From 66f2ca62469eba4b46e1f19f54dde9476b08d956 Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Fri, 30 Apr 2021 09:31:30 +0200
Subject: Debug interrupts, allow to show bmp images

---
 src/boot/multiboot2.cc  |  9 +++++++++
 src/boot/multiboot2.hpp | 10 +++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

(limited to 'src/boot')

diff --git a/src/boot/multiboot2.cc b/src/boot/multiboot2.cc
index da247ad..0cc8a25 100644
--- a/src/boot/multiboot2.cc
+++ b/src/boot/multiboot2.cc
@@ -69,4 +69,13 @@ char mb2_find_framebuffer(u32* mb2_info_addr, FRAMEBUFFER *fb){
         return 1;
     }
     return 0;
+}
+
+char mb2_find_mem(u32* mb2_info_addr, MEM_INFO *mem){
+    u32* addr=mb2_find_tag(mb2_info_addr,4); 
+    if(addr){
+        memcpy(addr, mem, sizeof(MEM_INFO));
+        return 1;
+    }
+    return 0;
 }
\ No newline at end of file
diff --git a/src/boot/multiboot2.hpp b/src/boot/multiboot2.hpp
index f340269..f86c894 100644
--- a/src/boot/multiboot2.hpp
+++ b/src/boot/multiboot2.hpp
@@ -19,8 +19,16 @@ typedef struct FRAMEBUFFER {
     u8 reserved;
 } __attribute__((packed)) FRAMEBUFFER;
 
+typedef struct {
+    TAG_HEADER header;
+    u32 mem_lower;
+    u32 mem_upper;
+} __attribute__((packed)) MEM_INFO;
+
+
 u32* mb2_find_tag(u32 *mb2_info_addr, char type);
 char mb2_find_bootloader_name(u32* mb2_info_addr, char *return_name);
 char mb2_find_new_rsdp(u32* mb2_info_addr, u64 *return_addr, u32 *return_size);
 char mb2_find_old_rsdp(u32* mb2_info_addr, u64 *return_addr, u32 *return_size);
-char mb2_find_framebuffer(u32* mb2_info_addr, FRAMEBUFFER *fb);
\ No newline at end of file
+char mb2_find_framebuffer(u32* mb2_info_addr, FRAMEBUFFER *fb);
+char mb2_find_mem(u32* mb2_info_addr, MEM_INFO *mem);
\ No newline at end of file
-- 
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