1 /*
2 * PS3 bootwrapper support.
3 *
4 * Copyright (C) 2007 Sony Computer Entertainment Inc.
5 * Copyright 2007 Sony Corp.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <stdarg.h>
22 #include <stddef.h>
23 #include "types.h"
24 #include "elf.h"
25 #include "string.h"
26 #include "stdio.h"
27 #include "page.h"
28 #include "ops.h"
29
30 extern int lv1_panic(u64 in_1);
31 extern int lv1_get_logical_partition_id(u64 *out_1);
32 extern int lv1_get_logical_ppe_id(u64 *out_1);
33 extern int lv1_get_repository_node_value(u64 in_1, u64 in_2, u64 in_3,
34 u64 in_4, u64 in_5, u64 *out_1, u64 *out_2);
35
36 #ifdef DEBUG
37 #define DBG(fmt...) printf(fmt)
38 #else
DBG(const char * fmt,...)39 static inline int __attribute__ ((format (printf, 1, 2))) DBG(
40 const char *fmt, ...) {return 0;}
41 #endif
42
43 BSS_STACK(4096);
44
45 /* A buffer that may be edited by tools operating on a zImage binary so as to
46 * edit the command line passed to vmlinux (by setting /chosen/bootargs).
47 * The buffer is put in it's own section so that tools may locate it easier.
48 */
49
50 static char cmdline[COMMAND_LINE_SIZE]
51 __attribute__((__section__("__builtin_cmdline")));
52
prep_cmdline(void * chosen)53 static void prep_cmdline(void *chosen)
54 {
55 if (cmdline[0] == '\0')
56 getprop(chosen, "bootargs", cmdline, COMMAND_LINE_SIZE-1);
57 else
58 setprop_str(chosen, "bootargs", cmdline);
59
60 printf("cmdline: '%s'\n", cmdline);
61 }
62
ps3_console_write(const char * buf,int len)63 static void ps3_console_write(const char *buf, int len)
64 {
65 }
66
ps3_exit(void)67 static void ps3_exit(void)
68 {
69 printf("ps3_exit\n");
70
71 /* lv1_panic will shutdown the lpar. */
72
73 lv1_panic(0); /* zero = do not reboot */
74 while (1);
75 }
76
ps3_repository_read_rm_size(u64 * rm_size)77 static int ps3_repository_read_rm_size(u64 *rm_size)
78 {
79 int result;
80 u64 lpar_id;
81 u64 ppe_id;
82 u64 v2;
83
84 result = lv1_get_logical_partition_id(&lpar_id);
85
86 if (result)
87 return -1;
88
89 result = lv1_get_logical_ppe_id(&ppe_id);
90
91 if (result)
92 return -1;
93
94 /*
95 * n1: 0000000062690000 : ....bi..
96 * n2: 7075000000000000 : pu......
97 * n3: 0000000000000001 : ........
98 * n4: 726d5f73697a6500 : rm_size.
99 */
100
101 result = lv1_get_repository_node_value(lpar_id, 0x0000000062690000ULL,
102 0x7075000000000000ULL, ppe_id, 0x726d5f73697a6500ULL, rm_size,
103 &v2);
104
105 printf("%s:%d: ppe_id %lu \n", __func__, __LINE__,
106 (unsigned long)ppe_id);
107 printf("%s:%d: lpar_id %lu \n", __func__, __LINE__,
108 (unsigned long)lpar_id);
109 printf("%s:%d: rm_size %llxh \n", __func__, __LINE__, *rm_size);
110
111 return result ? -1 : 0;
112 }
113
ps3_copy_vectors(void)114 void ps3_copy_vectors(void)
115 {
116 extern char __system_reset_kernel[];
117
118 memcpy((void *)0x100, __system_reset_kernel, 512);
119 flush_cache((void *)0x100, 512);
120 }
121
platform_init(unsigned long null_check)122 void platform_init(unsigned long null_check)
123 {
124 const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */
125 void *chosen;
126 unsigned long ft_addr;
127 u64 rm_size;
128 unsigned long val;
129
130 console_ops.write = ps3_console_write;
131 platform_ops.exit = ps3_exit;
132
133 printf("\n-- PS3 bootwrapper --\n");
134
135 simple_alloc_init(_end, heapsize, 32, 64);
136 fdt_init(_dtb_start);
137
138 chosen = finddevice("/chosen");
139
140 ps3_repository_read_rm_size(&rm_size);
141 dt_fixup_memory(0, rm_size);
142
143 if (_initrd_end > _initrd_start) {
144 setprop_val(chosen, "linux,initrd-start", (u32)(_initrd_start));
145 setprop_val(chosen, "linux,initrd-end", (u32)(_initrd_end));
146 }
147
148 prep_cmdline(chosen);
149
150 ft_addr = dt_ops.finalize();
151
152 ps3_copy_vectors();
153
154 printf(" flat tree at 0x%lx\n\r", ft_addr);
155
156 val = *(unsigned long *)0;
157
158 if (val != null_check)
159 printf("null check failed: %lx != %lx\n\r", val, null_check);
160
161 ((kernel_entry_t)0)(ft_addr, 0, NULL);
162
163 ps3_exit();
164 }
165