initial_commit

1 files changed, 261 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
new file mode 100644
index 00000000..920276c0
--- /dev/null
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -0,0 +1,261 @@
+#ifdef CONFIG_PPC64
+#define PROVIDE32(x)	PROVIDE(__unused__##x)
+#else
+#define PROVIDE32(x)	PROVIDE(x)
+#endif
+#include <asm/page.h>
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
+
+ENTRY(_stext)
+
+PHDRS {
+	kernel PT_LOAD FLAGS(7); /* RWX */
+	notes PT_NOTE FLAGS(0);
+	dummy PT_NOTE FLAGS(0);
+
+	/* binutils < 2.18 has a bug that makes it misbehave when taking an
+	   ELF file with all segments at load address 0 as input.  This
+	   happens when running "strip" on vmlinux, because of the AT() magic
+	   in this linker script.  People using GCC >= 4.2 won't run into
+	   this problem, because the "build-id" support will put some data
+	   into the "notes" segment (at a non-zero load address).
+
+	   To work around this, we force some data into both the "dummy"
+	   segment and the kernel segment, so the dummy segment will get a
+	   non-zero load address.  It's not enough to always create the
+	   "notes" segment, since if nothing gets assigned to it, its load
+	   address will be zero.  */
+}
+
+#ifdef CONFIG_PPC64
+OUTPUT_ARCH(powerpc:common64)
+jiffies = jiffies_64;
+#else
+OUTPUT_ARCH(powerpc:common)
+jiffies = jiffies_64 + 4;
+#endif
+SECTIONS
+{
+	. = 0;
+	reloc_start = .;
+
+	. = KERNELBASE;
+
+/*
+ * Text, read only data and other permanent read-only sections
+ */
+
+	/* Text and gots */
+	.text : AT(ADDR(.text) - LOAD_OFFSET) {
+		ALIGN_FUNCTION();
+		HEAD_TEXT
+		_text = .;
+		/* careful! __ftr_alt_* sections need to be close to .text */
+		*(.text .fixup __ftr_alt_* .ref.text)
+		SCHED_TEXT
+		LOCK_TEXT
+		KPROBES_TEXT
+		IRQENTRY_TEXT
+
+#ifdef CONFIG_PPC32
+		*(.got1)
+		__got2_start = .;
+		*(.got2)
+		__got2_end = .;
+#endif /* CONFIG_PPC32 */
+
+	} :kernel
+
+	. = ALIGN(PAGE_SIZE);
+	_etext = .;
+	PROVIDE32 (etext = .);
+
+	/* Read-only data */
+	RODATA
+
+	EXCEPTION_TABLE(0)
+
+	NOTES :kernel :notes
+
+	/* The dummy segment contents for the bug workaround mentioned above
+	   near PHDRS.  */
+	.dummy : AT(ADDR(.dummy) - LOAD_OFFSET) {
+		LONG(0)
+		LONG(0)
+		LONG(0)
+	} :kernel :dummy
+
+/*
+ * Init sections discarded at runtime
+ */
+	. = ALIGN(PAGE_SIZE);
+	__init_begin = .;
+	INIT_TEXT_SECTION(PAGE_SIZE) :kernel
+
+	/* .exit.text is discarded at runtime, not link time,
+	 * to deal with references from __bug_table
+	 */
+	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
+		EXIT_TEXT
+	}
+
+	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
+		INIT_DATA
+		__vtop_table_begin = .;
+		*(.vtop_fixup);
+		__vtop_table_end = .;
+		__ptov_table_begin = .;
+		*(.ptov_fixup);
+		__ptov_table_end = .;
+#ifdef CONFIG_PPC_ISERIES
+		__dt_strings_start = .;
+		*(.dt_strings);
+		__dt_strings_end = .;
+#endif
+	}
+
+	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
+		INIT_SETUP(16)
+	}
+
+	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
+		INIT_CALLS
+	}
+
+	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
+		CON_INITCALL
+	}
+
+	SECURITY_INIT
+
+	. = ALIGN(8);
+	__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
+		__start___ftr_fixup = .;
+		*(__ftr_fixup)
+		__stop___ftr_fixup = .;
+	}
+	. = ALIGN(8);
+	__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
+		__start___mmu_ftr_fixup = .;
+		*(__mmu_ftr_fixup)
+		__stop___mmu_ftr_fixup = .;
+	}
+	. = ALIGN(8);
+	__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
+		__start___lwsync_fixup = .;
+		*(__lwsync_fixup)
+		__stop___lwsync_fixup = .;
+	}
+#ifdef CONFIG_PPC64
+	. = ALIGN(8);
+	__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
+		__start___fw_ftr_fixup = .;
+		*(__fw_ftr_fixup)
+		__stop___fw_ftr_fixup = .;
+	}
+#endif
+	.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
+		INIT_RAM_FS
+	}
+
+	PERCPU_SECTION(L1_CACHE_BYTES)
+
+	. = ALIGN(8);
+	.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
+		__machine_desc_start = . ;
+		*(.machine.desc)
+		__machine_desc_end = . ;
+	}
+#ifdef CONFIG_RELOCATABLE
+	. = ALIGN(8);
+	.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) { *(.dynsym) }
+	.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
+	.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
+	{
+		__dynamic_start = .;
+		*(.dynamic)
+	}
+	.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
+	.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
+	.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
+	{
+		__rela_dyn_start = .;
+		*(.rela*)
+	}
+#endif
+
+	/* freed after init ends here */
+	. = ALIGN(PAGE_SIZE);
+	__init_end = .;
+
+/*
+ * And now the various read/write data
+ */
+
+	. = ALIGN(PAGE_SIZE);
+	_sdata = .;
+
+#ifdef CONFIG_PPC32
+	.data : AT(ADDR(.data) - LOAD_OFFSET) {
+		DATA_DATA
+		*(.sdata)
+		*(.got.plt) *(.got)
+	}
+#else
+	.data : AT(ADDR(.data) - LOAD_OFFSET) {
+		DATA_DATA
+		*(.data.rel*)
+		*(.toc1)
+		*(.branch_lt)
+	}
+
+	.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
+		*(.opd)
+	}
+
+	.got : AT(ADDR(.got) - LOAD_OFFSET) {
+		__toc_start = .;
+		*(.got)
+		*(.toc)
+	}
+#endif
+
+	/* The initial task and kernel stack */
+	INIT_TASK_DATA_SECTION(THREAD_SIZE)
+
+	.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
+		PAGE_ALIGNED_DATA(PAGE_SIZE)
+	}
+
+	.data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) {
+		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
+	}
+
+	.data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) {
+		READ_MOSTLY_DATA(L1_CACHE_BYTES)
+	}
+
+	. = ALIGN(PAGE_SIZE);
+	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
+		NOSAVE_DATA
+	}
+
+	. = ALIGN(PAGE_SIZE);
+	_edata  =  .;
+	PROVIDE32 (edata = .);
+
+/*
+ * And finally the bss
+ */
+
+	BSS_SECTION(0, 0, 0)
+
+	. = ALIGN(PAGE_SIZE);
+	_end = . ;
+	PROVIDE32 (end = .);
+
+	/* Sections to be discarded. */
+	DISCARDS
+}