Adding upstream version 1:2.0.27.upstream/1%2.0.27upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 303 insertions, 0 deletions

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 <jbarnes@sgi.com>
+ * Copyright (C) 2004 Khalid Aziz <khalid.aziz@hp.com> Hewlett Packard Co
+ * Copyright (C) 2005 Zou Nan hai <nanhai.zou@intel.com> 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 <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <limits.h>
+#include <elf.h>
+#include <boot/elf_boot.h>
+#include <ip_checksum.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "../../kexec-elf.h"
+#include "kexec-ia64.h"
+#include "crashdump-ia64.h"
+#include <arch/options.h>
+
+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;
+}