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Diffstat (limited to 'sys/arch/macppc/stand/main.c')
| -rw-r--r-- | sys/arch/macppc/stand/main.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/sys/arch/macppc/stand/main.c b/sys/arch/macppc/stand/main.c new file mode 100644 index 00000000000..71bc0df57d7 --- /dev/null +++ b/sys/arch/macppc/stand/main.c @@ -0,0 +1,288 @@ +/* $OpenBSD: main.c,v 1.1 2007/06/13 02:17:32 drahn Exp $ */ +/* $NetBSD: boot.c,v 1.1 1997/04/16 20:29:17 thorpej Exp $ */ + +/* + * Copyright (c) 1997 Jason R. Thorpe. All rights reserved. + * Copyright (C) 1995, 1996 Wolfgang Solfrank. + * Copyright (C) 1995, 1996 TooLs GmbH. + * All rights reserved. + * + * ELF support derived from NetBSD/alpha's boot loader, written + * by Christopher G. Demetriou. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by TooLs GmbH. + * 4. The name of TooLs GmbH may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * First try for the boot code + * + * Input syntax is: + * [promdev[{:|,}partition]]/[filename] [flags] + */ + +#define ELFSIZE 32 /* We use 32-bit ELF. */ + +#include <sys/param.h> +#include <sys/exec.h> +#include <sys/exec_elf.h> +#include <sys/reboot.h> +#include <sys/disklabel.h> + +#include <lib/libkern/libkern.h> +#include <lib/libsa/stand.h> +#include <lib/libsa/loadfile.h> +#include <stand/boot/cmd.h> + + +#include <machine/cpu.h> + +#include <macppc/stand/ofdev.h> +#include <macppc/stand/openfirm.h> + +char bootdev[128]; +int boothowto; +int debug; + + +void +get_alt_bootdev(char *, size_t, char *, size_t); + +static void +prom2boot(char *dev) +{ + char *cp, *lp = 0; + + for (cp = dev; *cp; cp++) + if (*cp == ':') + lp = cp; + if (!lp) + lp = cp; + *lp = 0; +} + +static void +parseargs(char *str, int *howtop) +{ + char *cp; + + /* Allow user to drop back to the PROM. */ + if (strcmp(str, "exit") == 0) + _rtt(); + + *howtop = 0; + if (str[0] == '\0') + return; + + cp = str; + while (*cp != 0) { + /* check for - */ + if (*cp == '-') + break; /* start of options found */ + + while (*cp != 0 && *cp != ' ') + cp++; /* character in the middle of the name, skip */ + + while (*cp == ' ') + *cp++ = 0; + } + if (!*cp) + return; + + *cp++ = 0; + while (*cp) { + switch (*cp++) { + case 'a': + *howtop |= RB_ASKNAME; + break; + case 'c': + *howtop |= RB_CONFIG; + break; + case 's': + *howtop |= RB_SINGLE; + break; + case 'd': + *howtop |= RB_KDB; + debug = 1; + break; + } + } +} + +static void +chain(void (*entry)(), char *args, void *ssym, void *esym) +{ + extern char end[]; + int l, machine_tag; + + freeall(); + + /* + * Stash pointer to end of symbol table after the argument + * strings. + */ + l = strlen(args) + 1; + bcopy(&ssym, args + l, sizeof(ssym)); + l += sizeof(ssym); + bcopy(&esym, args + l, sizeof(esym)); + l += sizeof(esym); + +#ifdef __notyet__ + /* + * Tell the kernel we're an OpenFirmware system. + */ + machine_tag = POWERPC_MACHINE_OPENFIRMWARE; + bcopy(&machine_tag, args + l, sizeof(machine_tag)); + l += sizeof(machine_tag); +#endif + + OF_chain((void *)RELOC, end - (char *)RELOC, entry, args, l); + panic("chain"); +} + +/* + * XXX This limits the maximum size of the (uncompressed) bsd.rd to a + * little under 11MB. + */ +#define CLAIM_LIMIT 0x00c00000 + +char bootline[512]; + +extern const char *bootfile; +int +main() +{ + int chosen; + u_long marks[MARK_MAX]; + int fd; + + + /* + * Get the boot arguments from Openfirmware + */ + if ((chosen = OF_finddevice("/chosen")) == -1 || + OF_getprop(chosen, "bootpath", bootdev, sizeof bootdev) < 0 || + OF_getprop(chosen, "bootargs", bootline, sizeof bootline) < 0) { + printf("Invalid Openfirmware environment\n"); + exit(); + } + prom2boot(bootdev); + printf("bootline [%s]\n", bootline); + get_alt_bootdev(bootdev, sizeof(bootdev), bootline, sizeof(bootline)); + if (bootline[0] != '\0') + bootfile = bootline; + + OF_claim((void *)0x00100000, CLAIM_LIMIT, 0); /* XXX */ + boot(0); + return 0; +} + +void +get_alt_bootdev(char *dev, size_t devsz, char *line, size_t linesz) +{ + char *p; + int len; + /* + * if the kernel image specified contains a ':' it is + * [device]:[kernel], so seperate the two fields. + */ + p = strrchr(line, ':'); + if (p == NULL) + return; + /* user specified boot device for kernel */ + len = p - line + 1; /* str len plus nil */ + strlcpy(dev, line, len > devsz ? devsz : len); + + strlcpy(line, p+1, linesz); /* rest of string ater ':' */ +} + + +void +devboot(dev_t dev, char *p) +{ + printf("bootdev [%s]\n", bootdev); + strlcpy(p, bootdev, BOOTDEVLEN); +} + +run_loadfile(u_long *marks, int howto) +{ + char bootline[512]; /* Should check size? */ + u_int32_t entry; + char *cp; + void *ssym, *esym; + + strlcpy(bootline, opened_name, sizeof bootline); + cp = bootline + strlen(bootline); + *cp++ = ' '; + *cp = '-'; + if (howto & RB_ASKNAME) + *++cp = 'a'; + if (howto & RB_CONFIG) + *++cp = 'c'; + if (howto & RB_SINGLE) + *++cp = 's'; + if (howto & RB_KDB) + *++cp = 'd'; + if (*cp == '-') + *--cp = 0; + else + *++cp = 0; + + entry = marks[MARK_ENTRY]; + ssym = (void *)marks[MARK_SYM]; + esym = (void *)marks[MARK_END]; + { + u_int32_t lastpage; + lastpage = roundup(marks[MARK_END], NBPG); + OF_release((void*)lastpage, CLAIM_LIMIT - lastpage); + } + + chain((void *)entry, bootline, ssym, esym); + + _rtt(); + return 0; + +} + +int +cnspeed(dev_t dev, int sp) +{ + return CONSPEED; +} + +char ttyname_buf[8]; + +char * +ttyname(int fd) +{ + snprintf(ttyname_buf, sizeof ttyname_buf, "ofc0"); + +} + +dev_t +ttydev(char *name) +{ + return makedev(0,0); +} |