205 lines
6.0 KiB
C
205 lines
6.0 KiB
C
/*-
|
|
* 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"
|
|
|
|
/*
|
|
* 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_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_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);
|
|
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)
|
|
{
|
|
struct preloaded_file *xp;
|
|
vm_offset_t addr, bootinfo_addr;
|
|
u_int pad;
|
|
vm_offset_t ssym, esym;
|
|
struct file_metadata *md;
|
|
|
|
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. */
|
|
|
|
return(0);
|
|
}
|