diff options
Diffstat (limited to 'sys/boot/ia64/skiload/main.c')
| -rw-r--r-- | sys/boot/ia64/skiload/main.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/sys/boot/ia64/skiload/main.c b/sys/boot/ia64/skiload/main.c new file mode 100644 index 0000000..01b407d --- /dev/null +++ b/sys/boot/ia64/skiload/main.c @@ -0,0 +1,136 @@ +/*- + * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> + * Copyright (c) 1998,2000 Doug Rabson <dfr@freebsd.org> + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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. + */ + +#ifndef lint +static const char rcsid[] = + "$FreeBSD$"; +#endif /* not lint */ + +#include <stand.h> +#include <string.h> +#include <setjmp.h> +#include <machine/fpu.h> + +#include "bootstrap.h" +#include "libski.h" + +extern char bootprog_name[]; +extern char bootprog_rev[]; +extern char bootprog_date[]; +extern char bootprog_maker[]; + +struct ski_devdesc currdev; /* our current device */ +struct arch_switch archsw; /* MI/MD interface boundary */ + +void +__start(void) +{ + static char stack[16384] __attribute__((aligned (16))); + static char malloc[512*1024]; + int i; + + __asm __volatile("movl gp=__gp;;"); + __asm __volatile("mov sp=%0" :: "r"(&stack[16384])); + __asm __volatile("bsw.1;;"); + __asm __volatile("mov ar.fpsr=%0" :: "r"(IA64_FPSR_DEFAULT)); + + /* + * initialise the heap as early as possible. Once this is done, + * alloc() is usable. The stack is buried inside us, so this is + * safe. + */ + setheap((void *)malloc, (void *)(malloc + 512*1024)); + + /* + * XXX Chicken-and-egg problem; we want to have console output + * early, but some console attributes may depend on reading from + * eg. the boot device, which we can't do yet. We can use + * printf() etc. once this is done. + */ + cons_probe(); + + /* + * Initialise the block cache + */ + bcache_init(32, 512); /* 16k XXX tune this */ + + /* + * March through the device switch probing for things. + */ + for (i = 0; devsw[i] != NULL; i++) + if (devsw[i]->dv_init != NULL) + (devsw[i]->dv_init)(); + + printf("\n"); + printf("%s, Revision %s\n", bootprog_name, bootprog_rev); + printf("(%s, %s)\n", bootprog_maker, bootprog_date); +#if 0 + printf("Memory: %ld k\n", memsize() / 1024); +#endif + + /* XXX presumes that biosdisk is first in devsw */ + currdev.d_dev = devsw[0]; + currdev.d_type = currdev.d_dev->dv_type; + currdev.d_kind.skidisk.unit = 0; + /* XXX should be able to detect this, default to autoprobe */ + currdev.d_kind.skidisk.slice = -1; + /* default to 'a' */ + currdev.d_kind.skidisk.partition = 0; + +#if 0 + /* Create arc-specific variables */ + bootfile = GetEnvironmentVariable(ARCENV_BOOTFILE); + if (bootfile) + setenv("bootfile", bootfile, 1); +#endif + + env_setenv("currdev", EV_VOLATILE, ski_fmtdev(&currdev), + ski_setcurrdev, env_nounset); + env_setenv("loaddev", EV_VOLATILE, ski_fmtdev(&currdev), env_noset, + env_nounset); + + setenv("LINES", "24", 1); /* optional */ + + archsw.arch_autoload = ski_autoload; + archsw.arch_getdev = ski_getdev; + archsw.arch_copyin = ski_copyin; + archsw.arch_copyout = ski_copyout; + archsw.arch_readin = ski_readin; + + interact(); /* doesn't return */ + + exit(0); +} + +COMMAND_SET(quit, "quit", "exit the loader", command_quit); + +static int +command_quit(int argc, char *argv[]) +{ + exit(0); + return (CMD_OK); +} |
