diff options
Diffstat (limited to 'arch/x86/realmode')
| -rw-r--r-- | arch/x86/realmode/init.c | 2 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/header.S | 8 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/realmode.lds.S | 1 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/reboot.S | 13 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/stack.S | 14 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/trampoline_32.S | 16 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/trampoline_64.S | 29 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/trampoline_common.S | 2 | ||||
| -rw-r--r-- | arch/x86/realmode/rm/wakeup_asm.S | 17 | ||||
| -rw-r--r-- | arch/x86/realmode/rmpiggy.S | 10 |
10 files changed, 58 insertions, 54 deletions
diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c index 7dce39c8c034..262f83cad355 100644 --- a/arch/x86/realmode/init.c +++ b/arch/x86/realmode/init.c @@ -8,6 +8,7 @@ #include <asm/pgtable.h> #include <asm/realmode.h> #include <asm/tlbflush.h> +#include <asm/crash.h> struct real_mode_header *real_mode_header; u32 *trampoline_cr4_features; @@ -34,6 +35,7 @@ void __init reserve_real_mode(void) memblock_reserve(mem, size); set_real_mode_mem(mem); + crash_reserve_low_1M(); } static void __init setup_real_mode(void) diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S index 6363761cc74c..af04512c02d9 100644 --- a/arch/x86/realmode/rm/header.S +++ b/arch/x86/realmode/rm/header.S @@ -14,7 +14,7 @@ .section ".header", "a" .balign 16 -GLOBAL(real_mode_header) +SYM_DATA_START(real_mode_header) .long pa_text_start .long pa_ro_end /* SMP trampoline */ @@ -33,11 +33,9 @@ GLOBAL(real_mode_header) #ifdef CONFIG_X86_64 .long __KERNEL32_CS #endif -END(real_mode_header) +SYM_DATA_END(real_mode_header) /* End signature, used to verify integrity */ .section ".signature","a" .balign 4 -GLOBAL(end_signature) - .long REALMODE_END_SIGNATURE -END(end_signature) +SYM_DATA(end_signature, .long REALMODE_END_SIGNATURE) diff --git a/arch/x86/realmode/rm/realmode.lds.S b/arch/x86/realmode/rm/realmode.lds.S index 3bb980800c58..64d135d1ee63 100644 --- a/arch/x86/realmode/rm/realmode.lds.S +++ b/arch/x86/realmode/rm/realmode.lds.S @@ -11,6 +11,7 @@ OUTPUT_FORMAT("elf32-i386") OUTPUT_ARCH(i386) +ENTRY(pa_text_start) SECTIONS { diff --git a/arch/x86/realmode/rm/reboot.S b/arch/x86/realmode/rm/reboot.S index cd2f97b9623b..f10515b10e0a 100644 --- a/arch/x86/realmode/rm/reboot.S +++ b/arch/x86/realmode/rm/reboot.S @@ -19,7 +19,7 @@ */ .section ".text32", "ax" .code32 -ENTRY(machine_real_restart_asm) +SYM_CODE_START(machine_real_restart_asm) #ifdef CONFIG_X86_64 /* Switch to trampoline GDT as it is guaranteed < 4 GiB */ @@ -33,7 +33,7 @@ ENTRY(machine_real_restart_asm) movl %eax, %cr0 ljmpl $__KERNEL32_CS, $pa_machine_real_restart_paging_off -GLOBAL(machine_real_restart_paging_off) +SYM_INNER_LABEL(machine_real_restart_paging_off, SYM_L_GLOBAL) xorl %eax, %eax xorl %edx, %edx movl $MSR_EFER, %ecx @@ -63,6 +63,7 @@ GLOBAL(machine_real_restart_paging_off) movl %ecx, %gs movl %ecx, %ss ljmpw $8, $1f +SYM_CODE_END(machine_real_restart_asm) /* * This is 16-bit protected mode code to disable paging and the cache, @@ -127,13 +128,13 @@ bios: .section ".rodata", "a" .balign 16 -GLOBAL(machine_real_restart_idt) +SYM_DATA_START(machine_real_restart_idt) .word 0xffff /* Length - real mode default value */ .long 0 /* Base - real mode default value */ -END(machine_real_restart_idt) +SYM_DATA_END(machine_real_restart_idt) .balign 16 -GLOBAL(machine_real_restart_gdt) +SYM_DATA_START(machine_real_restart_gdt) /* Self-pointer */ .word 0xffff /* Length - real mode default value */ .long pa_machine_real_restart_gdt @@ -153,4 +154,4 @@ GLOBAL(machine_real_restart_gdt) * semantics we don't have to reload the segments once CR0.PE = 0. */ .quad GDT_ENTRY(0x0093, 0x100, 0xffff) -END(machine_real_restart_gdt) +SYM_DATA_END(machine_real_restart_gdt) diff --git a/arch/x86/realmode/rm/stack.S b/arch/x86/realmode/rm/stack.S index 8d4cb64799ea..0fca64061ad2 100644 --- a/arch/x86/realmode/rm/stack.S +++ b/arch/x86/realmode/rm/stack.S @@ -6,15 +6,13 @@ #include <linux/linkage.h> .data -GLOBAL(HEAP) - .long rm_heap -GLOBAL(heap_end) - .long rm_stack +SYM_DATA(HEAP, .long rm_heap) +SYM_DATA(heap_end, .long rm_stack) .bss .balign 16 -GLOBAL(rm_heap) - .space 2048 -GLOBAL(rm_stack) +SYM_DATA(rm_heap, .space 2048) + +SYM_DATA_START(rm_stack) .space 2048 -GLOBAL(rm_stack_end) +SYM_DATA_END_LABEL(rm_stack, SYM_L_GLOBAL, rm_stack_end) diff --git a/arch/x86/realmode/rm/trampoline_32.S b/arch/x86/realmode/rm/trampoline_32.S index 1868b158480d..3fad907a179f 100644 --- a/arch/x86/realmode/rm/trampoline_32.S +++ b/arch/x86/realmode/rm/trampoline_32.S @@ -29,7 +29,7 @@ .code16 .balign PAGE_SIZE -ENTRY(trampoline_start) +SYM_CODE_START(trampoline_start) wbinvd # Needed for NUMA-Q should be harmless for others LJMPW_RM(1f) @@ -54,18 +54,20 @@ ENTRY(trampoline_start) lmsw %dx # into protected mode ljmpl $__BOOT_CS, $pa_startup_32 +SYM_CODE_END(trampoline_start) .section ".text32","ax" .code32 -ENTRY(startup_32) # note: also used from wakeup_asm.S +SYM_CODE_START(startup_32) # note: also used from wakeup_asm.S jmp *%eax +SYM_CODE_END(startup_32) .bss .balign 8 -GLOBAL(trampoline_header) - tr_start: .space 4 - tr_gdt_pad: .space 2 - tr_gdt: .space 6 -END(trampoline_header) +SYM_DATA_START(trampoline_header) + SYM_DATA_LOCAL(tr_start, .space 4) + SYM_DATA_LOCAL(tr_gdt_pad, .space 2) + SYM_DATA_LOCAL(tr_gdt, .space 6) +SYM_DATA_END(trampoline_header) #include "trampoline_common.S" diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S index aee2b45d83b8..251758ed7443 100644 --- a/arch/x86/realmode/rm/trampoline_64.S +++ b/arch/x86/realmode/rm/trampoline_64.S @@ -38,7 +38,7 @@ .code16 .balign PAGE_SIZE -ENTRY(trampoline_start) +SYM_CODE_START(trampoline_start) cli # We should be safe anyway wbinvd @@ -78,12 +78,14 @@ ENTRY(trampoline_start) no_longmode: hlt jmp no_longmode +SYM_CODE_END(trampoline_start) + #include "../kernel/verify_cpu.S" .section ".text32","ax" .code32 .balign 4 -ENTRY(startup_32) +SYM_CODE_START(startup_32) movl %edx, %ss addl $pa_real_mode_base, %esp movl %edx, %ds @@ -137,38 +139,39 @@ ENTRY(startup_32) * the new gdt/idt that has __KERNEL_CS with CS.L = 1. */ ljmpl $__KERNEL_CS, $pa_startup_64 +SYM_CODE_END(startup_32) .section ".text64","ax" .code64 .balign 4 -ENTRY(startup_64) +SYM_CODE_START(startup_64) # Now jump into the kernel using virtual addresses jmpq *tr_start(%rip) +SYM_CODE_END(startup_64) .section ".rodata","a" # Duplicate the global descriptor table # so the kernel can live anywhere .balign 16 - .globl tr_gdt -tr_gdt: +SYM_DATA_START(tr_gdt) .short tr_gdt_end - tr_gdt - 1 # gdt limit .long pa_tr_gdt .short 0 .quad 0x00cf9b000000ffff # __KERNEL32_CS .quad 0x00af9b000000ffff # __KERNEL_CS .quad 0x00cf93000000ffff # __KERNEL_DS -tr_gdt_end: +SYM_DATA_END_LABEL(tr_gdt, SYM_L_LOCAL, tr_gdt_end) .bss .balign PAGE_SIZE -GLOBAL(trampoline_pgd) .space PAGE_SIZE +SYM_DATA(trampoline_pgd, .space PAGE_SIZE) .balign 8 -GLOBAL(trampoline_header) - tr_start: .space 8 - GLOBAL(tr_efer) .space 8 - GLOBAL(tr_cr4) .space 4 - GLOBAL(tr_flags) .space 4 -END(trampoline_header) +SYM_DATA_START(trampoline_header) + SYM_DATA_LOCAL(tr_start, .space 8) + SYM_DATA(tr_efer, .space 8) + SYM_DATA(tr_cr4, .space 4) + SYM_DATA(tr_flags, .space 4) +SYM_DATA_END(trampoline_header) #include "trampoline_common.S" diff --git a/arch/x86/realmode/rm/trampoline_common.S b/arch/x86/realmode/rm/trampoline_common.S index 8d8208dcca24..5033e640f957 100644 --- a/arch/x86/realmode/rm/trampoline_common.S +++ b/arch/x86/realmode/rm/trampoline_common.S @@ -1,4 +1,4 @@ /* SPDX-License-Identifier: GPL-2.0 */ .section ".rodata","a" .balign 16 -tr_idt: .fill 1, 6, 0 +SYM_DATA_LOCAL(tr_idt, .fill 1, 6, 0) diff --git a/arch/x86/realmode/rm/wakeup_asm.S b/arch/x86/realmode/rm/wakeup_asm.S index 05ac9c17c811..02d0ba16ae33 100644 --- a/arch/x86/realmode/rm/wakeup_asm.S +++ b/arch/x86/realmode/rm/wakeup_asm.S @@ -17,7 +17,7 @@ .section ".data", "aw" .balign 16 -GLOBAL(wakeup_header) +SYM_DATA_START(wakeup_header) video_mode: .short 0 /* Video mode number */ pmode_entry: .long 0 pmode_cs: .short __KERNEL_CS @@ -31,13 +31,13 @@ GLOBAL(wakeup_header) realmode_flags: .long 0 real_magic: .long 0 signature: .long WAKEUP_HEADER_SIGNATURE -END(wakeup_header) +SYM_DATA_END(wakeup_header) .text .code16 .balign 16 -ENTRY(wakeup_start) +SYM_CODE_START(wakeup_start) cli cld @@ -73,7 +73,7 @@ ENTRY(wakeup_start) movw %ax, %fs movw %ax, %gs - lidtl wakeup_idt + lidtl .Lwakeup_idt /* Clear the EFLAGS */ pushl $0 @@ -135,6 +135,7 @@ ENTRY(wakeup_start) #else jmp trampoline_start #endif +SYM_CODE_END(wakeup_start) bogus_real_magic: 1: @@ -152,7 +153,7 @@ bogus_real_magic: */ .balign 16 -GLOBAL(wakeup_gdt) +SYM_DATA_START(wakeup_gdt) .word 3*8-1 /* Self-descriptor */ .long pa_wakeup_gdt .word 0 @@ -164,15 +165,15 @@ GLOBAL(wakeup_gdt) .word 0xffff /* 16-bit data segment @ real_mode_base */ .long 0x93000000 + pa_real_mode_base .word 0x008f /* big real mode */ -END(wakeup_gdt) +SYM_DATA_END(wakeup_gdt) .section ".rodata","a" .balign 8 /* This is the standard real-mode IDT */ .balign 16 -GLOBAL(wakeup_idt) +SYM_DATA_START_LOCAL(.Lwakeup_idt) .word 0xffff /* limit */ .long 0 /* address */ .word 0 -END(wakeup_idt) +SYM_DATA_END(.Lwakeup_idt) diff --git a/arch/x86/realmode/rmpiggy.S b/arch/x86/realmode/rmpiggy.S index c078dba40cef..c8fef76743f6 100644 --- a/arch/x86/realmode/rmpiggy.S +++ b/arch/x86/realmode/rmpiggy.S @@ -10,12 +10,10 @@ .balign PAGE_SIZE -GLOBAL(real_mode_blob) +SYM_DATA_START(real_mode_blob) .incbin "arch/x86/realmode/rm/realmode.bin" -END(real_mode_blob) +SYM_DATA_END_LABEL(real_mode_blob, SYM_L_GLOBAL, real_mode_blob_end) -GLOBAL(real_mode_blob_end); - -GLOBAL(real_mode_relocs) +SYM_DATA_START(real_mode_relocs) .incbin "arch/x86/realmode/rm/realmode.relocs" -END(real_mode_relocs) +SYM_DATA_END(real_mode_relocs) |