Linker script for the new x86 setup code

Linker script to define the layout of the new x86 setup code.
Includes assert for size overflow and a misaligned setup header.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/i386/boot/setup.ld b/arch/i386/boot/setup.ld
new file mode 100644
index 000000000000..df9234b3a5e0
--- /dev/null
+++ b/arch/i386/boot/setup.ld
@@ -0,0 +1,54 @@
+/*
+ * setup.ld
+ *
+ * Linker script for the i386 setup code
+ */
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+ENTRY(_start)
+
+SECTIONS
+{
+        . = 0;
+        .bstext         : { *(.bstext) }
+        .bsdata         : { *(.bsdata) }
+
+        . = 497;
+        .header         : { *(.header) }
+        .inittext       : { *(.inittext) }
+        .initdata       : { *(.initdata) }
+        .text           : { *(.text*) }
+
+        . = ALIGN(16);
+        .rodata         : { *(.rodata*) }
+
+        .videocards     : {
+                video_cards = .;
+                *(.videocards)
+                video_cards_end = .;
+        }
+
+        . = ALIGN(16);
+        .data           : { *(.data*) }
+
+        .signature      : {
+                setup_sig = .;
+                LONG(0x5a5aaa55)
+        }
+
+
+        . = ALIGN(16);
+        .bss            :
+        {
+                __bss_start = .;
+                *(.bss)
+                __bss_end = .;
+        }
+        . = ALIGN(16);
+        _end = .;
+
+        /DISCARD/ : { *(.note*) }
+
+        . = ASSERT(_end <= 0x8000, "Setup too big!");
+        . = ASSERT(hdr == 0x1f1, "The setup header has the wrong offset!");
+}