aarch64 - Decode CPU brand information

This commit is contained in:
kd-11 2024-08-23 01:52:59 +03:00 committed by kd-11
parent 1c16ada670
commit f5173ca9bf
4 changed files with 211 additions and 5 deletions

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@ -392,6 +392,7 @@ target_sources(rpcs3_emu PRIVATE
if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64|aarch64")
target_sources(rpcs3_emu PRIVATE
CPU/Backends/AArch64/AArch64ASM.cpp
CPU/Backends/AArch64/AArch64Common.cpp
CPU/Backends/AArch64/AArch64JIT.cpp
CPU/Backends/AArch64/AArch64Signal.cpp
)

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@ -0,0 +1,197 @@
#include "stdafx.h"
#include "AArch64Common.h"
#include <thread>
#include <map>
namespace aarch64
{
struct cpu_entry_t
{
u32 vendor;
u32 part;
const char* arch;
const char* family;
const char* name;
};
struct cpu_vendor_t
{
u32 id;
const char* name;
const char* short_name;
};
static cpu_vendor_t s_vendors_list[] =
{
{ 0x41, "Arm Limited.", "ARM" },
{ 0x42, "Broadcom Corporation.", "Broadcom" },
{ 0x43, "Cavium Inc.", "Cavium" },
{ 0x44, "Digital Equipment Corporation.", "DEC" },
{ 0x46, "Fujitsu Ltd.", "Fujitsu" },
{ 0x49, "Infineon Technologies AG.", "Infineon" },
{ 0x4D, "Motorola or Freescale Semiconductor Inc.", "Motorola" },
{ 0x4E, "NVIDIA Corporation.", "NVIDIA" },
{ 0x50, "Applied Micro Circuits Corporation.", "AMCC" },
{ 0x51, "Qualcomm Inc.", "Qualcomm" },
{ 0x56, "Marvell International Ltd.", "Marvell" },
{ 0x69, "Intel Corporation.", "Intel" },
{ 0xC0, "Ampere Computing", "Ampere" },
// Unofficial but existing in the wild
{ 0x61, "Apple Inc.", "Apple" },
};
static cpu_entry_t s_cpu_list[] =
{
// ARM
{ 0x41, 0xd01, "armv8-a+crc+simd", "", "Cortex-A32" },
{ 0x41, 0xd04, "armv8-a+crc+simd", "", "Cortex-A35" },
{ 0x41, 0xd03, "armv8-a+crc+simd", "", "Cortex-A53" },
{ 0x41, 0xd07, "armv8-a+crc+simd", "", "Cortex-A57" },
{ 0x41, 0xd08, "armv8-a+crc+simd", "", "Cortex-A72" },
{ 0x41, 0xd09, "armv8-a+crc+simd", "", "Cortex-A73" },
{ 0x41, 0xd05, "armv8.2-a+fp16+dotprod", "", "Cortex-A55" },
{ 0x41, 0xd0a, "armv8.2-a+fp16+dotprod", "", "Cortex-A75" },
{ 0x41, 0xd0b, "armv8.2-a+fp16+dotprod", "", "Cortex-A76" },
{ 0x41, 0xd0e, "armv8.2-a+fp16+dotprod", "", "Cortex-A76ae" },
{ 0x41, 0xd0d, "armv8.2-a+fp16+dotprod", "", "Cortex-A77" },
{ 0x41, 0xd41, "armv8.2-a+fp16+dotprod", "", "Cortex-A78" },
{ 0x41, 0xd42, "armv8.2-a+fp16+dotprod", "", "Cortex-A78ae" },
{ 0x41, 0xd4b, "armv8.2-a+fp16+dotprod", "", "Cortex-A78c" },
{ 0x41, 0xd47, "armv9-a+fp16+bf16+i8mm", "", "Cortex-A710" },
{ 0x41, 0xd44, "armv8.2-a+fp16+dotprod", "", "Cortex-X1" },
{ 0x41, 0xd4c, "armv8.2-a+fp16+dotprod", "", "Cortex-X1c" },
{ 0x41, 0xd0c, "armv8.2-a+fp16+dotprod", "", "Neoverse-N1" },
{ 0x41, 0xd40, "armv8.4-a+fp16+bf16+i8mm", "", "Neoverse-V1" },
{ 0x41, 0xd49, "armv8.5-a+fp16+bf16+i8mm", "", "Neoverse-N2" },
{ 0x41, 0xd23, "armv8.1-m.main+pacbti+mve.fp+fp.dp", "", "Cortex-M85" },
{ 0x41, 0xd13, "armv8-r+crc+simd", "", "Cortex-R52" },
{ 0x41, 0xd16, "armv8-r+crc+simd", "", "Cortex-R52+" },
// APPLE
{ 0x61, 0x22, "armv8.5-a", "M1", "Firestorm" },
{ 0x61, 0x23, "armv8.5-a", "M1", "IceStorm" },
{ 0x61, 0x28, "armv8.5-a", "M1 Max", "Firestorm" },
{ 0x61, 0x28, "armv8.5-a", "M1 Max", "Icestorm" },
{ 0x61, 0x24, "armv8.5-a", "M1 Pro", "Firestorm" },
{ 0x61, 0x25, "armv8.5-a", "M1 Pro", "Icestorm" },
{ 0x61, 0x32, "armv8.5-a", "M2", "Avalanche" },
{ 0x61, 0x32, "armv8.5-a", "M2", "Blizzard" },
// QUALCOMM
{ 0x51, 0x01, "armv8.5-a", "Snapdragon", "X-Elite" },
};
static const cpu_vendor_t* find_cpu_vendor(u64 id)
{
for (const auto& vendor : s_vendors_list)
{
if (id == vendor.id)
{
return &vendor;
}
}
return nullptr;
}
static const cpu_entry_t* find_cpu_part(u64 vendor, u64 part)
{
for (const auto& cpu : s_cpu_list)
{
if (cpu.vendor == vendor && cpu.part == part)
{
return &cpu;
}
}
return nullptr;
}
// Read main ID register
static u64 read_MIDR_EL1(u32 cpu_id)
{
#if defined(__linux__)
std::string path = fmt::format("/sys/devices/system/cpu/cpu%u/regs/identification/midr_el1", cpu_id);
if (!fs::is_file(path))
{
return umax;
}
std::string value;
if (!fs::file(path, fs::read).read(value, 18))
{
return 0;
}
return std::stoull(value, nullptr, 16);
#else
// Unimplemented
return 0;
#endif
}
std::string get_cpu_brand()
{
// Fetch vendor and part numbers. ARM CPUs often have more than 1 architecture on the SoC, so we check all of them.
std::map<u64, int> core_layout;
for (u32 i = 0; i < std::thread::hardware_concurrency(); ++i)
{
const auto midr = read_MIDR_EL1(i);
if (midr == umax)
{
break;
}
core_layout[midr]++;
}
if (core_layout.empty())
{
return "Unidentified CPU";
}
std::string vendor_name;
std::string part_family;
std::vector<std::string> core_names;
for (const auto& [midr, count] : core_layout)
{
const auto implementer_id = (midr >> 24) & 0xff;
const auto part_id = (midr >> 4) & 0xfff;
if (vendor_name.empty())
{
const auto vendor_info = find_cpu_vendor(implementer_id);
vendor_name = vendor_info ? vendor_info->short_name : "Unknown";
}
const auto part_info = find_cpu_part(implementer_id, part_id);
if (!part_info)
{
core_names.push_back(fmt::format("%dx\"Unidentified cores\"", count));
continue;
}
if (part_family.empty() && part_info->family)
{
part_family = part_info->family;
}
core_names.push_back(fmt::format("%dx\"%s\"", count, part_info->name));
}
// Assemble everything
std::string result = vendor_name + " ";
std::string suffix;
if (!part_family.empty())
{
// Since we have a known family name, the core layout is just extra info.
// Wrap core layout in brackets.
result += part_family + " (";
suffix = ")";
}
result += fmt::merge(core_names, " + ");
result += suffix;
return result;
}
}

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@ -36,4 +36,6 @@ namespace aarch64
{
"xzr", ".", "sp"
};
std::string get_cpu_brand();
}

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@ -4,6 +4,10 @@
#include "Emu/vfs_config.h"
#include "Utilities/Thread.h"
#if defined(ARCH_ARM64)
#include "Emu/CPU/Backends/AArch64/AArch64Common.h"
#endif
#ifdef _WIN32
#include "windows.h"
#include "sysinfoapi.h"
@ -387,9 +391,8 @@ u32 utils::get_rep_movsb_threshold()
std::string utils::get_cpu_brand()
{
std::string brand;
#if defined(ARCH_X64)
std::string brand;
if (get_cpuid(0x80000000, 0)[0] >= 0x80000004)
{
for (u32 i = 0; i < 3; i++)
@ -401,9 +404,6 @@ std::string utils::get_cpu_brand()
{
brand = "Unknown CPU";
}
#else
brand = "Unidentified CPU";
#endif
brand.erase(brand.find_last_not_of('\0') + 1);
brand.erase(brand.find_last_not_of(' ') + 1);
@ -415,6 +415,12 @@ std::string utils::get_cpu_brand()
}
return brand;
#elif defined(ARCH_ARM64)
static const auto g_cpu_brand = aarch64::get_cpu_brand();
return g_cpu_brand;
#else
return "Unidentified CPU";
#endif
}
std::string utils::get_system_info()