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Enable multi-core on RV32.

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This commit is contained in:
WangRunji 2018-10-31 11:45:25 +08:00
parent 250f1385d3
commit 182c595a20
7 changed files with 11 additions and 15 deletions
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5
kernel/src/arch/riscv32/boot/trap.asm
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@ -13,7 +13,8 @@ _save_context:
# save x registers except x2 (sp) # save x registers except x2 (sp)
sw x1, 1*4(sp) sw x1, 1*4(sp)
sw x3, 3*4(sp) sw x3, 3*4(sp)
sw x4, 4*4(sp) # tp(x4) = hartid. DON'T change.
# sw x4, 4*4(sp)
sw x5, 5*4(sp) sw x5, 5*4(sp)
sw x6, 6*4(sp) sw x6, 6*4(sp)
sw x7, 7*4(sp) sw x7, 7*4(sp)
@ -73,7 +74,7 @@ _restore_context:
# restore x registers except x2 (sp) # restore x registers except x2 (sp)
lw x1, 1*4(sp) lw x1, 1*4(sp)
lw x3, 3*4(sp) lw x3, 3*4(sp)
lw x4, 4*4(sp) # lw x4, 4*4(sp)
lw x5, 5*4(sp) lw x5, 5*4(sp)
lw x6, 6*4(sp) lw x6, 6*4(sp)
lw x7, 7*4(sp) lw x7, 7*4(sp)

3
kernel/src/arch/riscv32/interrupt.rs
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@ -42,7 +42,7 @@ pub unsafe fn restore(flags: usize) {
#[no_mangle] #[no_mangle]
pub extern fn rust_trap(tf: &mut TrapFrame) { pub extern fn rust_trap(tf: &mut TrapFrame) {
use super::riscv::register::scause::{Trap, Interrupt as I, Exception as E}; use super::riscv::register::scause::{Trap, Interrupt as I, Exception as E};
trace!("Interrupt: {:?}", tf.scause.cause()); trace!("Interrupt @ CPU{}: {:?} ", super::cpu::id(), tf.scause.cause());
match tf.scause.cause() { match tf.scause.cause() {
Trap::Interrupt(I::SupervisorSoft) => ipi(), Trap::Interrupt(I::SupervisorSoft) => ipi(),
Trap::Interrupt(I::SupervisorTimer) => timer(), Trap::Interrupt(I::SupervisorTimer) => timer(),
@ -50,7 +50,6 @@ pub extern fn rust_trap(tf: &mut TrapFrame) {
Trap::Exception(E::UserEnvCall) => syscall(tf), Trap::Exception(E::UserEnvCall) => syscall(tf),
_ => ::trap::error(tf), _ => ::trap::error(tf),
} }
::trap::before_return();
trace!("Interrupt end"); trace!("Interrupt end");
} }

6
kernel/src/arch/riscv32/mod.rs
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@ -26,6 +26,9 @@ pub extern fn rust_main(hartid: usize, dtb: usize, hart_mask: usize) -> ! {
memory::init(); memory::init();
timer::init(); timer::init();
::process::init();
::thread::spawn(::fs::shell);
unsafe { cpu::start_others(hart_mask); } unsafe { cpu::start_others(hart_mask); }
::kmain(); ::kmain();
} }
@ -33,8 +36,7 @@ pub extern fn rust_main(hartid: usize, dtb: usize, hart_mask: usize) -> ! {
fn others_main() -> ! { fn others_main() -> ! {
interrupt::init(); interrupt::init();
timer::init(); timer::init();
cpu::send_ipi(0); ::kmain();
loop { }
} }
#[cfg(feature = "no_bbl")] #[cfg(feature = "no_bbl")]

1
kernel/src/arch/x86_64/interrupt/handler.rs
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@ -97,7 +97,6 @@ pub extern fn rust_trap(tf: &mut TrapFrame) {
T_DIVIDE | T_GPFLT | T_ILLOP => error(tf), T_DIVIDE | T_GPFLT | T_ILLOP => error(tf),
_ => panic!("Unhandled interrupt {:x}", tf.trap_num), _ => panic!("Unhandled interrupt {:x}", tf.trap_num),
} }
::trap::before_return();
} }
fn breakpoint() { fn breakpoint() {

3
kernel/src/arch/x86_64/mod.rs
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@ -47,6 +47,9 @@ pub extern "C" fn _start(boot_info: &'static BootInfo) -> ! {
driver::init(); driver::init();
::process::init();
::thread::spawn(::fs::shell);
AP_CAN_INIT.store(true, Ordering::Relaxed); AP_CAN_INIT.store(true, Ordering::Relaxed);
::kmain(); ::kmain();

5
kernel/src/lib.rs
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@ -62,11 +62,6 @@ pub mod arch;
pub mod arch; pub mod arch;
pub fn kmain() -> ! { pub fn kmain() -> ! {
if arch::cpu::id() == 0 {
process::init();
thread::spawn(fs::shell);
}
process::processor().run(); process::processor().run();
// thread::test::local_key(); // thread::test::local_key();

3
kernel/src/trap.rs
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@ -11,9 +11,6 @@ pub fn timer() {
} }
} }
pub fn before_return() {
}
pub fn error(tf: &TrapFrame) -> ! { pub fn error(tf: &TrapFrame) -> ! {
error!("{:#x?}", tf); error!("{:#x?}", tf);
let pid = processor().pid(); let pid = processor().pid();