diff options
Diffstat (limited to 'sys/boot/alpha/libalpha/bootinfo.c')
-rw-r--r-- | sys/boot/alpha/libalpha/bootinfo.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/sys/boot/alpha/libalpha/bootinfo.c b/sys/boot/alpha/libalpha/bootinfo.c deleted file mode 100644 index 106ad45..0000000 --- a/sys/boot/alpha/libalpha/bootinfo.c +++ /dev/null @@ -1,234 +0,0 @@ -/*- - * Copyright (c) 1998 Michael Smith <msmith@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. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <stand.h> -#include <string.h> -#include <sys/param.h> -#include <sys/linker.h> -#include <machine/elf.h> -#include <machine/prom.h> -#include <machine/rpb.h> -#include <machine/bootinfo.h> -#include "bootstrap.h" - -extern char *alpha_fmtdev(void *vdev); - -/* - * 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 -bi_copyenv(vm_offset_t addr) -{ - struct env_var *ep; - - /* traverse the environment */ - for (ep = environ; ep != NULL; ep = ep->ev_next) { - alpha_copyin(ep->ev_name, addr, strlen(ep->ev_name)); - addr += strlen(ep->ev_name); - alpha_copyin("=", addr, 1); - addr++; - if (ep->ev_value != NULL) { - alpha_copyin(ep->ev_value, addr, strlen(ep->ev_value)); - addr += strlen(ep->ev_value); - } - alpha_copyin("", addr, 1); - addr++; - } - alpha_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) { \ - u_int32_t x = (v); \ - alpha_copyin(&x, a, sizeof(x)); \ - a += sizeof(x); \ -} - -#define MOD_STR(t, a, s) { \ - COPY32(t, a); \ - COPY32(strlen(s) + 1, a); \ - alpha_copyin(s, a, strlen(s) + 1); \ - a += roundup(strlen(s) + 1, sizeof(u_int64_t));\ -} - -#define MOD_NAME(a, s) MOD_STR(MODINFO_NAME, a, s) -#define MOD_TYPE(a, s) MOD_STR(MODINFO_TYPE, a, s) -#define MOD_ARGS(a, s) MOD_STR(MODINFO_ARGS, a, s) - -#define MOD_VAR(t, a, s) { \ - COPY32(t, a); \ - COPY32(sizeof(s), a); \ - alpha_copyin(&s, a, sizeof(s)); \ - a += roundup(sizeof(s), sizeof(u_int64_t)); \ -} - -#define MOD_ADDR(a, s) MOD_VAR(MODINFO_ADDR, a, s) -#define MOD_SIZE(a, s) MOD_VAR(MODINFO_SIZE, a, s) - -#define MOD_METADATA(a, mm) { \ - COPY32(MODINFO_METADATA | mm->md_type, a); \ - COPY32(mm->md_size, a); \ - alpha_copyin(mm->md_data, a, mm->md_size); \ - a += roundup(mm->md_size, sizeof(u_int64_t));\ -} - -#define MOD_END(a) { \ - COPY32(MODINFO_END, a); \ - COPY32(0, a); \ -} - -vm_offset_t -bi_copymodules(vm_offset_t addr) -{ - struct preloaded_file *fp; - struct file_metadata *md; - - /* 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); /* this field must come first */ - MOD_TYPE(addr, fp->f_type); - if (fp->f_args) - MOD_ARGS(addr, fp->f_args); - MOD_ADDR(addr, fp->f_addr); - MOD_SIZE(addr, fp->f_size); - for (md = fp->f_metadata; md != NULL; md = md->md_next) - if (!(md->md_type & MODINFOMD_NOCOPY)) - MOD_METADATA(addr, md); - } - MOD_END(addr); - return(addr); -} - -/* - * Load the information expected by an alpha kernel. - * - * - The kernel environment is copied into kernel space. - * - Module metadata are formatted and placed in kernel space. - */ -int -bi_load(struct bootinfo_v1 *bi, vm_offset_t *ffp_save, - struct preloaded_file *fp) -{ - char *rootdevname; - struct alpha_devdesc *rootdev; - struct preloaded_file *xp; - vm_offset_t addr, bootinfo_addr; - u_int pad; - char *kernelname; - vm_offset_t ssym, esym; - struct file_metadata *md; - - /* - * 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"); - alpha_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(alpha_fmtdev((void *)rootdev)); - free(rootdev); - - ssym = esym = 0; - if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL) - ssym = *((vm_offset_t *)&(md->md_data)); - if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL) - esym = *((vm_offset_t *)&(md->md_data)); - if (ssym == 0 || esym == 0) - ssym = esym = 0; /* sanity */ - - bi->ssym = ssym; - bi->esym = esym; - - /* 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 */ - pad = (u_int)addr & PAGE_MASK; - if (pad != 0) { - pad = PAGE_SIZE - pad; - addr += pad; - } - - /* copy our environment */ - bi->envp = (char *)addr; - addr = bi_copyenv(addr); - - /* pad to a page boundary */ - pad = (u_int)addr & PAGE_MASK; - if (pad != 0) { - pad = PAGE_SIZE - pad; - addr += pad; - } - /* copy module list and metadata */ - bi->modptr = addr; - addr = bi_copymodules(addr); - - /* all done copying stuff in, save end of loaded object space */ - bi->kernend = addr; - - *ffp_save = ALPHA_K0SEG_TO_PHYS((addr + PAGE_MASK) & ~PAGE_MASK) - >> PAGE_SHIFT; - *ffp_save += 2; /* XXX OSF/1 does this, no idea why. */ - - kernelname = getenv("kernelname"); - if (kernelname) { - strncpy(bi->booted_kernel, kernelname, sizeof(bi->booted_kernel) - 1); - } - - return(0); -} |