void
qemu_platform_setup(void)
{
if (!CONFIG_QEMU)
return;
if (runningOnXen()) {
pci_probe_devices();
xen_hypercall_setup();
xen_biostable_setup();
return;
}
// Initialize pci
pci_setup();
smm_device_setup();
smm_setup();
// Initialize mtrr and smp
mtrr_setup();
smp_setup();
// Create bios tables
pirtable_setup();
mptable_setup();
smbios_setup();
if (CONFIG_FW_ROMFILE_LOAD) {
int loader_err;
dprintf(3, "load ACPI tables\n");
loader_err = romfile_loader_execute("etc/table-loader");
RsdpAddr = find_acpi_rsdp();
if (RsdpAddr)
return;
/* If present, loader should have installed an RSDP.
* Not installed? We might still be able to continue
* using the builtin RSDP.
*/
if (!loader_err)
warn_internalerror();
}
acpi_setup();
}
/* Fill in hypercall transfer pages. */
void xen_hypercall_setup(void)
{
u32 eax, ebx, ecx, edx;
xen_extraversion_t extraversion;
unsigned long i;
if (!runningOnXen())
return;
cpuid(xen_cpuid_base + 2, &eax, &ebx, &ecx, &edx);
xen_hypercall_page = (unsigned long)memalign_high(PAGE_SIZE, eax*PAGE_SIZE);
if (!xen_hypercall_page)
panic("unable to allocate Xen hypercall page\n");
dprintf(1, "Allocated Xen hypercall page at %lx\n", xen_hypercall_page);
for ( i = 0; i < eax; i++ )
wrmsr(ebx, xen_hypercall_page + (i << 12) + i);
/* Print version information. */
cpuid(xen_cpuid_base + 1, &eax, &ebx, &ecx, &edx);
hypercall_xen_version(XENVER_extraversion, extraversion);
dprintf(1, "Detected Xen v%u.%u%s\n", eax >> 16, eax & 0xffff, extraversion);
}
void
qemu_preinit(void)
{
qemu_detect();
if (!CONFIG_QEMU)
return;
if (runningOnXen()) {
xen_ramsize_preinit();
return;
}
if (!runningOnQEMU()) {
dprintf(1, "Warning: No QEMU Northbridge found (isapc?)\n");
PlatformRunningOn |= PF_QEMU;
kvm_detect();
}
// On emulators, get memory size from nvram.
u32 rs = ((rtc_read(CMOS_MEM_EXTMEM2_LOW) << 16)
| (rtc_read(CMOS_MEM_EXTMEM2_HIGH) << 24));
if (rs)
rs += 16 * 1024 * 1024;
else
rs = (((rtc_read(CMOS_MEM_EXTMEM_LOW) << 10)
| (rtc_read(CMOS_MEM_EXTMEM_HIGH) << 18))
+ 1 * 1024 * 1024);
RamSize = rs;
add_e820(0, rs, E820_RAM);
/* reserve 256KB BIOS area at the end of 4 GB */
add_e820(0xfffc0000, 256*1024, E820_RESERVED);
dprintf(1, "RamSize: 0x%08x [cmos]\n", RamSize);
}
