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
|
/*
* Arm specific proc functions for linux-user
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef ARM_TARGET_PROC_H
#define ARM_TARGET_PROC_H
static int open_cpuinfo(CPUArchState *cpu_env, int fd)
{
ARMCPU *cpu = env_archcpu(cpu_env);
int arch, midr_rev, midr_part, midr_var, midr_impl;
target_ulong elf_hwcap = get_elf_hwcap();
target_ulong elf_hwcap2 = get_elf_hwcap2();
const char *elf_name;
int num_cpus, len_part, len_var;
#if TARGET_BIG_ENDIAN
# define END_SUFFIX "b"
#else
# define END_SUFFIX "l"
#endif
arch = 8;
elf_name = "v8" END_SUFFIX;
midr_rev = FIELD_EX32(cpu->midr, MIDR_EL1, REVISION);
midr_part = FIELD_EX32(cpu->midr, MIDR_EL1, PARTNUM);
midr_var = FIELD_EX32(cpu->midr, MIDR_EL1, VARIANT);
midr_impl = FIELD_EX32(cpu->midr, MIDR_EL1, IMPLEMENTER);
len_part = 3;
len_var = 1;
#ifndef TARGET_AARCH64
/* For simplicity, treat ARMv8 as an arm64 kernel with CONFIG_COMPAT. */
if (!arm_feature(&cpu->env, ARM_FEATURE_V8)) {
if (arm_feature(&cpu->env, ARM_FEATURE_V7)) {
arch = 7;
midr_var = (cpu->midr >> 16) & 0x7f;
len_var = 2;
if (arm_feature(&cpu->env, ARM_FEATURE_M)) {
elf_name = "armv7m" END_SUFFIX;
} else {
elf_name = "armv7" END_SUFFIX;
}
} else {
midr_part = cpu->midr >> 4;
len_part = 7;
if (arm_feature(&cpu->env, ARM_FEATURE_V6)) {
arch = 6;
elf_name = "armv6" END_SUFFIX;
} else if (arm_feature(&cpu->env, ARM_FEATURE_V5)) {
arch = 5;
elf_name = "armv5t" END_SUFFIX;
} else {
arch = 4;
elf_name = "armv4" END_SUFFIX;
}
}
}
#endif
#undef END_SUFFIX
num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
for (int i = 0; i < num_cpus; i++) {
dprintf(fd,
"processor\t: %d\n"
"model name\t: ARMv%d Processor rev %d (%s)\n"
"BogoMIPS\t: 100.00\n"
"Features\t:",
i, arch, midr_rev, elf_name);
for (target_ulong j = elf_hwcap; j ; j &= j - 1) {
dprintf(fd, " %s", elf_hwcap_str(ctz64(j)));
}
for (target_ulong j = elf_hwcap2; j ; j &= j - 1) {
dprintf(fd, " %s", elf_hwcap2_str(ctz64(j)));
}
dprintf(fd, "\n"
"CPU implementer\t: 0x%02x\n"
"CPU architecture: %d\n"
"CPU variant\t: 0x%0*x\n",
midr_impl, arch, len_var, midr_var);
if (arch >= 7) {
dprintf(fd, "CPU part\t: 0x%0*x\n", len_part, midr_part);
}
dprintf(fd, "CPU revision\t: %d\n\n", midr_rev);
}
if (arch < 8) {
dprintf(fd, "Hardware\t: QEMU v%s %s\n", QEMU_VERSION,
cpu->dtb_compatible ? : "");
dprintf(fd, "Revision\t: 0000\n");
dprintf(fd, "Serial\t\t: 0000000000000000\n");
}
return 0;
}
#define HAVE_ARCH_PROC_CPUINFO
#endif /* ARM_TARGET_PROC_H */
|
