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81 lines
2.0 KiB
81 lines
2.0 KiB
pub mod io;
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pub mod interrupt;
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pub mod timer;
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pub mod paging;
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pub mod memory;
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pub mod compiler_rt;
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pub mod consts;
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pub mod cpu;
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#[no_mangle]
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pub extern fn rust_main(hartid: usize, dtb: usize, hart_mask: usize, functions: usize) -> ! {
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unsafe { cpu::set_cpu_id(hartid); }
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unsafe { BBL_FUNCTIONS_PTR = functions as *const _; }
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println!("Hello RISCV! in hart {}, dtb @ {:#x}, functions @ {:#x}", hartid, dtb, functions);
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if hartid != 0 {
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while unsafe { !cpu::has_started(hartid) } { }
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others_main();
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//other_main -> !
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}
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crate::logging::init();
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interrupt::init();
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memory::init();
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timer::init();
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crate::process::init();
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unsafe { cpu::start_others(hart_mask); }
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crate::kmain();
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}
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fn others_main() -> ! {
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interrupt::init();
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memory::init_other();
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timer::init();
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crate::kmain();
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}
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/// Constant & Macro for `trap.asm`
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#[cfg(feature = "m_mode")]
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global_asm!("
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.equ xstatus, 0x300
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.equ xscratch, 0x340
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.equ xepc, 0x341
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.equ xcause, 0x342
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.equ xtval, 0x343
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.macro XRET\n mret\n .endm
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");
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#[cfg(not(feature = "m_mode"))]
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global_asm!("
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.equ xstatus, 0x100
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.equ xscratch, 0x140
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.equ xepc, 0x141
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.equ xcause, 0x142
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.equ xtval, 0x143
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.macro XRET\n sret\n .endm
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");
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#[cfg(feature = "no_bbl")]
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global_asm!(include_str!("boot/boot.asm"));
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global_asm!(include_str!("boot/entry.asm"));
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global_asm!(include_str!("boot/trap.asm"));
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/// Some symbols passed from BBL.
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/// Used in M-mode kernel.
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#[repr(C)]
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struct BBLFunctions {
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mcall_trap: BBLTrapHandler,
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illegal_insn_trap: BBLTrapHandler,
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mcall_console_putchar: extern fn(u8),
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mcall_console_getchar: extern fn() -> usize,
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}
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type BBLTrapHandler = extern fn(regs: *const usize, mcause: usize, mepc: usize);
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static mut BBL_FUNCTIONS_PTR: *const BBLFunctions = ::core::ptr::null();
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use lazy_static::lazy_static;
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lazy_static! {
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static ref BBL: BBLFunctions = unsafe { BBL_FUNCTIONS_PTR.read() };
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} |