3 * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #define OFFS_ES 0 /* 16bit */
28 #define OFFS_GS 2 /* 16bit */
29 #define OFFS_DS 4 /* 16bit */
30 #define OFFS_EDI 6 /* 32bit */
31 #define OFFS_DI 6 /* low 16 bits of EDI */
32 #define OFFS_ESI 10 /* 32bit */
33 #define OFFS_SI 10 /* low 16 bits of ESI */
34 #define OFFS_EBP 14 /* 32bit */
35 #define OFFS_BP 14 /* low 16 bits of EBP */
36 #define OFFS_ESP 18 /* 32bit */
37 #define OFFS_SP 18 /* low 16 bits of ESP */
38 #define OFFS_EBX 22 /* 32bit */
39 #define OFFS_BX 22 /* low 16 bits of EBX */
40 #define OFFS_BL 22 /* low 8 bits of BX */
41 #define OFFS_BH 23 /* high 8 bits of BX */
42 #define OFFS_EDX 26 /* 32bit */
43 #define OFFS_DX 26 /* low 16 bits of EBX */
44 #define OFFS_DL 26 /* low 8 bits of BX */
45 #define OFFS_DH 27 /* high 8 bits of BX */
46 #define OFFS_ECX 30 /* 32bit */
47 #define OFFS_CX 30 /* low 16 bits of EBX */
48 #define OFFS_CL 30 /* low 8 bits of BX */
49 #define OFFS_CH 31 /* high 8 bits of BX */
50 #define OFFS_EAX 34 /* 32bit */
51 #define OFFS_AX 34 /* low 16 bits of EBX */
52 #define OFFS_AL 34 /* low 8 bits of BX */
53 #define OFFS_AH 35 /* high 8 bits of BX */
54 #define OFFS_VECTOR 38 /* 16bit */
55 #define OFFS_IP 40 /* 16bit */
56 #define OFFS_CS 42 /* 16bit */
57 #define OFFS_FLAGS 44 /* 16bit */
59 /* stack at 0x40:0x800 -> 0x800 */
64 * save general registers
66 * save callers stack segment
68 * setup BIOS stackpointer
70 #define MAKE_BIOS_STACK \
85 * restore callers stack segment
86 * restore some segments
87 * restore general registers
89 #define RESTORE_CALLERS_STACK \
99 #define BIOS_DATA ((char *)0x400)
100 #define BIOS_DATA_SIZE 256
101 #define BIOS_BASE ((char *)0xf0000)
102 #define BIOS_CS 0xf000
104 extern ulong __bios_start;
105 extern ulong __bios_size;
107 /* these are defined in a 16bit segment and needs
108 * to be accessed with the RELOC_16_xxxx() macros below
110 extern u16 ram_in_64kb_chunks;
111 extern u16 bios_equipment;
112 extern u8 pci_last_bus;
114 extern void *rm_int00;
115 extern void *rm_int01;
116 extern void *rm_int02;
117 extern void *rm_int03;
118 extern void *rm_int04;
119 extern void *rm_int05;
120 extern void *rm_int06;
121 extern void *rm_int07;
122 extern void *rm_int08;
123 extern void *rm_int09;
124 extern void *rm_int0a;
125 extern void *rm_int0b;
126 extern void *rm_int0c;
127 extern void *rm_int0d;
128 extern void *rm_int0e;
129 extern void *rm_int0f;
130 extern void *rm_int10;
131 extern void *rm_int11;
132 extern void *rm_int12;
133 extern void *rm_int13;
134 extern void *rm_int14;
135 extern void *rm_int15;
136 extern void *rm_int16;
137 extern void *rm_int17;
138 extern void *rm_int18;
139 extern void *rm_int19;
140 extern void *rm_int1a;
141 extern void *rm_int1b;
142 extern void *rm_int1c;
143 extern void *rm_int1d;
144 extern void *rm_int1e;
145 extern void *rm_int1f;
146 extern void *rm_def_int;
148 extern void *realmode_reset;
149 extern void *realmode_pci_bios_call_entry;
151 #define RELOC_16_LONG(seg, off) (*(u32 *)(seg << 4 | (u32)&off))
152 #define RELOC_16_WORD(seg, off) (*(u16 *)(seg << 4 | (u32)&off))
153 #define RELOC_16_BYTE(seg, off) (*(u8 *)(seg << 4 | (u32)&off))
155 #ifdef PCI_BIOS_DEBUG
156 extern u32 num_pci_bios_present;
157 extern u32 num_pci_bios_find_device;
158 extern u32 num_pci_bios_find_class;
159 extern u32 num_pci_bios_generate_special_cycle;
160 extern u32 num_pci_bios_read_cfg_byte;
161 extern u32 num_pci_bios_read_cfg_word;
162 extern u32 num_pci_bios_read_cfg_dword;
163 extern u32 num_pci_bios_write_cfg_byte;
164 extern u32 num_pci_bios_write_cfg_word;
165 extern u32 num_pci_bios_write_cfg_dword;
166 extern u32 num_pci_bios_get_irq_routing;
167 extern u32 num_pci_bios_set_irq;
168 extern u32 num_pci_bios_unknown_function;