1 files changed, 424 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
new file mode 100644
index 0000000000..1c5970df32
--- /dev/null
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -0,0 +1,424 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifdef CONFIG_PPC64
+#define PROVIDE32(x)	PROVIDE(__unused__##x)
+#else
+#define PROVIDE32(x)	PROVIDE(x)
+#endif
+
+#define BSS_FIRST_SECTIONS *(.bss.prominit)
+#define EMITS_PT_NOTE
+#define RO_EXCEPTION_TABLE_ALIGN	0
+#define RUNTIME_DISCARD_EXIT
+
+#define SOFT_MASK_TABLE(align)						\
+	. = ALIGN(align);						\
+	__soft_mask_table : AT(ADDR(__soft_mask_table) - LOAD_OFFSET) {	\
+		__start___soft_mask_table = .;				\
+		KEEP(*(__soft_mask_table))				\
+		__stop___soft_mask_table = .;				\
+	}
+
+#define RESTART_TABLE(align)						\
+	. = ALIGN(align);						\
+	__restart_table : AT(ADDR(__restart_table) - LOAD_OFFSET) {	\
+		__start___restart_table = .;				\
+		KEEP(*(__restart_table))				\
+		__stop___restart_table = .;				\
+	}
+
+#include <asm/page.h>
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
+
+#define STRICT_ALIGN_SIZE	(1 << CONFIG_DATA_SHIFT)
+
+#if STRICT_ALIGN_SIZE < PAGE_SIZE
+#error "CONFIG_DATA_SHIFT must be >= PAGE_SHIFT"
+#endif
+
+ENTRY(_stext)
+
+PHDRS {
+	text PT_LOAD FLAGS(7); /* RWX */
+	note PT_NOTE FLAGS(0);
+}
+
+#ifdef CONFIG_PPC64
+OUTPUT_ARCH(powerpc:common64)
+jiffies = jiffies_64;
+#else
+OUTPUT_ARCH(powerpc:common)
+jiffies = jiffies_64 + 4;
+#endif
+SECTIONS
+{
+	. = KERNELBASE;
+
+/*
+ * Text, read only data and other permanent read-only sections
+ */
+
+	_text = .;
+	_stext = .;
+
+	/*
+	 * Head text.
+	 * This needs to be in its own output section to avoid ld placing
+	 * branch trampoline stubs randomly throughout the fixed sections,
+	 * which it will do (even if the branch comes from another section)
+	 * in order to optimize stub generation.
+	 */
+	.head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
+#ifdef CONFIG_PPC64
+		KEEP(*(.head.text.first_256B));
+#ifdef CONFIG_PPC_BOOK3E_64
+#else
+		KEEP(*(.head.text.real_vectors));
+		*(.head.text.real_trampolines);
+		KEEP(*(.head.text.virt_vectors));
+		*(.head.text.virt_trampolines);
+# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
+		KEEP(*(.head.data.fwnmi_page));
+# endif
+#endif
+#else /* !CONFIG_PPC64 */
+		HEAD_TEXT
+#endif
+	} :text
+
+	__head_end = .;
+
+#ifdef CONFIG_PPC64
+	/*
+	 * ALIGN(0) overrides the default output section alignment because
+	 * this needs to start right after .head.text in order for fixed
+	 * section placement to work.
+	 */
+	.text ALIGN(0) : AT(ADDR(.text) - LOAD_OFFSET) {
+#ifdef CONFIG_LD_HEAD_STUB_CATCH
+		KEEP(*(.linker_stub_catch));
+		. = . ;
+#endif
+
+#else
+	.text : AT(ADDR(.text) - LOAD_OFFSET) {
+		ALIGN_FUNCTION();
+#endif
+		/* careful! __ftr_alt_* sections need to be close to .text */
+		*(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text);
+		*(.tramp.ftrace.text);
+		NOINSTR_TEXT
+		SCHED_TEXT
+		LOCK_TEXT
+		KPROBES_TEXT
+		IRQENTRY_TEXT
+		SOFTIRQENTRY_TEXT
+		/*
+		 * -Os builds call FP save/restore functions. The powerpc64
+		 * linker generates those on demand in the .sfpr section.
+		 * .sfpr gets placed at the beginning of a group of input
+		 * sections, which can break start-of-text offset if it is
+		 * included with the main text sections, so put it by itself.
+		 */
+		*(.sfpr);
+		*(.text.asan.* .text.tsan.*)
+		MEM_KEEP(init.text)
+		MEM_KEEP(exit.text)
+	} :text
+
+	. = ALIGN(PAGE_SIZE);
+	_etext = .;
+	PROVIDE32 (etext = .);
+
+	/* Read-only data */
+	RO_DATA(PAGE_SIZE)
+
+#ifdef CONFIG_PPC32
+	.sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {
+		*(.sdata2)
+	}
+#endif
+
+	.data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) {
+		*(.data.rel.ro .data.rel.ro.*)
+	}
+
+	.branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) {
+		*(.branch_lt)
+	}
+
+#ifdef CONFIG_PPC32
+	.got1 : AT(ADDR(.got1) - LOAD_OFFSET) {
+		*(.got1)
+	}
+	.got2 : AT(ADDR(.got2) - LOAD_OFFSET) {
+		__got2_start = .;
+		*(.got2)
+		__got2_end = .;
+	}
+	.got : AT(ADDR(.got) - LOAD_OFFSET) {
+		*(.got)
+		*(.got.plt)
+	}
+	.plt : AT(ADDR(.plt) - LOAD_OFFSET) {
+		/* XXX: is .plt (and .got.plt) required? */
+		*(.plt)
+	}
+
+#else /* CONFIG_PPC32 */
+#ifndef CONFIG_PPC_KERNEL_PCREL
+	.toc1 : AT(ADDR(.toc1) - LOAD_OFFSET) {
+		*(.toc1)
+	}
+#endif
+
+	.got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) {
+#ifdef CONFIG_PPC_KERNEL_PCREL
+		*(.got)
+#else
+		*(.got .toc)
+#endif
+	}
+
+	SOFT_MASK_TABLE(8)
+	RESTART_TABLE(8)
+
+#ifdef CONFIG_PPC64_ELF_ABI_V1
+	.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
+		__start_opd = .;
+		KEEP(*(.opd))
+		__end_opd = .;
+	}
+#endif
+
+	. = ALIGN(8);
+	__stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) {
+		__start___stf_entry_barrier_fixup = .;
+		*(__stf_entry_barrier_fixup)
+		__stop___stf_entry_barrier_fixup = .;
+	}
+
+	. = ALIGN(8);
+	__uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) {
+		__start___uaccess_flush_fixup = .;
+		*(__uaccess_flush_fixup)
+		__stop___uaccess_flush_fixup = .;
+	}
+
+	. = ALIGN(8);
+	__entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) {
+		__start___entry_flush_fixup = .;
+		*(__entry_flush_fixup)
+		__stop___entry_flush_fixup = .;
+	}
+
+	. = ALIGN(8);
+	__scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) {
+		__start___scv_entry_flush_fixup = .;
+		*(__scv_entry_flush_fixup)
+		__stop___scv_entry_flush_fixup = .;
+	}
+
+	. = ALIGN(8);
+	__stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) {
+		__start___stf_exit_barrier_fixup = .;
+		*(__stf_exit_barrier_fixup)
+		__stop___stf_exit_barrier_fixup = .;
+	}
+
+	. = ALIGN(8);
+	__rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) {
+		__start___rfi_flush_fixup = .;
+		*(__rfi_flush_fixup)
+		__stop___rfi_flush_fixup = .;
+	}
+#endif /* CONFIG_PPC32 */
+
+#ifdef CONFIG_PPC_BARRIER_NOSPEC
+	. = ALIGN(8);
+	__spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) {
+		__start___barrier_nospec_fixup = .;
+		*(__barrier_nospec_fixup)
+		__stop___barrier_nospec_fixup = .;
+	}
+#endif /* CONFIG_PPC_BARRIER_NOSPEC */
+
+#ifdef CONFIG_PPC_E500
+	. = ALIGN(8);
+	__spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) {
+		__start__btb_flush_fixup = .;
+		*(__btb_flush_fixup)
+		__stop__btb_flush_fixup = .;
+	}
+#endif
+
+	/*
+	 * Various code relies on __init_begin being at the strict RWX boundary.
+	 */
+	. = ALIGN(STRICT_ALIGN_SIZE);
+	__srwx_boundary = .;
+	__end_rodata = .;
+	__init_begin = .;
+
+/*
+ * Init sections discarded at runtime
+ */
+	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
+		_sinittext = .;
+		INIT_TEXT
+
+		/*
+		 *.init.text might be RO so we must ensure this section ends on
+		 * a page boundary.
+		 */
+		. = ALIGN(PAGE_SIZE);
+		_einittext = .;
+		*(.tramp.ftrace.init);
+	} :text
+
+	/* .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
+	}
+
+	. = ALIGN(PAGE_SIZE);
+
+	INIT_DATA_SECTION(16)
+
+	. = ALIGN(8);
+	__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
+		__start___ftr_fixup = .;
+		KEEP(*(__ftr_fixup))
+		__stop___ftr_fixup = .;
+	}
+	. = ALIGN(8);
+	__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
+		__start___mmu_ftr_fixup = .;
+		KEEP(*(__mmu_ftr_fixup))
+		__stop___mmu_ftr_fixup = .;
+	}
+	. = ALIGN(8);
+	__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
+		__start___lwsync_fixup = .;
+		KEEP(*(__lwsync_fixup))
+		__stop___lwsync_fixup = .;
+	}
+#ifdef CONFIG_PPC64
+	. = ALIGN(8);
+	__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
+		__start___fw_ftr_fixup = .;
+		KEEP(*(__fw_ftr_fixup))
+		__stop___fw_ftr_fixup = .;
+	}
+#endif
+
+	PERCPU_SECTION(L1_CACHE_BYTES)
+
+	. = ALIGN(8);
+	.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
+		__machine_desc_start = . ;
+		KEEP(*(.machine.desc))
+		__machine_desc_end = . ;
+	}
+#ifdef CONFIG_RELOCATABLE
+	. = ALIGN(8);
+	.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET)
+	{
+		__dynamic_symtab = .;
+		*(.dynsym)
+	}
+	.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
+	.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET)
+	{
+		__dynamic_start = .;
+		*(.dynamic)
+	}
+	.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) }
+	.gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) }
+	.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) }
+	.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET)
+	{
+		__rela_dyn_start = .;
+		*(.rela*)
+	}
+#endif
+	/* .exit.data is discarded at runtime, not link time,
+	 * to deal with references from .exit.text
+	 */
+	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
+		EXIT_DATA
+	}
+
+	/* freed after init ends here */
+	. = ALIGN(PAGE_SIZE);
+	__init_end = .;
+
+/*
+ * And now the various read/write data
+ */
+
+	. = ALIGN(PAGE_SIZE);
+	_sdata = .;
+
+	.data : AT(ADDR(.data) - LOAD_OFFSET) {
+		DATA_DATA
+		*(.data.rel*)
+#ifdef CONFIG_PPC32
+		*(SDATA_MAIN)
+#endif
+	}
+
+	/* The initial task and kernel stack */
+	INIT_TASK_DATA_SECTION(THREAD_ALIGN)
+
+	.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
+	}
+
+	BUG_TABLE
+
+	. = ALIGN(PAGE_SIZE);
+	_edata  =  .;
+	PROVIDE32 (edata = .);
+
+/*
+ * And finally the bss
+ */
+
+	BSS_SECTION(0, 0, 0)
+
+	. = ALIGN(PAGE_SIZE);
+	_end = . ;
+	PROVIDE32 (end = .);
+
+	DWARF_DEBUG
+	ELF_DETAILS
+
+	DISCARDS
+	/DISCARD/ : {
+		*(*.EMB.apuinfo)
+		*(.glink .iplt .plt)
+		*(.gnu.version*)
+		*(.gnu.attributes)
+		*(.eh_frame)
+#ifndef CONFIG_RELOCATABLE
+		*(.rela*)
+#endif
+	}
+}