Add support for passing metadata.
This commit is contained in:
Benno Rice
parent
336cca9e5f
commit
631c19755e
@ -29,9 +29,7 @@
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#include <sys/param.h>
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#include <sys/linker.h>
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#if 0
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#include <machine/bootinfo.h>
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#endif
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#include <machine/metadata.h>
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#include <machine/elf.h>
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#include <stand.h>
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@ -65,51 +63,25 @@ ofw_elf_loadfile(char *filename, vm_offset_t dest,
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int
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ofw_elf_exec(struct preloaded_file *fp)
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{
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struct file_metadata *md;
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Elf_Ehdr *ehdr;
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vm_offset_t entry, bootinfop;
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int boothowto, err, bootdev;
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#if 0
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struct bootinfo *bi;
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#endif
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vm_offset_t ssym, esym;
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struct file_metadata *fmp;
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vm_offset_t mdp;
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Elf_Ehdr *e;
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int error;
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if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
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return(EFTYPE); /* XXX actually EFUCKUP */
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if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
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return(EFTYPE);
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}
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ehdr = (Elf_Ehdr *)&(md->md_data);
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e = (Elf_Ehdr *)&fmp->md_data;
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#if 0
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if ((err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop)) != 0)
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return(err);
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#endif
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entry = ehdr->e_entry & 0xffffff;
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if ((error = md_load(fp->f_args, &mdp)) != 0)
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return (error);
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ssym = esym = 0;
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if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL)
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ssym = *((vm_offset_t *)&(md->md_data));
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if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL)
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esym = *((vm_offset_t *)&(md->md_data));
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if (ssym == 0 || esym == 0)
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ssym = esym = 0; /* sanity */
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#if 0
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bi = (struct bootinfo *)PTOV(bootinfop);
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bi->bi_symtab = ssym;
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bi->bi_esymtab = esym;
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#endif
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/*
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#ifdef DEBUG
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*/
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printf("Start @ 0x%lx ...\n", entry);
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/*
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#endif
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*/
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printf("Kernel entry at 0x%lx ...\n", e->e_entry);
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dev_cleanup();
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ofw_release_heap();
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/* OF_chain(0, 0, entry, bootinfop, sizeof(struct bootinfo));*/
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OF_chain((void *)reloc, end - (char *)reloc, (void *)entry, NULL, 0);
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OF_chain((void *)reloc, end - (char *)reloc, (void *)e->e_entry,
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(void *)mdp, sizeof(mdp));
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panic("exec returned");
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}
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@ -17,7 +17,7 @@ RELOC?= 0x6c0000
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CFLAGS+= -DRELOC=${RELOC}
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# architecture-specific loader code
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SRCS= conf.c
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SRCS= conf.c metadata.c
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# Pull in common loader code
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.PATH: ${.CURDIR}/../../ofw/common
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321
sys/boot/powerpc/loader/metadata.c
Normal file
321
sys/boot/powerpc/loader/metadata.c
Normal file
@ -0,0 +1,321 @@
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/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: FreeBSD: src/sys/boot/sparc64/loader/metadata.c,v 1.6
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* $FreeBSD$
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*/
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#include <stand.h>
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <sys/linker.h>
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#include <machine/metadata.h>
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#include "bootstrap.h"
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#include "libofw.h"
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/*
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* Return a 'boothowto' value corresponding to the kernel arguments in
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* (kargs) and any relevant environment variables.
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*/
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static struct
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{
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const char *ev;
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int mask;
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} howto_names[] = {
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{"boot_askname", RB_ASKNAME},
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{"boot_cdrom", RB_CDROM},
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{"boot_userconfig", RB_CONFIG},
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{"boot_ddb", RB_KDB},
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{"boot_gdb", RB_GDB},
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{"boot_single", RB_SINGLE},
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{"boot_verbose", RB_VERBOSE},
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{"boot_multicons", RB_MULTIPLE},
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{"boot_serial", RB_SERIAL},
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{NULL, 0}
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};
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int
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md_getboothowto(char *kargs)
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{
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char *cp;
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int howto;
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int active;
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int i;
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/* Parse kargs */
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howto = 0;
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if (kargs != NULL) {
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cp = kargs;
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active = 0;
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while (*cp != 0) {
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if (!active && (*cp == '-')) {
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active = 1;
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} else if (active)
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switch (*cp) {
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case 'a':
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howto |= RB_ASKNAME;
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break;
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case 'c':
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howto |= RB_CONFIG;
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break;
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case 'C':
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howto |= RB_CDROM;
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break;
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case 'd':
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howto |= RB_KDB;
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break;
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case 'D':
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howto |= RB_MULTIPLE;
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break;
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case 'm':
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howto |= RB_MUTE;
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break;
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case 'g':
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howto |= RB_GDB;
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break;
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case 'h':
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howto |= RB_SERIAL;
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break;
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case 'r':
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howto |= RB_DFLTROOT;
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break;
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case 's':
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howto |= RB_SINGLE;
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break;
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case 'v':
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howto |= RB_VERBOSE;
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break;
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default:
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active = 0;
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break;
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}
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cp++;
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}
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}
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/* get equivalents from the environment */
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for (i = 0; howto_names[i].ev != NULL; i++)
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if (getenv(howto_names[i].ev) != NULL)
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howto |= howto_names[i].mask;
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if (!strcmp(getenv("console"), "comconsole"))
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howto |= RB_SERIAL;
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if (!strcmp(getenv("console"), "nullconsole"))
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howto |= RB_MUTE;
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return(howto);
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}
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/*
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* Copy the environment into the load area starting at (addr).
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* Each variable is formatted as <name>=<value>, with a single nul
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* separating each variable, and a double nul terminating the environment.
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*/
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vm_offset_t
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md_copyenv(vm_offset_t addr)
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{
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struct env_var *ep;
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/* traverse the environment */
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for (ep = environ; ep != NULL; ep = ep->ev_next) {
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archsw.arch_copyin(ep->ev_name, addr, strlen(ep->ev_name));
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addr += strlen(ep->ev_name);
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archsw.arch_copyin("=", addr, 1);
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addr++;
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if (ep->ev_value != NULL) {
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archsw.arch_copyin(ep->ev_value, addr, strlen(ep->ev_value));
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addr += strlen(ep->ev_value);
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}
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archsw.arch_copyin("", addr, 1);
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addr++;
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}
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archsw.arch_copyin("", addr, 1);
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addr++;
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return(addr);
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}
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/*
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* Copy module-related data into the load area, where it can be
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* used as a directory for loaded modules.
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*
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* Module data is presented in a self-describing format. Each datum
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* is preceded by a 32-bit identifier and a 32-bit size field.
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*
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* Currently, the following data are saved:
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*
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* MOD_NAME (variable) module name (string)
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* MOD_TYPE (variable) module type (string)
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* MOD_ARGS (variable) module parameters (string)
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* MOD_ADDR sizeof(vm_offset_t) module load address
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* MOD_SIZE sizeof(size_t) module size
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* MOD_METADATA (variable) type-specific metadata
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*/
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#define COPY32(v, a, c) { \
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u_int32_t x = (v); \
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if (c) \
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archsw.arch_copyin(&x, a, sizeof(x)); \
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a += sizeof(x); \
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}
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#define MOD_STR(t, a, s, c) { \
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COPY32(t, a, c); \
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COPY32(strlen(s) + 1, a, c) \
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if (c) \
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archsw.arch_copyin(s, a, strlen(s) + 1);\
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a += roundup(strlen(s) + 1, sizeof(u_long));\
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}
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#define MOD_NAME(a, s, c) MOD_STR(MODINFO_NAME, a, s, c)
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#define MOD_TYPE(a, s, c) MOD_STR(MODINFO_TYPE, a, s, c)
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#define MOD_ARGS(a, s, c) MOD_STR(MODINFO_ARGS, a, s, c)
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#define MOD_VAR(t, a, s, c) { \
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COPY32(t, a, c); \
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COPY32(sizeof(s), a, c); \
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if (c) \
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archsw.arch_copyin(&s, a, sizeof(s)); \
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a += roundup(sizeof(s), sizeof(u_long)); \
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}
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#define MOD_ADDR(a, s, c) MOD_VAR(MODINFO_ADDR, a, s, c)
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#define MOD_SIZE(a, s, c) MOD_VAR(MODINFO_SIZE, a, s, c)
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#define MOD_METADATA(a, mm, c) { \
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COPY32(MODINFO_METADATA | mm->md_type, a, c);\
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COPY32(mm->md_size, a, c); \
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if (c) \
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archsw.arch_copyin(mm->md_data, a, mm->md_size);\
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a += roundup(mm->md_size, sizeof(u_long)); \
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}
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#define MOD_END(a, c) { \
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COPY32(MODINFO_END, a, c); \
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COPY32(0, a, c); \
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}
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vm_offset_t
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md_copymodules(vm_offset_t addr)
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{
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struct preloaded_file *fp;
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struct file_metadata *md;
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int c;
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c = addr != 0;
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/* start with the first module on the list, should be the kernel */
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for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
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MOD_NAME(addr, fp->f_name, c); /* this field must come first */
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MOD_TYPE(addr, fp->f_type, c);
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if (fp->f_args)
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MOD_ARGS(addr, fp->f_args, c);
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MOD_ADDR(addr, fp->f_addr, c);
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MOD_SIZE(addr, fp->f_size, c);
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for (md = fp->f_metadata; md != NULL; md = md->md_next) {
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if (!(md->md_type & MODINFOMD_NOCOPY)) {
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MOD_METADATA(addr, md, c);
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}
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}
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}
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MOD_END(addr, c);
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return(addr);
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}
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/*
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* Load the information expected by a powerpc kernel.
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*
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* - The 'boothowto' argument is constructed
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* - The 'bootdev' argument is constructed
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* - The kernel environment is copied into kernel space.
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* - Module metadata are formatted and placed in kernel space.
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*/
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int
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md_load(char *args, vm_offset_t *modulep)
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{
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struct preloaded_file *kfp;
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struct preloaded_file *xp;
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struct file_metadata *md;
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struct ofw_devdesc *rootdev;
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vm_offset_t kernend;
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vm_offset_t addr;
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vm_offset_t envp;
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vm_offset_t size;
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char *rootdevname;
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int howto;
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int dtlb_slots;
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int itlb_slots;
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howto = md_getboothowto(args);
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/*
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* Allow the environment variable 'rootdev' to override the supplied device
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* This should perhaps go to MI code and/or have $rootdev tested/set by
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* MI code before launching the kernel.
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*/
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rootdevname = getenv("rootdev");
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ofw_getdev((void **)(&rootdev), rootdevname, NULL);
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if (rootdev == NULL) { /* bad $rootdev/$currdev */
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printf("can't determine root device\n");
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return(EINVAL);
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}
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/* Try reading the /etc/fstab file to select the root device */
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getrootmount(ofw_fmtdev((void *)rootdev));
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free(rootdev);
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/* find the last module in the chain */
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addr = 0;
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for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
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if (addr < (xp->f_addr + xp->f_size))
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addr = xp->f_addr + xp->f_size;
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}
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/* pad to a page boundary */
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addr = roundup(addr, PAGE_SIZE);
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/* copy our environment */
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envp = addr;
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addr = md_copyenv(addr);
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/* pad to a page boundary */
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addr = roundup(addr, PAGE_SIZE);
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kernend = 0;
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kfp = file_findfile(NULL, "elf kernel");
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if (kfp == NULL)
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panic("can't find kernel file");
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file_addmetadata(kfp, MODINFOMD_HOWTO, sizeof howto, &howto);
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file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
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file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
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*modulep = addr;
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size = md_copymodules(0);
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kernend = roundup(addr + size, PAGE_SIZE);
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md = file_findmetadata(kfp, MODINFOMD_KERNEND);
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bcopy(&kernend, md->md_data, sizeof kernend);
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(void)md_copymodules(addr);
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return(0);
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}
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@ -17,7 +17,7 @@ RELOC?= 0x6c0000
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CFLAGS+= -DRELOC=${RELOC}
|
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|
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# architecture-specific loader code
|
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SRCS= conf.c
|
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SRCS= conf.c metadata.c
|
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|
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# Pull in common loader code
|
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.PATH: ${.CURDIR}/../../ofw/common
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|
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321
sys/boot/powerpc/ofw/metadata.c
Normal file
321
sys/boot/powerpc/ofw/metadata.c
Normal file
@ -0,0 +1,321 @@
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/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
|
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* All rights reserved.
|
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*
|
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* Redistribution and use in source and binary forms, with or without
|
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* 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
|
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
|
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*
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* from: FreeBSD: src/sys/boot/sparc64/loader/metadata.c,v 1.6
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* $FreeBSD$
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*/
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#include <stand.h>
|
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#include <sys/param.h>
|
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#include <sys/reboot.h>
|
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#include <sys/linker.h>
|
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|
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#include <machine/metadata.h>
|
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|
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#include "bootstrap.h"
|
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#include "libofw.h"
|
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|
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/*
|
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* Return a 'boothowto' value corresponding to the kernel arguments in
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* (kargs) and any relevant environment variables.
|
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*/
|
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static struct
|
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{
|
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const char *ev;
|
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int mask;
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} howto_names[] = {
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{"boot_askname", RB_ASKNAME},
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{"boot_cdrom", RB_CDROM},
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{"boot_userconfig", RB_CONFIG},
|
||||
{"boot_ddb", RB_KDB},
|
||||
{"boot_gdb", RB_GDB},
|
||||
{"boot_single", RB_SINGLE},
|
||||
{"boot_verbose", RB_VERBOSE},
|
||||
{"boot_multicons", RB_MULTIPLE},
|
||||
{"boot_serial", RB_SERIAL},
|
||||
{NULL, 0}
|
||||
};
|
||||
|
||||
int
|
||||
md_getboothowto(char *kargs)
|
||||
{
|
||||
char *cp;
|
||||
int howto;
|
||||
int active;
|
||||
int i;
|
||||
|
||||
/* Parse kargs */
|
||||
howto = 0;
|
||||
if (kargs != NULL) {
|
||||
cp = kargs;
|
||||
active = 0;
|
||||
while (*cp != 0) {
|
||||
if (!active && (*cp == '-')) {
|
||||
active = 1;
|
||||
} else if (active)
|
||||
switch (*cp) {
|
||||
case 'a':
|
||||
howto |= RB_ASKNAME;
|
||||
break;
|
||||
case 'c':
|
||||
howto |= RB_CONFIG;
|
||||
break;
|
||||
case 'C':
|
||||
howto |= RB_CDROM;
|
||||
break;
|
||||
case 'd':
|
||||
howto |= RB_KDB;
|
||||
break;
|
||||
case 'D':
|
||||
howto |= RB_MULTIPLE;
|
||||
break;
|
||||
case 'm':
|
||||
howto |= RB_MUTE;
|
||||
break;
|
||||
case 'g':
|
||||
howto |= RB_GDB;
|
||||
break;
|
||||
case 'h':
|
||||
howto |= RB_SERIAL;
|
||||
break;
|
||||
case 'r':
|
||||
howto |= RB_DFLTROOT;
|
||||
break;
|
||||
case 's':
|
||||
howto |= RB_SINGLE;
|
||||
break;
|
||||
case 'v':
|
||||
howto |= RB_VERBOSE;
|
||||
break;
|
||||
default:
|
||||
active = 0;
|
||||
break;
|
||||
}
|
||||
cp++;
|
||||
}
|
||||
}
|
||||
/* get equivalents from the environment */
|
||||
for (i = 0; howto_names[i].ev != NULL; i++)
|
||||
if (getenv(howto_names[i].ev) != NULL)
|
||||
howto |= howto_names[i].mask;
|
||||
if (!strcmp(getenv("console"), "comconsole"))
|
||||
howto |= RB_SERIAL;
|
||||
if (!strcmp(getenv("console"), "nullconsole"))
|
||||
howto |= RB_MUTE;
|
||||
return(howto);
|
||||
}
|
||||
|
||||
/*
|
||||
* Copy the environment into the load area starting at (addr).
|
||||
* Each variable is formatted as <name>=<value>, with a single nul
|
||||
* separating each variable, and a double nul terminating the environment.
|
||||
*/
|
||||
vm_offset_t
|
||||
md_copyenv(vm_offset_t addr)
|
||||
{
|
||||
struct env_var *ep;
|
||||
|
||||
/* traverse the environment */
|
||||
for (ep = environ; ep != NULL; ep = ep->ev_next) {
|
||||
archsw.arch_copyin(ep->ev_name, addr, strlen(ep->ev_name));
|
||||
addr += strlen(ep->ev_name);
|
||||
archsw.arch_copyin("=", addr, 1);
|
||||
addr++;
|
||||
if (ep->ev_value != NULL) {
|
||||
archsw.arch_copyin(ep->ev_value, addr, strlen(ep->ev_value));
|
||||
addr += strlen(ep->ev_value);
|
||||
}
|
||||
archsw.arch_copyin("", addr, 1);
|
||||
addr++;
|
||||
}
|
||||
archsw.arch_copyin("", addr, 1);
|
||||
addr++;
|
||||
return(addr);
|
||||
}
|
||||
|
||||
/*
|
||||
* Copy module-related data into the load area, where it can be
|
||||
* used as a directory for loaded modules.
|
||||
*
|
||||
* Module data is presented in a self-describing format. Each datum
|
||||
* is preceded by a 32-bit identifier and a 32-bit size field.
|
||||
*
|
||||
* Currently, the following data are saved:
|
||||
*
|
||||
* MOD_NAME (variable) module name (string)
|
||||
* MOD_TYPE (variable) module type (string)
|
||||
* MOD_ARGS (variable) module parameters (string)
|
||||
* MOD_ADDR sizeof(vm_offset_t) module load address
|
||||
* MOD_SIZE sizeof(size_t) module size
|
||||
* MOD_METADATA (variable) type-specific metadata
|
||||
*/
|
||||
#define COPY32(v, a, c) { \
|
||||
u_int32_t x = (v); \
|
||||
if (c) \
|
||||
archsw.arch_copyin(&x, a, sizeof(x)); \
|
||||
a += sizeof(x); \
|
||||
}
|
||||
|
||||
#define MOD_STR(t, a, s, c) { \
|
||||
COPY32(t, a, c); \
|
||||
COPY32(strlen(s) + 1, a, c) \
|
||||
if (c) \
|
||||
archsw.arch_copyin(s, a, strlen(s) + 1);\
|
||||
a += roundup(strlen(s) + 1, sizeof(u_long));\
|
||||
}
|
||||
|
||||
#define MOD_NAME(a, s, c) MOD_STR(MODINFO_NAME, a, s, c)
|
||||
#define MOD_TYPE(a, s, c) MOD_STR(MODINFO_TYPE, a, s, c)
|
||||
#define MOD_ARGS(a, s, c) MOD_STR(MODINFO_ARGS, a, s, c)
|
||||
|
||||
#define MOD_VAR(t, a, s, c) { \
|
||||
COPY32(t, a, c); \
|
||||
COPY32(sizeof(s), a, c); \
|
||||
if (c) \
|
||||
archsw.arch_copyin(&s, a, sizeof(s)); \
|
||||
a += roundup(sizeof(s), sizeof(u_long)); \
|
||||
}
|
||||
|
||||
#define MOD_ADDR(a, s, c) MOD_VAR(MODINFO_ADDR, a, s, c)
|
||||
#define MOD_SIZE(a, s, c) MOD_VAR(MODINFO_SIZE, a, s, c)
|
||||
|
||||
#define MOD_METADATA(a, mm, c) { \
|
||||
COPY32(MODINFO_METADATA | mm->md_type, a, c);\
|
||||
COPY32(mm->md_size, a, c); \
|
||||
if (c) \
|
||||
archsw.arch_copyin(mm->md_data, a, mm->md_size);\
|
||||
a += roundup(mm->md_size, sizeof(u_long)); \
|
||||
}
|
||||
|
||||
#define MOD_END(a, c) { \
|
||||
COPY32(MODINFO_END, a, c); \
|
||||
COPY32(0, a, c); \
|
||||
}
|
||||
|
||||
vm_offset_t
|
||||
md_copymodules(vm_offset_t addr)
|
||||
{
|
||||
struct preloaded_file *fp;
|
||||
struct file_metadata *md;
|
||||
int c;
|
||||
|
||||
c = addr != 0;
|
||||
/* start with the first module on the list, should be the kernel */
|
||||
for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
|
||||
|
||||
MOD_NAME(addr, fp->f_name, c); /* this field must come first */
|
||||
MOD_TYPE(addr, fp->f_type, c);
|
||||
if (fp->f_args)
|
||||
MOD_ARGS(addr, fp->f_args, c);
|
||||
MOD_ADDR(addr, fp->f_addr, c);
|
||||
MOD_SIZE(addr, fp->f_size, c);
|
||||
for (md = fp->f_metadata; md != NULL; md = md->md_next) {
|
||||
if (!(md->md_type & MODINFOMD_NOCOPY)) {
|
||||
MOD_METADATA(addr, md, c);
|
||||
}
|
||||
}
|
||||
}
|
||||
MOD_END(addr, c);
|
||||
return(addr);
|
||||
}
|
||||
|
||||
/*
|
||||
* Load the information expected by a powerpc kernel.
|
||||
*
|
||||
* - The 'boothowto' argument is constructed
|
||||
* - The 'bootdev' argument is constructed
|
||||
* - The kernel environment is copied into kernel space.
|
||||
* - Module metadata are formatted and placed in kernel space.
|
||||
*/
|
||||
int
|
||||
md_load(char *args, vm_offset_t *modulep)
|
||||
{
|
||||
struct preloaded_file *kfp;
|
||||
struct preloaded_file *xp;
|
||||
struct file_metadata *md;
|
||||
struct ofw_devdesc *rootdev;
|
||||
vm_offset_t kernend;
|
||||
vm_offset_t addr;
|
||||
vm_offset_t envp;
|
||||
vm_offset_t size;
|
||||
char *rootdevname;
|
||||
int howto;
|
||||
int dtlb_slots;
|
||||
int itlb_slots;
|
||||
|
||||
howto = md_getboothowto(args);
|
||||
|
||||
/*
|
||||
* Allow the environment variable 'rootdev' to override the supplied device
|
||||
* This should perhaps go to MI code and/or have $rootdev tested/set by
|
||||
* MI code before launching the kernel.
|
||||
*/
|
||||
rootdevname = getenv("rootdev");
|
||||
ofw_getdev((void **)(&rootdev), rootdevname, NULL);
|
||||
if (rootdev == NULL) { /* bad $rootdev/$currdev */
|
||||
printf("can't determine root device\n");
|
||||
return(EINVAL);
|
||||
}
|
||||
|
||||
/* Try reading the /etc/fstab file to select the root device */
|
||||
getrootmount(ofw_fmtdev((void *)rootdev));
|
||||
|
||||
free(rootdev);
|
||||
|
||||
/* find the last module in the chain */
|
||||
addr = 0;
|
||||
for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
|
||||
if (addr < (xp->f_addr + xp->f_size))
|
||||
addr = xp->f_addr + xp->f_size;
|
||||
}
|
||||
/* pad to a page boundary */
|
||||
addr = roundup(addr, PAGE_SIZE);
|
||||
|
||||
/* copy our environment */
|
||||
envp = addr;
|
||||
addr = md_copyenv(addr);
|
||||
|
||||
/* pad to a page boundary */
|
||||
addr = roundup(addr, PAGE_SIZE);
|
||||
|
||||
kernend = 0;
|
||||
kfp = file_findfile(NULL, "elf kernel");
|
||||
if (kfp == NULL)
|
||||
panic("can't find kernel file");
|
||||
file_addmetadata(kfp, MODINFOMD_HOWTO, sizeof howto, &howto);
|
||||
file_addmetadata(kfp, MODINFOMD_ENVP, sizeof envp, &envp);
|
||||
file_addmetadata(kfp, MODINFOMD_KERNEND, sizeof kernend, &kernend);
|
||||
|
||||
*modulep = addr;
|
||||
size = md_copymodules(0);
|
||||
kernend = roundup(addr + size, PAGE_SIZE);
|
||||
|
||||
md = file_findmetadata(kfp, MODINFOMD_KERNEND);
|
||||
bcopy(&kernend, md->md_data, sizeof kernend);
|
||||
|
||||
(void)md_copymodules(addr);
|
||||
|
||||
return(0);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user