From 5e9190ff1a7d35e812b42c5bb9cbb742c2d313fb Mon Sep 17 00:00:00 2001 From: Tianhao Wang Date: Mon, 5 Feb 2024 14:04:25 +0100 Subject: MM: add modules for memory management --- src/defs.rs | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 src/defs.rs (limited to 'src/defs.rs') diff --git a/src/defs.rs b/src/defs.rs new file mode 100644 index 0000000..3c1ff57 --- /dev/null +++ b/src/defs.rs @@ -0,0 +1,13 @@ +pub struct Mem; +impl Mem { + // units + pub const K: usize = 1024; + pub const M: usize = 1024 * Mem::K; + pub const G: usize = 1024 * Mem::M; + // physical memory + pub const PHY_TOP: usize = 128 * Mem::M; // qemu defaults to 128 MiB phy Memory + pub const PAGE_SIZE: usize = 0x1000; + pub const PAGE_SHIFT: usize = 12; + pub const PHY_PAGES: usize = Mem::PHY_TOP >> Mem::PAGE_SHIFT; + pub const PAGE_MASK: u64 = 0xfff; +} -- cgit v1.2.3-70-g09d2