diff options
Diffstat (limited to 'arch/x86/realmode/rm/wakeup')
-rw-r--r-- | arch/x86/realmode/rm/wakeup/.gitignore | 3 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/Makefile | 33 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/bioscall.S | 1 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/copy.S | 1 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/regs.c | 1 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/video-bios.c | 1 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/video-mode.c | 1 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/video-vesa.c | 1 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/video-vga.c | 1 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/wakemain.c | 82 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/wakeup.h | 41 | ||||
-rw-r--r-- | arch/x86/realmode/rm/wakeup/wakeup_asm.S | 181 |
12 files changed, 0 insertions, 347 deletions
diff --git a/arch/x86/realmode/rm/wakeup/.gitignore b/arch/x86/realmode/rm/wakeup/.gitignore deleted file mode 100644 index 58f1f48a58f..00000000000 --- a/arch/x86/realmode/rm/wakeup/.gitignore +++ /dev/null @@ -1,3 +0,0 @@ -wakeup.bin -wakeup.elf -wakeup.lds diff --git a/arch/x86/realmode/rm/wakeup/Makefile b/arch/x86/realmode/rm/wakeup/Makefile deleted file mode 100644 index 4c8533240cd..00000000000 --- a/arch/x86/realmode/rm/wakeup/Makefile +++ /dev/null @@ -1,33 +0,0 @@ -# -# arch/x86/kernel/acpi/realmode/Makefile -# -# This file is subject to the terms and conditions of the GNU General Public -# License. See the file "COPYING" in the main directory of this archive -# for more details. -# - -always := wakeup.o - -wakeup-y += wakeup_asm.o wakemain.o video-mode.o -wakeup-y += copy.o bioscall.o regs.o - -# The link order of the video-*.o modules can matter. In particular, -# video-vga.o *must* be listed first, followed by video-vesa.o. -# Hardware-specific drivers should follow in the order they should be -# probed, and video-bios.o should typically be last. -wakeup-y += video-vga.o -wakeup-y += video-vesa.o -wakeup-y += video-bios.o - -targets += $(wakeup-y) - -WAKEUP_OBJS = $(addprefix $(obj)/,$(wakeup-y)) - -LDFLAGS_wakeup.o := -m elf_i386 -r -$(obj)/wakeup.o: $(WAKEUP_OBJS) FORCE - $(call if_changed,ld) - -bootsrc := $(src)/../../../boot - -ccflags-y += -D_WAKEUP -I$(srctree)/$(bootsrc) -asflags-y += -D_WAKEUP -I$(srctree)/$(bootsrc) diff --git a/arch/x86/realmode/rm/wakeup/bioscall.S b/arch/x86/realmode/rm/wakeup/bioscall.S deleted file mode 100644 index f51eb0bb56c..00000000000 --- a/arch/x86/realmode/rm/wakeup/bioscall.S +++ /dev/null @@ -1 +0,0 @@ -#include "../../../boot/bioscall.S" diff --git a/arch/x86/realmode/rm/wakeup/copy.S b/arch/x86/realmode/rm/wakeup/copy.S deleted file mode 100644 index dc59ebee69d..00000000000 --- a/arch/x86/realmode/rm/wakeup/copy.S +++ /dev/null @@ -1 +0,0 @@ -#include "../../../boot/copy.S" diff --git a/arch/x86/realmode/rm/wakeup/regs.c b/arch/x86/realmode/rm/wakeup/regs.c deleted file mode 100644 index 6206033ba20..00000000000 --- a/arch/x86/realmode/rm/wakeup/regs.c +++ /dev/null @@ -1 +0,0 @@ -#include "../../../boot/regs.c" diff --git a/arch/x86/realmode/rm/wakeup/video-bios.c b/arch/x86/realmode/rm/wakeup/video-bios.c deleted file mode 100644 index 7deabc144a2..00000000000 --- a/arch/x86/realmode/rm/wakeup/video-bios.c +++ /dev/null @@ -1 +0,0 @@ -#include "../../../boot/video-bios.c" diff --git a/arch/x86/realmode/rm/wakeup/video-mode.c b/arch/x86/realmode/rm/wakeup/video-mode.c deleted file mode 100644 index 328ad209f11..00000000000 --- a/arch/x86/realmode/rm/wakeup/video-mode.c +++ /dev/null @@ -1 +0,0 @@ -#include "../../../boot/video-mode.c" diff --git a/arch/x86/realmode/rm/wakeup/video-vesa.c b/arch/x86/realmode/rm/wakeup/video-vesa.c deleted file mode 100644 index 9dbb9672226..00000000000 --- a/arch/x86/realmode/rm/wakeup/video-vesa.c +++ /dev/null @@ -1 +0,0 @@ -#include "../../../boot/video-vesa.c" diff --git a/arch/x86/realmode/rm/wakeup/video-vga.c b/arch/x86/realmode/rm/wakeup/video-vga.c deleted file mode 100644 index bcc81255f37..00000000000 --- a/arch/x86/realmode/rm/wakeup/video-vga.c +++ /dev/null @@ -1 +0,0 @@ -#include "../../../boot/video-vga.c" diff --git a/arch/x86/realmode/rm/wakeup/wakemain.c b/arch/x86/realmode/rm/wakeup/wakemain.c deleted file mode 100644 index 91405d515ec..00000000000 --- a/arch/x86/realmode/rm/wakeup/wakemain.c +++ /dev/null @@ -1,82 +0,0 @@ -#include "wakeup.h" -#include "boot.h" - -static void udelay(int loops) -{ - while (loops--) - io_delay(); /* Approximately 1 us */ -} - -static void beep(unsigned int hz) -{ - u8 enable; - - if (!hz) { - enable = 0x00; /* Turn off speaker */ - } else { - u16 div = 1193181/hz; - - outb(0xb6, 0x43); /* Ctr 2, squarewave, load, binary */ - io_delay(); - outb(div, 0x42); /* LSB of counter */ - io_delay(); - outb(div >> 8, 0x42); /* MSB of counter */ - io_delay(); - - enable = 0x03; /* Turn on speaker */ - } - inb(0x61); /* Dummy read of System Control Port B */ - io_delay(); - outb(enable, 0x61); /* Enable timer 2 output to speaker */ - io_delay(); -} - -#define DOT_HZ 880 -#define DASH_HZ 587 -#define US_PER_DOT 125000 - -/* Okay, this is totally silly, but it's kind of fun. */ -static void send_morse(const char *pattern) -{ - char s; - - while ((s = *pattern++)) { - switch (s) { - case '.': - beep(DOT_HZ); - udelay(US_PER_DOT); - beep(0); - udelay(US_PER_DOT); - break; - case '-': - beep(DASH_HZ); - udelay(US_PER_DOT * 3); - beep(0); - udelay(US_PER_DOT); - break; - default: /* Assume it's a space */ - udelay(US_PER_DOT * 3); - break; - } - } -} - -void main(void) -{ - /* Kill machine if structures are wrong */ - if (wakeup_header.real_magic != 0x12345678) - while (1) - ; - - if (wakeup_header.realmode_flags & 4) - send_morse("...-"); - - if (wakeup_header.realmode_flags & 1) - asm volatile("lcallw $0xc000,$3"); - - if (wakeup_header.realmode_flags & 2) { - /* Need to call BIOS */ - probe_cards(0); - set_mode(wakeup_header.video_mode); - } -} diff --git a/arch/x86/realmode/rm/wakeup/wakeup.h b/arch/x86/realmode/rm/wakeup/wakeup.h deleted file mode 100644 index 2dfaf06b8af..00000000000 --- a/arch/x86/realmode/rm/wakeup/wakeup.h +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Definitions for the wakeup data structure at the head of the - * wakeup code. - */ - -#ifndef ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H -#define ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H - -#ifndef __ASSEMBLY__ -#include <linux/types.h> - -/* This must match data at wakeup.S */ -struct wakeup_header { - u16 video_mode; /* Video mode number */ - u32 pmode_entry; /* Protected mode resume point, 32-bit only */ - u16 pmode_cs; - u32 pmode_cr0; /* Protected mode cr0 */ - u32 pmode_cr3; /* Protected mode cr3 */ - u32 pmode_cr4; /* Protected mode cr4 */ - u32 pmode_efer_low; /* Protected mode EFER */ - u32 pmode_efer_high; - u64 pmode_gdt; - u32 pmode_misc_en_low; /* Protected mode MISC_ENABLE */ - u32 pmode_misc_en_high; - u32 pmode_behavior; /* Wakeup routine behavior flags */ - u32 realmode_flags; - u32 real_magic; - u32 signature; /* To check we have correct structure */ -} __attribute__((__packed__)); - -extern struct wakeup_header wakeup_header; -#endif - -#define WAKEUP_HEADER_OFFSET 8 -#define WAKEUP_HEADER_SIGNATURE 0x51ee1111 -#define WAKEUP_END_SIGNATURE 0x65a22c82 - -/* Wakeup behavior bits */ -#define WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE 0 - -#endif /* ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H */ diff --git a/arch/x86/realmode/rm/wakeup/wakeup_asm.S b/arch/x86/realmode/rm/wakeup/wakeup_asm.S deleted file mode 100644 index f81c1cd99ea..00000000000 --- a/arch/x86/realmode/rm/wakeup/wakeup_asm.S +++ /dev/null @@ -1,181 +0,0 @@ -/* - * ACPI wakeup real mode startup stub - */ -#include <linux/linkage.h> -#include <asm/segment.h> -#include <asm/msr-index.h> -#include <asm/page_types.h> -#include <asm/pgtable_types.h> -#include <asm/processor-flags.h> -#include "../realmode.h" -#include "wakeup.h" - - .code16 - -/* This should match the structure in wakeup.h */ - .section ".data", "aw" - - .balign 16 -GLOBAL(wakeup_header) - video_mode: .short 0 /* Video mode number */ - pmode_entry: .long 0 - pmode_cs: .short __KERNEL_CS - pmode_cr0: .long 0 /* Saved %cr0 */ - pmode_cr3: .long 0 /* Saved %cr3 */ - pmode_cr4: .long 0 /* Saved %cr4 */ - pmode_efer: .quad 0 /* Saved EFER */ - pmode_gdt: .quad 0 - pmode_misc_en: .quad 0 /* Saved MISC_ENABLE MSR */ - pmode_behavior: .long 0 /* Wakeup behavior flags */ - realmode_flags: .long 0 - real_magic: .long 0 - signature: .long WAKEUP_HEADER_SIGNATURE -END(wakeup_header) - - .text - .code16 - - .balign 16 -ENTRY(wakeup_start) - cli - cld - - LJMPW_RM(3f) -3: - /* Apparently some dimwit BIOS programmers don't know how to - program a PM to RM transition, and we might end up here with - junk in the data segment descriptor registers. The only way - to repair that is to go into PM and fix it ourselves... */ - movw $16, %cx - lgdtl %cs:wakeup_gdt - movl %cr0, %eax - orb $X86_CR0_PE, %al - movl %eax, %cr0 - ljmpw $8, $2f -2: - movw %cx, %ds - movw %cx, %es - movw %cx, %ss - movw %cx, %fs - movw %cx, %gs - - andb $~X86_CR0_PE, %al - movl %eax, %cr0 - LJMPW_RM(3f) -3: - /* Set up segments */ - movw %cs, %ax - movw %ax, %ss - movl $rm_stack_end, %esp - movw %ax, %ds - movw %ax, %es - movw %ax, %fs - movw %ax, %gs - - lidtl wakeup_idt - - /* Clear the EFLAGS */ - pushl $0 - popfl - - /* Check header signature... */ - movl signature, %eax - cmpl $WAKEUP_HEADER_SIGNATURE, %eax - jne bogus_real_magic - - /* Check we really have everything... */ - movl end_signature, %eax - cmpl $WAKEUP_END_SIGNATURE, %eax - jne bogus_real_magic - - /* Call the C code */ - calll main - - /* Restore MISC_ENABLE before entering protected mode, in case - BIOS decided to clear XD_DISABLE during S3. */ - movl pmode_behavior, %eax - btl $WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE, %eax - jnc 1f - - movl pmode_misc_en, %eax - movl pmode_misc_en + 4, %edx - movl $MSR_IA32_MISC_ENABLE, %ecx - wrmsr -1: - - /* Do any other stuff... */ - -#ifndef CONFIG_64BIT - /* This could also be done in C code... */ - movl pmode_cr3, %eax - movl %eax, %cr3 - - movl pmode_cr4, %ecx - jecxz 1f - movl %ecx, %cr4 -1: - movl pmode_efer, %eax - movl pmode_efer + 4, %edx - movl %eax, %ecx - orl %edx, %ecx - jz 1f - movl $MSR_EFER, %ecx - wrmsr -1: - - lgdtl pmode_gdt - - /* This really couldn't... */ - movl pmode_entry, %eax - movl pmode_cr0, %ecx - movl %ecx, %cr0 - ljmpl $__KERNEL_CS, $pa_startup_32 - /* -> jmp *%eax in trampoline_32.S */ -#else - jmp trampoline_data -#endif - -bogus_real_magic: -1: - hlt - jmp 1b - - .section ".rodata","a" - - /* - * Set up the wakeup GDT. We set these up as Big Real Mode, - * that is, with limits set to 4 GB. At least the Lenovo - * Thinkpad X61 is known to need this for the video BIOS - * initialization quirk to work; this is likely to also - * be the case for other laptops or integrated video devices. - */ - - .balign 16 -GLOBAL(wakeup_gdt) - .word 3*8-1 /* Self-descriptor */ - .long pa_wakeup_gdt - .word 0 - - .word 0xffff /* 16-bit code segment @ real_mode_base */ - .long 0x9b000000 + pa_real_mode_base - .word 0x008f /* big real mode */ - - .word 0xffff /* 16-bit data segment @ real_mode_base */ - .long 0x93000000 + pa_real_mode_base - .word 0x008f /* big real mode */ -END(wakeup_gdt) - - .section ".rodata","a" - .balign 8 - - /* This is the standard real-mode IDT */ - .balign 16 -GLOBAL(wakeup_idt) - .word 0xffff /* limit */ - .long 0 /* address */ - .word 0 -END(wakeup_idt) - - .section ".signature","a" -end_signature: - .long WAKEUP_END_SIGNATURE |