| /* SPDX-License-Identifier: GPL-2.0 */ |
| #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> |
| |
| #if defined(CONFIG_STRICT_KERNEL_RWX) && !defined(CONFIG_PPC32) |
| #define STRICT_ALIGN_SIZE (1 << 24) |
| #else |
| #define STRICT_ALIGN_SIZE PAGE_SIZE |
| #endif |
| |
| 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 |
| { |
| . = 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 |
| #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 |
| } :kernel |
| |
| __head_end = .; |
| |
| #ifdef CONFIG_PPC64 |
| /* |
| * BLOCK(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 BLOCK(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_MAIN .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text); |
| NOINSTR_TEXT |
| SCHED_TEXT |
| CPUIDLE_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); |
| MEM_KEEP(init.text) |
| MEM_KEEP(exit.text) |
| |
| #ifdef CONFIG_PPC32 |
| *(.got1) |
| __got2_start = .; |
| *(.got2) |
| __got2_end = .; |
| #endif /* CONFIG_PPC32 */ |
| |
| } :kernel |
| |
| . = ALIGN(PAGE_SIZE); |
| _etext = .; |
| PROVIDE32 (etext = .); |
| |
| /* Read-only data */ |
| RO_DATA(PAGE_SIZE) |
| |
| #ifdef CONFIG_PPC64 |
| . = 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); |
| __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_PPC64 */ |
| |
| #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_FSL_BOOK3E |
| . = 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 |
| 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(STRICT_ALIGN_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 = .; |
| KEEP(*(.vtop_fixup)); |
| __vtop_table_end = .; |
| __ptov_table_begin = .; |
| KEEP(*(.ptov_fixup)); |
| __ptov_table_end = .; |
| } |
| |
| .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 = .; |
| 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 |
| .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 = . ; |
| KEEP(*(.machine.desc)) |
| __machine_desc_end = . ; |
| } |
| #ifdef CONFIG_RELOCATABLE |
| . = ALIGN(8); |
| .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) |
| { |
| #ifdef CONFIG_PPC32 |
| __dynamic_symtab = .; |
| #endif |
| *(.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 |
| /* .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 = .; |
| |
| #ifdef CONFIG_PPC32 |
| .data : AT(ADDR(.data) - LOAD_OFFSET) { |
| DATA_DATA |
| #ifdef CONFIG_UBSAN |
| *(.data..Lubsan_data*) |
| *(.data..Lubsan_type*) |
| #endif |
| *(.data.rel*) |
| *(SDATA_MAIN) |
| *(.sdata2) |
| *(.got.plt) *(.got) |
| *(.plt) |
| *(.branch_lt) |
| } |
| #else |
| .data : AT(ADDR(.data) - LOAD_OFFSET) { |
| DATA_DATA |
| *(.data.rel*) |
| *(.toc1) |
| *(.branch_lt) |
| } |
| |
| #ifdef CONFIG_DEBUG_INFO_BTF |
| .BTF : AT(ADDR(.BTF) - LOAD_OFFSET) { |
| *(.BTF) |
| } |
| #endif |
| |
| .opd : AT(ADDR(.opd) - LOAD_OFFSET) { |
| __start_opd = .; |
| KEEP(*(.opd)) |
| __end_opd = .; |
| } |
| |
| . = ALIGN(256); |
| .got : AT(ADDR(.got) - LOAD_OFFSET) { |
| __toc_start = .; |
| #ifndef CONFIG_RELOCATABLE |
| __prom_init_toc_start = .; |
| arch/powerpc/kernel/prom_init.o*(.toc .got) |
| __prom_init_toc_end = .; |
| #endif |
| *(.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 |
| } |
| |
| BUG_TABLE |
| |
| . = ALIGN(PAGE_SIZE); |
| _edata = .; |
| PROVIDE32 (edata = .); |
| |
| /* |
| * And finally the bss |
| */ |
| |
| BSS_SECTION(0, 0, 0) |
| |
| . = ALIGN(PAGE_SIZE); |
| _end = . ; |
| PROVIDE32 (end = .); |
| |
| STABS_DEBUG |
| |
| DWARF_DEBUG |
| |
| DISCARDS |
| /DISCARD/ : { |
| *(*.EMB.apuinfo) |
| *(.glink .iplt .plt .rela* .comment) |
| *(.gnu.version*) |
| *(.gnu.attributes) |
| *(.eh_frame) |
| } |
| } |