From 9024269ec5ad28fead62d0117ad4035912535f73 Mon Sep 17 00:00:00 2001
From: pantonshire <tom@tomandtally.co.uk>
Date: Thu, 27 Jun 2024 08:06:55 +0100
Subject: [PATCH] rename first stage

---
 boot.s => boot0.s | 10 ++++++++++
 justfile          |  4 ++--
 2 files changed, 12 insertions(+), 2 deletions(-)
 rename boot.s => boot0.s (77%)

diff --git a/boot.s b/boot0.s
similarity index 77%
rename from boot.s
rename to boot0.s
index c094b59..f7551ac 100644
--- a/boot.s
+++ b/boot0.s
@@ -34,6 +34,16 @@ bits 16
   ; TODO: grab all the info we can from bios interrupts and deliver it to ths OS nicely
   ; e.g. in a fixed memory location
 
+  ; TODO:
+  ; - Generate GPT in justfile
+  ; - Parse global parition table
+  ; - Load second stage from GPT partition with a particular UUID / name like GRUB does
+  ;   (it's Hah!IdontNeedEFI in GRUB)
+  ;   - https://en.wikipedia.org/wiki/BIOS_boot_partition
+  ; - Future work:
+  ;   - Boot from UEFI
+  ;   - Boot on non-GPT partitioned disk
+
   ; MBR bootstrap field is 440 bytes long
   %if ($ - $$) > 440
   %error "exceeded mbr bootstrap field size"
diff --git a/justfile b/justfile
index 55b1ba0..94112f5 100644
--- a/justfile
+++ b/justfile
@@ -1,6 +1,6 @@
 run:
-  qemu-system-x86_64 -drive format=raw,file=boot.bin
+  qemu-system-x86_64 -drive format=raw,file=boot0.bin
 
 build:
-  nasm -f bin -o boot.bin boot.s
+  nasm -f bin -o boot0.bin boot0.s