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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 02:56:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 02:56:35 +0000
commiteba0cfa6b0bef4f2e73c8630a7efa3944df8b0f8 (patch)
tree74c37eede1f0634cc5de1c63c934edaa1630c6bc /kexec/arch/ia64/kexec-ia64.c
parentInitial commit. (diff)
downloadkexec-tools-eba0cfa6b0bef4f2e73c8630a7efa3944df8b0f8.tar.xz
kexec-tools-eba0cfa6b0bef4f2e73c8630a7efa3944df8b0f8.zip
Adding upstream version 1:2.0.27.upstream/1%2.0.27upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'kexec/arch/ia64/kexec-ia64.c')
-rw-r--r--kexec/arch/ia64/kexec-ia64.c247
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
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--- /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))
+{
+}
+