void arch_post_mm_init(void)
{
if (config.cpu_active == 1) {
/* Initialize IRQ routing */
irq_init(IRQ_COUNT, IRQ_COUNT);
/* hard clock */
i8254_init();
#if (defined(CONFIG_FB) || defined(CONFIG_EGA))
bool bfb = false;
#endif
#ifdef CONFIG_FB
bfb = bfb_init();
#endif
#ifdef CONFIG_EGA
if (!bfb) {
outdev_t *egadev = ega_init(EGA_BASE, EGA_VIDEORAM);
if (egadev)
stdout_wire(egadev);
}
#endif
/* Merge all memory zones to 1 big zone */
zone_merge_all();
}
}
static PSD
VGA_open(PSD psd)
{
#if _MINIX
int s;
struct mio_ldt86 mldt86;
struct segdesc_s { /* segment descriptor for protected mode */
u16_t limit_low;
u16_t base_low;
u8_t base_middle;
u8_t access; /* |P|DL|1|X|E|R|A| */
u8_t granularity; /* |G|X|0|A|LIMT| */
u8_t base_high;
} *dp;
int fd;
unsigned long vidmem = 0xA0000;
fd = open("/dev/mem", O_RDONLY);
dp = (struct segdesc_s *) mldt86.entry;
mldt86.idx = 1;
s = ioctl(fd, MIOCGLDT86, &mldt86);
dp->limit_low = 0xFFFF;
dp->base_low = (vidmem >> 0) & 0xFFFF;
dp->base_middle = (vidmem >> 16) & 0xFF;
dp->base_high = (vidmem >> 24) & 0xFF;
dp->granularity |= 0x80;
mldt86.idx = 2;
s = ioctl(fd, MIOCSLDT86, &mldt86);
close(fd);
#endif
/* setup operating mode from environment variable*/
if(getenv("EGAMODE"))
VGAMODE = FALSE;
else VGAMODE = TRUE;
#if ELKS
/* disallow console switching while in graphics mode*/
if(ioctl(0, DCGET_GRAPH) != 0)
return NULL;
#endif
#if HWINIT
/* enter graphics mode*/
ega_hwinit();
#else
/* init bios graphics mode*/
int10(VGAMODE? FNGR640x480: FNGR640x350, 0);
#endif
/* init driver variables depending on ega/vga mode*/
psd->xres = psd->xvirtres = 640;
psd->yres = psd->yvirtres = VGAMODE? 480: 350;
psd->planes = 4;
psd->bpp = 4;
psd->ncolors = 16;
psd->pixtype = MWPF_PALETTE;
#if HAVEBLIT
psd->flags = PSF_SCREEN | PSF_HAVEBLIT;
#else
psd->flags = PSF_SCREEN;
#endif
/* init planes driver (sets psd->addr and psd->linelen)*/
ega_init(psd);
#if ROMFONT
/* init pc rom font routines*/
pcrom_init(psd);
#endif
#if 0
ROM_CHAR_HEIGHT = VGAMODE? 16: 14;
#endif
/* FIXME: add palette code*/
return psd;
}
