diff options
Diffstat (limited to 'qemu/roms/seabios/src/resume.c')
| -rw-r--r-- | qemu/roms/seabios/src/resume.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/qemu/roms/seabios/src/resume.c b/qemu/roms/seabios/src/resume.c deleted file mode 100644 index a5465d877..000000000 --- a/qemu/roms/seabios/src/resume.c +++ /dev/null @@ -1,161 +0,0 @@ -// Code for handling calls to "post" that are resume related. -// -// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net> -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "bregs.h" // struct bregs -#include "config.h" // CONFIG_* -#include "farptr.h" // FLATPTR_TO_SEGOFF -#include "hw/pci.h" // pci_reboot -#include "hw/pic.h" // pic_eoi2 -#include "hw/ps2port.h" // i8042_reboot -#include "hw/rtc.h" // rtc_read -#include "output.h" // dprintf -#include "stacks.h" // farcall16big -#include "std/bda.h" // struct bios_data_area_s -#include "string.h" // memset -#include "util.h" // dma_setup -#include "tcgbios.h" // tpm_s3_resume - -// Handler for post calls that look like a resume. -void VISIBLE16 -handle_resume(void) -{ - ASSERT16(); - int status = rtc_read(CMOS_RESET_CODE); - rtc_write(CMOS_RESET_CODE, 0); - dprintf(1, "In resume (status=%d)\n", status); - - dma_setup(); - - switch (status) { - case 0x01 ... 0x04: - case 0x06 ... 0x09: - panic("Unimplemented shutdown status: %02x\n", status); - - case 0x05: - // flush keyboard (issue EOI) and jump via 40h:0067h - pic_eoi2(); - // NO BREAK - case 0x0a: -#define BDA_JUMP (((struct bios_data_area_s *)0)->jump) - // resume execution by jump via 40h:0067h - asm volatile( - "movw %w1, %%ds\n" - "ljmpw *%0\n" - : : "m"(BDA_JUMP), "r"(SEG_BDA) - ); - break; - - case 0x0b: - // resume execution via IRET via 40h:0067h - asm volatile( - "movw %w1, %%ds\n" - "lssw %0, %%sp\n" - "iretw\n" - : : "m"(BDA_JUMP), "r"(SEG_BDA) - ); - break; - - case 0x0c: - // resume execution via RETF via 40h:0067h - asm volatile( - "movw %w1, %%ds\n" - "lssw %0, %%sp\n" - "lretw\n" - : : "m"(BDA_JUMP), "r"(SEG_BDA) - ); - break; - - default: - break; - } - - // Not a 16bit resume - do remaining checks in 32bit mode - asm volatile( - "movw %w1, %%ss\n" - "movl %0, %%esp\n" - "movl $_cfunc32flat_handle_resume32, %%edx\n" - "jmp transition32\n" - : : "i"(BUILD_S3RESUME_STACK_ADDR), "r"(0), "a"(status) - ); -} - -// Handle an S3 resume event -static void -s3_resume(void) -{ - if (!CONFIG_S3_RESUME) - return; - - u32 s3_resume_vector = find_resume_vector(); - if (!s3_resume_vector) { - dprintf(1, "No resume vector set!\n"); - return; - } - - pic_setup(); - smm_setup(); - - pci_resume(); - - /* resume TPM before we may measure option roms */ - tpm_s3_resume(); - s3_resume_vga(); - - make_bios_readonly(); - - // Invoke the resume vector. - struct bregs br; - memset(&br, 0, sizeof(br)); - dprintf(1, "Jump to resume vector (%x)\n", s3_resume_vector); - br.code = FLATPTR_TO_SEGOFF((void*)s3_resume_vector); - farcall16big(&br); -} - -u8 HaveAttemptedReboot VARLOW; - -// Attempt to invoke a hard-reboot. -static void -tryReboot(void) -{ - if (HaveAttemptedReboot) { - // Hard reboot has failed - try to shutdown machine. - dprintf(1, "Unable to hard-reboot machine - attempting shutdown.\n"); - apm_shutdown(); - } - HaveAttemptedReboot = 1; - - dprintf(1, "Attempting a hard reboot\n"); - - // Setup for reset on qemu. - qemu_prep_reset(); - - // Reboot using ACPI RESET_REG - acpi_reboot(); - - // Try keyboard controller reboot. - i8042_reboot(); - - // Try PCI 0xcf9 reboot - pci_reboot(); - - // Try triple fault - asm volatile("int3"); - - panic("Could not reboot"); -} - -void VISIBLE32FLAT -handle_resume32(int status) -{ - ASSERT32FLAT(); - dprintf(1, "In 32bit resume\n"); - - if (status == 0xfe) - s3_resume(); - - // Must be a soft reboot - invoke a hard reboot. - tryReboot(); -} |