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/**
** Proll (PROM replacement)
** Copyright 1999 Pete Zaitcev
** This code is licensed under GNU General Public License.
**/
#include <stdarg.h>
// #include <asm/contregs.h>
#include <asi.h>
#include "pgtsrmmu.h"
#include "iommu.h" /* Typical SBus IOMMU for sun4m */
#include "phys_jj.h"
#include "vconsole.h"
#include "version.h"
#include <general.h> /* __P() */
#include <net.h> /* init_net() */
#include <romlib.h> /* we are a provider for part of this. */
#include <netpriv.h> /* myipaddr */
#include <arpa.h>
#include <system.h> /* our own prototypes */
void init_idprom(void);
struct vconterm dp0;
struct mem cmem; /* Current memory, virtual */
struct mem cio; /* Current I/O space */
struct phym pmem; /* Current phys. mem. */
struct iommu ciommu; /* Our IOMMU on sun4m */
static char *hw_idprom;
/*
*/
void prolmain()
{
static char fname[14] = "00000000.PROL";
static struct banks bb;
int nmegs;
int i;
unsigned int hiphybas;
void *romvec;
vcon_init(&dp0, PHYS_JJ_TCX_FB);
printk("PROLL %s MrCoffee\n", PROLL_VERSION_STRING);
get_banks_layout(&bb, BANKS_JJ);
if (bb.nbanks <= 0) {
printk("No memory found\n");
return;
} else {
nmegs = 0;
for (i = 0; i < bb.nbanks; i++) {
printk("bank %d 0x%x[0x%x]\n", i,
bb.bankv[i].start, bb.bankv[i].length);
nmegs += bb.bankv[i].length/(1024*1024);
}
printk("%d MB total\n", nmegs);
}
i = bb.nbanks - 1;
hiphybas = bb.bankv[i].start + bb.bankv[i].length - PROLSIZE;
/* printk("high phys base 0x%x\n", hiphybas); */ /* P3 */
/*
* We generate tables and switch two times.
* We start off being in low physical memory (LOADBASE) and
* mapped to high virtual (PROLBASE), running off PROM tables.
* These tables are located somewhere in upper physical so
* when we copy ourselves up we may step on them. The
* solution is to create temporary pages in low physical memory,
* then use them to move ourselves high. After that we may
* create new tables in high physical memory.
*/
mem_init(&cmem, (char *) &_end, (char *)(PROLBASE+PROLSIZE));
makepages(&pmem, LOADBASE);
#if 0
proc_tablewalk(0, PROLBASE+PROLSIZE-PAGE_SIZE);
mem_tablewalk((pmem.pctp[0]&(~0xF))<<4, PROLBASE+PROLSIZE-PAGE_SIZE);
#endif
init_mmu_swift((unsigned int)pmem.pctp - PROLBASE + LOADBASE);
move_phys_high(hiphybas, PROLSIZE);
/*
* We did not use the dynamic memory for anything but
* page tables, which are left down in low memory. Reinitiate cmem.
*/
mem_fini(&cmem);
mem_init(&cmem, (char *) &_end, (char *)(PROLBASE+PROLSIZE));
makepages(&pmem, hiphybas);
init_mmu_swift((unsigned int)pmem.pctp - PROLBASE + hiphybas);
mem_init(&cio, (char *)(PROLBASE+PROLSIZE),
(char *)(PROLBASE+PROLSIZE+IOMAPSIZE));
iommu_init(&ciommu, hiphybas);
/*
*/
init_idprom();
sched_init();
le_probe();
init_net();
#if 0 /* RARP */
if (rarp() != 0) fatal();
/* printrarp(); */
xtoa(myipaddr, fname, 8);
if (load(servaddr, fname) != 0) fatal();
#else
if (bootp() != 0) fatal();
/*
* boot_rec.bp_file cannot be used because system PROM
* uses it to locate ourselves. If we load from boot_rec.bp_file,
* we will loop reloading PROLL over and over again.
* Thus we use traditional PROLL scheme HEXIPADDR.PROL (single L).
*/
xtoa(myipaddr, fname, 8);
if (load(boot_rec.bp_siaddr, fname) != 0) fatal();
#endif
romvec = init_openprom(bb.nbanks, bb.bankv, hiphybas);
printk("Memory used: virt 0x%x:0x%x[%dK] iomap 0x%x:0x%x\n",
PROLBASE, (int)cmem.curp, ((unsigned) cmem.curp - PROLBASE)/1024,
(int)cio.start, (int)cio.curp);
set_timeout(5); while (!chk_timeout()) { } /* P3: let me read */
{
void (*entry)(void *, int) = (void (*)(void*, int)) LOADBASE;
entry(romvec, 0);
}
mem_fini(&cmem);
vcon_fini(&dp0);
}
/*
* dvma_alloc over iommu_alloc.
*/
void *dvma_alloc(int size, unsigned int *pphys)
{
return iommu_alloc(&ciommu, size, pphys);
}
/*
*/
void udelay(unsigned long usecs)
{
int i, n;
n = usecs*50;
for (i = 0; i < n; i++) { }
}
void init_idprom()
{
char *va_prom;
if ((va_prom = map_io(PHYS_JJ_EEPROM, PHYS_JJ_EEPROM_SIZE)) == NULL) {
printk("init_idprom: cannot map eeprom\n");
fatal();
}
bcopy(va_prom + PHYS_JJ_IDPROM_OFF, idprom, IDPROM_SIZE);
/*
* hw_idprom is not used anywhere.
* It's just as we hate to leave hanging pointers (I/O page here).
*/
hw_idprom = va_prom;
}
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