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, 247 insertions, 0 deletions

diff --git a/kexec/arch/ia64/kexec-ia64.c b/kexec/arch/ia64/kexec-ia64.c
new file mode 100644
index 0000000..418d997
--- /dev/null
+++ b/kexec/arch/ia64/kexec-ia64.c
@@ -0,0 +1,247 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005  Eric Biederman (ebiederm@xmission.com)
+ * Copyright (C) 2004 Albert Herranz
+ * Copyright (C) 2004 Silicon Graphics, Inc.
+ *   Jesse Barnes <jbarnes@sgi.com>
+ *
+ * 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 <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <sched.h>
+#include <limits.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "elf.h"
+#include "kexec-ia64.h"
+#include <arch/options.h>
+
+/* The number of entries in memory_range array is always smaller than
+ * the number of entries in the file returned by proc_iomem(),
+ * stored in max_memory_ranges. */
+static struct memory_range *memory_range;
+int max_memory_ranges;
+static int memory_ranges;
+unsigned long saved_efi_memmap_size;
+
+/* Reserve range for EFI memmap and Boot parameter */
+static int split_range(int range, unsigned long start, unsigned long end)
+{
+	unsigned long ram_end = memory_range[range - 1].end;
+	unsigned int type = memory_range[range - 1].type;
+	int i;
+	//align end and start to page size of EFI
+	start = _ALIGN_DOWN(start, 1UL<<12);
+	end = _ALIGN(end, 1UL<<12);
+	for (i = 0; i < range; i++)
+		if(memory_range[i].start <= start && memory_range[i].end >=end)
+			break;
+	if (i >= range)
+		return range;
+	range = i;
+	if (memory_range[range].start < start) {
+		memory_range[range].end = start;
+		range++;
+	}
+	memory_range[range].start = start;
+	memory_range[range].end = end;
+	memory_range[range].type = RANGE_RESERVED;
+	range++;
+	if (end < ram_end) {
+		memory_range[range].start = end;
+		memory_range[range].end = ram_end;
+		memory_range[range].type = type;
+		range++;
+	}
+	return range;
+}
+
+/* Return a sorted list of available memory ranges. */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+				unsigned long kexec_flags)
+{
+	const char *iomem = proc_iomem();
+	char line[MAX_LINE];
+	FILE *fp;
+	fp = fopen(iomem, "r");
+	if (!fp) {
+		fprintf(stderr, "Cannot open %s: %s\n",
+			iomem, strerror(errno));
+		return -1;
+	}
+
+	/* allocate memory_range dynamically */
+	max_memory_ranges = 0;
+	while(fgets(line, sizeof(line), fp) != 0) {
+		max_memory_ranges++;
+	}
+	memory_range = xmalloc(sizeof(struct memory_range) *
+			max_memory_ranges);
+	rewind(fp);
+
+	while(fgets(line, sizeof(line), fp) != 0) {
+		unsigned long start, end;
+		char *str;
+		unsigned type;
+		int consumed;
+		int count;
+		if (memory_ranges >= max_memory_ranges)
+			break;
+		count = sscanf(line, "%lx-%lx : %n",
+				&start, &end, &consumed);
+		if (count != 2)
+			continue;
+		str = line + consumed;
+		end = end + 1;
+		if (memcmp(str, "System RAM\n", 11) == 0) {
+			type = RANGE_RAM;
+		}
+		else if (memcmp(str, "reserved\n", 9) == 0) {
+			type = RANGE_RESERVED;
+		}
+		else if (memcmp(str, "Crash kernel\n", 13) == 0) {
+			/* Redefine the memory region boundaries if kernel
+			 * exports the limits and if it is panic kernel.
+			 * Override user values only if kernel exported
+			 * values are subset of user defined values.
+			 */
+
+			if (kexec_flags & KEXEC_ON_CRASH) {
+				if (start > mem_min)
+					mem_min = start;
+				if (end < mem_max)
+					mem_max = end;
+			}
+			continue;
+		} else if (memcmp(str, "Boot parameter\n", 14) == 0) {
+			memory_ranges = split_range(memory_ranges, start, end);
+			continue;
+		} else if (memcmp(str, "EFI Memory Map\n", 14) == 0) {
+			memory_ranges = split_range(memory_ranges, start, end);
+			saved_efi_memmap_size = end - start;
+			continue;
+		} else if (memcmp(str, "Uncached RAM\n", 13) == 0) {
+			type = RANGE_UNCACHED;
+		} else {
+			continue;
+		}
+		/*
+		 * Check if this memory range can be coalesced with
+		 * the previous range
+		 */
+		if ((memory_ranges > 0) &&
+			(start == memory_range[memory_ranges-1].end) &&
+			(type == memory_range[memory_ranges-1].type)) {
+			memory_range[memory_ranges-1].end = end;
+		}
+		else {
+			memory_range[memory_ranges].start = start;
+			memory_range[memory_ranges].end = end;
+			memory_range[memory_ranges].type = type;
+			memory_ranges++;
+		}
+	}
+	fclose(fp);
+ 	*range = memory_range;
+ 	*ranges = memory_ranges;
+
+ 	return 0;
+}
+
+/* Supported file types and callbacks */
+struct file_type file_type[] = {
+       {"elf-ia64", elf_ia64_probe, elf_ia64_load, elf_ia64_usage},
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+
+void arch_usage(void)
+{
+}
+
+int arch_process_options(int argc, char **argv)
+{
+	/* This doesn't belong here!  Some sort of arch_init() ? */
+
+	/* execute from monarch processor */
+	cpu_set_t affinity;
+	CPU_ZERO(&affinity);
+	CPU_SET(0, &affinity);
+	sched_setaffinity(0, sizeof(affinity), &affinity);
+
+	return 0;
+}
+
+const struct arch_map_entry arches[] = {
+	{ "ia64", KEXEC_ARCH_IA_64 },
+	{ NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+	return 0;
+}
+
+int update_loaded_segments(struct mem_ehdr *ehdr)
+{
+	int i;
+	unsigned u;
+	struct mem_phdr *phdr;
+	unsigned long start_addr = ULONG_MAX, end_addr = 0;
+	unsigned long align = 1UL<<26; /* 64M */
+	unsigned long start, end;
+
+	for (u = 0; u < ehdr->e_phnum; u++) {
+		phdr = &ehdr->e_phdr[u];
+		if (phdr->p_type != PT_LOAD)
+			continue;
+		if (phdr->p_paddr < start_addr)
+			start_addr = phdr->p_paddr;
+		if ((phdr->p_paddr + phdr->p_memsz) > end_addr)
+			end_addr = phdr->p_paddr + phdr->p_memsz;
+	}
+
+	for (i = 0; i < memory_ranges && memory_range[i].start <= start_addr;
+	     i++) {
+		if (memory_range[i].type == RANGE_RAM &&
+		    memory_range[i].end > end_addr)
+			return 0;
+	}
+
+	for (i = 0; i < memory_ranges; i++) {
+		if (memory_range[i].type != RANGE_RAM)
+			continue;
+		start = _ALIGN(memory_range[i].start, align);
+		end = memory_range[i].end;
+		if (end > start && (end - start) > (end_addr - start_addr)) {
+		    move_loaded_segments(ehdr, start);
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
+