2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * from: FreeBSD: src/sys/boot/sparc64/loader/metadata.c,v 1.6
29 #include <sys/param.h>
30 #include <sys/linker.h>
32 #include <sys/reboot.h>
33 #if defined(LOADER_FDT_SUPPORT)
34 #include <fdt_platform.h>
38 #include <machine/elf.h>
40 #include <machine/metadata.h>
42 #include "bootstrap.h"
46 * Copy module-related data into the load area, where it can be
47 * used as a directory for loaded modules.
49 * Module data is presented in a self-describing format. Each datum
50 * is preceded by a 32-bit identifier and a 32-bit size field.
52 * Currently, the following data are saved:
54 * MOD_NAME (variable) module name (string)
55 * MOD_TYPE (variable) module type (string)
56 * MOD_ARGS (variable) module parameters (string)
57 * MOD_ADDR sizeof(vm_offset_t) module load address
58 * MOD_SIZE sizeof(size_t) module size
59 * MOD_METADATA (variable) type-specific metadata
61 * Clients are required to define a MOD_ALIGN(l) macro which rounds the passed
62 * in length to the required alignment for the kernel being booted.
65 #define COPY32(v, a, c) { \
68 archsw.arch_copyin(&x, a, sizeof(x)); \
72 #define MOD_STR(t, a, s, c) { \
74 COPY32(strlen(s) + 1, a, c) \
76 archsw.arch_copyin(s, a, strlen(s) + 1);\
77 a += MOD_ALIGN(strlen(s) + 1); \
80 #define MOD_NAME(a, s, c) MOD_STR(MODINFO_NAME, a, s, c)
81 #define MOD_TYPE(a, s, c) MOD_STR(MODINFO_TYPE, a, s, c)
82 #define MOD_ARGS(a, s, c) MOD_STR(MODINFO_ARGS, a, s, c)
84 #define MOD_VAR(t, a, s, c) { \
86 COPY32(sizeof(s), a, c); \
88 archsw.arch_copyin(&s, a, sizeof(s)); \
89 a += MOD_ALIGN(sizeof(s)); \
92 #define MOD_ADDR(a, s, c) MOD_VAR(MODINFO_ADDR, a, s, c)
93 #define MOD_SIZE(a, s, c) MOD_VAR(MODINFO_SIZE, a, s, c)
95 #define MOD_METADATA(a, mm, c) { \
96 COPY32(MODINFO_METADATA | mm->md_type, a, c);\
97 COPY32(mm->md_size, a, c); \
99 archsw.arch_copyin(mm->md_data, a, mm->md_size);\
100 a += MOD_ALIGN(mm->md_size); \
103 #define MOD_END(a, c) { \
104 COPY32(MODINFO_END, a, c); \
108 #define MOD_ALIGN(l) roundup(l, align)
111 md_copymodules(vm_offset_t addr, bool kern64)
113 struct preloaded_file *fp;
114 struct file_metadata *md;
120 align = kern64 ? sizeof(uint64_t) : sizeof(uint32_t);
122 /* start with the first module on the list, should be the kernel */
123 for (fp = file_findfile(NULL, NULL); fp != NULL; fp = fp->f_next) {
125 MOD_NAME(addr, fp->f_name, c); /* this field must come first */
126 MOD_TYPE(addr, fp->f_type, c);
128 MOD_ARGS(addr, fp->f_args, c);
130 scratch64 = fp->f_addr;
131 MOD_ADDR(addr, scratch64, c);
132 scratch64 = fp->f_size;
133 MOD_SIZE(addr, scratch64, c);
135 scratch32 = fp->f_addr;
137 scratch32 -= __elfN(relocation_offset);
139 MOD_ADDR(addr, scratch32, c);
140 MOD_SIZE(addr, fp->f_size, c);
142 for (md = fp->f_metadata; md != NULL; md = md->md_next) {
143 if (!(md->md_type & MODINFOMD_NOCOPY)) {
144 MOD_METADATA(addr, md, c);
153 * Copy the environment into the load area starting at (addr).
154 * Each variable is formatted as <name>=<value>, with a single nul
155 * separating each variable, and a double nul terminating the environment.
158 md_copyenv(vm_offset_t start)
161 vm_offset_t addr, last;
166 /* Traverse the environment. */
167 for (ep = environ; ep != NULL; ep = ep->ev_next) {
168 len = strlen(ep->ev_name);
169 if ((size_t)archsw.arch_copyin(ep->ev_name, addr, len) != len)
172 if (archsw.arch_copyin("=", addr, 1) != 1)
175 if (ep->ev_value != NULL) {
176 len = strlen(ep->ev_value);
177 if ((size_t)archsw.arch_copyin(ep->ev_value, addr, len) != len)
181 if (archsw.arch_copyin("", addr, 1) != 1)
186 if (archsw.arch_copyin("", last++, 1) != 1)