Enable psf font for framebuffer display

3 files changed, 36 insertions, 1 deletions

diff --git a/src/boot/boot.S b/src/boot/boot.S
index 029a67e..7f12eed 100644
--- a/src/boot/boot.S
+++ b/src/boot/boot.S
@@ -35,6 +35,15 @@ mb_header_start:
 .int 12
 .int _start
 # ----------- End tag
+# ----------- Ask framebuffer tag
+.align 8
+.short 5
+.short 1
+.int 20
+.int 0
+.int 0
+.int 0
+# ----------- End framebuffer
 .align 8
 .int 0x0
 .int 0x8
diff --git a/src/boot/multiboot2.cc b/src/boot/multiboot2.cc
index 1b661b8..d1a912d 100644
--- a/src/boot/multiboot2.cc
+++ b/src/boot/multiboot2.cc
@@ -52,4 +52,13 @@ char mb2_find_old_rsdp(u32* mb2_info_addr, u64 *return_addr, u32 *return_size){
         return 1;
     }
     return 0;   
+}
+
+char mb2_find_framebuffer(u32* mb2_info_addr, FRAMEBUFFER *fb){
+    u32* addr=mb2_find_tag(mb2_info_addr,8); 
+    if(addr){
+        memcpy(addr, fb, sizeof(FRAMEBUFFER));
+        return 1;
+    }
+    return 0;
 }
\ No newline at end of file
diff --git a/src/boot/multiboot2.hpp b/src/boot/multiboot2.hpp
index da12e5f..cc28109 100644
--- a/src/boot/multiboot2.hpp
+++ b/src/boot/multiboot2.hpp
@@ -2,7 +2,24 @@
 
 #include "core/types.hpp"
 
+typedef struct TAG_HEADER {
+    u32 type;
+    u32 size;
+}__attribute__((packed)) TAG_HEADER;
+
+typedef struct FRAMEBUFFER {
+    TAG_HEADER header;
+    u64 addr;
+    u32 pitch;
+    u32 width;
+    u32 height;
+    u8 bpp;
+    u8 type;
+    u64 color_info_addr;
+} __attribute__((packed)) FRAMEBUFFER;
+
 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);
\ No newline at end of file
+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