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
30extern int lv1_panic(u64 in_1);
31extern int lv1_get_logical_partition_id(u64 *out_1);
32extern int lv1_get_logical_ppe_id(u64 *out_1);
33extern 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
39static inline int __attribute__ ((format (printf, 1, 2))) DBG(
40	const char *fmt, ...) {return 0;}
41#endif
42
43BSS_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
50static char cmdline[BOOT_COMMAND_LINE_SIZE]
51	__attribute__((__section__("__builtin_cmdline")));
52
53static void prep_cmdline(void *chosen)
54{
55	if (cmdline[0] == '\0')
56		getprop(chosen, "bootargs", cmdline, BOOT_COMMAND_LINE_SIZE-1);
57	else
58		setprop_str(chosen, "bootargs", cmdline);
59
60	printf("cmdline: '%s'\n", cmdline);
61}
62
63static void ps3_console_write(const char *buf, int len)
64{
65}
66
67static 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
77static 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
114void 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
122void 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