1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/* -*-Asm-*- */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/machine/boot.h>
#include <grub/offsets.h>
.text
.align 4
.globl _start
_start:
/* First stage boot block jumps to us here. */
pic_base:
call after_info_block
mov %o7, PIC_REG
prom_write_name: .asciz "write"
prom_seek_name: .asciz "seek"
prom_read_name: .asciz "read"
prom_close_name: .asciz "close"
notification_string: .asciz "Loading kernel"
#define NOTIFICATION_STRING_LEN 14
notification_step: .asciz "."
#define NOTIFICATION_STEP_LEN 1
notification_done: .asciz "\r\n"
#define NOTIFICATION_DONE_LEN 2
.align 4
/* %o2: message string
* %o3: message length
*/
console_write:
GET_ABS(prom_write_name, %o0)
mov STDOUT_NODE_REG, %o1
/* fallthru */
/* %o0: OF call name
* %o1: input arg 1
* %o2: input arg 2
* %o3: input arg 3
*/
prom_call_3_1:
mov 3, %g1
mov 1, %o5
/* fallthru */
/* %o0: OF call name
* %g1: num inputs
* %o5: num outputs
* %o1-%o4: inputs
*/
prom_call:
stx %o0, [%l1 + 0x00]
stx %g1, [%l1 + 0x08]
stx %o5, [%l1 + 0x10]
stx %o1, [%l1 + 0x18]
stx %o2, [%l1 + 0x20]
stx %o3, [%l1 + 0x28]
stx %o4, [%l1 + 0x30]
jmpl CIF_REG, %g0
mov %l1, %o0
after_info_block:
sethi %hi(SCRATCH_PAD_DISKBOOT), %l1 /* OF argument slots */
GET_ABS(notification_string, %o2)
call console_write
mov NOTIFICATION_STRING_LEN, %o3
GET_ABS(firstlist - GRUB_BOOT_SPARC64_IEEE1275_LIST_SIZE, %l2)
set GRUB_BOOT_SPARC64_IEEE1275_IMAGE_ADDRESS, %l3
bootloop:
lduw [%l2 + 0x08], %o0
brz %o0, bootit
lduw [%l2 + 0x00], %o3
sllx %o3, 32, %o3
lduw [%l2 + 0x04], %o4
or %o3, %o4, %o3
GET_ABS(prom_seek_name, %o0)
mov BOOTDEV_REG, %o1
clr %o2
call prom_call_3_1
sllx %o3, 9, %o3
GET_ABS(prom_read_name, %o0)
mov BOOTDEV_REG, %o1
lduw [%l2 + 0x08], %o3
sllx %o3, 9, %o3
mov %l3, %o2
call prom_call_3_1
add %l3, %o3, %l3
GET_ABS(notification_step, %o2)
call console_write
mov NOTIFICATION_STEP_LEN, %o3
ba bootloop
sub %l2, GRUB_BOOT_SPARC64_IEEE1275_LIST_SIZE, %l2
bootit:
GET_ABS(prom_close_name, %o0)
mov 1, %g1
mov 0, %o5
call prom_call
mov BOOTDEV_REG, %o1
GET_ABS(notification_done, %o2)
call console_write
mov NOTIFICATION_DONE_LEN, %o3
sethi %hi(GRUB_BOOT_SPARC64_IEEE1275_IMAGE_ADDRESS), %o2
jmpl %o2 + %lo(GRUB_BOOT_SPARC64_IEEE1275_IMAGE_ADDRESS), %o7
mov CIF_REG, %o4
1: ba,a 1b
lastlist:
.word 0
.word 0
.org (0x200 - GRUB_BOOT_SPARC64_IEEE1275_LIST_SIZE)
blocklist_default_start:
.word 0
.word 2
blocklist_default_len:
.word 0
firstlist:
|
