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 * $FreeBSD: src/sys/boot/arc/lib/bootinfo.c,v 1.2.2.1 2001/03/04 04:40:41 obrien Exp $
27 * $DragonFly: src/sys/boot/arc/lib/Attic/bootinfo.c,v 1.2 2003/06/17 04:28:16 dillon Exp $
32 #include <sys/param.h>
33 #include <sys/reboot.h>
34 #include <sys/linker.h>
35 #include <machine/elf.h>
36 #include <machine/prom.h>
37 #include <machine/rpb.h>
38 #include <machine/bootinfo.h>
39 #include "bootstrap.h"
42 * Copy the environment into the load area starting at (addr).
43 * Each variable is formatted as <name>=<value>, with a single nul
44 * separating each variable, and a double nul terminating the environment.
47 bi_copyenv(vm_offset_t addr)
51 /* traverse the environment */
52 for (ep = environ; ep != NULL; ep = ep->ev_next) {
53 alpha_copyin(ep->ev_name, addr, strlen(ep->ev_name));
54 addr += strlen(ep->ev_name);
55 alpha_copyin("=", addr, 1);
57 if (ep->ev_value != NULL) {
58 alpha_copyin(ep->ev_value, addr, strlen(ep->ev_value));
59 addr += strlen(ep->ev_value);
61 alpha_copyin("", addr, 1);
64 alpha_copyin("", addr, 1);
70 * Copy module-related data into the load area, where it can be
71 * used as a directory for loaded modules.
73 * Module data is presented in a self-describing format. Each datum
74 * is preceded by a 32-bit identifier and a 32-bit size field.
76 * Currently, the following data are saved:
78 * MOD_NAME (variable) module name (string)
79 * MOD_TYPE (variable) module type (string)
80 * MOD_ADDR sizeof(vm_offset_t) module load address
81 * MOD_SIZE sizeof(size_t) module size
82 * MOD_METADATA (variable) type-specific metadata
84 #define COPY32(v, a) { \
86 alpha_copyin(&x, a, sizeof(x)); \
90 #define MOD_STR(t, a, s) { \
92 COPY32(strlen(s) + 1, a); \
93 alpha_copyin(s, a, strlen(s) + 1); \
94 a += roundup(strlen(s) + 1, sizeof(u_int64_t));\
97 #define MOD_NAME(a, s) MOD_STR(MODINFO_NAME, a, s)
98 #define MOD_TYPE(a, s) MOD_STR(MODINFO_TYPE, a, s)
100 #define MOD_VAR(t, a, s) { \
102 COPY32(sizeof(s), a); \
103 alpha_copyin(&s, a, sizeof(s)); \
104 a += roundup(sizeof(s), sizeof(u_int64_t)); \
107 #define MOD_ADDR(a, s) MOD_VAR(MODINFO_ADDR, a, s)
108 #define MOD_SIZE(a, s) MOD_VAR(MODINFO_SIZE, a, s)
110 #define MOD_METADATA(a, mm) { \
111 COPY32(MODINFO_METADATA | mm->md_type, a); \
112 COPY32(mm->md_size, a); \
113 alpha_copyin(mm->md_data, a, mm->md_size); \
114 a += roundup(mm->md_size, sizeof(u_int64_t));\
117 #define MOD_END(a) { \
118 COPY32(MODINFO_END, a); \
123 bi_copymodules(vm_offset_t addr)
125 struct loaded_module *mp;
126 struct module_metadata *md;
128 /* start with the first module on the list, should be the kernel */
129 for (mp = mod_findmodule(NULL, NULL); mp != NULL; mp = mp->m_next) {
131 MOD_NAME(addr, mp->m_name); /* this field must come first */
132 MOD_TYPE(addr, mp->m_type);
133 MOD_ADDR(addr, mp->m_addr);
134 MOD_SIZE(addr, mp->m_size);
135 for (md = mp->m_metadata; md != NULL; md = md->md_next)
136 if (!(md->md_type & MODINFOMD_NOCOPY))
137 MOD_METADATA(addr, md);
144 * Load the information expected by an alpha kernel.
146 * - The kernel environment is copied into kernel space.
147 * - Module metadata are formatted and placed in kernel space.
150 bi_load(struct bootinfo_v1 *bi, vm_offset_t *ffp_save,
151 struct loaded_module *mp)
153 struct loaded_module *xp;
154 vm_offset_t addr, bootinfo_addr;
156 vm_offset_t ssym, esym;
157 struct module_metadata *md;
160 if ((md = mod_findmetadata(mp, MODINFOMD_SSYM)) != NULL)
161 ssym = *((vm_offset_t *)&(md->md_data));
162 if ((md = mod_findmetadata(mp, MODINFOMD_ESYM)) != NULL)
163 esym = *((vm_offset_t *)&(md->md_data));
164 if (ssym == 0 || esym == 0)
165 ssym = esym = 0; /* sanity */
170 /* find the last module in the chain */
172 for (xp = mod_findmodule(NULL, NULL); xp != NULL; xp = xp->m_next) {
173 if (addr < (xp->m_addr + xp->m_size))
174 addr = xp->m_addr + xp->m_size;
176 /* pad to a page boundary */
177 pad = (u_int)addr & PAGE_MASK;
179 pad = PAGE_SIZE - pad;
183 /* copy our environment */
184 bi->envp = (char *)addr;
185 addr = bi_copyenv(addr);
187 /* pad to a page boundary */
188 pad = (u_int)addr & PAGE_MASK;
190 pad = PAGE_SIZE - pad;
193 /* copy module list and metadata */
195 addr = bi_copymodules(addr);
197 /* all done copying stuff in, save end of loaded object space */
200 *ffp_save = ALPHA_K0SEG_TO_PHYS((addr + PAGE_MASK) & ~PAGE_MASK)
202 *ffp_save += 2; /* XXX OSF/1 does this, no idea why. */