth code are in hex */
252 /* Those are a few utilities ripped from Apple */
253 ": D2NIP decode-int nip nip ;\r" // A useful function to save space
254 ": GPP$ get-package-property 0= ;\r" // Another useful function to save space
255 ": ^on0 0= if -1 throw then ;\r" // Bail if result zero
256 ": $CM $call-method ;\r"
259 /* Some forth words used by the release method */
261 " \" /chosen\" find-package if "
262 "dup \" memory\" rot GPP$ if "
263 "D2NIP swap " // ( MEMORY-ihandle "/chosen"-phandle )
264 "\" mmu\" rot GPP$ if "
265 "D2NIP " // ( MEMORY-ihandle MMU-ihandle )
267 "0 " // ( MEMORY-ihandle 0 )
284 DEBUG_F("OF interface initialized.\n");
288 prom_open (char *spec)
290 return call_prom ("open", 1, 1, spec, strlen(spec));
294 prom_close (prom_handle file)
296 call_prom ("close", 1, 0, file);
300 prom_read (prom_handle file, void *buf, int n)
308 result = (int)call_prom ("read", 3, 1, file, buf, n);
311 call_prom("interpret", 1, 1, " 10 ms");
318 prom_write (prom_handle file, void *buf, int n)
320 return (int)call_prom ("write", 3, 1, file, buf, n);
324 prom_seek (prom_handle file, int pos)
326 int status = (int)call_prom ("seek", 3, 1, file, 0, pos);
327 return status == 0 || status == 1;
331 prom_lseek (prom_handle file, unsigned long long pos)
333 int status = (int)call_prom ("seek", 3, 1, file,
334 (unsigned int)(pos >> 32), (unsigned int)(pos & 0xffffffffUL));
335 return status == 0 || status == 1;
339 prom_loadmethod (prom_handle device, void* addr)
341 return (int)call_method_1 ("load", device, 1, addr);
345 prom_getblksize (prom_handle file)
347 return (int)call_method_1 ("block-size", file, 0);
351 prom_readblocks (prom_handle dev, int blockNum, int blockCount, void *buffer)
353 #if READ_BLOCKS_USE_READ
355 unsigned int blksize;
357 blksize = prom_getblksize(dev);
360 status = prom_seek(dev, blockNum * blksize);
363 prom_printf("Can't seek to 0x%x\n", blockNum * blksize);
366 status = prom_read(dev, buffer, blockCount * blksize);
367 // prom_printf("prom_readblocks, bl: %d, cnt: %d, status: %d\n",
368 // blockNum, blockCount, status);
370 return status == (blockCount * blksize);
378 result = call_method_1 ("read-blocks", dev, 3, buffer, blockNum, blockCount);
381 call_prom("interpret", 1, 1, " 10 ms");
394 while ((a = (int)call_prom ("read", 3, 1, prom_stdin, c, 4)) == 0)
397 prom_abort ("EOF on console\n");
398 if (a == 3 && c[0] == '\e' && c[1] == '[')
408 return (int) call_prom("read", 3, 1, prom_stdin, &ch, 1) > 0? ch: -1;
412 prom_putchar (char c)
415 call_prom ("write", 3, 1, prom_stdout, "\r\n", 2);
417 call_prom ("write", 3, 1, prom_stdout, &c, 1);
421 prom_puts (prom_handle file, char *s)
425 for (p = s; *p != 0; p = q)
427 for (q = p; *q != 0 && *q != '\n'; ++q)
430 call_prom ("write", 3, 1, file, p, q - p);
434 call_prom ("write", 3, 1, file, "\r\n", 2);
440 prom_vfprintf (prom_handle file, char *fmt, va_list ap)
442 static char printf_buf[2048];
443 vsprintf (printf_buf, fmt, ap);
444 prom_puts (file, printf_buf);
448 prom_vprintf (char *fmt, va_list ap)
450 static char printf_buf[2048];
451 vsprintf (printf_buf, fmt, ap);
452 prom_puts (prom_stdout, printf_buf);
456 prom_fprintf (prom_handle file, char *fmt, ...)
460 prom_vfprintf (file, fmt, ap);
465 prom_printf (char *fmt, ...)
469 prom_vfprintf (prom_stdout, fmt, ap);
474 prom_perror (int error, char *filename)
476 if (error == FILE_ERR_EOF)
477 prom_printf("%s: Unexpected End Of File\n", filename);
478 else if (error == FILE_ERR_NOTFOUND)
479 prom_printf("%s: No such file or directory\n", filename);
480 else if (error == FILE_CANT_SEEK)
481 prom_printf("%s: Seek error\n", filename);
482 else if (error == FILE_IOERR)
483 prom_printf("%s: Input/output error\n", filename);
484 else if (error == FILE_BAD_PATH)
485 prom_printf("%s: Path too long\n", filename);
486 else if (error == FILE_ERR_BAD_TYPE)
487 prom_printf("%s: Not a regular file\n", filename);
488 else if (error == FILE_ERR_NOTDIR)
489 prom_printf("%s: Not a directory\n", filename);
490 else if (error == FILE_ERR_BAD_FSYS)
491 prom_printf("%s: Unknown or corrupt filesystem\n", filename);
492 else if (error == FILE_ERR_SYMLINK_LOOP)
493 prom_printf("%s: Too many levels of symbolic links\n", filename);
494 else if (error == FILE_ERR_LENGTH)
495 prom_printf("%s: File too large\n", filename);
496 else if (error == FILE_ERR_FSBUSY)
497 prom_printf("%s: Filesystem busy\n", filename);
498 else if (error == FILE_ERR_BADDEV)
499 prom_printf("%s: Unable to open file, Invalid device\n", filename);
501 prom_printf("%s: Unknown error\n", filename);
505 prom_readline (char *prompt, char *buf, int len)
511 prom_puts (prom_stdout, prompt);
513 while (i < len-1 && (c = prom_getchar ()) != '\r')
521 prom_puts (prom_stdout, "\b \b");
527 else if (isprint (c))
539 #ifdef CONFIG_SET_COLORMAP
540 int prom_set_color(prom_handle device, int color, int r, int g, int b)
542 return (int)call_prom( "call-method", 6, 1, "color!", device, color, b, g, r );
544 #endif /* CONFIG_SET_COLORMAP */
549 call_prom ("exit", 0, 0);
553 prom_abort (char *fmt, ...)
557 prom_vfprintf (prom_stdout, fmt, ap);
563 prom_sleep (int seconds)
566 end = (prom_getms() + (seconds * 1000));
567 while (prom_getms() <= end);
571 prom_claim (void *virt, unsigned int size, unsigned int align)
573 return call_prom ("claim", 3, 1, virt, size, align);
577 prom_release(void *virt, unsigned int size)
579 call_prom ("release", 2, 0, virt, size);
580 #if 0 /* this is bullshit, newworld OF RELEASE method works fine. */
582 /* release in not enough, it needs also an unmap call. This bit of forth
583 * code inspired from Darwin's bootloader but could be replaced by direct
584 * calls to the MMU package if needed
586 call_prom ("interpret", 3, 1,
588 ".\" ReleaseMem:\" 2dup . . cr "
590 "over \" translate\" ^mmu " // Find out physical base
591 "^on0 " // Bail if translation failed
592 "drop " // Leaving phys on top of stack
593 "2dup \" unmap\" ^mmu " // Unmap the space first
594 "2dup \" release\" ^mmu " // Then free the virtual pages
595 "\" release\" ^mem " // Then free the physical pages
598 #endif /* bullshit */
602 prom_map (void *phys, void *virt, int size)
604 unsigned long msr = mfmsr();
606 /* Only create a mapping if we're running with relocation enabled. */
607 if ( (msr & MSR_IR) && (msr & MSR_DR) )
608 call_method_1 ("map", prom_mmu, 4, -1, size, virt, phys);
612 prom_unmap (void *phys, void *virt, int size)
614 unsigned long msr = mfmsr();
616 /* Only unmap if we're running with relocation enabled. */
617 if ( (msr & MSR_IR) && (msr & MSR_DR) )
618 call_method_1 ("map", prom_mmu, 4, -1, size, virt, phys);
624 static char args[256];
627 l = prom_get_chosen ("bootargs", args, 255);
633 prom_setargs (char *args)
635 int l = strlen (args)+1;
636 if ((int)call_prom ("setprop", 4, 1, prom_chosen, "bootargs", args, l) != l)
637 prom_printf ("can't set args\n");
640 int prom_interpret (char *forth)
642 return (int)call_prom("interpret", 1, 1, forth);
648 return (int) call_prom("milliseconds", 0, 1);
654 call_prom("enter", 0, 0);
659 * returns the packet with all needed info for netboot
661 struct bootp_packet * prom_get_netinfo (void)
663 void *bootp_response = NULL;
665 struct bootp_packet *packet;
666 int i = 0, size, offset = 0;
668 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
670 chosen = prom_finddevice("/chosen");
672 DEBUG_F("chosen=%d\n", chosen);
676 for (i = 0; i < ARRAY_SIZE(bootp_response_properties); i++) {
677 propname = bootp_response_properties[i].name;
678 size = prom_getproplen(chosen, propname);
682 DEBUG_F("using /chosen/%s\n", propname);
683 offset = bootp_response_properties[i].offset;
690 if (sizeof(*packet) > size - offset) {
691 prom_printf("Malformed %s property?\n", propname);
695 bootp_response = malloc(size);
699 if (prom_getprop(chosen, propname, bootp_response, size) < 0)
702 packet = bootp_response + offset;
708 * returns the mac addr of an net card
710 char * prom_get_mac (struct bootp_packet * packet)
718 /* 3 chars per byte in chaddr + \0 */
719 conf_path = malloc(packet->hlen * 3 + 1);
722 sprintf(conf_path, "%02x", packet->chaddr[0]);
724 for (i = 1; i < packet->hlen; i++) {
726 sprintf(tmp, "-%02x", packet->chaddr[i]);
727 strcat(conf_path, tmp);
735 * returns the ip addr of an net card
737 char * prom_get_ip (struct bootp_packet * packet)
744 /* 8 chars in yiaddr + \0 */
745 conf_path = malloc(9);
748 sprintf(conf_path, "%08x", packet->yiaddr);
755 * c-file-style: "k&r"