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feat(adapter): higher-half kernel (linked at PHYS_OFFSET, boot trampoline, no low mappings), fix SBI ecall clobbers

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Gabriel Kaszewski
2026-10-27 00:25:20 +01:00
parent 55758ae5b2
commit b87a62475f
20 changed files with 208 additions and 143 deletions
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6
crates/hw-virtio/src/mmio.rs
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@@ -87,9 +87,11 @@ pub const MMIO_FIRST: usize = 0x10001000;
pub const MMIO_STRIDE: usize = 0x1000;
pub const MMIO_SLOTS: usize = 8;
pub fn scan_for_device(device_id: u32) -> Option<DirectMmio> {
/// Probes the MMIO slots starting at `first`, the address the caller sees
/// slot 0 at (`MMIO_FIRST` itself, or wherever it is mapped).
pub fn scan_for_device(first: usize, device_id: u32) -> Option<DirectMmio> {
for slot in 0..MMIO_SLOTS {
if let Some(mmio) = probe_slot(MMIO_FIRST + slot * MMIO_STRIDE, device_id) {
if let Some(mmio) = probe_slot(first + slot * MMIO_STRIDE, device_id) {
return Some(mmio);
}
}