From ad0123d2368973927f536061b416cb7571aced63 Mon Sep 17 00:00:00 2001
From: "Anna (navi) Figueiredo Gomes" <navi@vlhl.dev>
Date: Thu, 11 Jan 2024 17:13:02 +0100
Subject: add options to meson (and use fs module for linker script)

Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
---
 meson.build   | 30 +++++++++++++++++++++++-------
 meson.options |  2 ++
 2 files changed, 25 insertions(+), 7 deletions(-)
 create mode 100644 meson.options

diff --git a/meson.build b/meson.build
index 76539ce..8f56ec0 100644
--- a/meson.build
+++ b/meson.build
@@ -10,24 +10,29 @@ if not meson.is_cross_build()
   error('must be invoked with "meson setup --cross-file=toolchain.txt"')
 endif
 
+fs = import('fs')
+linker_script = fs.copyfile('util/linker.ld')
+
 files = [
   'src/asm/boot.asm',
   'src/asm/long.asm',
   'src/nrvn.c',
-  'src/vga.c',
+  'src/acpi.c',
   'src/idt.c',
   'src/mem.c',
-  'src/acpi.c',
-  'src/ps2.c',
+  'src/memory.c',
+  'src/pci.c',
   'src/pic.c',
-  'src/memory.c'
+  'src/ps2.c',
+  'src/vga.c',
+  linker_script
 ]
 
 ld_args = [
   '-ffreestanding',
   '-nostdlib',
   '-T',
-  join_paths(meson.current_source_dir(), 'util', 'linker.ld')
+  linker_script.full_path()
 ]
 
 kernel = executable('nrvn', files,
@@ -38,8 +43,19 @@ kernel = executable('nrvn', files,
 
 
 iso = custom_target('iso',
-  input: [import('fs').copyfile('util/grub.cfg'), kernel],
+  input: [fs.copyfile('util/grub.cfg'), kernel],
   output: 'nrvn.iso',
   command: ['util/build_iso.sh', '@PRIVATE_DIR@', '@INPUT@', '@OUTPUT@'])
 
-run_target('run', command: [find_program('qemu'), '-cdrom', iso, '-m', '2G'])
+qemu_args = [
+  '-cdrom', iso,
+  '-m', get_option('ram'),
+]
+
+qemu_kvm = []
+if get_option('kvm')
+  qemu_kvm += '-enable-kvm'
+endif
+
+run_target('run', command: [find_program('qemu'), qemu_args, qemu_kvm])
+run_target('run-gdb', command: [find_program('qemu'), qemu_args, '-s', '-S'])
diff --git a/meson.options b/meson.options
new file mode 100644
index 0000000..9d3e751
--- /dev/null
+++ b/meson.options
@@ -0,0 +1,2 @@
+option('ram', type: 'string', value: '512M', description: 'how much ram to give qemu')
+option('kvm', type: 'boolean', value: 'true', description: 'run qemu with -enable-kvm')
-- 
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