terminal-gugler/jslinux.js
Marcos Elias Rios Nuñez 5828109083 Comit inicial
2024-12-15 11:53:42 -03:00

107 lines
2.7 KiB
JavaScript

/*
Linux launcher
Copyright (c) 2011-2012 Fabrice Bellard
Redistribution or commercial use is prohibited without the author's
permission.
*/
"use strict";
var term, pc, boot_start_time, init_state;
function term_start()
{
term = new Term(80, 30, term_handler);
term.open();
term.write("Te damos la bienvenida a a la consola virtual GUGLER...\r\n");
}
/* send chars to the serial port */
function term_handler(str)
{
pc.serial.send_chars(str);
}
/* just used to display the boot time in the VM */
function get_boot_time()
{
return (+new Date()) - boot_start_time;
}
function start()
{
var params;
init_state = new Object();
params = new Object();
/* serial output chars */
params.serial_write = term.write.bind(term);
/* memory size (in bytes) */
params.mem_size = 16 * 1024 * 1024;
/* clipboard I/O */
params.get_boot_time = get_boot_time;
pc = new PCEmulator(params);
init_state.params = params;
pc.load_binary("vmlinux-2.6.20.bin", 0x00100000, start2);
}
function start2(ret)
{
if (ret < 0)
return;
init_state.start_addr = 0x10000;
init_state.initrd_size = 0;
//pc.load_binary("linuxstart.bin", init_state.start_addr, start3);
pc.load_binary("linuxstart.bin", init_state.start_addr, start3_);
}
function start3(ret)
{
var block_list;
if (ret < 0)
return;
/* Preload blocks so that the boot time does not depend on the
* time to load the required disk data (optional) */
block_list = [ 0, 7, 3, 643, 720, 256, 336, 644, 781, 387, 464, 475, 131, 589, 468, 472, 474, 776, 777, 778, 779, 465, 466, 473, 467, 469, 470, 512, 592, 471, 691, 697, 708, 792, 775, 769 ];
pc.ide0.drives[0].bs.preload(block_list, start4);
}
function start3_(ret)
{
if (ret < 0)
return;
pc.load_binary("root.bin", 0x00400000, start4);
}
function start4(ret)
{
var cmdline_addr;
if (ret < 0)
return;
/* Assume booting from /dev/ram0 - result of previous load_binary("root.bin") call equals to the
* size of the ram image.
*/
init_state.initrd_size = ret;
/* set the Linux kernel command line */
cmdline_addr = 0xf800;
//pc.cpu.write_string(cmdline_addr, "console=ttyS0 root=/dev/hda ro init=/sbin/init notsc=1 hdb=none");
pc.cpu.write_string(cmdline_addr, "console=ttyS0 root=/dev/ram0 rw init=/sbin/init notsc=1 ");
pc.cpu.eip = init_state.start_addr;
pc.cpu.regs[0] = init_state.params.mem_size; /* eax */
pc.cpu.regs[3] = init_state.initrd_size; /* ebx = initrd_size (optional ram disk - old jslinux booting) */
pc.cpu.regs[1] = cmdline_addr; /* ecx */
boot_start_time = (+new Date());
pc.start();
}
term_start();