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390 lines
8.3 KiB
390 lines
8.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifdef CONFIG_PPC64 |
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#define PROVIDE32(x) PROVIDE(__unused__##x) |
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#else |
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#define PROVIDE32(x) PROVIDE(x) |
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#endif |
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#define BSS_FIRST_SECTIONS *(.bss.prominit) |
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#define EMITS_PT_NOTE |
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#define RO_EXCEPTION_TABLE_ALIGN 0 |
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#include <asm/page.h> |
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#include <asm-generic/vmlinux.lds.h> |
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#include <asm/cache.h> |
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#include <asm/thread_info.h> |
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#define STRICT_ALIGN_SIZE (1 << CONFIG_DATA_SHIFT) |
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ENTRY(_stext) |
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PHDRS { |
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text PT_LOAD FLAGS(7); /* RWX */ |
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note PT_NOTE FLAGS(0); |
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} |
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#ifdef CONFIG_PPC64 |
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OUTPUT_ARCH(powerpc:common64) |
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jiffies = jiffies_64; |
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#else |
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OUTPUT_ARCH(powerpc:common) |
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jiffies = jiffies_64 + 4; |
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#endif |
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SECTIONS |
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{ |
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. = KERNELBASE; |
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/* |
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* Text, read only data and other permanent read-only sections |
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*/ |
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_text = .; |
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_stext = .; |
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/* |
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* Head text. |
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* This needs to be in its own output section to avoid ld placing |
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* branch trampoline stubs randomly throughout the fixed sections, |
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* which it will do (even if the branch comes from another section) |
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* in order to optimize stub generation. |
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*/ |
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.head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { |
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#ifdef CONFIG_PPC64 |
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KEEP(*(.head.text.first_256B)); |
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#ifdef CONFIG_PPC_BOOK3E |
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#else |
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KEEP(*(.head.text.real_vectors)); |
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*(.head.text.real_trampolines); |
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KEEP(*(.head.text.virt_vectors)); |
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*(.head.text.virt_trampolines); |
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# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) |
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KEEP(*(.head.data.fwnmi_page)); |
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# endif |
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#endif |
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#else /* !CONFIG_PPC64 */ |
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HEAD_TEXT |
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#endif |
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} :text |
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__head_end = .; |
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#ifdef CONFIG_PPC64 |
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/* |
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* ALIGN(0) overrides the default output section alignment because |
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* this needs to start right after .head.text in order for fixed |
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* section placement to work. |
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*/ |
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.text ALIGN(0) : AT(ADDR(.text) - LOAD_OFFSET) { |
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#ifdef CONFIG_LD_HEAD_STUB_CATCH |
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KEEP(*(.linker_stub_catch)); |
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. = . ; |
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#endif |
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#else |
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.text : AT(ADDR(.text) - LOAD_OFFSET) { |
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ALIGN_FUNCTION(); |
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#endif |
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/* careful! __ftr_alt_* sections need to be close to .text */ |
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*(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text); |
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#ifdef CONFIG_PPC64 |
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*(.tramp.ftrace.text); |
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#endif |
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NOINSTR_TEXT |
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SCHED_TEXT |
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CPUIDLE_TEXT |
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LOCK_TEXT |
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KPROBES_TEXT |
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IRQENTRY_TEXT |
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SOFTIRQENTRY_TEXT |
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/* |
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* -Os builds call FP save/restore functions. The powerpc64 |
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* linker generates those on demand in the .sfpr section. |
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* .sfpr gets placed at the beginning of a group of input |
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* sections, which can break start-of-text offset if it is |
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* included with the main text sections, so put it by itself. |
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*/ |
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*(.sfpr); |
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MEM_KEEP(init.text) |
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MEM_KEEP(exit.text) |
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#ifdef CONFIG_PPC32 |
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*(.got1) |
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__got2_start = .; |
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*(.got2) |
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__got2_end = .; |
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#endif /* CONFIG_PPC32 */ |
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} :text |
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. = ALIGN(PAGE_SIZE); |
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_etext = .; |
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PROVIDE32 (etext = .); |
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/* Read-only data */ |
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RO_DATA(PAGE_SIZE) |
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#ifdef CONFIG_PPC64 |
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. = ALIGN(8); |
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__stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) { |
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__start___stf_entry_barrier_fixup = .; |
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*(__stf_entry_barrier_fixup) |
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__stop___stf_entry_barrier_fixup = .; |
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} |
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. = ALIGN(8); |
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__uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) { |
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__start___uaccess_flush_fixup = .; |
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*(__uaccess_flush_fixup) |
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__stop___uaccess_flush_fixup = .; |
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} |
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. = ALIGN(8); |
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__entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) { |
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__start___entry_flush_fixup = .; |
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*(__entry_flush_fixup) |
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__stop___entry_flush_fixup = .; |
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} |
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. = ALIGN(8); |
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__scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) { |
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__start___scv_entry_flush_fixup = .; |
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*(__scv_entry_flush_fixup) |
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__stop___scv_entry_flush_fixup = .; |
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} |
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. = ALIGN(8); |
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__stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) { |
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__start___stf_exit_barrier_fixup = .; |
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*(__stf_exit_barrier_fixup) |
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__stop___stf_exit_barrier_fixup = .; |
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} |
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. = ALIGN(8); |
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__rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) { |
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__start___rfi_flush_fixup = .; |
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*(__rfi_flush_fixup) |
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__stop___rfi_flush_fixup = .; |
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} |
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#endif /* CONFIG_PPC64 */ |
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#ifdef CONFIG_PPC_BARRIER_NOSPEC |
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. = ALIGN(8); |
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__spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) { |
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__start___barrier_nospec_fixup = .; |
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*(__barrier_nospec_fixup) |
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__stop___barrier_nospec_fixup = .; |
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} |
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#endif /* CONFIG_PPC_BARRIER_NOSPEC */ |
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#ifdef CONFIG_PPC_FSL_BOOK3E |
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. = ALIGN(8); |
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__spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) { |
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__start__btb_flush_fixup = .; |
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*(__btb_flush_fixup) |
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__stop__btb_flush_fixup = .; |
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} |
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#endif |
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/* |
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* Init sections discarded at runtime |
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*/ |
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. = ALIGN(STRICT_ALIGN_SIZE); |
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__init_begin = .; |
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. = ALIGN(PAGE_SIZE); |
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.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { |
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_sinittext = .; |
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INIT_TEXT |
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/* |
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*.init.text might be RO so we must ensure this section ends on |
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* a page boundary. |
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*/ |
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. = ALIGN(PAGE_SIZE); |
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_einittext = .; |
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#ifdef CONFIG_PPC64 |
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*(.tramp.ftrace.init); |
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#endif |
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} :text |
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/* .exit.text is discarded at runtime, not link time, |
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* to deal with references from __bug_table |
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*/ |
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.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { |
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EXIT_TEXT |
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} |
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. = ALIGN(PAGE_SIZE); |
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INIT_DATA_SECTION(16) |
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. = ALIGN(8); |
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__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { |
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__start___ftr_fixup = .; |
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KEEP(*(__ftr_fixup)) |
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__stop___ftr_fixup = .; |
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} |
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. = ALIGN(8); |
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__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { |
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__start___mmu_ftr_fixup = .; |
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KEEP(*(__mmu_ftr_fixup)) |
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__stop___mmu_ftr_fixup = .; |
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} |
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. = ALIGN(8); |
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__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { |
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__start___lwsync_fixup = .; |
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KEEP(*(__lwsync_fixup)) |
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__stop___lwsync_fixup = .; |
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} |
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#ifdef CONFIG_PPC64 |
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. = ALIGN(8); |
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__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { |
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__start___fw_ftr_fixup = .; |
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KEEP(*(__fw_ftr_fixup)) |
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__stop___fw_ftr_fixup = .; |
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} |
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#endif |
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PERCPU_SECTION(L1_CACHE_BYTES) |
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. = ALIGN(8); |
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.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { |
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__machine_desc_start = . ; |
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KEEP(*(.machine.desc)) |
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__machine_desc_end = . ; |
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} |
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#ifdef CONFIG_RELOCATABLE |
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. = ALIGN(8); |
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.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) |
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{ |
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#ifdef CONFIG_PPC32 |
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__dynamic_symtab = .; |
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#endif |
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*(.dynsym) |
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} |
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.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } |
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.dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) |
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{ |
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__dynamic_start = .; |
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*(.dynamic) |
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} |
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.hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } |
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.gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) } |
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.interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } |
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.rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) |
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{ |
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__rela_dyn_start = .; |
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*(.rela*) |
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} |
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#endif |
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/* .exit.data is discarded at runtime, not link time, |
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* to deal with references from .exit.text |
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*/ |
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.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { |
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EXIT_DATA |
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} |
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/* freed after init ends here */ |
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. = ALIGN(PAGE_SIZE); |
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__init_end = .; |
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/* |
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* And now the various read/write data |
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*/ |
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. = ALIGN(PAGE_SIZE); |
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_sdata = .; |
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#ifdef CONFIG_PPC32 |
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.data : AT(ADDR(.data) - LOAD_OFFSET) { |
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DATA_DATA |
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#ifdef CONFIG_UBSAN |
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*(.data..Lubsan_data*) |
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*(.data..Lubsan_type*) |
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#endif |
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*(.data.rel*) |
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*(SDATA_MAIN) |
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*(.sdata2) |
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*(.got.plt) *(.got) |
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*(.plt) |
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*(.branch_lt) |
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} |
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#else |
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.data : AT(ADDR(.data) - LOAD_OFFSET) { |
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DATA_DATA |
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#ifdef CONFIG_UBSAN |
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*(.data..Lubsan_data*) |
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*(.data..Lubsan_type*) |
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#endif |
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*(.data.rel*) |
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*(.toc1) |
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*(.branch_lt) |
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} |
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.opd : AT(ADDR(.opd) - LOAD_OFFSET) { |
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__start_opd = .; |
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KEEP(*(.opd)) |
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__end_opd = .; |
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} |
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. = ALIGN(256); |
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.got : AT(ADDR(.got) - LOAD_OFFSET) { |
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__toc_start = .; |
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#ifndef CONFIG_RELOCATABLE |
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__prom_init_toc_start = .; |
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arch/powerpc/kernel/prom_init.o*(.toc .got) |
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__prom_init_toc_end = .; |
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#endif |
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*(.got) |
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*(.toc) |
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} |
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#endif |
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/* The initial task and kernel stack */ |
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INIT_TASK_DATA_SECTION(THREAD_ALIGN) |
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.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { |
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PAGE_ALIGNED_DATA(PAGE_SIZE) |
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} |
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.data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { |
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CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) |
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} |
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.data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { |
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READ_MOSTLY_DATA(L1_CACHE_BYTES) |
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} |
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. = ALIGN(PAGE_SIZE); |
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.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { |
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NOSAVE_DATA |
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} |
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BUG_TABLE |
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. = ALIGN(PAGE_SIZE); |
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_edata = .; |
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PROVIDE32 (edata = .); |
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/* |
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* And finally the bss |
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*/ |
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BSS_SECTION(0, 0, 0) |
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. = ALIGN(PAGE_SIZE); |
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_end = . ; |
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PROVIDE32 (end = .); |
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STABS_DEBUG |
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DWARF_DEBUG |
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ELF_DETAILS |
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DISCARDS |
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/DISCARD/ : { |
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*(*.EMB.apuinfo) |
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*(.glink .iplt .plt .rela* .comment) |
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*(.gnu.version*) |
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*(.gnu.attributes) |
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*(.eh_frame) |
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} |
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}
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