static void sysinit(void)
{
int32 i;
struct procent *prptr; /* ptr to process table entry */
struct sentry *semptr; /* prr to semaphore table entry */
struct memblk *memptr; /* ptr to memory block */
/* Initialize system variables */
/* Count the Null process as the first process in the system */
prcount = 1;
/* Scheduling is not currently blocked */
Defer.ndefers = 0;
/* Initialize the free memory list */
maxheap = (void *)addressp2k(MAXADDR);
memlist.mnext = (struct memblk *)minheap;
/* Overlay memblk structure on free memory and set fields */
memptr = (struct memblk *)minheap;
memptr->mnext = NULL;
memptr->mlength = memlist.mlength = (uint32)(maxheap - minheap);
/* Initialize process table entries free */
for (i = 0; i < NPROC; i++) {
prptr = &proctab[i];
prptr->prstate = PR_FREE;
prptr->prname[0] = NULLCH;
prptr->prstkbase = NULL;
prptr->prprio = 0;
}
/* Initialize the Null process entry */
prptr = &proctab[NULLPROC];
prptr->prstate = PR_CURR;
prptr->prprio = 0;
strncpy(prptr->prname, "prnull", 7);
prptr->prstkbase = minheap;
prptr->prstklen = NULLSTK;
prptr->prstkptr = 0;
currpid = NULLPROC;
/* Initialize semaphores */
for (i = 0; i < NSEM; i++) {
semptr = &semtab[i];
semptr->sstate = S_FREE;
semptr->scount = 0;
semptr->squeue = newqueue();
}
/* Initialize buffer pools */
bufinit();
/* Create a ready list for processes */
readylist = newqueue();
/* Initialize real time clock */
clkinit();
/* Initialize non-volative RAM storage */
#if 0
nvramInit();
#endif
/* Initialize devices */
for (i = 0; i < NDEVS; i++) {
init(i);
}
return;
}
/**
* Intializes all Xinu data structures and devices.
* @return OK if everything is initialized successfully
*/
static int sysinit(void)
{
int i;
struct thrent *thrptr; /* thread control block pointer */
struct memblock *pmblock; /* memory block pointer */
/* Initialize system variables */
/* Count this NULLTHREAD as the first thread in the system. */
thrcount = 1;
/* Initialize free memory list */
memheap = roundmb(memheap);
platform.maxaddr = truncmb(platform.maxaddr);
memlist.next = pmblock = (struct memblock *)memheap;
memlist.length = (uint)(platform.maxaddr - memheap);
pmblock->next = NULL;
pmblock->length = (uint)(platform.maxaddr - memheap);
/* Initialize thread table */
for (i = 0; i < NTHREAD; i++)
{
thrtab[i].state = THRFREE;
}
/* initialize null thread entry */
thrptr = &thrtab[NULLTHREAD];
thrptr->state = THRCURR;
thrptr->prio = 0;
strlcpy(thrptr->name, "prnull", TNMLEN);
thrptr->stkbase = (void *)&_end;
thrptr->stklen = (ulong)memheap - (ulong)&_end;
thrptr->stkptr = 0;
thrptr->memlist.next = NULL;
thrptr->memlist.length = 0;
thrcurrent = NULLTHREAD;
/* Initialize semaphores */
for (i = 0; i < NSEM; i++)
{
semtab[i].state = SFREE;
semtab[i].queue = queinit();
}
/* Initialize monitors */
for (i = 0; i < NMON; i++)
{
montab[i].state = MFREE;
}
/* Initialize buffer pools */
for (i = 0; i < NPOOL; i++)
{
bfptab[i].state = BFPFREE;
}
/* initialize thread ready list */
readylist = queinit();
#if SB_BUS
backplaneInit(NULL);
#endif /* SB_BUS */
#if RTCLOCK
/* initialize real time clock */
clkinit();
#endif /* RTCLOCK */
#ifdef UHEAP_SIZE
/* Initialize user memory manager */
{
void *userheap; /* pointer to user memory heap */
userheap = stkget(UHEAP_SIZE);
if (SYSERR != (int)userheap)
{
userheap = (void *)((uint)userheap - UHEAP_SIZE + sizeof(int));
memRegionInit(userheap, UHEAP_SIZE);
/* initialize memory protection */
safeInit();
/* initialize kernel page mappings */
safeKmapInit();
}
}
#endif
#if USE_TLB
/* initialize TLB */
tlbInit();
/* register system call handler */
exceptionVector[EXC_SYS] = syscall_entry;
#endif /* USE_TLB */
#if NMAILBOX
/* intialize mailboxes */
mailboxInit();
#endif
#if NDEVS
for (i = 0; i < NDEVS; i++)
{
devtab[i].init((device*)&devtab[i]);
}
#endif
#ifdef WITH_USB
usbinit();
#endif
#if NVRAM
nvramInit();
#endif
#if NNETIF
netInit();
#endif
#if GPIO
gpioLEDOn(GPIO_LED_CISCOWHT);
#endif
return OK;
}
/*------------------------------------------------------------------------
* sysinit -- initialize all Xinu data structeres and devices
*------------------------------------------------------------------------
*/
LOCAL sysinit()
{
int i,j,len;
struct pentry *pptr; /* null process entry */
struct sentry *sptr;
struct mblock *volatile mptr;
numproc = 0; /* initialize system variables */
nextproc = NPROC-1;
nextsem = NSEM-1;
nextqueue = NPROC; /* q[0..NPROC-1] are processes */
memlist.mnext = mptr = /* initialize free memory list */
(struct mblock *volatile) roundmb(__malloc_heap_start);
mptr->mnext = (struct mblock *)NULL;
mptr->mlen = len = (int) truncmb(RAMEND - NULLSTK - (unsigned)&__bss_end);
__malloc_heap_start = (char *)mptr;
__malloc_heap_end = __malloc_heap_start + len;
kprintf_P(PSTR("Heap: %p of length %d\n"), mptr, len);
for (i=0 ; i<NPROC ; i++) /* initialize process table */
proctab[i].pstate = PRFREE;
/* initialize null process entry */
pptr = &proctab[NULLPROC];
pptr->pstate = PRCURR;
for (j=0; j<6; j++)
pptr->pname[j] = "nullp"[j];
pptr->plimit = (unsigned char *)(RAMEND + 1) - NULLSTK;
pptr->pbase = (unsigned char *) RAMEND;
*pptr->pbase = (unsigned char)MAGIC; /* clobbers return, but proc 0 doesn't return */
pptr->paddr = (int *) main;
pptr->pargs = 0;
pptr->pprio = 0;
pptr->pregs[SSP_L] = lobyte((unsigned int)pptr->plimit); /* for error checking */
pptr->pregs[SSP_H] = hibyte((unsigned int)pptr->plimit); /* for error checking */
currpid = NULLPROC;
for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */
(sptr = &semaph[i])->sstate = SFREE;
sptr->sqtail = 1 + (sptr->sqhead = newqueue());
}
rdytail = 1 + (rdyhead=newqueue()); /* initialize ready list */
#ifdef MEMMARK
kprintf("Memory marking\n");
_mkinit(); /* initialize memory marking */
#else
kprintf("Pool init\n");
poolinit(); /* explicitly */
pinit(MAXMSGS);
#endif
#ifdef RTCLOCK
kprintf("init RTC\n");
clkinit(); /* initialize r.t.clock */
#endif
#ifdef NDEVS
for ( i=0 ; i<NDEVS ; i++ ) {
if (i>0) kprintf("init dev %d\n", i);
init(i);
}
#endif
#ifdef NNETS
// kprintf("net init\n");
netinit();
#endif
return (OK);
}
/*------------------------------------------------------------------------
* sysinit -- initialize all Xinu data structeres and devices
*------------------------------------------------------------------------
*/
LOCAL int sysinit()
{
int i,j;
struct pentry *pptr;
struct sentry *sptr;
struct mblock *mptr;
numproc = 0; /* initialize system variables */
nextproc = NPROC-1;
nextsem = NSEM-1;
nextqueue = NPROC; /* q[0..NPROC-1] are processes */
/* initialize free memory list */
/* PC version has to pre-allocate 640K-1024K "hole" */
if (maxaddr+1 > (char *)HOLESTART) {
memlist.mnext = mptr = (struct mblock *) roundmb(&end);
mptr->mnext = (struct mblock *)HOLEEND;
mptr->mlen = (int) truncew(((unsigned) HOLESTART -
(unsigned)&end));
mptr->mlen -= 4;
mptr = (struct mblock *) HOLEEND;
mptr->mnext = 0;
mptr->mlen = (int) truncew((unsigned)maxaddr - HOLEEND -
NULLSTK);
} else {
/* initialize free memory list */
memlist.mnext = mptr = (struct mblock *) roundmb(&end);
mptr->mnext = 0;
mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end -
NULLSTK);
}
for (i=0 ; i<NPROC ; i++) /* initialize process table */
proctab[i].pstate = PRFREE;
pptr = &proctab[NULLPROC]; /* initialize null process entry */
pptr->pstate = PRCURR;
for (j=0; j<7; j++)
pptr->pname[j] = "prnull"[j];
pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK;
pptr->pbase = (WORD) maxaddr - 3;
pptr->pesp = pptr->pbase-4; /* for stkchk; rewritten before used */
*( (int *)pptr->pbase ) = MAGIC;
pptr->paddr = (WORD) nulluser;
pptr->pargs = 0;
pptr->pprio = 0;
currpid = NULLPROC;
for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */
(sptr = &semaph[i])->sstate = SFREE;
sptr->sqtail = 1 + (sptr->sqhead = newqueue());
}
rdytail = 1 + (rdyhead=newqueue());/* initialize ready list */
#ifdef MEMMARK
_mkinit(); /* initialize memory marking */
#endif
#ifdef RTCLOCK
clkinit(); /* initialize r.t.clock */
#endif
pci_init(); /* PCI */
mon_init(); /* init monitor */
// ripinit();
#ifdef NDEVS
for (i=0 ; i<NDEVS ; i++ ) {
init_dev(i);
}
#endif
buf_init();
return(OK);
}
/*------------------------------------------------------------------------
* sysinit -- initialize all Xinu data structeres and devices
*------------------------------------------------------------------------
*/
LOCAL
sysinit()
{
static long currsp;
int i,j;
struct pentry *pptr;
struct sentry *sptr;
struct mblock *mptr;
numproc = 0; /* initialize system variables */
nextproc = NPROC-1;
nextsem = NSEM-1;
nextqueue = NPROC; /* q[0..NPROC-1] are processes */
#ifdef X__COM32__
puts_com32("sysinit()\n");
#endif
#ifdef __COM32__
/* initialize free memory list */
kprintf("com32topmem %d\n", (unsigned long) com32topmem);
com32topmem = com32topmem - 1024*64; /* !!! we need some space fort this code */
maxaddr = (char*) com32topmem;
kprintf("maxaddr %d\n", (unsigned long) maxaddr);
memlist.mnext = mptr = (struct mblock *) roundmb(&end);
mptr->mnext = 0;
mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end -
NULLSTK);
#else
/* initialize free memory list */
/* PC version has to pre-allocate 640K-1024K "hole" */
if (maxaddr+1 > HOLESTART) {
memlist.mnext = mptr = (struct mblock *) roundmb(&end);
mptr->mnext = (struct mblock *)HOLEEND;
mptr->mlen = (int) truncew((unsigned) HOLESTART -
(unsigned)&end - 4);
mptr = (struct mblock *) HOLEEND;
mptr->mnext = 0;
mptr->mlen = (int) truncew(maxaddr - HOLEEND - NULLSTK);
} else {
/* initialize free memory list */
memlist.mnext = mptr = (struct mblock *) roundmb(&end);
mptr->mnext = 0;
mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end -
NULLSTK);
}
#endif
#ifdef X__COM32__
puts_com32("sysinit() free memory list done\n");
#endif
for (i=0 ; i<NPROC ; i++) /* initialize process table */
proctab[i].pstate = PRFREE;
#ifdef X__COM32__
puts_com32("sysinit() proctab done\n");
#endif
pptr = &proctab[NULLPROC]; /* initialize null process entry */
pptr->pstate = PRCURR;
for (j=0; j<7; j++)
pptr->pname[j] = "prnull"[j];
pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK;
pptr->pbase = (WORD) maxaddr - 3;
pptr->pesp = pptr->pbase-4; /* for stkchk; rewritten before used */
*( (int *)pptr->pbase ) = MAGIC;
pptr->paddr = (WORD) nulluser;
pptr->pargs = 0;
pptr->pprio = 0;
currpid = NULLPROC;
for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */
(sptr = &semaph[i])->sstate = SFREE;
sptr->sqtail = 1 + (sptr->sqhead = newqueue());
}
rdytail = 1 + (rdyhead=newqueue());/* initialize ready list */
#ifdef X__COM32__
puts_com32("sysinit() semaphores done\n");
#endif
#ifdef MEMMARK
_mkinit(); /* initialize memory marking */
#ifdef __COM32__
puts_com32("sysinit() memory marking done\n");
#endif
#endif
#ifdef RTCLOCK
clkinit(); /* initialize r.t.clock */
#ifdef __COM32__
puts_com32("sysinit() rtc done\n");
#endif
#endif
#ifdef NDEVS
for ( i=0 ; i<NDEVS ; i++ ) {
init(i);
}
#ifdef __COM32__
puts_com32("sysinit() devs done\n");
#endif
#endif
#ifdef NNETS
netinit();
#ifdef __COM32__
puts_com32("sysinit() netinit() done\n");
#endif
#endif
return(OK);
}
/*------------------------------------------------------------------------
*
* sysinit - Initialize all Xinu data structures and devices
*
*------------------------------------------------------------------------
*/
static void sysinit()
{
int32 i;
struct procent *prptr; /* Ptr to process table entry */
struct sentry *semptr; /* Ptr to semaphore table entry */
/* Platform Specific Initialization */
platinit();
/* kprintf("\033[39;49m\n\r%s\n\n\r", VERSION);*/
/* Initialize the interrupt vectors */
initevec();
/* Initialize free memory list */
meminit();
/* Initialize system variables */
/* Count the Null process as the first process in the system */
prcount = 1;
/* Scheduling is not currently blocked */
Defer.ndefers = 0;
/* Initialize process table entries free */
for (i = 0; i < NPROC; i++) {
prptr = &proctab[i];
prptr->prstate = PR_FREE;
prptr->prname[0] = NULLCH;
prptr->prstkbase = NULL;
prptr->prprio = 0;
}
/* Initialize the Null process entry */
prptr = &proctab[NULLPROC];
prptr->prstate = PR_CURR;
prptr->prprio = 0;
strncpy(prptr->prname, "prnull", 7);
prptr->prstkbase = getstk(NULLSTK);
prptr->prstklen = NULLSTK;
prptr->prstkptr = 0;
currpid = NULLPROC;
/* Initialize semaphores */
for (i = 0; i < NSEM; i++) {
semptr = &semtab[i];
semptr->sstate = S_FREE;
semptr->scount = 0;
semptr->squeue = newqueue();
}
/* Initialize buffer pools */
bufinit();
/* Create a ready list for processes */
readylist = newqueue();
/* Initialize the real time clock */
clkinit();
for (i = 0; i < NDEVS; i++) {
init(i);
}
return;
}
/*------------------------------------------------------------------------
* sysinit -- initialize all Xinu data structeres and devices
*------------------------------------------------------------------------
*/
LOCAL
sysinit()
{
static long currsp;
int i,j, avail;
struct pentry *pptr;
struct sentry *sptr;
struct mblock *mptr;
SYSCALL pfintr();
/*********************/
set_evec(14, pfintr);
pptr = &proctab[NULLPROC]; /* initialize null process entry */
/*********************/
numproc = 0; /* initialize system variables */
nextproc = NPROC-1;
nextsem = NSEM-1;
nextqueue = NPROC; /* q[0..NPROC-1] are processes */
/* initialize free memory list */
/* PC version has to pre-allocate 640K-1024K "hole" */
if (maxaddr+1 > HOLESTART) {
memlist.mnext = mptr = (struct mblock *) roundmb(&end);
mptr->mnext = (struct mblock *)HOLEEND;
mptr->mlen = (int) truncew(((unsigned) HOLESTART -
(unsigned)&end));
mptr->mlen -= 4;
mptr = (struct mblock *) HOLEEND;
mptr->mnext = 0;
mptr->mlen = (int) truncew((unsigned)maxaddr - HOLEEND -
NULLSTK);
/*
mptr->mlen = (int) truncew((unsigned)maxaddr - (4096 - 1024 ) * 4096 - HOLEEND - NULLSTK);
*/
} else {
/* initialize free memory list */
memlist.mnext = mptr = (struct mblock *) roundmb(&end);
mptr->mnext = 0;
mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end -
NULLSTK);
}
for (i=0 ; i<NPROC ; i++) /* initialize process table */
proctab[i].pstate = PRFREE;
#ifdef MEMMARK
_mkinit(); /* initialize memory marking */
#endif
#ifdef RTCLOCK
clkinit(); /* initialize r.t.clock */
#endif
mon_init(); /* init monitor */
#ifdef NDEVS
for (i=0 ; i<NDEVS ; i++ ) {
init_dev(i);
}
#endif
pptr = &proctab[NULLPROC]; /* initialize null process entry */
pptr->pstate = PRCURR;
for (j=0; j<7; j++)
pptr->pname[j] = "prnull"[j];
pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK;
pptr->pbase = (WORD) maxaddr - 3;
/*
pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK - (4096 - 1024 )*4096;
pptr->pbase = (WORD) maxaddr - 3 - (4096-1024)*4096;
*/
pptr->pesp = pptr->pbase-4; /* for stkchk; rewritten before used */
*( (int *)pptr->pbase ) = MAGIC;
pptr->paddr = (WORD) nulluser;
pptr->pargs = 0;
pptr->pprio = 0;
currpid = NULLPROC;
for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */
(sptr = &semaph[i])->sstate = SFREE;
sptr->sqtail = 1 + (sptr->sqhead = newqueue());
}
rdytail = 1 + (rdyhead=newqueue());/* initialize ready list */
init_bsm();
init_frm();
kprintf("initialize page tables for null process\n");
init_glb_pgs(glb_pg_tbl_frm_mapping);
// init pg dir for proc 0
frame_t *pg_dir = get_free_frame();
init_pg_dir(pg_dir, NULLPROC);
pptr->pdbr = pg_dir->frm_num;
pptr->pd = pg_dir;
return(OK);
}
//------------------------------------------------------------------------
// sysinit -- initialize all Xinu data structures and devices
//------------------------------------------------------------------------
static int
sysinit(void)
{
static int (*nulluserp)() = &nulluser;
static uword *nulluserpp = (uword *)&nulluserp;
struct pentry *pptr;
struct mblock *mptr;
// initialize system variables
numproc = 0;
nextproc = NPROC - 1;
nextsem = NSEM - 1;
nextqueue = NPROC; // q[0..NPROC-1] are processes
// initialize free memory list
memlist.mnext = mptr = (struct mblock *)roundew(&end);
mptr->mnext = (struct mblock *)NULL;
mptr->mlen = (uword)truncew((uintptr_t)maxaddr - NULLSTK - (uintptr_t)&end);
// initialize process table
for (int k = 0; k < NPROC; k++)
proctab[k].pstate = PRFREE;
// initialize null process entry
pptr = &proctab[NULLPROC];
pptr->pstate = PRCURR;
pptr->pprio = 0;
strlcpy(pptr->pname, "prnull", PNMLEN);
pptr->plimit = ((char *)maxaddr) - NULLSTK - sizeof(uword);
pptr->pbase = (char *)maxaddr;
*((uword *)pptr->pbase) = MAGIC;
pptr->paddr = (char *)(*nulluserpp);
pptr->phasmsg = FALSE;
pptr->pargs = 0;
currpid = NULLPROC;
// initialize semaphores
for (int k = 0; k < NSEM; k++) {
struct sentry *sptr = &semaph[k];
sptr->sstate = SFREE;
sptr->sqtail = 1 + (sptr->sqhead = newqueue());
}
// initialize ready list
rdyhead = newqueue();
rdytail = 1 + rdyhead;
// initialize memory marking
_mkinit();
// initialize r.t.clock
clkinit();
// initialize disk buffers
dskdbp = mkpool(DBUFSIZ, NDBUFF);
dskrbp = mkpool(DREQSIZ, NDREQ);
// initialize devices
for (int k = 0; k < NDEVS; k++)
init(k);
return OK;
}
/**
* Intializes all Xinu data structures and devices.
* @return OK if everything is initialized successfully
*/
static int sysinit(void)
{
int i;
void *userheap; /* pointer to user memory heap */
struct thrent *thrptr; /* thread control block pointer */
device *devptr; /* device entry pointer */
struct sement *semptr; /* semaphore entry pointer */
struct memblock *pmblock; /* memory block pointer */
struct bfpentry *bfpptr;
/* Initialize system variables */
/* Count this NULLTHREAD as the first thread in the system. */
thrcount = 1;
kprintf("variable i in this function is at 0x%x\r\n", &i);
kprintf("this function sysinit is at 0x%x\r\n", &sysinit);
kprintf("_start is at 0x%x\r\n", _start);
kprintf("_end is at (the end) at 0x%x\r\n", &_end);
kprintf("readylist is at 0x%x\r\n", &readylist);
kprintf("kputc is at 0x%x\r\n", &kputc);
kprintf("NTHREAD is %d\r\n", NTHREAD);
kprintf("memheap is 0x%x\r\n", memheap);
/* Initialize free memory list */
memheap = roundmb(memheap);
platform.maxaddr = truncmb(platform.maxaddr);
kprintf("platform.maxaddr is 0x%x\r\n", platform.maxaddr);
memlist.next = pmblock = (struct memblock *)memheap;
memlist.length = (uint)(platform.maxaddr - memheap);
pmblock->next = NULL;
pmblock->length = (uint)(platform.maxaddr - memheap);
/* Initialize thread table */
for (i = 0; i < NTHREAD; i++)
{
thrtab[i].state = THRFREE;
}
kprintf("thrtab is at 0x%x, size %d\r\n", thrtab, sizeof(thrtab));
/* initialize null thread entry */
thrptr = &thrtab[NULLTHREAD];
thrptr->state = THRCURR;
thrptr->prio = 0;
strncpy(thrptr->name, "prnull", 7);
thrptr->stkbase = (void *)&_end;
thrptr->stklen = (ulong)memheap - (ulong)&_end;
thrptr->stkptr = 0;
thrptr->memlist.next = NULL;
thrptr->memlist.length = 0;
thrcurrent = NULLTHREAD;
kprintf("&_end is 0x%x\n", &_end);
/* Initialize semaphores */
for (i = 0; i < NSEM; i++)
{
semptr = &semtab[i];
semptr->state = SFREE;
semptr->count = 0;
semptr->queue = queinit();
}
kprintf("NPOOL is %d\n", NPOOL);
/* Initialize buffer pools */
for (i = 0; i < NPOOL; i++)
{
bfpptr = &bfptab[i];
bfpptr->state = BFPFREE;
}
kprintf("calling queinit() for readylist\r\n");
/* initialize thread ready list */
readylist = queinit();
#if SB_BUS
backplaneInit(NULL);
#endif /* SB_BUS */
#if RTCLOCK
/* initialize real time clock */
kprintf("Clock being initialized.\r\n" );
clkinit();
#endif /* RTCLOCK */
#ifdef UHEAP_SIZE
/* Initialize user memory manager */
userheap = stkget(UHEAP_SIZE);
if (SYSERR != (int)userheap)
{
userheap = (void *)((uint)userheap - UHEAP_SIZE + sizeof(int));
memRegionInit(userheap, UHEAP_SIZE);
/* initialize memory protection */
safeInit();
/* initialize kernel page mappings */
safeKmapInit();
}
#else
userheap = NULL;
#endif /* UHEAP_SIZE */
#if USE_TLB
/* initialize TLB */
tlbInit();
/* register system call handler */
exceptionVector[EXC_SYS] = syscall_entry;
#endif /* USE_TLB */
#if NMAILBOX
/* intialize mailboxes */
mailboxInit();
#endif
#if NDEVS
for (i = 0; i < NDEVS; i++)
{
if (!isbaddev(i))
{
devptr = (device *)&devtab[i];
(devptr->init) (devptr);
}
}
#endif
#if 0
#if NVRAM
nvramInit();
#endif
kprintf("SO MUCH MORE NOT done with sysinit()\r\n");
#if NNETIF
netInit();
#endif
kprintf("NOT done with sysinit()\r\n");
#if GPIO
gpioLEDOn(GPIO_LED_CISCOWHT);
#endif
#endif
kprintf("done with sysinit()\r\n");
return OK;
}
static void sysinit(void)
{
int32 i;
struct procent *prptr; /* ptr to process table entry */
struct dentry *devptr; /* ptr to device table entry */
struct sentry *semptr; /* prr to semaphore table entry */
struct memblk *memptr; /* ptr to memory block */
/* Initialize the interrupt vectors */
initevec();
/* Initialize system variables */
/* Count the Null process as the first process in the system */
prcount = 1;
/* Scheduling is not currently blocked */
Defer.ndefers = 0;
/* Initialize the free memory list */
/* Note: PC version has to pre-allocate 640K-1024K "hole" */
maxheap = (void *)MAXADDR;
minheap = &end;
memptr = memlist.mnext = (struct memblk *)roundmb(minheap);
if ((char *)(maxheap+1) > HOLESTART) {
/* create two blocks that straddle the hole */
memptr->mnext = (struct memblk *)HOLEEND;
memptr->mlength = (int) truncmb((unsigned) HOLESTART -
(unsigned)&end - 4);
memptr = (struct memblk *) HOLEEND;
memptr->mnext = (struct memblk *) NULL;
memptr->mlength = (int) truncmb( (uint32)maxheap -
(uint32)HOLEEND - NULLSTK);
} else {
/* initialize free memory list to one block */
memlist.mnext = memptr = (struct memblk *) roundmb(&end);
memptr->mnext = (struct memblk *) NULL;
memptr->mlength = (uint32) truncmb((uint32)maxheap -
(uint32)&end - NULLSTK);
}
/* Initialize process table entries free */
for (i = 0; i < NPROC; i++) {
prptr = &proctab[i];
prptr->prstate = PR_FREE;
prptr->prname[0] = NULLCH;
prptr->prstkbase = NULL;
prptr->prprio = 0;
}
/* Initialize the Null process entry */
prptr = &proctab[NULLPROC];
prptr->prstate = PR_CURR;
prptr->prprio = 0;
strncpy(prptr->prname, "prnull", 7);
prptr->prstkbase = getstk(NULLSTK);
prptr->prstklen = NULLSTK;
prptr->prstkptr = 0;
currpid = NULLPROC;
/* Initialize semaphores */
for (i = 0; i < NSEM; i++) {
semptr = &semtab[i];
semptr->sstate = S_FREE;
semptr->scount = 0;
semptr->squeue = newqueue();
}
/* Initialize buffer pools */
bufinit();
/* Create a ready list for processes */
readylist = newqueue();
/* Initialize the PCI bus */
pci_init();
/* Initialize the real time clock */
clkinit();
for (i = 0; i < NDEVS; i++) {
if (! isbaddev(i)) {
devptr = (struct dentry *) &devtab[i];
(devptr->dvinit) (devptr);
}
}
return;
}
static void sysinit(void)
{
int32 i;
struct procent *prptr; /* ptr to process table entry */
struct dentry *devptr; /* ptr to device table entry */
struct sentry *semptr; /* prr to semaphore table entry */
struct memblk *memptr; /* ptr to memory block */
/* Initialize system variables */
/* Count the Null process as the first process in the system */
prcount = 1;
/* Scheduling is not currently blocked */
Defer.ndefers = 0;
/* Initialize the free memory list */
maxheap = (void *)addressp2k(MAXADDR);
memlist.mnext = (struct memblk *)minheap;
/* Overlay memblk structure on free memory and set fields */
memptr = (struct memblk *)minheap;
memptr->mnext = NULL;
memptr->mlength = memlist.mlength = (uint32)(maxheap - minheap);
/* Initialize process table entries free */
for (i = 0; i < NPROC; i++) {
prptr = &proctab[i];
prptr->prstate = PR_FREE;
prptr->prname[0] = NULLCH;
prptr->prstkbase = NULL;
prptr->prprio = 0;
}
/* Initialize the Null process entry */
prptr = &proctab[NULLPROC];
prptr->prstate = PR_CURR;
prptr->prprio = 0;
strncpy(prptr->prname, "prnull", 7);
prptr->prstkbase = minheap;
prptr->prstklen = NULLSTK;
prptr->prstkptr = 0;
currpid = NULLPROC;
/* Initialize semaphores */
for (i = 0; i < NSEM; i++) {
semptr = &semtab[i];
semptr->sstate = S_FREE;
semptr->scount = 0;
semptr->squeue = newqueue();
}
/* Initialize buffer pools */
bufinit();
/* Create a ready list for processes */
readylist = newqueue();
/* Initialize real time clock */
clkinit();
/* Initialize non-volative RAM storage */
nvramInit();
for (i = 0; i < NDEVS; i++) {
if (! isbaddev(i)) {
devptr = (struct dentry *) &devtab[i];
(devptr->dvinit) (devptr);
}
}
/**
* Initialize the last two entries in lflcblk used for
* directory manipulation.
*/
struct dentry dircblk;
dircblk.dvminor = Nlfl;
lflInit(&dircblk);
dircblk.dvminor = Nlfl+1;
lflInit(&dircblk);
lfDirCblkMutex = semcreate(1);
open(ETHER0,NULL, NULL);
/* Create a process to handle network packets */
resume((create(netin, 8192, 500, "netin", 0)) );
return;
}
/*------------------------------------------------------------------------
*
* sysinit - Initialize all Xinu data structures and devices
*
*------------------------------------------------------------------------
*/
static void sysinit()
{
int32 i;
struct procent *prptr; /* Ptr to process table entry */
struct sentry *semptr; /* Ptr to semaphore table entry */
/* Platform Specific Initialization */
platinit();
/* Initialize the interrupt vectors */
initevec();
/* Initialize free memory list */
meminit();
/* Initialize system variables */
/* Count the Null process as the first process in the system */
prcount = 1;
/* Scheduling is not currently blocked */
Defer.ndefers = 0;
/* Initialize process table entries free */
for (i = 0; i < NPROC; i++) {
prptr = &proctab[i];
prptr->prstate = PR_FREE;
prptr->prname[0] = NULLCH;
prptr->prstkbase = NULL;
prptr->prprio = 0;
prptr->prcpu_wait_ratio = 0; // Initializing waits at creation for each process to 0
}
/* Initialize the Null process entry */
prptr = &proctab[NULLPROC];
prptr->prstate = PR_CURR;
/* Setting the null process initial priority as the highest so that all other processes can run before it*/
prptr->initprio = MAXKEY;
prptr->prcpumsec = 0;
prptr->prctxswintime = 0;
/* Reversing the priority order in case of Dynamic Process Scheduling (Q4 and Q5.) */
if (LAB2COND) {
prptr->prprio = MAXKEY;// prptr->initprio + prptr->prcpumsec; //Highest int16 value. The Null process must take the lowest priority.
}
else {
prptr->prprio = MINPRIO;
}
strncpy(prptr->prname, "prnull", 7);
prptr->prstkbase = getstk(NULLSTK);
prptr->prstklen = NULLSTK;
prptr->prstkptr = 0;
currpid = NULLPROC;
/* Initialize semaphores */
for (i = 0; i < NSEM; i++) {
semptr = &semtab[i];
semptr->sstate = S_FREE;
semptr->scount = 0;
semptr->squeue = newqueue();
}
/* Initialize buffer pools */
bufinit();
/* Create a ready list for processes */
readylist = newqueue();
initialize_mltfbq();
init_recieverq();
/* Initialize the real time clock */
clkinit();
for (i = 0; i < NDEVS; i++) {
init(i);
}
return;
}
static void sysinit(void)
{
int32 i;
struct pipentry *pipptr; /* ptr to pipe tabe entry */
struct procent *prptr; /* ptr to process table entry */
struct dentry *devptr; /* ptr to device table entry */
struct sentry *semptr; /* prr to semaphore table entry */
struct memblk *memptr; /* ptr to memory block */
/* Initialize system variables */
/* Count the Null process as the first process in the system */
prcount = 1;
/* Scheduling is not currently blocked */
Defer.ndefers = 0;
/* Initialize the free memory list */
maxheap = (void *)addressp2k(MAXADDR);
memlist.mnext = (struct memblk *)minheap;
/* Overlay memblk structure on free memory and set fields */
memptr = (struct memblk *)minheap;
memptr->mnext = NULL;
memptr->mlength = memlist.mlength = (uint32)(maxheap - minheap);
/* Initialize pipe table entries free */
for (i = 0; i < NPIPE; i++) {
pipptr = &piptab[i];
pipptr->pipstate = PR_FREE;
pipptr->owner = NPROC + 1;
pipptr->rdend = NPROC + 1;
pipptr->wrtend = NPROC + 1;
pipptr->nextpos = -1;
pipptr->buffer[0] = NULL;
}
/* Initialize process table entries free */
for (i = 0; i < NPROC; i++) {
prptr = &proctab[i];
prptr->prstate = PR_FREE;
prptr->prname[0] = NULLCH;
prptr->prstkbase = NULL;
prptr->prprio = 0;
}
/* Initialize the Null process entry */
prptr = &proctab[NULLPROC];
prptr->prstate = PR_CURR;
prptr->prprio = 0;
strncpy(prptr->prname, "prnull", 7);
prptr->prstkbase = minheap;
prptr->prstklen = NULLSTK;
prptr->prstkptr = 0;
currpid = NULLPROC;
/* Initialize semaphores */
for (i = 0; i < NSEM; i++) {
semptr = &semtab[i];
semptr->sstate = S_FREE;
semptr->scount = 0;
semptr->squeue = newqueue();
}
/* Initialize buffer pools */
bufinit();
/* Create a ready list for processes */
readylist = newqueue();
/* Initialize real time clock */
clkinit();
for (i = 0; i < NDEVS; i++) {
if (! isbaddev(i)) {
devptr = (struct dentry *) &devtab[i];
(devptr->dvinit) (devptr);
}
}
return;
}
