/*****************************************************************************************
Copyright (c) 2002-2004, 2005, 2007, 2008 The UbixOS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of
conditions, the following disclaimer and the list of authors. Redistributions in binary
form must reproduce the above copyright notice, this list of conditions, the following
disclaimer and the list of authors in the documentation and/or other materials provided
with the distribution. Neither the name of the UbixOS Project nor the names of its
contributors may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Id$
*****************************************************************************************/
#include <ubixos/init.h>
#include <sys/gdt.h>
#include <sys/video.h>
#include <sys/tss.h>
#include <ubixos/exec.h>
#include <ubixos/kpanic.h>
#include <ubixos/systemtask.h>
#include <vfs/mount.h>
#include <lib/kprintf.h>
#include <lib/kmalloc.h>
#define B_ADAPTORSHIFT 24
#define B_ADAPTORMASK 0x0f
#define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
#define B_CONTROLLERSHIFT 20
#define B_CONTROLLERMASK 0xf
#define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
#define B_SLICESHIFT 20
#define B_SLICEMASK 0xff
#define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK)
#define B_UNITSHIFT 16
#define B_UNITMASK 0xf
#define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
#define B_PARTITIONSHIFT 8
#define B_PARTITIONMASK 0xff
#define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
#define B_TYPESHIFT 0
#define B_TYPEMASK 0xff
#define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
/*****************************************************************************************
Desc: The Kernels Descriptor table:
0x00 - Dummy Entry
0x08 - Ring 0 CS
0x10 - Ring 0 DS
0x18 - Dummy LDT
0x20 - Scheduler TSS
0x28 - Ring 3 CS
0x30 - Ring 3 DS
0x38 - GPF TSS
0x40 - Stack Fault TSS
Notes:
*****************************************************************************************/
ubixDescriptorTable(ubixGDT,9) {
{dummy:0},
ubixStandardDescriptor(0x0000, 0xFFFFF, (dCode + dRead + dBig + dBiglim)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dData + dWrite + dBig + dBiglim)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dLdt)),
ubixStandardDescriptor(0x4200, (sizeof(struct tssStruct)), (dTss + dDpl3)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dCode + dWrite + dBig + dBiglim + dDpl3)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dData + dWrite + dBig + dBiglim + dDpl3)),
ubixStandardDescriptor(0x4200, (sizeof(struct tssStruct)), (dTss)),
ubixStandardDescriptor(0x6200, (sizeof(struct tssStruct)), (dTss)),
};
struct {
unsigned short limit __attribute__ ((packed));
union descriptorTableUnion *gdt __attribute__ ((packed));
} loadGDT = { (9 * sizeof(union descriptorTableUnion) - 1), ubixGDT };
/**
* \brief This is the entry point into the OS where all of the kernels sub systems are started up.
*
* \param rootdev address of root device structure
*/
typedef struct {
u_int32_t version;
char *kernel;
u_int32_t nfs;
u_int32_t bios_used;
u_int32_t bios_geom[8];
u_int32_t bi_size;
u_int32_t mem_sizes;
u_int32_t bios_dev;
} bootinfo;
int kmain(bootinfo *binfo) {
/* Set up counter for startup routine */
int i = 0x0;
u_int32_t *sysTask = 0x0;
/* We preform a clearScreen to make the TEXT buffer nice and empty */
screenClear();
kprintf("[0x%X][%s][0x%X][0x%X][0x%X]\n",binfo->version,binfo->kernel,binfo->bios_used,binfo->bi_size,binfo->bios_dev);
/* Modify src/sys/include/ubixos/init.h to add a startup routine */
for (i = 0x0;i < init_tasksTotal;i++) {
if (init_tasks[i]() != 0x0) {
kpanic("Error: Initializing System.\n");
}
}
/* New Root Mount Point */
//Old 2 new 10
//#ifdef DEBUG
//kprintf("[0x%X][0x%X:0x%X:0x%X:0x%X:0x%X:0x%X]\n",rootdev,B_ADAPTOR(rootdev),B_CONTROLLER(rootdev),B_SLICE(rootdev),B_UNIT(rootdev),B_PARTITION(rootdev),B_TYPE(rootdev));
//#endif
//if (vfs_mount(0x1,B_PARTITION(rootdev)+2,0x0,0xAA,"sys","rw") != 0x0) {
if (vfs_mount(0x1,0x1,0x0,0xAA,"sys","rw") != 0x0) {
kprintf("Problem Mounting sys Mount Point\n");
}
/* Do our mounting */
/*
if (vfs_mount(0x0,0x0,0x0,0x0,"sys","rw") != 0x0) {
kprintf("Problem Mounting sys Mount Point\n");
}
if (vfs_mount(0x0,0x0,0x1,0x0,"tmp","rw") != 0x0) {
kprintf("Problem Mounting tmp Mount Point\n");
}
*/
/* Initialize the system */
kprintf("Free Pages: [%i]\n",systemVitals->freePages);
kprintf("MemoryMap: [0x%X]\n",vmmMemoryMap);
kprintf("Starting UbixOS\n");
sysTask = kmalloc(0x2000);
if(sysTask == NULL)
kprintf("OS: Unable to allocate memory\n");
execThread(systemTask, (uInt32)sysTask+0x2000,0x0);
execFile("sys:/bin/init",0x0,0x0,0x0); /* OS Initializer */
//execFile("sys:/bin/login",0x0,0x0,0x1);
//execFile("sys:/bin/login",0x0,0x0,0x2);
irqEnable(0x0);
while (0x1)
asm("hlt"); /* Keep haulting until the scheduler reacts */
/* Return to start however we should never get this far */
return(0x0);
}
/***
END
***/
