microblaze_v8: vmlinux.lds.S - linker script

Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/kernel/vmlinux.lds.S

@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2008-2009 PetaLogix
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+OUTPUT_FORMAT("elf32-microblaze", "elf32-microblaze", "elf32-microblaze")
+OUTPUT_ARCH(microblaze)
+ENTRY(_start)
+
+#include <asm-generic/vmlinux.lds.h>
+
+jiffies = jiffies_64 + 4;
+
+SECTIONS {
+	. = CONFIG_KERNEL_BASE_ADDR;
+
+	.text : {
+		_text = . ;
+		_stext = . ;
+		*(.text .text.*)
+		*(.fixup)
+
+		*(.exitcall.exit)
+		SCHED_TEXT
+		LOCK_TEXT
+		KPROBES_TEXT
+		. = ALIGN (4) ;
+		_etext = . ;
+	}
+
+	. = ALIGN (4) ;
+	_fdt_start = . ; /* place for fdt blob */
+	. = . + 0x4000;
+	_fdt_end = . ;
+
+	. = ALIGN(16);
+	RODATA
+	. = ALIGN(16);
+	__ex_table : {
+		__start___ex_table = .;
+		*(__ex_table)
+		__stop___ex_table = .;
+	}
+
+	/*
+	 * sdata2 section can go anywhere, but must be word aligned
+	 * and SDA2_BASE must point to the middle of it
+	 */
+	.sdata2 : {
+		_ssrw = .;
+		. = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */
+		*(.sdata2)
+	. = ALIGN(8);
+	_essrw = .;
+	_ssrw_size = _essrw - _ssrw;
+	_KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2);
+	}
+
+	_sdata = . ;
+	.data ALIGN (4096) : { /* page aligned when MMU used - origin 0x4 */
+		*(.data)
+	}
+	. = ALIGN(32);
+	.data.cacheline_aligned : { *(.data.cacheline_aligned) }
+	_edata = . ;
+
+	/* Reserve some low RAM for r0 based memory references */
+	. = ALIGN(0x4) ;
+	r0_ram = . ;
+	. = . +  4096;	/* a page should be enough */
+
+	/* The initial task */
+	. = ALIGN(8192);
+	.data.init_task : { *(.data.init_task) }
+
+	/* Under the microblaze ABI, .sdata and .sbss must be contiguous */
+	. = ALIGN(8);
+	.sdata : {
+		_ssro = .;
+		*(.sdata)
+	}
+
+	.sbss :	{
+		_ssbss = .;
+		*(.sbss)
+		_esbss = .;
+		_essro = .;
+		_ssro_size = _essro - _ssro ;
+		_KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
+	}
+
+	__init_begin = .;
+
+	. = ALIGN(4096);
+	.init.text : {
+		_sinittext = . ;
+		*(.init.text)
+		*(.exit.text)
+		*(.exit.data)
+		_einittext = .;
+	}
+
+	.init.data : { *(.init.data) }
+
+	. = ALIGN(4);
+	.init.ivt : {
+		__ivt_start = .;
+		*(.init.ivt)
+		__ivt_end = .;
+	}
+
+	.init.setup : {
+		__setup_start = .;
+		*(.init.setup)
+		__setup_end = .;
+	}
+
+	.initcall.init : {
+		__initcall_start = .;
+		INITCALLS
+		__initcall_end = .;
+	}
+
+	.con_initcall.init : {
+		__con_initcall_start = .;
+		*(.con_initcall.init)
+		__con_initcall_end = .;
+	}
+
+	__init_end_before_initramfs = .;
+
+	.init.ramfs ALIGN(4096) : {
+		__initramfs_start = .;
+		*(.init.ramfs)
+		__initramfs_end = .;
+		. = ALIGN(4);
+		LONG(0);
+/*
+ * FIXME this can break initramfs for MMU.
+ * Pad init.ramfs up to page boundary,
+ * so that __init_end == __bss_start. This will make image.elf
+ * consistent with the image.bin
+ */
+		/* . = ALIGN(4096); */
+	}
+	__init_end = .;
+
+	.bss ALIGN (4096) : { /* page aligned when MMU used */
+		__bss_start = . ;
+			*(.bss*)
+			*(COMMON)
+		. = ALIGN (4) ;
+		__bss_stop = . ;
+		_ebss = . ;
+	}
+	. = ALIGN(4096);
+	_end = .;
+}