mirror of https://github.com/m-labs/artiq
34 lines
873 B
Rust
34 lines
873 B
Rust
use core::ptr;
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use board::csr;
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use mailbox;
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use rpc_queue;
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use kernel_proto::{KERNELCPU_EXEC_ADDRESS, KERNELCPU_LAST_ADDRESS, KSUPPORT_HEADER_SIZE};
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pub unsafe fn start() {
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if csr::kernel_cpu::reset_read() == 0 {
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panic!("attempted to start kernel CPU when it is already running")
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}
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stop();
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let ksupport_image = include_bytes!(concat!(env!("CARGO_TARGET_DIR"), "/../ksupport.elf"));
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let ksupport_addr = (KERNELCPU_EXEC_ADDRESS - KSUPPORT_HEADER_SIZE) as *mut u8;
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ptr::copy_nonoverlapping(ksupport_image.as_ptr(), ksupport_addr, ksupport_image.len());
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csr::kernel_cpu::reset_write(0);
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rpc_queue::init();
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}
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pub unsafe fn stop() {
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csr::kernel_cpu::reset_write(1);
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mailbox::acknowledge();
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rpc_queue::init();
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}
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pub fn validate(ptr: usize) -> bool {
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ptr >= KERNELCPU_EXEC_ADDRESS && ptr <= KERNELCPU_LAST_ADDRESS
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}
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