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🆕 创建了acpi模块

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This commit is contained in:
fslongjin 2022-03-13 00:31:46 +08:00
parent 574f323284
commit e64be7b4df
7 changed files with 280 additions and 17 deletions
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3
README.md
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@ -10,8 +10,9 @@
GCC>=8.0
bochs==2.7
qemu==6.2
grub==2.06
## 如何运行？

11
kernel/Makefile
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@ -20,10 +20,10 @@ all: kernel
# cp kernel ../bin/kernel/kernel.elf
kernel: head.o entry.o main.o printk.o trap.o mm.o slab.o irq.o pic.o process.o syscall.o multiboot2.o cpu.o
kernel: head.o entry.o main.o printk.o trap.o mm.o slab.o irq.o pic.o process.o syscall.o multiboot2.o cpu.o acpi.o
ld -b elf64-x86-64 -z muldefs -o kernel head.o exception/entry.o main.o common/printk.o exception/trap.o exception/irq.o mm/mm.o mm/slab.o process/process.o syscall/syscall.o driver/multiboot2/multiboot2.o \
common/cpu.o \
driver/interrupt/pic.o \
driver/acpi/acpi.o driver/interrupt/pic.o \
-T link.lds
head.o: head.S
@ -72,10 +72,10 @@ cpu.o: common/cpu.c
# 驱动程序
# 中断处理芯片的驱动程序
ifeq ($(PIC), _INTR_8259A_))
ifeq ($(PIC), _INTR_8259A_)
pic.o: driver/interrupt/8259A/8259A.c
gcc $(CFLAGS) -c driver/interrupt/8259A/8259A.c -o driver/interrupt/pic.o
else ifeq($(PIC), _INTR_APIC_)
else
pic.o: driver/interrupt/apic/apic.c
gcc $(CFLAGS) -c driver/interrupt/apic/apic.c -o driver/interrupt/pic.o
endif
@ -83,5 +83,8 @@ endif
multiboot2.o: driver/multiboot2/multiboot2.c
gcc $(CFLAGS) -c driver/multiboot2/multiboot2.c -o driver/multiboot2/multiboot2.o
acpi.o: driver/acpi/acpi.c
gcc $(CFLAGS) -c driver/acpi/acpi.c -o driver/acpi/acpi.o
clean:
rm -rf $(GARBAGE)

34
kernel/driver/acpi/acpi.c Normal file
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@ -0,0 +1,34 @@
#include "acpi.h"
#include "../../common/printk.h"
#include "../../common/kprint.h"
#include "../multiboot2/multiboot2.h"
static struct acpi_RSDP_t *rsdp;
/**
* @brief 迭代器，用于迭代描述符头（位于ACPI标准文件的Table 5-29）
* @param _fun 迭代操作调用的函数
* @param _data 数据
*/
void acpi_iter_SDT(bool (*_fun)(const struct acpi_iter_SDT_header_t *, void *),
void *_data)
{
}
/**
* @brief 初始化acpi模块
*
*/
void acpi_init()
{
kinfo("Initializing ACPI...");
struct multiboot_tag_old_acpi_t* tmp1;
int reserved;
kdebug("yyyy");
multiboot2_iter(multiboot2_get_acpi_old_RSDP, tmp1, &reserved);
kdebug("1");
*rsdp = *(struct acpi_RSDP_t*)(tmp1->rsdp);
kdebug("RsdtAddress=%#018lx", rsdp->RsdtAddress);
}

164
kernel/driver/acpi/acpi.h Normal file
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@ -0,0 +1,164 @@
/**
* 解析acpi信息的模块
**/
#pragma once
#include "../../common/glib.h"
#define ACPI_ICS_TYPE_PROCESSOR_LOCAL_APIC 0
#define ACPI_ICS_TYPE_IO_APIC 1
#define ACPI_ICS_TYPE_INTERRUPT_SOURCE_OVERRIDE 2
#define ACPI_ICS_TYPE_NMI_SOURCE 3
#define ACPI_ICS_TYPE_LOCAL_APIC_NMI 4
#define ACPI_ICS_TYPE_LOCAL_APIC_ADDRESS_OVERRIDE 5
#define ACPI_ICS_TYPE_IO_SAPIC 6
#define ACPI_ICS_TYPE_LOCAL_SAPIC 7
#define ACPI_ICS_TYPE_PLATFORM_INTERRUPT_SOURCES 8
#define ACPI_ICS_TYPE_PROCESSOR_LOCAL_x2APIC 9
#define ACPI_ICS_TYPE_PROCESSOR_LOCAL_x2APIC_NMI 0xA
#define ACPI_ICS_TYPE_PROCESSOR_GICC 0xB
#define ACPI_ICS_TYPE_PROCESSOR_GICD 0xC
#define ACPI_ICS_TYPE_PROCESSOR_GIC_MSI_Frame 0xD
#define ACPI_ICS_TYPE_PROCESSOR_GICR 0xE
#define ACPI_ICS_TYPE_PROCESSOR_GIC_ITS 0xF
// 0x10-0x7f Reserved. OSPM skips structures of the reserved type.
// 0x80-0xff Reserved for OEM use
struct acpi_RSDP_t
{
unsigned char Signature[8];
unsigned char Checksum;
unsigned char OEMID[6];
unsigned char Revision;
// 32bit physical address of the RSDT
uint RsdtAddress;
};
struct acpi_RSDP_2_t
{
struct acpi_RSDP_t rsdp1;
// fields below are only valid when the revision value is 2 or above
// 表的长度（单位：字节）从offset=0开始算
uint Length;
// 64bit的XSDT的物理地址
ul XsdtAddress;
unsigned char ExtendedChecksum; // 整个表的checksum，包括了之前的checksum区域
unsigned char Reserved[3];
};
struct acpi_system_description_table_header_t
{
// The ascii string representation of the table header.
unsigned char Signature[4];
// 整个表的长度（单位：字节），包括了header，从偏移量0处开始
uint Length;
// The revision of the structure corresponding to the signature field for this table.
unsigned char Revision;
// The entire table, including the checksum field, must add to zero to be considered valid.
char Checksum;
unsigned char OEMID[6];
unsigned char OEM_Table_ID[8];
uint OEMRevision;
uint CreatorID;
uint CreatorRevision;
};
// =========== MADT结构，其中Signature为APIC ============
struct acpi_Multiple_APIC_Description_Table_t
{
struct acpi_system_description_table_header_t header;
// 32bit的，每个处理器可访问的local中断控制器的物理地址
uint Local_Interrupt_Controller_Address;
// Multiple APIC flags, 详见 ACPI Specification Version 6.3, Table 5-44
uint flags;
void *Interrupt_Controller_Structure;
};
struct apic_Interrupt_Controller_Structure_header_t
{
unsigned char type;
unsigned char length;
};
struct acpi_Processor_Local_APIC_Structure_t
{
// type=0
struct apic_Interrupt_Controller_Structure_header_t header;
unsigned char ACPI_Processor_UID;
// 处理器的local apic id
unsigned char ACPI_ID;
//详见 ACPI Specification Version 6.3, Table 5-47
uint flags;
};
struct acpi_Processor_IO_APIC_Structure_t
{
// type=1
struct apic_Interrupt_Controller_Structure_header_t header;
unsigned char IO_APIC_ID;
unsigned char Reserved;
// 32bit的IO APIC物理地址 （每个IO APIC都有一个独立的物理地址）
uint IO_APIC_Address;
// 当前IO APIC的全局系统中断向量号起始值
// The number of intr inputs is determined by the IO APIC's Max Redir Entry register.
uint Global_System_Interrupt_Base;
};
// =========== RSDT 结构 =============
struct acpi_RSDT_Structure_t
{
// 通过RSDT的header->Length可以计算出entry的数量n
// n = (length - 32)/4
struct acpi_system_description_table_header_t header;
// 一个包含了n个32bit物理地址的数组，指向了其他的description headers
uint *Entry;
};
// =========== XSDT 结构 =============
struct acpi_XSDT_Structure_t
{
// 通过RSDT的header->Length可以计算出entry的数量n
// n = (length - 32)/8
struct acpi_system_description_table_header_t header;
// 一个包含了n个64bit物理地址的数组，指向了其他的description headers
ul *Entry;
};
// 要被迭代的系统描述表的开头的sign
struct acpi_iter_SDT_header_t
{
unsigned char Signature[8];
};
/**
* @brief 迭代器，用于迭代描述符头（位于ACPI标准文件的Table 5-29）
* @param _fun 迭代操作调用的函数
* @param _data 数据
*/
void acpi_iter_SDT(bool (*_fun)(const struct acpi_iter_SDT_header_t *, void *),
void *_data);
/**
* @brief 获取MADT信息
*
* @param _iter_data 要被迭代的信息的结构体
* @param _data 返回信息的结构体指针
* @param count 返回数组的长度
* @return true
* @return false
*/
bool acpi_get_MADT(const struct acpi_iter_SDT_header_t *_iter_data, void *_data);
// 初始化acpi模块
void acpi_init();

46
kernel/driver/multiboot2/multiboot2.c
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@ -2,15 +2,16 @@
#include "assert.h"
#include "../../common/glib.h"
#include"../../common/kprint.h"
uintptr_t boot_info_addr;
unsigned int multiboot2_magic;
unsigned int boot_info_size;
bool multiboot2_init(void)
{
uintptr_t *addr = (uintptr_t*)boot_info_addr;
if(multiboot2_magic != MULTIBOOT2_BOOTLOADER_MAGIC);
uintptr_t *addr = (uintptr_t *)boot_info_addr;
if (multiboot2_magic != MULTIBOOT2_BOOTLOADER_MAGIC)
;
return false;
// addr+0 处保存了大小
boot_info_size = *(unsigned int *)addr;
@ -20,12 +21,14 @@ bool multiboot2_init(void)
void multiboot2_iter(bool (*_fun)(const struct iter_data_t *, void *, unsigned int *),
void *data, unsigned int *count)
{
uintptr_t addr = boot_info_addr;
// 下一字节开始为 tag 信息
struct iter_data_t *tag = (struct iter_data_t *)(addr + 8);
for (; tag->type != MULTIBOOT_TAG_TYPE_END;
tag = (struct iter_data_t *)((uint8_t *)tag + ALIGN(tag->size, 8)))
{
if (_fun(tag, data, count) == true)
{
return;
@ -94,8 +97,41 @@ bool multiboot2_get_VBE_info(const struct iter_data_t *_iter_data, void *data, u
*/
bool multiboot2_get_Framebuffer_info(const struct iter_data_t *_iter_data, void *data, unsigned int *reserved)
{
if(_iter_data->type !=MULTIBOOT_TAG_TYPE_FRAMEBUFFER)
if (_iter_data->type != MULTIBOOT_TAG_TYPE_FRAMEBUFFER)
return false;
*(struct multiboot_tag_framebuffer_info_t *)data = *(struct multiboot_tag_framebuffer_info_t*)_iter_data;
*(struct multiboot_tag_framebuffer_info_t *)data = *(struct multiboot_tag_framebuffer_info_t *)_iter_data;
return true;
}
/**
* @brief 获取acpi旧版RSDP
*
* @param _iter_data 要被迭代的信息的结构体
* @param _data old RSDP的结构体指针
* @param reserved
* @return uint8_t* struct multiboot_tag_old_acpi_t
*/
bool multiboot2_get_acpi_old_RSDP(const struct iter_data_t *_iter_data, void *data, unsigned int *reserved)
{
if (_iter_data->type != MULTIBOOT_TAG_TYPE_ACPI_OLD)
return false;
kdebug("xxx=%#018lx",((struct multiboot_tag_old_acpi_t *)_iter_data)->rsdp);
*(struct multiboot_tag_old_acpi_t *)data = *(struct multiboot_tag_old_acpi_t *)_iter_data;
return true;
}
/**
* @brief 获取acpi新版RSDP
*
* @param _iter_data 要被迭代的信息的结构体
* @param _data old RSDP的结构体指针
* @param reserved
* @return uint8_t* struct multiboot_tag_old_acpi_t
*/
bool multiboot2_get_acpi_new_RSDP(const struct iter_data_t *_iter_data, void *data, unsigned int *reserved)
{
if (_iter_data->type != MULTIBOOT_TAG_TYPE_ACPI_NEW)
return false;
*(struct multiboot_tag_new_acpi_t *)data = *(struct multiboot_tag_new_acpi_t *)_iter_data;
return true;
}

20
kernel/driver/multiboot2/multiboot2.h
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@ -448,3 +448,23 @@ bool multiboot2_get_VBE_info(const struct iter_data_t *_iter_data, void *_data,
* @param _data 返回信息的结构体指针
*/
bool multiboot2_get_Framebuffer_info(const struct iter_data_t *_iter_data, void *_data, unsigned int *reserved);
/**
* @brief 获取acpi旧版RSDP
*
* @param _iter_data 要被迭代的信息的结构体
* @param _data old RSDP的结构体指针
* @param reserved
* @return uint8_t*
*/
bool multiboot2_get_acpi_old_RSDP(const struct iter_data_t *_iter_data, void *data, unsigned int *reserved);
/**
* @brief 获取acpi新版RSDP
*
* @param _iter_data 要被迭代的信息的结构体
* @param _data old RSDP的结构体指针
* @param reserved
* @return uint8_t* struct multiboot_tag_old_acpi_t
*/
bool multiboot2_get_acpi_new_RSDP(const struct iter_data_t *_iter_data, void *data, unsigned int *reserved);

7
kernel/main.c
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@ -13,6 +13,9 @@
#include "process/process.h"
#include "syscall/syscall.h"
#include "driver/multiboot2/multiboot2.h"
#include "driver/acpi/acpi.h"
unsigned int *FR_address = (unsigned int *)0xb8000; //帧缓存区的地址
struct memory_desc memory_management_struct = {{0}, 0};
@ -157,8 +160,10 @@ void system_initialize()
cpu_init();
acpi_init();
// test_slab();
test_mm();
// test_mm();
// 再初始化进程模块。顺序不能调转
// process_init();
}