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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* The 'sbi' command displays information about the SBI implementation.
*
* Copyright (c) 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
*/
#include <common.h>
#include <command.h>
#include <asm/sbi.h>
struct sbi_ext {
const u32 id;
const char *name;
};
static struct sbi_ext extensions[] = {
{ 0x00000000, "sbi_set_timer" },
{ 0x00000001, "sbi_console_putchar" },
{ 0x00000002, "sbi_console_getchar" },
{ 0x00000003, "sbi_clear_ipi" },
{ 0x00000004, "sbi_send_ipi" },
{ 0x00000005, "sbi_remote_fence_i" },
{ 0x00000006, "sbi_remote_sfence_vma" },
{ 0x00000007, "sbi_remote_sfence_vma_asid" },
{ 0x00000008, "sbi_shutdown" },
{ 0x00000010, "SBI Base Functionality" },
{ 0x54494D45, "Timer Extension" },
{ 0x00735049, "IPI Extension" },
{ 0x52464E43, "RFENCE Extension" },
{ 0x0048534D, "Hart State Management Extension" },
};
static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
int i;
long ret;
ret = sbi_get_spec_version();
if (ret >= 0)
printf("SBI %ld.%ld\n", ret >> 24, ret & 0xffffff);
ret = sbi_get_impl_id();
if (ret >= 0) {
switch (ret) {
case 0:
printf("Berkeley Boot Loader (BBL)\n");
break;
case 1:
printf("OpenSBI\n");
break;
case 2:
printf("Xvisor\n");
break;
case 3:
printf("KVM\n");
break;
default:
printf("Unknown implementation\n");
break;
}
}
printf("Extensions:\n");
for (i = 0; i < ARRAY_SIZE(extensions); ++i) {
ret = sbi_probe_extension(extensions[i].id);
if (ret > 0)
printf(" %s\n", extensions[i].name);
}
return 0;
}
#ifdef CONFIG_SYS_LONGHELP
static char sbi_help_text[] =
"- display SBI spec version, implementation, and available extensions";
#endif
U_BOOT_CMD_COMPLETE(
sbi, 1, 0, do_sbi,
"display SBI information",
sbi_help_text, NULL
);
|
