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fix: Level 3 translation fault

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This commit is contained in:
Alexander Neuhäuser
2026-03-15 12:27:36 +01:00
parent e84ce6ab91
commit 95a5037b91
2 changed files with 99 additions and 40 deletions
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13
src/main.rs
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@@ -13,8 +13,8 @@ extern crate alloc;
use nova::{
aarch64::{
mmu::{
allocate_memory_explicit, EL0_ACCESSIBLE, LEVEL2_BLOCK_SIZE, NORMAL_MEM, PXN, UXN,
WRITABLE,
allocate_memory_explicit, sim_l3_access, EL0_ACCESSIBLE, NORMAL_MEM,
PXN, UXN, WRITABLE,
},
registers::{daif, read_id_aa64mmfr0_el1},
},
@@ -77,11 +77,12 @@ pub extern "C" fn main() -> ! {
// TODO: Investigate why the size is off
allocate_memory_explicit(
0x3c100000,
1080 * 1920 * 4 + LEVEL2_BLOCK_SIZE + LEVEL2_BLOCK_SIZE,
1080 * 1920 * 4,
0x3c100000,
NORMAL_MEM | PXN | UXN | WRITABLE | EL0_ACCESSIBLE,
)
.unwrap();
sim_l3_access(0x3c100000);
configure_mmu_el1();
};
@@ -108,7 +109,11 @@ pub extern "C" fn kernel_main() -> ! {
nova::initialize_kernel();
println!("Exception Level: {}", get_current_el());
daif::unmask_all();
let fb = FrameBuffer::default();
for i in 0..1080 {
fb.draw_pixel(50, i, RED);
}
unsafe {
el1_to_el0();
};
@@ -131,7 +136,7 @@ pub extern "C" fn el0() -> ! {
let fb = FrameBuffer::default();
for i in 0..1080 {
for i in 600..1080 {
fb.draw_pixel(50, i, RED);
}
fb.draw_square(500, 500, 600, 700, RED);