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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_openprom_qemu(int bankc, struct bank *bankv, unsigned hiphybas, const char *cmdline, char boot_device, int nographic);
int vcon_zs_init(struct vconterm *t, unsigned int a0);
int vcon_zs_write(struct vconterm *t, char *data, int leng);
static 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 struct {
const char id[16];
unsigned int version;
char pad1[0x1c]; // Pad to 0x30
unsigned int ram_size;
char boot_device;
unsigned int load_addr, kernel_size;
unsigned int cmdline, cmdline_len;
char pad2[0x0c]; // Pad to 0x54
unsigned short width, height, depth;
} *hw_idprom;
int ignore_fault, fault_ignored;
void *printk_fn;
unsigned int q_height, q_width;
/*
*/
void prolmain()
{
static char fname[14];
static struct banks bb;
unsigned int hiphybas;
const void *romvec;
unsigned int ram_size;
char nographic;
nographic = ldb_bypass(PHYS_JJ_EEPROM + 0x2F);
if (!nographic) {
q_width = ldh_bypass(PHYS_JJ_EEPROM + 0x54);
q_height = ldh_bypass(PHYS_JJ_EEPROM + 0x56);
vcon_init(&dp0, PHYS_JJ_TCX_FB);
printk_fn = vcon_write;
}
else {
vcon_zs_init(&dp0, 0x71100004);
printk_fn = vcon_zs_write;
}
printk("PROLL %s QEMU\n", PROLL_VERSION_STRING);
ram_size = ld_bypass(PHYS_JJ_EEPROM + 0x30);
printk("%d MB total\n", ram_size/(1024*1024));
bb.nbanks = 1;
bb.bankv[0].start = 0;
bb.bankv[0].length = ram_size;
hiphybas = ram_size - PROLSIZE;
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();
printk("NVRAM: id %s version %d\n", hw_idprom->id, hw_idprom->version);
if (!nographic)
printk("Prom console: TCX %dx%d\n", q_width, q_height);
else
printk("Prom console: serial\n");
sched_init();
le_probe();
init_net();
printk("Boot device: %c\n", hw_idprom->boot_device);
if (hw_idprom->boot_device == 'n') {
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);
fname[9] = '.';
fname[10] = 'P';
fname[11] = 'R';
fname[12] = 'O';
fname[13] = 'L';
fname[14] = 0;
if (load(boot_rec.bp_siaddr, fname) != 0) fatal();
}
romvec = init_openprom_qemu(bb.nbanks, bb.bankv, hiphybas,
(void *)hw_idprom->cmdline, hw_idprom->boot_device, nographic);
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);
{
void (*entry)(const void *, int, int, int, int) = (void *) hw_idprom->load_addr;
printk("Kernel loaded at 0x%x, size %dK, command line = '%s'\n",
*entry, hw_idprom->kernel_size/1024, hw_idprom->cmdline);
entry(romvec, 0, 0, 0, 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)
{
// Qemu hardware is perfect and does not need any delays!
}
static void init_idprom()
{
void *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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