/*-
* Copyright (c) 2002-2018 The UbixOS Project.
* All rights reserved.
*
* This was developed by Christopher W. Olsen for the UbixOS Project.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* 1) Redistributions of source code must retain the above copyright notice, this list of
* conditions, the following disclaimer and the list of authors.
* 2) 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.
* 3) 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 AUTHOR 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.
*/
#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>
#include <sde/sde.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:
0 - 0x00 - Dummy Entry
1 - 0x08 - Ring 0 CS
2 - 0x10 - Ring 0 DS
3 - 0x18 - LDT
4 - 0x20 - Scheduler TSS
5 - 0x28 - Ring 3 CS
6 - 0x30 - Ring 3 DS
7 - 0x38 - GPF TSS
8 - 0x40 - Stack Fault TSS
9 - 0x48 - SMP Private Data
10 - 0x50 - USER %GS (Stack!)
Notes:
MrOlsen: test
*****************************************************************************************/
ubixDescriptorTable(ubixGDT, 11) {
{ .dummy = 0},
ubixStandardDescriptor(0x0000, 0xFFFFF, (dCode + dRead + dBig + dBiglim)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dData + dWrite + dBig + dBiglim)),
ubixStandardDescriptor(VMM_USER_LDT, 0xFFFFF, (dLdt)),
ubixStandardDescriptor(0x4200, (sizeof(struct tssStruct)), (dTss + dDpl3)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dCode + dRead + dBig + dBiglim + dDpl3)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dData + dWrite + dBig + dBiglim + dDpl3)),
ubixStandardDescriptor(0x5200, (sizeof(struct tssStruct)), (dTss + dDpl3)),
ubixStandardDescriptor(0x6200, (sizeof(struct tssStruct)), (dTss)),
ubixStandardDescriptor(0x0000, 0xFFFFF, (dData + dWrite + dBig + dBiglim + dDpl0)),
ubixStandardDescriptor(0xBFC00000, 0xFFFFF, (dData + dWrite + dBig + dBiglim + dDpl3)),
};
struct {
unsigned short limit __attribute__ ((packed));
union descriptorTableUnion *gdt __attribute__ ((packed));
} loadGDT = { (11 * sizeof(union descriptorTableUnion) - 1), ubixGDT };
static char *argv_init[2] = { "init", NULL, }; // ARGV For Initial Proccess
static char *envp_init[6] = { "HOME=/", "PWD=/", "PATH=/bin:/sbin:/usr/bin:/usr/sbin", "USER=root", "GROUP=admin", NULL, }; //ENVP For Initial Proccess
/**
* \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
*/
int kmain(uInt32 rootdev) {
/* Set up counter for startup routine */
int i = 0x0;
/* Do A Clear Screen Just To Make The TEXT Buffer Nice And Empty */
clearScreen();
/* 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 Task[%i].\n", i);
}
/* New Root Mount Point */
//Old 2 new 10
kprintf("[0x%X][0x%X:0x%X:0x%X:0x%X:0x%X:0x%X]\n", B_ADAPTOR(rootdev), B_CONTROLLER(rootdev), B_SLICE(rootdev), B_UNIT(rootdev), B_PARTITION(rootdev), B_TYPE(rootdev));
//if ( vfs_mount( 0x1, B_PARTITION(rootdev) + 2, 0x0, 0xAA, "sys", "rw" ) != 0x0 ) {
if (vfs_mount(0x1, 0x2, 0x0, 0xAA, "sys", "rw") != 0x0) {
kprintf("Problem Mounting sys Mount Point\n");
}
else
kprintf("Mounted sys\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 OS\n");
execThread(systemTask, 0x2000, 0x0);
kprintf("Thread Start!\n");
execFile("sys:/bin/init", argv_init, envp_init, 0x0); /* OS Initializer */
//kprintf("File Start!\n");
kprintf("SDE Thread Start! [0x%X]\n", &sdeThread);
execThread(&sdeThread, 0x2000,0x0);
irqEnable(0x0);
while (0x1)
asm("hlt");
/* Keep haulting until the scheduler reacts */
/* Return to start however we should never get this far */
return (0x0);
}
Charlie Root