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
|
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
* Nick Kossifidis <mick@ics.forth.gr>
*/
#include <sbi/riscv_asm.h>
#include <sbi/sbi_bitops.h>
#include <sbi/sbi_hart.h>
#include <sbi/sbi_hsm.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_system.h>
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_init.h>
int sbi_system_early_init(struct sbi_scratch *scratch, bool cold_boot)
{
return sbi_platform_early_init(sbi_platform_ptr(scratch), cold_boot);
}
int sbi_system_final_init(struct sbi_scratch *scratch, bool cold_boot)
{
return sbi_platform_final_init(sbi_platform_ptr(scratch), cold_boot);
}
void sbi_system_early_exit(struct sbi_scratch *scratch)
{
sbi_platform_early_exit(sbi_platform_ptr(scratch));
}
void sbi_system_final_exit(struct sbi_scratch *scratch)
{
sbi_platform_final_exit(sbi_platform_ptr(scratch));
}
void __noreturn sbi_system_reboot(struct sbi_scratch *scratch, u32 type)
{
ulong hbase = 0, hmask;
u32 cur_hartid = current_hartid();
/* Send HALT IPI to every hart other than the current hart */
while (!sbi_hsm_hart_started_mask(hbase, &hmask)) {
if (hbase <= cur_hartid)
hmask &= ~(1UL << (cur_hartid - hbase));
if (hmask)
sbi_ipi_send_halt(scratch, hmask, hbase);
hbase += BITS_PER_LONG;
}
/* Stop current HART */
sbi_hsm_hart_stop(scratch, FALSE);
/* Platform specific reooot */
sbi_platform_system_reboot(sbi_platform_ptr(scratch), type);
/* If platform specific reboot did not work then do sbi_exit() */
sbi_exit(scratch);
}
void __noreturn sbi_system_shutdown(struct sbi_scratch *scratch, u32 type)
{
ulong hbase = 0, hmask;
u32 cur_hartid = current_hartid();
/* Send HALT IPI to every hart other than the current hart */
while (!sbi_hsm_hart_started_mask(hbase, &hmask)) {
if (hbase <= cur_hartid)
hmask &= ~(1UL << (cur_hartid - hbase));
if (hmask)
sbi_ipi_send_halt(scratch, hmask, hbase);
hbase += BITS_PER_LONG;
}
/* Stop current HART */
sbi_hsm_hart_stop(scratch, FALSE);
/* Platform specific shutdown */
sbi_platform_system_shutdown(sbi_platform_ptr(scratch), type);
/* If platform specific shutdown did not work then do sbi_exit() */
sbi_exit(scratch);
}
|
