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
|
/*
* Copyright (c) 2018 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <sbi/riscv_asm.h>
#include <sbi/riscv_atomic.h>
#include <sbi/sbi_console.h>
#include <sbi/sbi_ecall.h>
#include <sbi/sbi_hart.h>
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_system.h>
#include <sbi/sbi_timer.h>
static void __attribute__((noreturn)) init_coldboot(struct sbi_scratch *scratch,
u32 hartid)
{
int rc;
char str[64];
struct sbi_platform *plat = sbi_platform_ptr(scratch);
rc = sbi_system_cold_early_init(scratch);
if (rc)
sbi_hart_hang();
rc = sbi_system_warm_early_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_hart_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_console_init(scratch);
if (rc)
sbi_hart_hang();
rc = sbi_platform_cold_irqchip_init(plat);
if (rc)
sbi_hart_hang();
rc = sbi_platform_warm_irqchip_init(plat, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_ipi_cold_init(scratch);
if (rc)
sbi_hart_hang();
rc = sbi_ipi_warm_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_timer_cold_init(scratch);
if (rc)
sbi_hart_hang();
rc = sbi_timer_warm_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_system_cold_final_init(scratch);
if (rc)
sbi_hart_hang();
rc = sbi_system_warm_final_init(scratch, hartid);
if (rc)
sbi_hart_hang();
misa_string(str, sizeof(str));
sbi_printf("OpenSBI v%d.%d (%s %s)\n",
OPENSBI_MAJOR, OPENSBI_MINOR,
__DATE__, __TIME__);
sbi_printf("\n");
/* Platform details */
sbi_printf("Platform Name : %s\n", sbi_platform_name(plat));
sbi_printf("Platform HART Features : RV%d%s\n", misa_xlen(), str);
sbi_printf("Platform Max HARTs : %d\n",
sbi_platform_hart_count(plat));
/* Firmware details */
sbi_printf("Firmware Base : 0x%lx\n", scratch->fw_start);
sbi_printf("Firmware Size : %d KB\n",
(u32)(scratch->fw_size / 1024));
/* Generic details */
sbi_printf("Runtime SBI Version : %d.%d\n",
sbi_ecall_version_major(), sbi_ecall_version_minor());
sbi_printf("\n");
sbi_hart_pmp_dump();
sbi_hart_mark_available(hartid);
if (!sbi_platform_has_hart_hotplug(plat))
sbi_hart_wake_coldboot_harts(scratch);
sbi_hart_boot_next(hartid, scratch->next_arg1,
scratch->next_addr, scratch->next_mode);
}
static void __attribute__((noreturn)) init_warmboot(struct sbi_scratch *scratch,
u32 hartid)
{
int rc;
struct sbi_platform *plat = sbi_platform_ptr(scratch);
if (!sbi_platform_has_hart_hotplug(plat))
sbi_hart_wait_for_coldboot(scratch, hartid);
rc = sbi_system_warm_early_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_hart_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_platform_warm_irqchip_init(plat, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_ipi_warm_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_timer_warm_init(scratch, hartid);
if (rc)
sbi_hart_hang();
rc = sbi_system_warm_final_init(scratch, hartid);
if (rc)
sbi_hart_hang();
sbi_hart_mark_available(hartid);
if (sbi_platform_has_hart_hotplug(plat))
/* TODO: To be implemented in-future. */
sbi_hart_hang();
else
sbi_hart_boot_next(hartid, scratch->next_arg1,
scratch->next_addr, scratch->next_mode);
}
static atomic_t coldboot_lottery = ATOMIC_INITIALIZER(0);
void __attribute__((noreturn)) sbi_init(struct sbi_scratch *scratch)
{
bool coldboot = FALSE;
u32 hartid = csr_read(mhartid);
if (atomic_add_return(&coldboot_lottery, 1) == 1)
coldboot = TRUE;
if (coldboot)
init_coldboot(scratch, hartid);
else
init_warmboot(scratch, hartid);
}
|
