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Import backup from 2005-06-20

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This commit is contained in:
Josh Holtrop 2005-06-20 22:00:00 -04:00
parent 4689c11cc8
commit da90bcc164
12 changed files with 204 additions and 37 deletions
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29
Makefile
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@ -16,7 +16,7 @@ UMOUNT=sudo umount
# Do not print "Entering directory ..."
MAKEFLAGS += --no-print-directory
.PHONY: all clean initrd apps grub_image install install_img
.PHONY: all clean initrd apps grub_image install install_img depend copy_image
all:
make -C kernel
@ -47,22 +47,16 @@ grub_image:
rm grub_commands.tmp
rm grub_image_device.map.tmp
install:
gzip -c $(INITRD) > $(INITRD).gz
-mkdir $(FLOPPY_MOUNT)
$(MOUNT) -t ext2 $(DEVICE) $(FLOPPY_MOUNT)
-cp kernel/kernel.bin $(FLOPPY_MOUNT)
-cp rmmod/rmmod.bin $(FLOPPY_MOUNT)
-cp menu.lst $(FLOPPY_MOUNT)/boot/grub
-cp $(INITRD).gz $(FLOPPY_MOUNT)/$(INITRD).gz
$(UMOUNT) $(FLOPPY_MOUNT)
-rmdir $(FLOPPY_MOUNT)
install_img:
gzip -c $(INITRD) > $(INITRD).gz
-mkdir $(FLOPPY_MOUNT)
copy_image:
cp $(GRUB_IMAGE) $(FLOPPY_IMAGE)
$(MOUNT) -t ext2 -o loop $(FLOPPY_IMAGE) $(FLOPPY_MOUNT)
install: FDEV=$(FLOPPY)
install_img: FDEV=$(FLOPPY_IMAGE)
install_img: MOUNT_FLAGS=-o loop
install_img: copy_image
install install_img:
-mkdir $(FLOPPY_MOUNT)
$(MOUNT) -t ext2 $(MOUNT_FLAGS) $(FDEV) $(FLOPPY_MOUNT)
-cp kernel/kernel.bin $(FLOPPY_MOUNT)
-cp rmmod/rmmod.bin $(FLOPPY_MOUNT)
-cp menu.lst $(FLOPPY_MOUNT)/boot/grub
@ -78,7 +72,10 @@ initrd:
cp -Pr $(INITRD_DIR)/* $(INITRD_MOUNT)
$(UMOUNT) $(INITRD_MOUNT)
rm -rf $(INITRD_MOUNT)
gzip -c $(INITRD) > $(INITRD).gz
depend:
make -C kernel depend
wordcount:
find . -regex '\(.*\.[ch]\)\|\(.*\.asm\)\|\(.*\.inc\)\|\(.*\.cpp\)' | xargs cat | wc

2
build.txt Normal file
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@ -0,0 +1,2 @@
To build the HOS kernel, just run 'make'
To build a HOS floppy image for bochs, run 'make initrd' and 'make install_img' as root (root permissions needed to mount floppy image)

5
kernel/Makefile
View File

@ -70,8 +70,9 @@ char/keyboard.o: lang/conv.h display/kout.h display/display.h devices.h
lang/lang.o: lang/lang.h hos_defines.h
lang/string.o: lang/string.h lang/lang.h hos_defines.h
lang/new.o: hos_defines.h mm/vmm.h multiboot.h
fs/vfs.o: hos_defines.h display/kout.h fs/vfs.h lang/vector.h lang/string.h
fs/vfs.o: devices.h
fs/vfs.o: hos_defines.h display/kout.h fs/vfs.h fs/ext2.h lang/vector.h
fs/vfs.o: lang/string.h devices.h
fs/ext2.o: fs/ext2.h fs/vfs.h
char/misc_char.o: hos_defines.h devices.h char/misc_char.h sys/io.h
block/ramdisk.o: functions.h hos_defines.h sys/io.h mm/vmm.h multiboot.h
block/ramdisk.o: lang/lang.h block/ramdisk.h devices.h

83
kernel/Makefile.bak Normal file
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@ -0,0 +1,83 @@
# Makefile for HOS
# Josh Holtrop
# Created: 07/08/04
# Modified: 06/13/05
# Assembler Information:
NASM=nasm
NASM_FLAGS=-f aout
# C/C++ Information:
CPPFLAGS=-fleading-underscore -fno-builtin -nostdlib -nostartfiles -nodefaultlibs -I. -Wall
CC=gcc
CXX=g++
CXXFLAGS=-fno-rtti -fno-exceptions
# Linker Information:
LD=ld
LDFLAGS=-nodefaultlibs -nostdlib --no-demangle -T link.ld
# Files
OBJS=boot.o kernel.o lang/lang_a.o mm/mm.o mm/vmm.o lang/conv.o \
display/kout.o char/vconsole.o display/display.o devices.o \
sys/pic.o char/keyboard.o block/ramdisk.o fs/vfs.o \
lang/lang.o lang/string.o lang/new.o fs/ext2.o char/misc_char.o
CSRC=kernel.c mm/mm.c mm/vmm.c lang/conv.c display/kout.c display/display.c sys/pic.c char/keyboard.c lang/lang.c
CXXSRC=lang/string.cpp lang/new.cpp fs/vfs.cpp fs/ext2.cpp char/misc_char.cpp block/ramdisk.cpp char/vconsole.cpp devices.cpp
.PHONY: all depend clean html
all: $(OBJS)
$(LD) $(LDFLAGS) -Map kernel.map $(OBJS) -o kernel.bin
@echo ' Kernel built: ' `ls -sk kernel.bin | cut -d' ' -f1`kb
depend:
makedepend -- $(CPPFLAGS) -- $(CSRC) $(CXXSRC)
boot.o: boot.asm
$(NASM) $(NASM_FLAGS) -l boot.lst boot.asm -o boot.o
lang/lang_a.o: lang/lang.asm
$(NASM) $(NASM_FLAGS) -l lang.lst lang/lang.asm -o lang/lang_a.o
clean:
-rm -f $(OBJS) *.bin *.map *.lst *.out *~ fs/*~ sys/*~ block/*~ char/*~ lang/*~ mm/*~ display/*~
html:
-rm -rf html
-mkdir html
source-highlight --output-dir=html -f xhtml -n $(CSRC) $(CXXSRC)
# The following is used by 'make' to automatically
# generate dependency information
# DO NOT DELETE
kernel.o: kernel.h hos_defines.h multiboot.h module.h lang/lang.h functions.h
kernel.o: sys/io.h mm/mm.h mm/vmm.h lang/conv.h devices.h display/display.h
kernel.o: display/kout.h sys/pic.h char/keyboard.h block/ramdisk.h fs/vfs.h
kernel.o: fs/ext2.h fs/vfs.h
mm/mm.o: kernel.h hos_defines.h multiboot.h mm/mm.h
mm/vmm.o: hos_defines.h kernel.h multiboot.h mm/vmm.h lang/lang.h mm/mm.h
lang/conv.o: lang/conv.h hos_defines.h
display/kout.o: hos_defines.h display/kout.h lang/conv.h devices.h
display/kout.o: char/misc_char.h char/misc_char.h
display/display.o: devices.h hos_defines.h char/vconsole.h display/display.h
display/display.o: lang/lang.h kernel.h multiboot.h display/vesafb.h
display/display.o: char/keyboard.h display/kout.h
sys/pic.o: hos_defines.h sys/pic.h sys/io.h
char/keyboard.o: hos_defines.h char/keyboard.h sys/io.h functions.h
char/keyboard.o: lang/conv.h display/kout.h display/display.h devices.h
lang/lang.o: lang/lang.h hos_defines.h
lang/string.o: lang/string.h lang/lang.h hos_defines.h
lang/new.o: hos_defines.h mm/vmm.h multiboot.h
fs/vfs.o: hos_defines.h display/kout.h fs/vfs.h fs/ext2.h lang/vector.h
fs/vfs.o: lang/string.h devices.h
fs/ext2.o: fs/ext2.h fs/vfs.h
char/misc_char.o: hos_defines.h devices.h char/misc_char.h sys/io.h
block/ramdisk.o: functions.h hos_defines.h sys/io.h mm/vmm.h multiboot.h
block/ramdisk.o: lang/lang.h block/ramdisk.h devices.h
char/vconsole.o: hos_defines.h mm/vmm.h multiboot.h lang/lang.h
char/vconsole.o: display/display.h devices.h functions.h sys/io.h
char/vconsole.o: char/vconsole.h
devices.o: hos_defines.h devices.h char/misc_char.h char/misc_char.h
devices.o: char/vconsole.h block/ramdisk.h

1
kernel/devices.h
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@ -22,6 +22,7 @@
#define DEV_MAJOR(x) (((x) >> 8) & 0xFF)
#define DEV_MINOR(x) ((x) & 0xFF)
#define DEV(x,y) ((x) << 8 | (y))
typedef short major_t;
typedef short minor_t;

31
kernel/fs/ext2.cpp
View File

@ -4,3 +4,34 @@
// Date: 05/10/05
// Modified: 05/10/05
#define _HOS_CPP_ _HOS_CPP_
extern "C" {
#include "display/kout.h"
}
#include "ext2.h"
Ext2fs::Ext2fs(device_t dev)
{
myDevice = dev;
if (block_read(DEV_MAJOR(dev), DEV_MINOR(dev), 2, 2, &mySuper) < 1024)
{
myError = -1;
return;
}
if (mySuper.s_magic != EXT2_MAGIC)
{
myError = -2;
return;
}
myError = 0;
mySuperDirty = 0;
kprintf("Device: %d\n", myDevice);
}
Ext2fs::~Ext2fs()
{
if (mySuperDirty)
block_write(DEV_MAJOR(myDevice), DEV_MINOR(myDevice), 2, 2, &mySuper);
}

9
kernel/fs/ext2.h
View File

@ -138,15 +138,16 @@ typedef struct
char name[EXT2_NAME_LEN];
} ext2_dir_entry_t;
#ifdef _HOS_CPP_
class Ext2 : public FileSystem
class Ext2fs : public FileSystem
{
protected:
ext2_super_block_t mySuper;
int mySuperDirty;
public:
Ext2fs(device_t dev);
~Ext2fs();
};
#endif

50
kernel/fs/vfs.cpp
View File

@ -12,6 +12,7 @@ extern "C" {
}
#include "vfs.h"
#include "ext2.h"
#include "lang/vector.h"
#include "lang/string.h"
#include "devices.h"
@ -29,10 +30,43 @@ int vfs_mount(device_t device, int fsType, char *mountPoint)
{
string mountPt(mountPoint);
if (mountPt == "/")
{
if (mountPoints->size())
{
kprintf("/ must be the first filesystem mounted!\n");
return -1;
}
FileSystem *fs = vfs_attempt_mount(device, fsType);
if (fs == NULL)
return -2;
rootInode = fs->getRootInodeNumber();
mountPoints->add(VFSMount(device, fs, mountPt, 0));
return 0;
}
else
{
}
return 0;
return 500;
}
FileSystem *vfs_attempt_mount(device_t device, int fsType)
{
FileSystem *fs;
switch (fsType)
{
case FS_EXT2:
fs = new Ext2fs(device);
break;
default:
return NULL;
}
if (fs->check())
{
delete fs;
return NULL;
}
return fs;
}
VFSMount::VFSMount(device_t dev, FileSystem *fs, string mountPoint, inode_num_t mountInode)
@ -47,7 +81,21 @@ VFSMount::VFSMount(device_t dev, FileSystem *fs, string mountPoint, inode_num_t
VFSMount::~VFSMount()
{
if (myFS)
{
delete myFS;
if (myRefs)
kprintf("Filesystem uncleanly mounted from %s\n", myMountPoint.data());
}
}
FileSystem::FileSystem() {myError = -10278;}
FileSystem::~FileSystem() {}
u32_t FileSystem::totalBlocks(){return 0;}
u32_t FileSystem::usedBlocks(){return 0;};
u32_t FileSystem::freeBlocks(){return 0;};
u32_t FileSystem::totalInodes(){return 0;};
u32_t FileSystem::usedInodes(){return 0;};
u32_t FileSystem::freeInodes(){return 0;};
u32_t FileSystem::getRootInodeNumber(){return 0;};
int FileSystem::check(){return myError;};

9
kernel/fs/vfs.h
View File

@ -8,6 +8,7 @@
#define __HOS_VFS_H__ __HOS_VFS_H__
#define FS_EXT2 1
#define FS_MAX 5
#define VFS_FT_UNKNOWN 0
#define VFS_FT_FILE 1
@ -52,7 +53,11 @@ int vfs_mount(device_t device, int fsType, char *mountPoint);
class FileSystem
{
protected:
int myError;
device_t myDevice;
public:
FileSystem();
FileSystem(device_t dev);
virtual ~FileSystem();
@ -65,6 +70,8 @@ public:
virtual u32_t freeInodes();
virtual u32_t getRootInodeNumber();
virtual int check();
};
class VFSMount
@ -81,6 +88,8 @@ public:
~VFSMount();
};
FileSystem *vfs_attempt_mount(device_t device, int fsType);
#endif
#endif

3
kernel/kernel.c
View File

@ -12,7 +12,6 @@
#include "mm/mm.h"
#include "mm/vmm.h"
#include "lang/conv.h"
//#include "char/vconsole.h"
#include "devices.h"
#include "display/display.h"
#include "display/kout.h"
@ -142,7 +141,7 @@ void k_init()
// we found an initrd
minor_t initrd_minor = ramdisk_register((void *)mb_modules[i].mod_start, mb_modules[i].mod_end - mb_modules[i].mod_start);
kprintf("initrd (%dkb) loaded\n", (mb_modules[i].mod_end - mb_modules[i].mod_start) >> 10);
k_check(vfs_mount((MAJOR_RAMDISK << 8) | initrd_minor, FS_EXT2, "/"), "Could not mount initrd to /!");
k_check(vfs_mount(DEV(MAJOR_RAMDISK, initrd_minor), FS_EXT2, "/"), "Could not mount initrd to /!");
}
}

7
kernel/link.ld
View File

@ -5,7 +5,6 @@ SECTIONS
.text 0xC0108000 : {
code = .; _code = .; __code = .;
*(.text)
/* . = ALIGN(4096); */
}
.gnulinkonce : {
*(.gnu.linkonce*)
@ -14,13 +13,9 @@ SECTIONS
.data : {
data = .; _data = .; __data = .;
*(.data)
/* . = ALIGN(4096); */
}
.rodata : {
rodata = .; _rodata = .; __rodata = .;
*(.rodata)
}
. = ALIGN(4096);
}
.bss : {
bss = .; _bss = .; __bss = .;
*(.bss)