feat: Add common constants, errors, and serial driver functionality

1 files changed, 21 insertions, 0 deletions

diff --git a/common/constants/memory/sizes.zig b/common/constants/memory/sizes.zig
new file mode 100644
index 0000000..049b087
--- /dev/null
+++ b/common/constants/memory/sizes.zig
@@ -0,0 +1,21 @@
+//! Memory Size Constants
+
+pub const page_size: u64 = 4096;
+pub const page_shift: u6 = 12;
+pub const page_mask: u64 = page_size - 1;
+
+pub const large_page_size: u64 = 2 * 1024 * 1024;
+pub const large_page_shift: u6 = 21;
+pub const large_page_mask: u64 = large_page_size - 1;
+
+pub const huge_page_size: u64 = 1024 * 1024 * 1024;
+pub const huge_page_shift: u6 = 30;
+pub const huge_page_mask: u64 = huge_page_size - 1;
+
+pub const kilobyte: u64 = 1024;
+pub const megabyte: u64 = 1024 * kilobyte;
+pub const gigabyte: u64 = 1024 * megabyte;
+pub const terabyte: u64 = 1024 * gigabyte;
+
+pub const entries_per_page_table: u64 = 512;
+pub const page_table_levels: u8 = 4;