diff options
Diffstat (limited to 'payloads/external/SeaBIOS/src/post.c')
| -rw-r--r-- | payloads/external/SeaBIOS/src/post.c | 337 |
1 files changed, 0 insertions, 337 deletions
diff --git a/payloads/external/SeaBIOS/src/post.c b/payloads/external/SeaBIOS/src/post.c deleted file mode 100644 index f93106a1..00000000 --- a/payloads/external/SeaBIOS/src/post.c +++ /dev/null @@ -1,337 +0,0 @@ -// 32bit code to Power On Self Test (POST) a machine. -// -// Copyright (C) 2008-2013 Kevin O'Connor <kevin@koconnor.net> -// Copyright (C) 2002 MandrakeSoft S.A. -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "biosvar.h" // SET_BDA -#include "block.h" // block_setup -#include "bregs.h" // struct bregs -#include "config.h" // CONFIG_* -#include "e820map.h" // e820_add -#include "fw/paravirt.h" // qemu_cfg_preinit -#include "fw/xen.h" // xen_preinit -#include "hw/pic.h" // pic_setup -#include "hw/ps2port.h" // ps2port_setup -#include "hw/rtc.h" // rtc_write -#include "hw/serialio.h" // serial_debug_preinit -#include "hw/usb.h" // usb_setup -#include "malloc.h" // malloc_init -#include "memmap.h" // SYMBOL -#include "output.h" // dprintf -#include "string.h" // memset -#include "util.h" // kbd_init -#include "tcgbios.h" // tpm_* - - -/**************************************************************** - * BIOS initialization and hardware setup - ****************************************************************/ - -static void -ivt_init(void) -{ - dprintf(3, "init ivt\n"); - - // Initialize all vectors to the default handler. - int i; - for (i=0; i<256; i++) - SET_IVT(i, FUNC16(entry_iret_official)); - - // Initialize all hw vectors to a default hw handler. - for (i=BIOS_HWIRQ0_VECTOR; i<BIOS_HWIRQ0_VECTOR+8; i++) - SET_IVT(i, FUNC16(entry_hwpic1)); - for (i=BIOS_HWIRQ8_VECTOR; i<BIOS_HWIRQ8_VECTOR+8; i++) - SET_IVT(i, FUNC16(entry_hwpic2)); - - // Initialize software handlers. - SET_IVT(0x02, FUNC16(entry_02)); - SET_IVT(0x05, FUNC16(entry_05)); - SET_IVT(0x10, FUNC16(entry_10)); - SET_IVT(0x11, FUNC16(entry_11)); - SET_IVT(0x12, FUNC16(entry_12)); - SET_IVT(0x13, FUNC16(entry_13_official)); - SET_IVT(0x14, FUNC16(entry_14)); - SET_IVT(0x15, FUNC16(entry_15_official)); - SET_IVT(0x16, FUNC16(entry_16)); - SET_IVT(0x17, FUNC16(entry_17)); - SET_IVT(0x18, FUNC16(entry_18)); - SET_IVT(0x19, FUNC16(entry_19_official)); - SET_IVT(0x1a, FUNC16(entry_1a_official)); - SET_IVT(0x40, FUNC16(entry_40)); - - // INT 60h-66h reserved for user interrupt - for (i=0x60; i<=0x66; i++) - SET_IVT(i, SEGOFF(0, 0)); - - // set vector 0x79 to zero - // this is used by 'gardian angel' protection system - SET_IVT(0x79, SEGOFF(0, 0)); -} - -static void -bda_init(void) -{ - dprintf(3, "init bda\n"); - - struct bios_data_area_s *bda = MAKE_FLATPTR(SEG_BDA, 0); - memset(bda, 0, sizeof(*bda)); - - int esize = EBDA_SIZE_START; - u16 ebda_seg = EBDA_SEGMENT_START; - if (!CONFIG_MALLOC_UPPERMEMORY) - ebda_seg = FLATPTR_TO_SEG(ALIGN_DOWN(SYMBOL(final_varlow_start), 1024) - - EBDA_SIZE_START*1024); - SET_BDA(ebda_seg, ebda_seg); - - SET_BDA(mem_size_kb, ebda_seg / (1024/16)); - - // Init ebda - struct extended_bios_data_area_s *ebda = get_ebda_ptr(); - memset(ebda, 0, sizeof(*ebda)); - ebda->size = esize; - - e820_add((u32)ebda, BUILD_LOWRAM_END-(u32)ebda, E820_RESERVED); - - // Init extra stack - StackPos = &ExtraStack[BUILD_EXTRA_STACK_SIZE] - SYMBOL(zonelow_base); -} - -void -interface_init(void) -{ - // Running at new code address - do code relocation fixups - malloc_init(); - - // Setup romfile items. - qemu_cfg_init(); - coreboot_cbfs_init(); - multiboot_init(); - - // Setup ivt/bda/ebda - ivt_init(); - bda_init(); - - // Other interfaces - boot_init(); - bios32_init(); - pmm_init(); - pnp_init(); - kbd_init(); - mouse_init(); -} - -// Initialize hardware devices -void -device_hardware_setup(void) -{ - usb_setup(); - ps2port_setup(); - block_setup(); - lpt_setup(); - serial_setup(); - cbfs_payload_setup(); -} - -static void -platform_hardware_setup(void) -{ - // Make sure legacy DMA isn't running. - dma_setup(); - - // Init base pc hardware. - pic_setup(); - thread_setup(); - mathcp_setup(); - - // Platform specific setup - qemu_platform_setup(); - coreboot_platform_setup(); - - // Setup timers and periodic clock interrupt - timer_setup(); - clock_setup(); - - // Initialize TPM - tpm_setup(); -} - -void -prepareboot(void) -{ - // Change TPM phys. presence state befor leaving BIOS - tpm_prepboot(); - - // Run BCVs - bcv_prepboot(); - - // Finalize data structures before boot - cdrom_prepboot(); - pmm_prepboot(); - malloc_prepboot(); - e820_prepboot(); - - HaveRunPost = 2; - - // Setup bios checksum. - BiosChecksum -= checksum((u8*)BUILD_BIOS_ADDR, BUILD_BIOS_SIZE); -} - -// Begin the boot process by invoking an int0x19 in 16bit mode. -void VISIBLE32FLAT -startBoot(void) -{ - // Clear low-memory allocations (required by PMM spec). - memset((void*)BUILD_STACK_ADDR, 0, BUILD_EBDA_MINIMUM - BUILD_STACK_ADDR); - - dprintf(3, "Jump to int19\n"); - struct bregs br; - memset(&br, 0, sizeof(br)); - br.flags = F_IF; - call16_int(0x19, &br); -} - -// Main setup code. -static void -maininit(void) -{ - // Initialize internal interfaces. - interface_init(); - - // Setup platform devices. - platform_hardware_setup(); - - // Start hardware initialization (if threads allowed during optionroms) - if (threads_during_optionroms()) - device_hardware_setup(); - - // Run vga option rom - vgarom_setup(); - sercon_setup(); - enable_vga_console(); - - // Do hardware initialization (if running synchronously) - if (!threads_during_optionroms()) { - device_hardware_setup(); - wait_threads(); - } - - // Run option roms - optionrom_setup(); - - // Allow user to modify overall boot order. - interactive_bootmenu(); - wait_threads(); - - // Prepare for boot. - prepareboot(); - - // Write protect bios memory. - make_bios_readonly(); - - // Invoke int 19 to start boot process. - startBoot(); -} - - -/**************************************************************** - * POST entry and code relocation - ****************************************************************/ - -// Update given relocs for the code at 'dest' with a given 'delta' -static void -updateRelocs(void *dest, u32 *rstart, u32 *rend, u32 delta) -{ - u32 *reloc; - for (reloc = rstart; reloc < rend; reloc++) - *((u32*)(dest + *reloc)) += delta; -} - -// Relocate init code and then call a function at its new address. -// The passed function should be in the "init" section and must not -// return. -void __noreturn -reloc_preinit(void *f, void *arg) -{ - void (*func)(void *) __noreturn = f; - if (!CONFIG_RELOCATE_INIT) - func(arg); - - // Allocate space for init code. - u32 initsize = SYMBOL(code32init_end) - SYMBOL(code32init_start); - u32 codealign = SYMBOL(_reloc_min_align); - void *codedest = memalign_tmp(codealign, initsize); - void *codesrc = VSYMBOL(code32init_start); - if (!codedest) - panic("No space for init relocation.\n"); - - // Copy code and update relocs (init absolute, init relative, and runtime) - dprintf(1, "Relocating init from %p to %p (size %d)\n" - , codesrc, codedest, initsize); - s32 delta = codedest - codesrc; - memcpy(codedest, codesrc, initsize); - updateRelocs(codedest, VSYMBOL(_reloc_abs_start), VSYMBOL(_reloc_abs_end) - , delta); - updateRelocs(codedest, VSYMBOL(_reloc_rel_start), VSYMBOL(_reloc_rel_end) - , -delta); - updateRelocs(VSYMBOL(code32flat_start), VSYMBOL(_reloc_init_start) - , VSYMBOL(_reloc_init_end), delta); - if (f >= codesrc && f < VSYMBOL(code32init_end)) - func = f + delta; - - // Call function in relocated code. - barrier(); - func(arg); -} - -// Runs after all code is present and prior to any modifications -void -code_mutable_preinit(void) -{ - if (HaveRunPost) - // Already run - return; - // Setup reset-vector entry point (controls legacy reboots). - rtc_write(CMOS_RESET_CODE, 0); - barrier(); - HaveRunPost = 1; - barrier(); -} - -// Setup for code relocation and then relocate. -void VISIBLE32INIT -dopost(void) -{ - code_mutable_preinit(); - - // Detect ram and setup internal malloc. - qemu_preinit(); - coreboot_preinit(); - malloc_preinit(); - - // Relocate initialization code and call maininit(). - reloc_preinit(maininit, NULL); -} - -// Entry point for Power On Self Test (POST) - the BIOS initilization -// phase. This function makes the memory at 0xc0000-0xfffff -// read/writable and then calls dopost(). -void VISIBLE32FLAT -handle_post(void) -{ - if (!CONFIG_QEMU && !CONFIG_COREBOOT) - return; - - serial_debug_preinit(); - debug_banner(); - - // Check if we are running under Xen. - xen_preinit(); - - // Allow writes to modify bios area (0xf0000) - make_bios_writable(); - - // Now that memory is read/writable - start post process. - dopost(); -} |