uint16_t get_root_dev(void)
{
uint16_t rd = BAD_ROOT_DEV;
if (cmdline && *cmdline)
rd = bootdevice(cmdline);
while(rd == BAD_ROOT_DEV){
kputs("bootdev: ");
udata.u_base = (uint8_t *)bootline;
udata.u_sysio = 1;
udata.u_count = sizeof(bootline)-1;
udata.u_euid = 0; /* Always begin as superuser */
cdread(TTYDEV, O_RDONLY); /* read root filesystem name from tty */
rd = bootdevice(bootline);
}
return rd;
}
void fuzix_main(void)
{
/* setup state */
inint = false;
udata.u_insys = true;
ramtop = PROGTOP;
tty_init();
if (d_open(TTYDEV, 0) != 0)
panic("no tty");
/* Sign on messages (stashed in a buffer so we can bin them */
kprintf((char *)bufpool[0].bf_data, uname_str);
#ifndef SWAPDEV
#ifdef PROC_SIZE
maxproc = procmem / PROC_SIZE;
/* Check we don't exceed the process table size limit */
if (maxproc > PTABSIZE) {
kprintf((char *)bufpool[1].bf_data, maxproc);
maxproc = PTABSIZE;
}
#else
maxproc = PTABSIZE;
#endif
#else
maxproc = PTABSIZE;
#endif
/* Parameters message */
kprintf((char *)bufpool[2].bf_data, ramsize, procmem, maxproc);
/* Now blow away the strings */
bufinit();
pagemap_init();
create_init();
kprintf("%x:%x\n", udata.u_page, udata.u_page2);
kprintf("%x:%x\n", udata.u_ptab->p_page, udata.u_ptab->p_page2);
kputs("Enabling interrupts ... ");
ei();
kputs("ok.\n");
/* initialise hardware devices */
device_init();
root_dev = DEFAULT_ROOT;
if (cmdline && *cmdline) {
while (*cmdline == ' ')
++cmdline;
root_dev = *cmdline - '0';
} else {
kputs("bootdev: ");
udata.u_base = bootline;
udata.u_sysio = 1;
udata.u_count = 2;
udata.u_euid = 0; /* Always begin as superuser */
cdread(TTYDEV, O_RDONLY); /* read root filesystem name from tty */
if (*bootline >= '0')
root_dev = *bootline - '0';
}
/* Mount the root device */
kprintf("Mounting root fs (root_dev=%d): ", root_dev);
if (fmount(root_dev, NULLINODE, 0))
panic("no filesys");
root = i_open(root_dev, ROOTINODE);
if (!root)
panic("no root");
kputs("OK\n");
i_ref(udata.u_cwd = root);
i_ref(udata.u_root = root);
rdtime32(&udata.u_time);
exec_or_die();
}
