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Added a very small ATA detector. More to come

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This commit is contained in:
Morten Delenk 2016-03-15 21:38:25 +01:00
parent 94c41a2359
commit 0dc8692443
11 changed files with 116 additions and 21 deletions
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6
.travis.yml
View file

@ -4,5 +4,7 @@ install:
- wget --secure-protocol=TLSv1 dark32.cf/crosscomp-x64.tar.xz
- tar -xf crosscomp-x64.tar.xz
- popd
script: make
after_success: curl --ftp-create-dirs -T mtgos -u $USER:$PASS ftp://dark32.cf/
script:
- make
- mv mtgos mtgos-i686
after_success: curl --ftp-create-dirs -T mtgos-i686 -u $USER:$PASS ftp://dark32.cf/

2
buildcrosscompiler.sh
View file

@ -1,7 +1,7 @@
set -o errexit
CROSSPATH=$HOME/opt # You can change it to whatever you want
export PATH=$CROSSPATH/bin:$PATH
mkdir $CROSSPATH
set -o errexit
function buildscript() {
echo "[$(date +%c)] Building binutils for $1." | tee -a buildlog
mkdir build-binutils

4
kernel/hal/x86/Makefile
View file

@ -5,8 +5,8 @@ OBJS = $(addsuffix .o,$(basename $(SRCS)))
CPP = $(PREFIX)g++
CC = $(PREFIX)gcc
ASFLAGS = -m32
CFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -Ic_include/ -ffreestanding -march=native -std=c11 -fno-builtin -Werror -nostdlib -g -fpie
CPPFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -std=c++14 -Iinclude/ -Ic_include/ -fno-rtti -fno-exceptions -ffreestanding -march=native -fno-builtin -Werror -nostdlib -fno-use-cxa-atexit -Wextra -Wno-unused -g -fpie
CFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -Ic_include/ -ffreestanding -std=c11 -fno-builtin -Werror -nostdlib -g -fpie
CPPFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -std=c++14 -Iinclude/ -Ic_include/ -fno-rtti -fno-exceptions -ffreestanding -fno-builtin -Werror -nostdlib -fno-use-cxa-atexit -Wextra -Wno-unused -g -fno-pie
LDFLAGS = -r -melf_i386

69
kernel/hal/x86/blk/BlockDevice.cpp Normal file
View file

@ -0,0 +1,69 @@
#include <base.hpp>
#include <blockdev.hpp>
#include <io.h>
#include <textDISP.hpp>
#include <string.h>
#define ATAPIO_ERR 0x01
#define ATAPIO_DRQ 0x08
#define ATAPIO_SRV 0x10
#define ATAPIO_DF 0x20
#define ATAPIO_RDY 0x40
#define ATAPIO_BSY 0x80
#define DATA 0
#define ATAPI_RESV 1
#define SECTOR_CNT 2
#define LBAlo 3
#define LBAmid 4
#define LBAhi 5
#define DRV 6
#define CMD 7
namespace MTGosHAL {
uint16_t ataports[4]={0x1F0,0x170,0x1E8,0x168};
uint16_t commports[4]={0x3F6,0x376,0x3E6,0x366};
BlockDevice::BlockDevice(): numDevices(0), existent(0) {
for(int i=0;i<4;i++) {
if(inb(ataports[i]+CMD)!=0xFF) {
outb(ataports[i]+DRV, 0xE0);
outb(ataports[i]+LBAlo,0x55);
if(inb(ataports[i]+LBAlo)==0x55) {
existent|=1<<(i<<1);
numDevices++;
}
outb(ataports[i]+DRV, 0xF0);
outb(ataports[i]+LBAlo,0x55);
if(inb(ataports[i]+LBAlo)==0x55) {
existent|=1<<((i<<1)+1);
numDevices++;
}
}
}
if(numDevices==0) {
err<<"Not a single device was found!\n";
}
for(int i=0;i<8;i++) {
if(!(existent&(1<<i)))
continue;
}
}
auto BlockDevice::getDriveCnt() -> uint8_t {return numDevices;}
auto BlockDevice::getDriveNumByName(const char * name) -> uint8_t {
if(strlen(name)!=5)
return -1; //Format is ATA[0-3][sl] (regex)
if((name[0]!=name[2])||(name[2]!='A'))
return -1;
if(name[1]!='T')
return -1;
uint8_t drivenum=name[3]-0x30;
if(drivenum>3)
return -1;
if((name[4]!='s')&&(name[4]!='l'))
return -1;
drivenum<<=1;
drivenum+=(name[4]=='s')?1:0;
if(!(existent&(1<<drivenum)))
return -1;
return drivenum;
}
BlockDevice::~BlockDevice() {};
}

10
kernel/hal/x86/c_include/io.h
View file

@ -1,49 +1,39 @@
#ifndef _IO_H
#define _IO_H
#include <stdint.h>
static inline void outb(uint16_t port, uint8_t val) __attribute__((always_inline));
static inline void outb(uint16_t port, uint8_t val) {
asm volatile("outb %0, %1" : : "a"(val), "Nd"(port));
}
static inline void outw(uint16_t port, uint16_t val) __attribute__((always_inline));
static inline void outw(uint16_t port, uint16_t val) {
asm volatile("outw %0, %1" : : "a"(val), "Nd"(port));
}
static inline void outl(uint16_t port, uint32_t val) __attribute__((always_inline));
static inline void outl(uint16_t port, uint32_t val) {
asm volatile("outl %0, %1" : : "a"(val), "Nd"(port));
}
static inline uint8_t inb(uint16_t port) __attribute__((always_inline));
static inline uint8_t inb(uint16_t port) {
uint8_t ret;
asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline uint16_t inw(uint16_t port) __attribute__((always_inline));
static inline uint16_t inw(uint16_t port) {
uint16_t ret;
asm volatile("inw %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline uint32_t inl(uint16_t port) __attribute__((always_inline));
static inline uint32_t inl(uint16_t port) {
uint32_t ret;
asm volatile("inl %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline void io_wait() __attribute__((always_inline));
static inline void io_wait() {
asm volatile("outb %%al, $0x80" : : "a"(0));
}
static inline void cli() __attribute__((always_inline));
static inline void cli() {
asm volatile("cli");
}
static inline void sti() __attribute__((always_inline));
static inline void sti() {
asm volatile("sti");
}
static inline uint64_t rdtsc() __attribute__((always_inline));
static inline uint64_t rdtsc()
{
uint64_t ret;

5
kernel/hal/x86/c_include/string.h
View file

@ -1,11 +1,12 @@
#ifndef _STRING_H
#define _STRING_H
#ifdef _cplusplus
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
void memmove(void* dst, void* src, uint32_t size);
#ifdef _cplusplus
uint32_t strlen(const char* str);
#ifdef __cplusplus
}
#endif
#endif

2
kernel/hal/x86/include/base.hpp
View file

@ -10,6 +10,7 @@ namespace MTGosHAL {
class GDT;
class IDT;
class Multitasking;
class BlockDevice;
enum class BG_color: uint16_t;
enum class FG_color: uint16_t;
extern Serial debug;
@ -19,5 +20,6 @@ namespace MTGosHAL {
extern GDT gdt;
extern IDT idt;
extern Multitasking tasks;
extern BlockDevice disk;
}
#endif

21
kernel/hal/x86/include/blockdev.hpp Normal file
View file

@ -0,0 +1,21 @@
#ifndef __HAL_BLOCKDEV_HPP
#define __HAL_BLOCKDEV_HPP
#include <stdint.h>
namespace MTGosHAL {
class BlockDevice {
private:
uint8_t numDevices;
uint8_t existent; //Bitmap showing which of the up to 8 drives are actually existent.
public:
BlockDevice();
~BlockDevice();
auto getDriveCnt() -> uint8_t;
auto getDriveNumByName(const char *) -> uint8_t; //Returns -1 if device is not existent
auto readSector(uint32_t drv, uint64_t sectorNum, uint8_t *buf); //Has to be at least 512 bytes big!
auto readSectors(uint32_t drv, uint64_t sectorNum, uint32_t num, uint8_t *buf); //Has to be at least num*512 bytes big!
};
}
#endif /* end of include guard: __HAL_BLOCKDEV_HPP */

3
kernel/hal/x86/init/init.cpp
View file

@ -7,6 +7,7 @@
#include <keyboard.hpp>
#include <Multitasking.h>
#include <multiboot.h>
#include <blockdev.hpp>
extern "C" void intr_stub_0(void);
void main();
namespace MTGosHAL {
@ -17,6 +18,7 @@ namespace MTGosHAL {
IDT idt;
GDT gdt;
Multitasking tasks;
BlockDevice disk;
void main(int eax, struct multiboot_info* ebx) {
out << BG_color::BLACK << FG_color::WHITE << "Loading MTGos...\n";
err << BG_color::BLACK << FG_color::RED;
@ -59,4 +61,3 @@ extern "C" void init(int eax, struct multiboot_info* ebx) {
extern "C" void __cxa_pure_virtual() {
MTGosHAL::debug << "A pure virtual function just got called.\n";
}

9
kernel/hal/x86/string.c
View file

@ -13,4 +13,13 @@ void memmove(void* dst, void* src, uint32_t size) {
to[i]=from[i]; //This would get optimized by gcc to memmove(dst, src, size); if optimizations are enabled.
}
}
uint32_t strlen(const char* str) {
uint32_t i=0;
char* str2=(char*)((int)str);
while(*str2) {
i++;
str2++;
}
return i;
}
#pragma GCC pop_options

6
kernel/kernel/Makefile
View file

@ -4,8 +4,8 @@ OBJS = $(addsuffix .o,$(basename $(SRCS)))
CPP = $(PREFIX)g++
CC = $(PREFIX)gcc
ASFLAGS = -m32
CFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -Ic_include/ -I../hal/dummy/c_include -ffreestanding -march=native -std=c11 -fno-builtin -Werror -nostdlib -g -fpie
CPPFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -std=c++14 -Iinclude/ -Ic_include/ -I../hal/dummy/include -I../hal/dummy/c_include -fno-rtti -fno-exceptions -ffreestanding -march=native -fno-builtin -Werror -nostdlib -fno-use-cxa-atexit -Wextra -Wno-unused -g -fpie
CFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -Ic_include/ -I../hal/dummy/c_include -ffreestanding -std=c11 -fno-builtin -Werror -nostdlib -g -fpie
CPPFLAGS = -m32 -Wall -fno-stack-protector -nostdinc -std=c++14 -Iinclude/ -Ic_include/ -I../hal/dummy/include -I../hal/dummy/c_include -fno-rtti -fno-exceptions -ffreestanding -fno-builtin -Werror -nostdlib -fno-use-cxa-atexit -Wextra -Wno-unused -g -fpie
all: $(OBJS)
%.o: %.cpp
@ -20,4 +20,4 @@ all: $(OBJS)
clean:
rm -rf $(OBJS)
.PHONY: clean all
.PHONY: clean all