mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-06 17:18:32 +00:00
![Warner Losh](/assets/img/avatar_default.png)
Use the efi's bi_copyenv to md_copyenv and place it in modinfo.c. Remove all other nearly identical and efi's has the best error handling. Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D36574
190 lines
5.5 KiB
C
190 lines
5.5 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.
|
|
*
|
|
* from: FreeBSD: src/sys/boot/sparc64/loader/metadata.c,v 1.6
|
|
*/
|
|
#include <stand.h>
|
|
#include <sys/param.h>
|
|
#include <sys/linker.h>
|
|
#include <sys/boot.h>
|
|
#include <sys/reboot.h>
|
|
#if defined(LOADER_FDT_SUPPORT)
|
|
#include <fdt_platform.h>
|
|
#endif
|
|
|
|
#ifdef __arm__
|
|
#include <machine/elf.h>
|
|
#endif
|
|
#include <machine/metadata.h>
|
|
|
|
#include "bootstrap.h"
|
|
#include "modinfo.h"
|
|
|
|
/*
|
|
* 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
|
|
*
|
|
* Clients are required to define a MOD_ALIGN(l) macro which rounds the passed
|
|
* in length to the required alignment for the kernel being booted.
|
|
*/
|
|
|
|
#define COPY32(v, a, c) { \
|
|
uint32_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 += MOD_ALIGN(strlen(s) + 1); \
|
|
}
|
|
|
|
#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 += MOD_ALIGN(sizeof(s)); \
|
|
}
|
|
|
|
#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 += MOD_ALIGN(mm->md_size); \
|
|
}
|
|
|
|
#define MOD_END(a, c) { \
|
|
COPY32(MODINFO_END, a, c); \
|
|
COPY32(0, a, c); \
|
|
}
|
|
|
|
#define MOD_ALIGN(l) roundup(l, align)
|
|
|
|
vm_offset_t
|
|
md_copymodules(vm_offset_t addr, bool kern64)
|
|
{
|
|
struct preloaded_file *fp;
|
|
struct file_metadata *md;
|
|
uint64_t scratch64;
|
|
uint32_t scratch32;
|
|
int c;
|
|
int align;
|
|
|
|
align = kern64 ? sizeof(uint64_t) : sizeof(uint32_t);
|
|
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);
|
|
if (kern64) {
|
|
scratch64 = fp->f_addr;
|
|
MOD_ADDR(addr, scratch64, c);
|
|
scratch64 = fp->f_size;
|
|
MOD_SIZE(addr, scratch64, c);
|
|
} else {
|
|
scratch32 = fp->f_addr;
|
|
#ifdef __arm__
|
|
scratch32 -= __elfN(relocation_offset);
|
|
#endif
|
|
MOD_ADDR(addr, scratch32, 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);
|
|
}
|
|
|
|
/*
|
|
* 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 start)
|
|
{
|
|
struct env_var *ep;
|
|
vm_offset_t addr, last;
|
|
size_t len;
|
|
|
|
addr = last = start;
|
|
|
|
/* Traverse the environment. */
|
|
for (ep = environ; ep != NULL; ep = ep->ev_next) {
|
|
len = strlen(ep->ev_name);
|
|
if ((size_t)archsw.arch_copyin(ep->ev_name, addr, len) != len)
|
|
break;
|
|
addr += len;
|
|
if (archsw.arch_copyin("=", addr, 1) != 1)
|
|
break;
|
|
addr++;
|
|
if (ep->ev_value != NULL) {
|
|
len = strlen(ep->ev_value);
|
|
if ((size_t)archsw.arch_copyin(ep->ev_value, addr, len) != len)
|
|
break;
|
|
addr += len;
|
|
}
|
|
if (archsw.arch_copyin("", addr, 1) != 1)
|
|
break;
|
|
last = ++addr;
|
|
}
|
|
|
|
if (archsw.arch_copyin("", last++, 1) != 1)
|
|
last = start;
|
|
return(last);
|
|
}
|