usb-redir: convert to QOM
[qemu.git] / pc-bios / optionrom / optionrom.h
1 /*
2 * Common Option ROM Functions
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 *
17 * Copyright Novell Inc, 2009
18 * Authors: Alexander Graf <agraf@suse.de>
19 */
20
21
22 #define NO_QEMU_PROTOS
23 #include "../../hw/fw_cfg.h"
24
25 #define BIOS_CFG_IOPORT_CFG 0x510
26 #define BIOS_CFG_IOPORT_DATA 0x511
27
28 /* Break the translation block flow so -d cpu shows us values */
29 #define DEBUG_HERE \
30 jmp 1f; \
31 1:
32
33 /*
34 * Read a variable from the fw_cfg device.
35 * Clobbers: %edx
36 * Out: %eax
37 */
38 .macro read_fw VAR
39 mov $\VAR, %ax
40 mov $BIOS_CFG_IOPORT_CFG, %dx
41 outw %ax, (%dx)
42 mov $BIOS_CFG_IOPORT_DATA, %dx
43 inb (%dx), %al
44 shl $8, %eax
45 inb (%dx), %al
46 shl $8, %eax
47 inb (%dx), %al
48 shl $8, %eax
49 inb (%dx), %al
50 bswap %eax
51 .endm
52
53 #define read_fw_blob_pre(var) \
54 read_fw var ## _ADDR; \
55 mov %eax, %edi; \
56 read_fw var ## _SIZE; \
57 mov %eax, %ecx; \
58 mov $var ## _DATA, %ax; \
59 mov $BIOS_CFG_IOPORT_CFG, %edx; \
60 outw %ax, (%dx); \
61 mov $BIOS_CFG_IOPORT_DATA, %dx; \
62 cld
63
64 /*
65 * Read a blob from the fw_cfg device.
66 * Requires _ADDR, _SIZE and _DATA values for the parameter.
67 *
68 * Clobbers: %eax, %edx, %es, %ecx, %edi
69 */
70 #define read_fw_blob(var) \
71 read_fw_blob_pre(var); \
72 /* old as(1) doesn't like this insn so emit the bytes instead: \
73 rep insb (%dx), %es:(%edi); \
74 */ \
75 .dc.b 0xf3,0x6c
76
77 /*
78 * Read a blob from the fw_cfg device in forced addr32 mode.
79 * Requires _ADDR, _SIZE and _DATA values for the parameter.
80 *
81 * Clobbers: %eax, %edx, %es, %ecx, %edi
82 */
83 #define read_fw_blob_addr32(var) \
84 read_fw_blob_pre(var); \
85 /* old as(1) doesn't like this insn so emit the bytes instead: \
86 addr32 rep insb (%dx), %es:(%edi); \
87 */ \
88 .dc.b 0x67,0xf3,0x6c
89
90 #define OPTION_ROM_START \
91 .code16; \
92 .text; \
93 .global _start; \
94 _start:; \
95 .short 0xaa55; \
96 .byte (_end - _start) / 512;
97
98 #define BOOT_ROM_START \
99 OPTION_ROM_START \
100 lret; \
101 .org 0x18; \
102 .short 0; \
103 .short _pnph; \
104 _pnph: \
105 .ascii "$PnP"; \
106 .byte 0x01; \
107 .byte ( _pnph_len / 16 ); \
108 .short 0x0000; \
109 .byte 0x00; \
110 .byte 0x00; \
111 .long 0x00000000; \
112 .short _manufacturer; \
113 .short _product; \
114 .long 0x00000000; \
115 .short 0x0000; \
116 .short 0x0000; \
117 .short _bev; \
118 .short 0x0000; \
119 .short 0x0000; \
120 .equ _pnph_len, . - _pnph; \
121 _bev:; \
122 /* DS = CS */ \
123 movw %cs, %ax; \
124 movw %ax, %ds;
125
126 #define OPTION_ROM_END \
127 .align 512, 0; \
128 _end:
129
130 #define BOOT_ROM_END \
131 _manufacturer:; \
132 .asciz "QEMU"; \
133 _product:; \
134 .asciz BOOT_ROM_PRODUCT; \
135 OPTION_ROM_END
136