/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _SYS_FASTBOOT_H #define _SYS_FASTBOOT_H /* * Platform dependent instruction sequences for fast reboot */ #ifdef __cplusplus extern "C" { #endif #ifndef _ASM #include <sys/types.h> #include <sys/mach_mmu.h> #include <sys/md5.h> #endif /* _ASM */ #define FASTBOOT_NAME_UNIX 0 #define FASTBOOT_NAME_BOOTARCHIVE 1 #define FASTBOOT_MAX_FILES_MAP 2 /* max number of files that needs mapping */ #define FASTBOOT_MAX_FILES_TOTAL 3 /* max number of files */ #define FASTBOOT_MAX_MD5_HASH (FASTBOOT_MAX_FILES_MAP + 1) #define FASTBOOT_SWTCH_PA 0x5000 /* low memory */ #define FASTBOOT_STACK_OFFSET 0xe00 /* where the stack starts */ #define FASTBOOT_MAGIC ('F' << 24 | 'A' << 16 | 'S' << 8 | 'T') #define FASTBOOT_UNIX 0 #define FASTBOOT_BOOTARCHIVE 1 #define FASTBOOT_SWTCH 2 /* * Default sizes for varies information we have to save across boot for * fast reboot. If the actual size is bigger than what we saved, abort * fast reboot. */ #define FASTBOOT_SAVED_MMAP_COUNT 32 #define FASTBOOT_SAVED_DRIVES_MAX 8 #define FASTBOOT_SAVED_DRIVES_PORT_MAX 128 #define FASTBOOT_SAVED_DRIVES_SIZE \ ((offsetof(struct mb_drive_info, drive_ports) + \ FASTBOOT_SAVED_DRIVES_PORT_MAX * sizeof (uint16_t)) * \ FASTBOOT_SAVED_DRIVES_MAX) #define FASTBOOT_SAVED_CMDLINE_LEN MMU_PAGESIZE /* * dboot entry address comes from * usr/src/uts/i86pc/conf/Mapfile and Mapfile.64. */ #define DBOOT_ENTRY_ADDRESS 0xc00000 /* * Fake starting virtual address for creating mapping for the new kernel * and boot_archive. */ #define FASTBOOT_FAKE_VA (2ULL << 30) #define FASTBOOT_TERMINATE 0xdeadbee0 /* Terminating PTEs */ #ifndef _ASM #define MAX_ELF32_LOAD_SECTIONS 3 /* * Data structure for specifying each section in a 32-bit ELF file. */ typedef struct fastboot_section { uint32_t fb_sec_offset; /* offset */ uint32_t fb_sec_paddr; /* physical address */ uint32_t fb_sec_size; /* size */ uint32_t fb_sec_bss_size; /* section bss size */ } fastboot_section_t; /* * Data structure for describing each file that needs to be relocated from high * memory to low memory for fast reboot. Currently these files are unix, the * boot_archive, and the relocation function itself. */ typedef struct _fastboot_file { uintptr_t fb_va; /* virtual address */ x86pte_t *fb_pte_list_va; /* VA for PTE list */ paddr_t fb_pte_list_pa; /* PA for PTE list */ size_t fb_pte_list_size; /* size of PTE list */ uintptr_t fb_dest_pa; /* destination PA */ size_t fb_size; /* file size */ uintptr_t fb_next_pa; fastboot_section_t fb_sections[MAX_ELF32_LOAD_SECTIONS]; int fb_sectcnt; /* actual number of sections */ } fastboot_file_t; /* * Data structure containing all the information the switching routine needs * for fast rebooting to the new kernel. * * NOTE: There is limited stack space (0x200 bytes) in the switcher to * copy in the data structure. Fields that are not absolutely necessary for * the switcher should be added after the fi_valid field. */ typedef struct _fastboot_info { uint32_t fi_magic; /* magic for fast reboot */ fastboot_file_t fi_files[FASTBOOT_MAX_FILES_TOTAL]; int fi_has_pae; uintptr_t fi_pagetable_va; paddr_t fi_pagetable_pa; paddr_t fi_last_table_pa; paddr_t fi_new_mbi_pa; /* new multiboot info PA */ int fi_valid; /* is the new kernel valid */ uintptr_t fi_next_table_va; paddr_t fi_next_table_pa; uint_t *fi_shift_amt; uint_t fi_ptes_per_table; uint_t fi_lpagesize; int fi_top_level; /* top level of page tables */ size_t fi_pagetable_size; /* size allocated for pt */ uintptr_t fi_new_mbi_va; /* new multiboot info VA */ size_t fi_mbi_size; /* size allocated for mbi */ uchar_t fi_md5_hash[FASTBOOT_MAX_MD5_HASH][MD5_DIGEST_LENGTH]; } fastboot_info_t; /* * Fast reboot core functions */ extern void fast_reboot(); /* Entry point for fb_switch */ extern void fastboot_load_kernel(char *); /* Load a new kernel */ extern int fastboot_cksum_verify(fastboot_info_t *); /* * Additional messages explaining why Fast Reboot is not * supported. */ extern const char *fastreboot_nosup_message(void); /* * Fast reboot tunables */ /* If set, the system is capable of fast reboot */ extern int volatile fastreboot_capable; /* * If set, force fast reboot even if the system has * drivers without quiesce(9E) implementation. */ extern int force_fastreboot; /* If set, fast reboot after panic. */ extern volatile int fastreboot_onpanic; extern char fastreboot_onpanic_cmdline[FASTBOOT_SAVED_CMDLINE_LEN]; /* Variables for avoiding panic/reboot loop */ extern clock_t fastreboot_onpanic_uptime; extern clock_t lbolt_at_boot, panic_lbolt; #endif /* _ASM */ #ifdef __cplusplus } #endif #endif /* _SYS_FASTBOOT_H */
