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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __SKIBOOT_H
#define __SKIBOOT_H
#include <compiler.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <bitutils.h>
#include <types.h>
#include <ccan/container_of/container_of.h>
#include <ccan/list/list.h>
#include <ccan/short_types/short_types.h>
#include <ccan/build_assert/build_assert.h>
#include <ccan/array_size/array_size.h>
#include <ccan/endian/endian.h>
#include <ccan/str/str.h>
#include <mem-map.h>
#include <op-panel.h>
#include <platform.h>
/* Special ELF sections */
#define __force_data __section(".force.data")
/* Readonly section start and end. */
extern char __rodata_start[], __rodata_end[];
static inline bool is_rodata(const void *p)
{
return ((const char *)p >= __rodata_start && (const char *)p < __rodata_end);
}
/* Debug descriptor. This structure is pointed to by the word at offset
* 0x80 in the sapphire binary
*/
struct debug_descriptor {
u8 eye_catcher[8]; /* "OPALdbug" */
#define DEBUG_DESC_VERSION 1
u32 version;
u8 console_log_levels; /* high 4 bits in memory,
* low 4 bits driver (e.g. uart). */
u8 reserved1;
u16 reserved2;
u32 reserved[2];
/* Memory console */
u64 memcons_phys;
u32 memcons_tce;
u32 memcons_obuf_tce;
u32 memcons_ibuf_tce;
/* Traces */
u64 trace_mask;
u32 num_traces;
#define DEBUG_DESC_MAX_TRACES 256
u64 trace_phys[DEBUG_DESC_MAX_TRACES];
u32 trace_size[DEBUG_DESC_MAX_TRACES];
u32 trace_tce[DEBUG_DESC_MAX_TRACES];
};
extern struct debug_descriptor debug_descriptor;
/* Console logging */
#define PR_EMERG 0
#define PR_ALERT 1
#define PR_CRIT 2
#define PR_ERR 3
#define PR_WARNING 4
#define PR_NOTICE 5
#define PR_PRINTF PR_NOTICE
#define PR_INFO 6
#define PR_DEBUG 7
#define PR_TRACE 8
#define PR_INSANE 9
void prlog(int log_level, const char* fmt, ...) __attribute__((format (printf, 2, 3)));
#define prerror(fmt...) do { prlog(PR_ERR, fmt); } while(0)
/* Location codes -- at most 80 chars with null termination */
#define LOC_CODE_SIZE 80
enum ipl_state {
ipl_initial = 0x00000000,
ipl_opl_sent = 0x00000001,
ipl_got_continue = 0x00000002,
ipl_got_new_role = 0x00000004,
ipl_got_caps = 0x00000008,
ipl_got_fsp_functional = 0x00000010
};
extern enum ipl_state ipl_state;
/* Processor generation */
enum proc_gen {
proc_gen_unknown,
proc_gen_p7, /* P7 and P7+ */
proc_gen_p8,
};
extern enum proc_gen proc_gen;
/* Boot stack top */
extern void *boot_stack_top;
/* For use by debug code */
extern void backtrace(void);
extern void __backtrace(char *bt_buf, int bt_buf_len);
/* Convert a 4-bit number to a hex char */
extern char tohex(uint8_t nibble);
/* Bit position of the most significant 1-bit (LSB=0, MSB=63) */
static inline int ilog2(unsigned long val)
{
int left_zeros;
asm volatile ("cntlzd %0,%1" : "=r" (left_zeros) : "r" (val));
return 63 - left_zeros;
}
static inline bool is_pow2(unsigned long val)
{
return val == (1ul << ilog2(val));
}
#define lo32(x) ((x) & 0xffffffff)
#define hi32(x) (((x) >> 32) & 0xffffffff)
/* WARNING: _a *MUST* be a power of two */
#define ALIGN_UP(_v, _a) (((_v) + (_a) - 1) & ~((_a) - 1))
#define ALIGN_DOWN(_v, _a) ((_v) & ~((_a) - 1))
/* TCE alignment */
#define TCE_PSIZE 0x1000
#define TCE_MASK 0xfff
/* Not the greatest variants but will do for now ... */
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
/* Clean the stray high bit which the FSP inserts: we only have 52 bits real */
static inline u64 cleanup_addr(u64 addr)
{
return addr & ((1ULL << 52) - 1);
}
/* Start the kernel */
extern void start_kernel(uint64_t entry, void* fdt,
uint64_t mem_top) __noreturn;
extern void start_kernel32(uint64_t entry, void* fdt,
uint64_t mem_top) __noreturn;
extern void start_kernel_secondary(uint64_t entry) __noreturn;
/* Get description of machine from HDAT and create device-tree */
extern void parse_hdat(bool is_opal, uint32_t master_cpu);
/* Root of device tree. */
extern struct dt_node *dt_root;
/* Generated git id. */
extern const char gitid[];
/* Fast reboot support */
extern void fast_reset(void);
extern void __secondary_cpu_entry(void);
extern void load_and_boot_kernel(bool is_reboot);
extern void cleanup_tlb(void);
extern void init_shared_sprs(void);
extern void init_replicated_sprs(void);
/* Various probe routines, to replace with an initcall system */
extern void probe_p5ioc2(void);
extern void probe_p7ioc(void);
extern void probe_phb3(void);
extern void uart_init(bool enable_interrupt);
extern void homer_init(void);
extern void occ_pstates_init(void);
extern void slw_init(void);
extern void occ_fsp_init(void);
/* NVRAM support */
extern void nvram_init(void);
extern void nvram_read_complete(bool success);
/* NVRAM on flash helper */
struct flash_chip;
extern int flash_nvram_init(struct flash_chip *chip, uint32_t start,
uint32_t size);
/* UART stuff */
extern void uart_irq(void);
extern void uart_setup_linux_passthrough(void);
extern void uart_setup_opal_console(void);
/* OCC interrupt */
extern void occ_interrupt(void);
extern void occ_send_dummy_interrupt(void);
/* Flatten device-tree */
extern void *create_dtb(const struct dt_node *root);
/* SLW reinit function for switching core settings */
extern int64_t slw_reinit(uint64_t flags);
/* Fallback fake RTC */
extern void fake_rtc_init(void);
#endif /* __SKIBOOT_H */
|
