From a8a9ade74fc5571ba34635d7ea4bae58748100b0 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Wed, 6 May 2026 06:49:02 +0000
Subject: dump_mb2i: add support for framebuffer tag

---
 scripts/gdb/teachos/dump_mb2i.py | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'scripts/gdb')

diff --git a/scripts/gdb/teachos/dump_mb2i.py b/scripts/gdb/teachos/dump_mb2i.py
index 06f4531..ca0c378 100644
--- a/scripts/gdb/teachos/dump_mb2i.py
+++ b/scripts/gdb/teachos/dump_mb2i.py
@@ -36,6 +36,12 @@ class MemoryType(IntEnum):
     BAD = 5
 
 
+class FramebufferType(IntEnum):
+    INDEXED = 0
+    RGB = 1
+    TEXT = 2
+
+
 TAG_NAMES = {
     TagType.END: "End of Tags",
     TagType.CMDLINE: "Boot Command Line",
@@ -69,6 +75,13 @@ MEMORY_TYPES = {
     MemoryType.BAD: "Bad Memory",
 }
 
+FRAMEBUFFER_TYPES = {
+    FramebufferType.INDEXED: "Indexed Color",
+    FramebufferType.RGB: "RGB",
+    FramebufferType.TEXT: "Text Mode",
+}
+
+
 INDENT = f"{' '*11}"
 
 
@@ -221,4 +234,11 @@ class DumpMB2I(gdb.Command):
         gdb.write(f"{INDENT}address: {base:#010x}\n")
 
     def _write_framebuffer_info_tag(self, data):
-        pass
+        address, pitch, width, height, bpp, type = struct.unpack_from("<QIIIBB", data)
+        type_string = FRAMEBUFFER_TYPES.get(type, "Unknown")
+        gdb.write(f"{INDENT}address: {address:#010x} | type: {type_string}\n")
+        gdb.write(f"{INDENT}depth: {bpp}  | pitch: {self._format_size(pitch)}\n")
+        if type == FramebufferType.TEXT:
+            gdb.write(f"{INDENT}width: {width} chars | height: {height} chars\n")
+        else:
+            gdb.write(f"{INDENT}width: {width} px | height: {height} px\n")
-- 
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