// Entry point for Power On Self Test (POST) - the BIOS initilization
// phase. This function makes the memory at 0xc0000-0xfffff
// read/writable and then calls dopost().
void VISIBLE32FLAT
handle_post(void)
{
#if CONFIG_PRINT_TIMESTAMPS
u64 tscval;
#endif
if (!CONFIG_QEMU && !CONFIG_COREBOOT)
return;
serial_debug_preinit();
debug_banner();
#if CONFIG_PRINT_TIMESTAMPS
tscval = rdtscll();
dprintf(1, "TSC: Start of seabios: 0x%08lx_%08lx\n",
(unsigned long)(tscval >> 32),
(unsigned long)tscval);
#endif
// Check if we are running under Xen.
xen_preinit();
// Allow writes to modify bios area (0xf0000)
make_bios_writable();
// Now that memory is read/writable - start post process.
dopost();
}
void
qemu_prep_reset(void)
{
if (CONFIG_COREBOOT)
return;
// QEMU doesn't map 0xc0000-0xfffff back to the original rom on a
// reset, so do that manually before invoking a hard reset.
make_bios_writable();
extern u8 code32flat_start[], code32flat_end[];
memcpy(code32flat_start, code32flat_start + BIOS_SRC_OFFSET
, code32flat_end - code32flat_start);
}
// Entry point for Power On Self Test (POST) - the BIOS initilization
// phase. This function makes the memory at 0xc0000-0xfffff
// read/writable and then calls dopost().
void VISIBLE32FLAT
handle_post(void)
{
if (!CONFIG_QEMU && !CONFIG_COREBOOT)
return;
serial_debug_preinit();
debug_banner();
// Check if we are running under Xen.
xen_preinit();
// Allow writes to modify bios area (0xf0000)
make_bios_writable();
// Now that memory is read/writable - start post process.
dopost();
}
// Entry point for Power On Self Test (POST) - the BIOS initilization
// phase. This function makes the memory at 0xc0000-0xfffff
// read/writable and then calls dopost().
void VISIBLE32FLAT
handle_post(void)
{
debug_serial_setup();
dprintf(1, "Start bios (version %s)\n", VERSION);
// Enable CPU caching
setcr0(getcr0() & ~(CR0_CD|CR0_NW));
// Clear CMOS reboot flag.
outb_cmos(0, CMOS_RESET_CODE);
// Make sure legacy DMA isn't running.
init_dma();
// Check if we are running under Xen.
xen_probe();
// Allow writes to modify bios area (0xf0000)
make_bios_writable();
// Now that memory is read/writable - start post process.
dopost();
}