forked from AbleOS/ableos
ARM: it compiles but does not yet run :V
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4dd3699e0e
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14
kernel/lds/aarch64-qemu.ld
Normal file
14
kernel/lds/aarch64-qemu.ld
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@ -0,0 +1,14 @@
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ENTRY(_start)
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SECTIONS
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{
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. = 0x40080000;
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.text.boot : { *(.text.boot) }
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.text : { *(.text) }
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.data : { *(.data) }
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.rodata : { *(.rodata) }
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.bss : { *(.bss) }
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. = ALIGN(8);
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. = . + 0x4000;
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LD_STACK_PTR = .;
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}
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@ -1,4 +1,27 @@
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//!
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use core::ptr;
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#[no_mangle]
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unsafe extern "C" fn _kernel_start() -> ! {}
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unsafe extern "C" fn _kernel_start() -> ! {
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const UART0: *mut u8 = 0x0900_0000 as *mut u8;
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let out_str = b"AArch64 Bare Metal";
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for byte in out_str {
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unsafe {
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ptr::write_volatile(UART0, *byte);
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}
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}
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loop {}
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}
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pub fn log(_args: core::fmt::Arguments<'_>) -> core::fmt::Result {
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panic!()
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}
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pub fn sloop() -> ! {
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loop {}
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}
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pub fn hardware_random_u64() -> u64 {
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0
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}
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pub const PAGE_SIZE: usize = 10;
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@ -10,7 +10,7 @@
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"linker-is-gnu": true,
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"pre-link-args": {
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"ld.lld": [
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"-Taarch64-qemu.ld"
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"-Tkernel/lds/aarch64-qemu.ld"
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]
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},
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"llvm-target": "aarch64-unknown-none",
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@ -225,7 +225,8 @@ fn run(release: bool, target: Target) -> Result<(), Error> {
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if target == Target::Aarch64 {
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com.args([
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"-M", "virt", "-m", //
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"128M", "-serial", "stdio",
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"128M",
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// "-serial", "stdio",
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]);
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}
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