From eba0cfa6b0bef4f2e73c8630a7efa3944df8b0f8 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 04:56:35 +0200 Subject: Adding upstream version 1:2.0.27. Signed-off-by: Daniel Baumann --- kexec/arch/ia64/kexec-elf-ia64.c | 303 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 303 insertions(+) create mode 100644 kexec/arch/ia64/kexec-elf-ia64.c (limited to 'kexec/arch/ia64/kexec-elf-ia64.c') diff --git a/kexec/arch/ia64/kexec-elf-ia64.c b/kexec/arch/ia64/kexec-elf-ia64.c new file mode 100644 index 0000000..142dee3 --- /dev/null +++ b/kexec/arch/ia64/kexec-elf-ia64.c @@ -0,0 +1,303 @@ +/* + * kexec: Linux boots Linux + * + * Copyright (C) 2003,2004 Eric Biederman (ebiederm@xmission.com) + * Copyright (C) 2004 Albert Herranz + * Copyright (C) 2004 Silicon Graphics, Inc. + * Jesse Barnes + * Copyright (C) 2004 Khalid Aziz Hewlett Packard Co + * Copyright (C) 2005 Zou Nan hai Intel Corp + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation (version 2 of the License). + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "../../kexec.h" +#include "../../kexec-syscall.h" +#include "../../kexec-elf.h" +#include "kexec-ia64.h" +#include "crashdump-ia64.h" +#include + +static const int probe_debug = 0; +extern unsigned long saved_efi_memmap_size; + +/* + * elf_ia64_probe - sanity check the elf image + * + * Make sure that the file image has a reasonable chance of working. + */ +int elf_ia64_probe(const char *buf, off_t len) +{ + struct mem_ehdr ehdr; + int result; + result = build_elf_exec_info(buf, len, &ehdr, 0); + if (result < 0) { + if (probe_debug) { + fprintf(stderr, "Not an ELF executable\n"); + } + return -1; + } + /* Verify the architecuture specific bits */ + if (ehdr.e_machine != EM_IA_64) { + /* for a different architecture */ + if (probe_debug) { + fprintf(stderr, "Not for this architecture.\n"); + } + return -1; + } + return 0; +} + +void elf_ia64_usage(void) +{ + printf(" --command-line=STRING Set the kernel command line to " + "STRING.\n" + " --append=STRING Set the kernel command line to " + "STRING.\n" + " --initrd=FILE Use FILE as the kernel's initial " + "ramdisk.\n" + " --noio Disable I/O in purgatory code.\n" + " --vmm=FILE Use FILE as the kernel image for a\n" + " virtual machine monitor " + "(aka hypervisor)\n"); +} + +/* Move the crash kerenl physical offset to reserved region + */ +void move_loaded_segments(struct mem_ehdr *ehdr, unsigned long addr) +{ + unsigned i; + long offset = 0; + int found = 0; + struct mem_phdr *phdr; + for(i = 0; i < ehdr->e_phnum; i++) { + phdr = &ehdr->e_phdr[i]; + if (phdr->p_type == PT_LOAD) { + offset = addr - phdr->p_paddr; + found++; + break; + } + } + if (!found) + die("move_loaded_segments: no PT_LOAD region 0x%016x\n", addr); + ehdr->e_entry += offset; + for(i = 0; i < ehdr->e_phnum; i++) { + phdr = &ehdr->e_phdr[i]; + if (phdr->p_type == PT_LOAD) + phdr->p_paddr += offset; + } +} + +int elf_ia64_load(int argc, char **argv, const char *buf, off_t len, + struct kexec_info *info) +{ + struct mem_ehdr ehdr; + const char *command_line, *ramdisk=0, *vmm=0, *kernel_buf; + char *ramdisk_buf = NULL; + off_t ramdisk_size = 0, kernel_size; + unsigned long command_line_len; + unsigned long entry, max_addr, gp_value; + unsigned long command_line_base, ramdisk_base, image_base; + unsigned long efi_memmap_base, efi_memmap_size; + unsigned long boot_param_base; + unsigned long noio=0; + int result; + int opt; + char *efi_memmap_buf, *boot_param; + + /* See options.h -- add any more there, too. */ + static const struct option options[] = { + KEXEC_ARCH_OPTIONS + {"command-line", 1, 0, OPT_APPEND}, + {"append", 1, 0, OPT_APPEND}, + {"initrd", 1, 0, OPT_RAMDISK}, + {"noio", 0, 0, OPT_NOIO}, + {"vmm", 1, 0, OPT_VMM}, + {0, 0, 0, 0}, + }; + + static const char short_options[] = KEXEC_ARCH_OPT_STR ""; + + command_line = 0; + while ((opt = getopt_long(argc, argv, short_options, + options, 0)) != -1) { + switch (opt) { + default: + /* Ignore core options */ + if (opt < OPT_ARCH_MAX) { + break; + } + case OPT_APPEND: + command_line = optarg; + break; + case OPT_RAMDISK: + ramdisk = optarg; + break; + case OPT_NOIO: /* disable PIO and MMIO in purgatory code*/ + noio = 1; + break; + case OPT_VMM: + vmm = optarg; + break; + } + } + command_line_len = 0; + if (command_line) { + command_line_len = strlen(command_line) + 16; + } + + if (vmm) + kernel_buf = slurp_decompress_file(vmm, &kernel_size); + else { + kernel_buf = buf; + kernel_size = len; + } + + /* Parse the Elf file */ + result = build_elf_exec_info(kernel_buf, kernel_size, &ehdr, 0); + if (result < 0) { + fprintf(stderr, "ELF parse failed\n"); + free_elf_info(&ehdr); + return result; + } + + if (info->kexec_flags & KEXEC_ON_CRASH ) { + if ((mem_min == 0x00) && (mem_max == ULONG_MAX)) { + fprintf(stderr, "Failed to find crash kernel region " + "in %s\n", proc_iomem()); + free_elf_info(&ehdr); + return -1; + } + move_loaded_segments(&ehdr, mem_min); + } else if (update_loaded_segments(&ehdr) < 0) { + fprintf(stderr, "Failed to place kernel\n"); + return -1; + } + + entry = ehdr.e_entry; + max_addr = elf_max_addr(&ehdr); + + /* Load the Elf data */ + result = elf_exec_load(&ehdr, info); + if (result < 0) { + fprintf(stderr, "ELF load failed\n"); + free_elf_info(&ehdr); + return result; + } + + + /* Load the setup code */ + elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size, + 0x0, ULONG_MAX, -1, 0); + + + if (load_crashdump_segments(info, &ehdr, max_addr, 0, + &command_line) < 0) + return -1; + + // reverve 4k for ia64_boot_param + boot_param = xmalloc(4096); + boot_param_base = add_buffer(info, boot_param, 4096, 4096, 4096, 0, + max_addr, -1); + + elf_rel_set_symbol(&info->rhdr, "__noio", + &noio, sizeof(long)); + + elf_rel_set_symbol(&info->rhdr, "__boot_param_base", + &boot_param_base, sizeof(long)); + + // reserve efi_memmap of actual size allocated in production kernel + efi_memmap_size = saved_efi_memmap_size; + efi_memmap_buf = xmalloc(efi_memmap_size); + efi_memmap_base = add_buffer(info, efi_memmap_buf, + efi_memmap_size, efi_memmap_size, 4096, 0, + max_addr, -1); + + elf_rel_set_symbol(&info->rhdr, "__efi_memmap_base", + &efi_memmap_base, sizeof(long)); + + elf_rel_set_symbol(&info->rhdr, "__efi_memmap_size", + &efi_memmap_size, sizeof(long)); + if (command_line) { + command_line_len = strlen(command_line) + 1; + } + if (command_line_len || (info->kexec_flags & KEXEC_ON_CRASH )) { + char *cmdline = xmalloc(command_line_len); + strcpy(cmdline, command_line); + + if (info->kexec_flags & KEXEC_ON_CRASH) { + char buf[128]; + sprintf(buf," max_addr=%lluM min_addr=%lluM", + mem_max>>20, mem_min>>20); + command_line_len = strlen(cmdline) + strlen(buf) + 1; + cmdline = xrealloc(cmdline, command_line_len); + strcat(cmdline, buf); + } + + command_line_len = _ALIGN(command_line_len, 16); + command_line_base = add_buffer(info, cmdline, + command_line_len, command_line_len, + getpagesize(), 0UL, + max_addr, -1); + elf_rel_set_symbol(&info->rhdr, "__command_line_len", + &command_line_len, sizeof(long)); + elf_rel_set_symbol(&info->rhdr, "__command_line", + &command_line_base, sizeof(long)); + } + + if (ramdisk) { + ramdisk_buf = slurp_file(ramdisk, &ramdisk_size); + ramdisk_base = add_buffer(info, ramdisk_buf, ramdisk_size, + ramdisk_size, + getpagesize(), 0, max_addr, -1); + elf_rel_set_symbol(&info->rhdr, "__ramdisk_base", + &ramdisk_base, sizeof(long)); + elf_rel_set_symbol(&info->rhdr, "__ramdisk_size", + &ramdisk_size, sizeof(long)); + } + + if (vmm) { + image_base = add_buffer(info, buf, len, len, + getpagesize(), 0, max_addr, -1); + elf_rel_set_symbol(&info->rhdr, "__vmcode_base", + &image_base, sizeof(long)); + elf_rel_set_symbol(&info->rhdr, "__vmcode_size", + &len, sizeof(long)); + } + + gp_value = info->rhdr.rel_addr + 0x200000; + elf_rel_set_symbol(&info->rhdr, "__gp_value", &gp_value, + sizeof(gp_value)); + + elf_rel_set_symbol(&info->rhdr, "__kernel_entry", &entry, + sizeof(entry)); + free_elf_info(&ehdr); + return 0; +} -- cgit v1.2.3