Bootloader: Add .data section

bootloader/bios/a20_line.S

@@ -156,6 +156,8 @@ enable_a20:
 	popw %ax
 	ret
 
+.section .data
+
 a20_line_disabled_msg:
 	.asciz "A20 line disabled. Trying to enable it"
 

bootloader/bios/boot.S

@@ -143,6 +143,8 @@ enter_unreal_mode:
 
 	ret
 
+.section .data
+
 hello_msg:
 	.asciz "This is banan-os bootloader"
 

bootloader/bios/command_line.S

@@ -74,6 +74,8 @@ read_user_command_line:
 	ret
 
 
+.section .data
+
 command_line_enter_msg:
 	.asciz "cmdline: "
 

bootloader/bios/disk.S

@@ -470,6 +470,7 @@ print_root_partition_info:
 	popw %ax
 	ret
 
+.section .data
 
 # These will be patched during bootloader installation
 root_disk_guid:

bootloader/bios/elf.S

@@ -196,6 +196,7 @@ elf_read_kernel_to_memory:
 	movw $elf_read_kernel_to_memory_not_loadable_header_msg, %si
 	jmp print_and_halt
 
+.section .data
 
 elf_validate_file_header_invalid_magic_msg:
 	.asciz "ELF: file has invalid ELF magic"

bootloader/bios/ext2.S

@@ -692,6 +692,7 @@ ext2_find_kernel:
 	movw $ext2_kernel_not_reg_msg, %si
 	jmp print_and_halt
 
+.section .data
 
 kernel_path:
 	.short kernel_path1
@@ -704,7 +705,6 @@ kernel_path2:
 	.short 15
 	.asciz "banan-os.kernel"
 
-
 root_partition_does_not_fit_ext2_filesystem_msg:
 	.asciz "Root partition is too small to contain ext2 filesystem"
 root_partition_has_invalid_ext2_magic_msg:

bootloader/bios/framebuffer.S

@@ -185,6 +185,7 @@ vesa_set_video_mode:
 	popw %ax
 	ret
 
+.section .data
 
 vesa_error_msg:
 	.asciz "VESA error"

bootloader/bios/linker.ld

@@ -8,6 +8,8 @@ SECTIONS
 	. = ALIGN(512);
 	stage2_start = .;
 	.stage2 : { *(.stage2) }
+	. = ALIGN(512);
+	.data : { *(.data) }
 	stage2_end = .;
 
 	. = ALIGN(512);

bootloader/bios/memory_map.S

@@ -114,6 +114,7 @@ print_memory_map:
 
 	ret
 
+.section .data
 
 memory_map_msg:
 	.asciz "memmap:"