Connor Wood
44 lines
1.4 KiB
Rust
44 lines
1.4 KiB
Rust
use acpi;
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use syscall::io::{Io, Pio};
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#[no_mangle]
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pub unsafe extern fn kstop() -> ! {
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println!("kstop");
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// ACPI shutdown
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{
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let acpi = acpi::ACPI_TABLE.lock();
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if let Some(ref fadt) = acpi.fadt {
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let port = fadt.pm1a_control_block as u16;
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let mut val = 1 << 13;
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if let Some(ref namespace) = acpi.namespace {
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if let Some(s) = namespace.get("\\_S5") {
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if let Some(p) = s.get_as_package() {
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let slp_typa = p[0].get_as_integer().expect("SLP_TYPa is not an integer");
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let slp_typb = p[1].get_as_integer().expect("SLP_TYPb is not an integer");
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println!("Shutdown SLP_TYPa {:X}, SLP_TYPb {:X}", slp_typa, slp_typb);
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val |= slp_typa as u16;
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}
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}
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}
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println!("Shutdown with ACPI outw(0x{:X}, 0x{:X})", port, val);
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Pio::<u16>::new(port).write(val);
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}
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}
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// Magic shutdown code for bochs and qemu (older versions).
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for c in "Shutdown".bytes() {
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let port = 0x8900;
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println!("Shutdown with outb(0x{:X}, '{}')", port, c as char);
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Pio::<u8>::new(port).write(c);
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}
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// Magic code for VMWare. Also a hard lock.
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println!("Shutdown with cli hlt");
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asm!("cli; hlt" : : : : "intel", "volatile");
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unreachable!();
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}
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