lorenzo/hydra
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

implemented paging with Sv57

Browse source
This commit is contained in:
Lorenzo Torres 2026-02-01 15:53:02 +01:00
parent 4341e1dce2
commit 31a0fd5202
4 changed files with 125 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/main.zig
View file

@ -40,11 +40,6 @@ export fn kmain(hartid: u64, fdt_ptr: *const anyopaque) callconv(.c) noreturn {
debug.print("booting hydra...\n", .{});
var reservations = fdt.memoryReservations();
while (reservations.next()) |reservation| {
debug.print("0x{x}:0x{x}\n", .{reservation.address, reservation.size});
}
const memory = fdt.memory().?;
var reg_iter = Fdt.parseReg(memory.getProperty("reg").?.data, root.addressCells(), root.sizeCells());
const reg = reg_iter.next().?;
@ -55,7 +50,15 @@ export fn kmain(hartid: u64, fdt_ptr: *const anyopaque) callconv(.c) noreturn {
debug.print("memory allocator initialized.\n", .{});
const allocator = buddy.allocator();
_ = allocator;
var table = isa.PageTable.init(allocator) catch { @panic("Unable to create page table.\n"); };
table.identityMap(allocator, memory_end) catch {};
table.map(allocator, @intFromPtr(console.mmio), @intFromPtr(console.mmio), .{.read = 1, .write = 1, .execute = 1}) catch {};
isa.write_satp(.{
.ppn = @as(u44, @intCast(@intFromPtr(table) >> 12)),
.mode = .sv57,
});
debug.print("loaded kernel page table.\n", .{});
while (true) {
asm volatile ("wfi");