summaryrefslogtreecommitdiffstats
path: root/kexec/arch/ppc64
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--kexec/arch/ppc64/Makefile26
-rw-r--r--kexec/arch/ppc64/crashdump-ppc64.c644
-rw-r--r--kexec/arch/ppc64/crashdump-ppc64.h51
-rw-r--r--kexec/arch/ppc64/fdt.c78
-rw-r--r--kexec/arch/ppc64/include/arch/fdt.h8
-rw-r--r--kexec/arch/ppc64/include/arch/options.h51
-rw-r--r--kexec/arch/ppc64/kexec-elf-ppc64.c496
-rw-r--r--kexec/arch/ppc64/kexec-elf-rel-ppc64.c204
-rw-r--r--kexec/arch/ppc64/kexec-ppc64.c969
-rw-r--r--kexec/arch/ppc64/kexec-ppc64.h45
-rw-r--r--kexec/arch/ppc64/kexec-zImage-ppc64.c184
11 files changed, 2756 insertions, 0 deletions
diff --git a/kexec/arch/ppc64/Makefile b/kexec/arch/ppc64/Makefile
new file mode 100644
index 0000000..9caf501
--- /dev/null
+++ b/kexec/arch/ppc64/Makefile
@@ -0,0 +1,26 @@
+#
+# kexec ppc64 (linux booting linux)
+#
+include $(srcdir)/kexec/libfdt/Makefile.libfdt
+
+ppc64_KEXEC_SRCS = kexec/arch/ppc64/kexec-elf-rel-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/kexec-zImage-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/kexec-elf-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/kexec-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/crashdump-ppc64.c
+ppc64_KEXEC_SRCS += kexec/arch/ppc64/fdt.c
+ppc64_KEXEC_SRCS += $(LIBFDT_SRCS:%=kexec/libfdt/%)
+
+ppc64_ARCH_REUSE_INITRD =
+
+ppc64_FS2DT = kexec/fs2dt.c
+ppc64_FS2DT_INCLUDE = -include $(srcdir)/kexec/arch/ppc64/crashdump-ppc64.h \
+ -include $(srcdir)/kexec/arch/ppc64/kexec-ppc64.h
+
+ppc64_CPPFLAGS = -I$(srcdir)/kexec/libfdt
+
+dist += kexec/arch/ppc64/Makefile $(ppc64_KEXEC_SRCS) \
+ kexec/arch/ppc64/kexec-ppc64.h kexec/arch/ppc64/crashdump-ppc64.h \
+ kexec/arch/ppc64/include/arch/fdt.h \
+ kexec/arch/ppc64/include/arch/options.h
+
diff --git a/kexec/arch/ppc64/crashdump-ppc64.c b/kexec/arch/ppc64/crashdump-ppc64.c
new file mode 100644
index 0000000..6d47898
--- /dev/null
+++ b/kexec/arch/ppc64/crashdump-ppc64.c
@@ -0,0 +1,644 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Created by: R Sharada (sharada@in.ibm.com)
+ * Copyright (C) IBM Corporation, 2005. All rights reserved
+ *
+ * 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.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+#include <elf.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "../../crashdump.h"
+#include "kexec-ppc64.h"
+#include "../../fs2dt.h"
+#include "crashdump-ppc64.h"
+
+#define DEVTREE_CRASHKERNEL_BASE "/proc/device-tree/chosen/linux,crashkernel-base"
+#define DEVTREE_CRASHKERNEL_SIZE "/proc/device-tree/chosen/linux,crashkernel-size"
+
+unsigned int num_of_lmb_sets;
+unsigned int is_dyn_mem_v2;
+uint64_t lmb_size;
+
+static struct crash_elf_info elf_info64 =
+{
+ class: ELFCLASS64,
+#if BYTE_ORDER == LITTLE_ENDIAN
+ data: ELFDATA2LSB,
+#else
+ data: ELFDATA2MSB,
+#endif
+ machine: EM_PPC64,
+ page_offset: PAGE_OFFSET,
+ lowmem_limit: MAXMEM,
+};
+
+static struct crash_elf_info elf_info32 =
+{
+ class: ELFCLASS32,
+ data: ELFDATA2MSB,
+ machine: EM_PPC64,
+ page_offset: PAGE_OFFSET,
+ lowmem_limit: MAXMEM,
+};
+
+extern struct arch_options_t arch_options;
+
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region
+ */
+static struct memory_range *crash_memory_range = NULL;
+
+/* Define a variable to replace the CRASH_MAX_MEMORY_RANGES macro */
+static int crash_max_memory_ranges;
+
+/*
+ * Used to save various memory ranges/regions needed for the captured
+ * kernel to boot. (lime memmap= option in other archs)
+ */
+mem_rgns_t usablemem_rgns = {0, NULL};
+
+static unsigned long long cstart, cend;
+static int memory_ranges;
+
+/*
+ * Exclude the region that lies within crashkernel and above the memory
+ * limit which is reflected by mem= kernel option.
+ */
+static void exclude_crash_region(uint64_t start, uint64_t end)
+{
+ /* If memory_limit is set then exclude the memory region above it. */
+ if (memory_limit) {
+ if (start >= memory_limit)
+ return;
+ if (end > memory_limit)
+ end = memory_limit;
+ }
+
+ if (cstart < end && cend > start) {
+ if (start < cstart && end > cend) {
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = cstart;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ crash_memory_range[memory_ranges].start = cend;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ } else if (start < cstart) {
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = cstart;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ } else if (end > cend) {
+ crash_memory_range[memory_ranges].start = cend;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ }
+ } else {
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = RANGE_RAM;
+ memory_ranges++;
+ }
+}
+
+static int get_dyn_reconf_crash_memory_ranges(void)
+{
+ uint64_t start, end;
+ uint64_t startrange, endrange;
+ uint64_t size;
+ char fname[128], buf[32];
+ FILE *file;
+ unsigned int i;
+ int n;
+ uint32_t flags;
+
+ strcpy(fname, "/proc/device-tree/");
+ strcat(fname, "ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory");
+ if (is_dyn_mem_v2)
+ strcat(fname, "-v2");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ return -1;
+ }
+
+ fseek(file, 4, SEEK_SET);
+ startrange = endrange = 0;
+ size = lmb_size;
+ for (i = 0; i < num_of_lmb_sets; i++) {
+ if ((n = fread(buf, 1, LMB_ENTRY_SIZE, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ if (memory_ranges >= (max_memory_ranges + 1)) {
+ /* No space to insert another element. */
+ fprintf(stderr,
+ "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ fclose(file);
+ return -1;
+ }
+
+ /*
+ * If the property is ibm,dynamic-memory-v2, the first 4 bytes
+ * tell the number of sequential LMBs in this entry.
+ */
+ if (is_dyn_mem_v2)
+ size = be32_to_cpu(((unsigned int *)buf)[0]) * lmb_size;
+
+ start = be64_to_cpu(*((uint64_t *)&buf[DRCONF_ADDR]));
+ end = start + size;
+ if (start == 0 && end >= (BACKUP_SRC_END + 1))
+ start = BACKUP_SRC_END + 1;
+
+ flags = be32_to_cpu((*((uint32_t *)&buf[DRCONF_FLAGS])));
+ /* skip this block if the reserved bit is set in flags (0x80)
+ or if the block is not assigned to this partition (0x8) */
+ if ((flags & 0x80) || !(flags & 0x8))
+ continue;
+
+ if (start != endrange) {
+ if (startrange != endrange)
+ exclude_crash_region(startrange, endrange);
+ startrange = start;
+ }
+ endrange = end;
+ }
+ if (startrange != endrange)
+ exclude_crash_region(startrange, endrange);
+
+ fclose(file);
+ return 0;
+}
+
+/*
+ * For a given memory node, check if it is mapped to system RAM or
+ * to onboard memory on accelerator device like GPU card or such.
+ */
+static int is_coherent_device_mem(const char *fname)
+{
+ char fpath[PATH_LEN];
+ char buf[32];
+ DIR *dmem;
+ FILE *file;
+ struct dirent *mentry;
+ int cnt, ret = 0;
+
+ strcpy(fpath, fname);
+ if ((dmem = opendir(fpath)) == NULL) {
+ perror(fpath);
+ return -1;
+ }
+
+ while ((mentry = readdir(dmem)) != NULL) {
+ if (strcmp(mentry->d_name, "compatible"))
+ continue;
+
+ strcat(fpath, "/compatible");
+ if ((file = fopen(fpath, "r")) == NULL) {
+ perror(fpath);
+ ret = -1;
+ break;
+ }
+ if ((cnt = fread(buf, 1, 32, file)) < 0) {
+ perror(fpath);
+ fclose(file);
+ ret = -1;
+ break;
+ }
+ if (!strncmp(buf, "ibm,coherent-device-memory", 26)) {
+ fclose(file);
+ ret = 1;
+ break;
+ }
+ fclose(file);
+ }
+
+ closedir(dmem);
+ return ret;
+}
+
+
+/* Reads the appropriate file and retrieves the SYSTEM RAM regions for whom to
+ * create Elf headers. Keeping it separate from get_memory_ranges() as
+ * requirements are different in the case of normal kexec and crashdumps.
+ *
+ * Normal kexec needs to look at all of available physical memory irrespective
+ * of the fact how much of it is being used by currently running kernel.
+ * Crashdumps need to have access to memory regions actually being used by
+ * running kernel. Expecting a different file/data structure than /proc/iomem
+ * to look into down the line. May be something like /proc/kernelmem or may
+ * be zone data structures exported from kernel.
+ */
+static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
+{
+
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[PATH_LEN];
+ char buf[MAXBYTES];
+ DIR *dir, *dmem;
+ FILE *file;
+ struct dirent *dentry, *mentry;
+ int n, ret, crash_rng_len = 0;
+ unsigned long long start, end;
+ int page_size;
+
+ crash_max_memory_ranges = max_memory_ranges + 6;
+ crash_rng_len = sizeof(struct memory_range) * crash_max_memory_ranges;
+
+ crash_memory_range = (struct memory_range *) malloc(crash_rng_len);
+ if (!crash_memory_range) {
+ fprintf(stderr, "Allocation for crash memory range failed\n");
+ return -1;
+ }
+ memset(crash_memory_range, 0, crash_rng_len);
+
+ /* create a separate program header for the backup region */
+ crash_memory_range[0].start = BACKUP_SRC_START;
+ crash_memory_range[0].end = BACKUP_SRC_END + 1;
+ crash_memory_range[0].type = RANGE_RAM;
+ memory_ranges++;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ goto err;
+ }
+
+ cstart = crash_base;
+ cend = crash_base + crash_size;
+
+ while ((dentry = readdir(dir)) != NULL) {
+ if (!strncmp(dentry->d_name,
+ "ibm,dynamic-reconfiguration-memory", 35)){
+ get_dyn_reconf_crash_memory_ranges();
+ continue;
+ }
+ if (strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory"))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+
+ ret = is_coherent_device_mem(fname);
+ if (ret == -1) {
+ closedir(dir);
+ goto err;
+ } else if (ret == 1) {
+ /*
+ * Avoid adding this memory region as it is not
+ * mapped to system RAM.
+ */
+ continue;
+ }
+
+ if ((dmem = opendir(fname)) == NULL) {
+ perror(fname);
+ closedir(dir);
+ goto err;
+ }
+ while ((mentry = readdir(dmem)) != NULL) {
+ if (strcmp(mentry->d_name, "reg"))
+ continue;
+ strcat(fname, "/reg");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ closedir(dmem);
+ closedir(dir);
+ goto err;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ closedir(dmem);
+ closedir(dir);
+ goto err;
+ }
+ if (memory_ranges >= (max_memory_ranges + 1)) {
+ /* No space to insert another element. */
+ fprintf(stderr,
+ "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ goto err;
+ }
+
+ start = be64_to_cpu(((unsigned long long *)buf)[0]);
+ end = start +
+ be64_to_cpu(((unsigned long long *)buf)[1]);
+ if (start == 0 && end >= (BACKUP_SRC_END + 1))
+ start = BACKUP_SRC_END + 1;
+
+ exclude_crash_region(start, end);
+ fclose(file);
+ }
+ closedir(dmem);
+ }
+ closedir(dir);
+
+ /*
+ * If RTAS region is overlapped with crashkernel, need to create ELF
+ * Program header for the overlapped memory.
+ */
+ if (crash_base < rtas_base + rtas_size &&
+ rtas_base < crash_base + crash_size) {
+ page_size = getpagesize();
+ cstart = rtas_base;
+ cend = rtas_base + rtas_size;
+ if (cstart < crash_base)
+ cstart = crash_base;
+ if (cend > crash_base + crash_size)
+ cend = crash_base + crash_size;
+ /*
+ * The rtas section created here is formed by reading rtas-base
+ * and rtas-size from /proc/device-tree/rtas. Unfortunately
+ * rtas-size is not required to be a multiple of PAGE_SIZE
+ * The remainder of the page it ends on is just garbage, and is
+ * safe to read, its just not accounted in rtas-size. Since
+ * we're creating an elf section here though, lets round it up
+ * to the next page size boundary though, so makedumpfile can
+ * read it safely without going south on us.
+ */
+ cend = _ALIGN(cend, page_size);
+
+ crash_memory_range[memory_ranges].start = cstart;
+ crash_memory_range[memory_ranges++].end = cend;
+ }
+
+ /*
+ * If OPAL region is overlapped with crashkernel, need to create ELF
+ * Program header for the overlapped memory.
+ */
+ if (crash_base < opal_base + opal_size &&
+ opal_base < crash_base + crash_size) {
+ page_size = getpagesize();
+ cstart = opal_base;
+ cend = opal_base + opal_size;
+ if (cstart < crash_base)
+ cstart = crash_base;
+ if (cend > crash_base + crash_size)
+ cend = crash_base + crash_size;
+ /*
+ * The opal section created here is formed by reading opal-base
+ * and opal-size from /proc/device-tree/ibm,opal. Unfortunately
+ * opal-size is not required to be a multiple of PAGE_SIZE
+ * The remainder of the page it ends on is just garbage, and is
+ * safe to read, its just not accounted in opal-size. Since
+ * we're creating an elf section here though, lets round it up
+ * to the next page size boundary though, so makedumpfile can
+ * read it safely without going south on us.
+ */
+ cend = _ALIGN(cend, page_size);
+
+ crash_memory_range[memory_ranges].start = cstart;
+ crash_memory_range[memory_ranges++].end = cend;
+ }
+ *range = crash_memory_range;
+ *ranges = memory_ranges;
+
+ int j;
+ dbgprintf("CRASH MEMORY RANGES\n");
+ for(j = 0; j < *ranges; j++) {
+ start = crash_memory_range[j].start;
+ end = crash_memory_range[j].end;
+ dbgprintf("%016Lx-%016Lx\n", start, end);
+ }
+
+ return 0;
+
+err:
+ if (crash_memory_range)
+ free(crash_memory_range);
+ return -1;
+}
+
+static int add_cmdline_param(char *cmdline, uint64_t addr, char *cmdstr,
+ char *byte)
+{
+ int cmdline_size, cmdlen, len, align = 1024;
+ char str[COMMAND_LINE_SIZE], *ptr;
+
+ /* Passing in =xxxK / =xxxM format. Saves space required in cmdline.*/
+ switch (byte[0]) {
+ case 'K':
+ if (addr%align)
+ return -1;
+ addr = addr/align;
+ break;
+ case 'M':
+ addr = addr/(align *align);
+ break;
+ }
+ ptr = str;
+ strcpy(str, cmdstr);
+ ptr += strlen(str);
+ ultoa(addr, ptr);
+ strcat(str, byte);
+ len = strlen(str);
+ cmdlen = strlen(cmdline) + len;
+ cmdline_size = COMMAND_LINE_SIZE;
+ if (cmdlen > (cmdline_size - 1))
+ die("Command line overflow\n");
+ strcat(cmdline, str);
+ dbgprintf("Command line after adding elfcorehdr: %s\n", cmdline);
+ return 0;
+}
+
+/* Loads additional segments in case of a panic kernel is being loaded.
+ * One segment for backup region, another segment for storing elf headers
+ * for crash memory image.
+ */
+int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline,
+ uint64_t max_addr, unsigned long min_base)
+{
+ void *tmp;
+ unsigned long sz;
+ uint64_t elfcorehdr;
+ int nr_ranges, align = 1024, i;
+ unsigned long long end;
+ struct memory_range *mem_range;
+
+ if (get_crash_memory_ranges(&mem_range, &nr_ranges) < 0)
+ return -1;
+
+ info->backup_src_start = BACKUP_SRC_START;
+ info->backup_src_size = BACKUP_SRC_SIZE;
+ /* Create a backup region segment to store backup data*/
+ sz = _ALIGN(BACKUP_SRC_SIZE, align);
+ tmp = xmalloc(sz);
+ memset(tmp, 0, sz);
+ info->backup_start = add_buffer(info, tmp, sz, sz, align,
+ 0, max_addr, 1);
+ reserve(info->backup_start, sz);
+
+ /* On ppc64 memory ranges in device-tree is denoted as start
+ * and size rather than start and end, as is the case with
+ * other architectures like i386 . Because of this when loading
+ * the memory ranges in crashdump-elf.c the filesz calculation
+ * [ end - start + 1 ] goes for a toss.
+ *
+ * To be in sync with other archs adjust the end value for
+ * every crash memory range before calling the generic function
+ */
+
+ for (i = 0; i < nr_ranges; i++) {
+ end = crash_memory_range[i].end - 1;
+ crash_memory_range[i].end = end;
+ }
+
+
+ /* Create elf header segment and store crash image data. */
+ if (arch_options.core_header_type == CORE_TYPE_ELF64) {
+ if (crash_create_elf64_headers(info, &elf_info64,
+ crash_memory_range, nr_ranges,
+ &tmp, &sz,
+ ELF_CORE_HEADER_ALIGN) < 0) {
+ free (tmp);
+ return -1;
+ }
+ }
+ else {
+ if (crash_create_elf32_headers(info, &elf_info32,
+ crash_memory_range, nr_ranges,
+ &tmp, &sz,
+ ELF_CORE_HEADER_ALIGN) < 0) {
+ free(tmp);
+ return -1;
+ }
+ }
+
+ elfcorehdr = add_buffer(info, tmp, sz, sz, align, min_base,
+ max_addr, 1);
+ reserve(elfcorehdr, sz);
+ /* modify and store the cmdline in a global array. This is later
+ * read by flatten_device_tree and modified if required
+ */
+ add_cmdline_param(mod_cmdline, elfcorehdr, " elfcorehdr=", "K");
+ return 0;
+}
+
+/*
+ * Used to save various memory regions needed for the captured kernel.
+ */
+
+void add_usable_mem_rgns(unsigned long long base, unsigned long long size)
+{
+ unsigned int i;
+ unsigned long long end = base + size;
+ unsigned long long ustart, uend;
+
+ base = _ALIGN_DOWN(base, getpagesize());
+ end = _ALIGN_UP(end, getpagesize());
+
+ for (i=0; i < usablemem_rgns.size; i++) {
+ ustart = usablemem_rgns.ranges[i].start;
+ uend = usablemem_rgns.ranges[i].end;
+ if (base < uend && end > ustart) {
+ if ((base >= ustart) && (end <= uend))
+ return;
+ if (base < ustart && end > uend) {
+ usablemem_rgns.ranges[i].start = base;
+ usablemem_rgns.ranges[i].end = end;
+#ifdef DEBUG
+ fprintf(stderr, "usable memory rgn %u: new base:%llx new size:%llx\n",
+ i, base, size);
+#endif
+ return;
+ } else if (base < ustart) {
+ usablemem_rgns.ranges[i].start = base;
+#ifdef DEBUG
+ fprintf(stderr, "usable memory rgn %u: new base:%llx new size:%llx",
+ i, base, usablemem_rgns.ranges[i].end - base);
+#endif
+ return;
+ } else if (end > uend){
+ usablemem_rgns.ranges[i].end = end;
+#ifdef DEBUG
+ fprintf(stderr, "usable memory rgn %u: new end:%llx, new size:%llx",
+ i, end, end - usablemem_rgns.ranges[i].start);
+#endif
+ return;
+ }
+ }
+ }
+ usablemem_rgns.ranges[usablemem_rgns.size].start = base;
+ usablemem_rgns.ranges[usablemem_rgns.size++].end = end;
+
+ dbgprintf("usable memory rgns size:%u base:%llx size:%llx\n",
+ usablemem_rgns.size, base, size);
+}
+
+int get_crash_kernel_load_range(uint64_t *start, uint64_t *end)
+{
+ unsigned long long value;
+
+ if (!get_devtree_value(DEVTREE_CRASHKERNEL_BASE, &value))
+ *start = be64_to_cpu(value);
+ else
+ return -1;
+
+ if (!get_devtree_value(DEVTREE_CRASHKERNEL_SIZE, &value))
+ *end = *start + be64_to_cpu(value) - 1;
+ else
+ return -1;
+
+ return 0;
+}
+
+int is_crashkernel_mem_reserved(void)
+{
+ int fd;
+
+ fd = open(DEVTREE_CRASHKERNEL_BASE, O_RDONLY);
+ if (fd < 0)
+ return 0;
+ close(fd);
+ return 1;
+}
+
+#if 0
+static int sort_regions(mem_rgns_t *rgn)
+{
+ int i, j;
+ unsigned long long tstart, tend;
+ for (i = 0; i < rgn->size; i++) {
+ for (j = 0; j < rgn->size - i - 1; j++) {
+ if (rgn->ranges[j].start > rgn->ranges[j+1].start) {
+ tstart = rgn->ranges[j].start;
+ tend = rgn->ranges[j].end;
+ rgn->ranges[j].start = rgn->ranges[j+1].start;
+ rgn->ranges[j].end = rgn->ranges[j+1].end;
+ rgn->ranges[j+1].start = tstart;
+ rgn->ranges[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+
+}
+#endif
+
diff --git a/kexec/arch/ppc64/crashdump-ppc64.h b/kexec/arch/ppc64/crashdump-ppc64.h
new file mode 100644
index 0000000..b0cba8a
--- /dev/null
+++ b/kexec/arch/ppc64/crashdump-ppc64.h
@@ -0,0 +1,51 @@
+#ifndef CRASHDUMP_PPC64_H
+#define CRASHDUMP_PPC64_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+struct kexec_info;
+int load_crashdump_segments(struct kexec_info *info, char *mod_cmdline,
+ uint64_t max_addr, unsigned long min_base);
+void add_usable_mem_rgns(unsigned long long base, unsigned long long size);
+
+#define PAGE_OFFSET 0xC000000000000000ULL
+#define KERNELBASE PAGE_OFFSET
+#define VMALLOCBASE 0xD000000000000000ULL
+
+#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
+#define MAXMEM (-(unsigned long)(KERNELBASE-VMALLOCBASE))
+
+#define COMMAND_LINE_SIZE 2048 /* from kernel */
+/* Backup Region, First 64K of System RAM. */
+#define BACKUP_SRC_START 0x0000
+#define BACKUP_SRC_END 0xffff
+#define BACKUP_SRC_SIZE (BACKUP_SRC_END - BACKUP_SRC_START + 1)
+
+#define KDUMP_BACKUP_LIMIT BACKUP_SRC_SIZE
+
+#define KERNEL_RUN_AT_ZERO_MAGIC 0x72756e30 /* "run0" */
+
+extern uint64_t crash_base;
+extern uint64_t crash_size;
+extern uint64_t memory_limit;
+extern unsigned int rtas_base;
+extern unsigned int rtas_size;
+extern uint64_t opal_base;
+extern uint64_t opal_size;
+
+/*
+ * In case of ibm,dynamic-memory-v2 property, this is the number of LMB
+ * sets where each set represents a group of sequential LMB entries. In
+ * case of ibm,dynamic-memory property, the number of LMB sets is nothing
+ * but the total number of LMB entries.
+ */
+extern unsigned int num_of_lmb_sets;
+extern unsigned int is_dyn_mem_v2;
+extern uint64_t lmb_size;
+
+#define LMB_ENTRY_SIZE 24
+#define DRCONF_ADDR (is_dyn_mem_v2 ? 4 : 0)
+#define DRCONF_FLAGS 20
+
+#endif /* CRASHDUMP_PPC64_H */
diff --git a/kexec/arch/ppc64/fdt.c b/kexec/arch/ppc64/fdt.c
new file mode 100644
index 0000000..8bc6d2d
--- /dev/null
+++ b/kexec/arch/ppc64/fdt.c
@@ -0,0 +1,78 @@
+/*
+ * ppc64 fdt fixups
+ *
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ */
+
+#include <arch/fdt.h>
+#include <libfdt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * Let the kernel know it booted from kexec, as some things (e.g.
+ * secondary CPU release) may work differently.
+ */
+static int fixup_kexec_prop(void *fdt)
+{
+ int err, nodeoffset;
+
+ nodeoffset = fdt_subnode_offset(fdt, 0, "chosen");
+ if (nodeoffset < 0)
+ nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
+ if (nodeoffset < 0) {
+ printf("%s: add /chosen %s\n", __func__,
+ fdt_strerror(nodeoffset));
+ return -1;
+ }
+
+ err = fdt_setprop(fdt, nodeoffset, "linux,booted-from-kexec",
+ NULL, 0);
+ if (err < 0) {
+ printf("%s: couldn't write linux,booted-from-kexec: %s\n",
+ __func__, fdt_strerror(err));
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/*
+ * For now, assume that the added content fits in the file.
+ * This should be the case when flattening from /proc/device-tree,
+ * and when passing in a dtb, dtc can be told to add padding.
+ */
+int fixup_dt(char **fdt, off_t *size)
+{
+ int ret;
+
+ *size += 4096;
+ *fdt = realloc(*fdt, *size);
+ if (!*fdt) {
+ fprintf(stderr, "%s: out of memory\n", __func__);
+ return -1;
+ }
+
+ ret = fdt_open_into(*fdt, *fdt, *size);
+ if (ret < 0) {
+ fprintf(stderr, "%s: fdt_open_into: %s\n", __func__,
+ fdt_strerror(ret));
+ return -1;
+ }
+
+ ret = fixup_kexec_prop(*fdt);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
diff --git a/kexec/arch/ppc64/include/arch/fdt.h b/kexec/arch/ppc64/include/arch/fdt.h
new file mode 100644
index 0000000..b19f185
--- /dev/null
+++ b/kexec/arch/ppc64/include/arch/fdt.h
@@ -0,0 +1,8 @@
+#ifndef KEXEC_ARCH_PPC64_FDT
+#define KEXEC_ARCH_PPC64_FDT
+
+#include <sys/types.h>
+
+int fixup_dt(char **fdt, off_t *size);
+
+#endif
diff --git a/kexec/arch/ppc64/include/arch/options.h b/kexec/arch/ppc64/include/arch/options.h
new file mode 100644
index 0000000..2bca96a
--- /dev/null
+++ b/kexec/arch/ppc64/include/arch/options.h
@@ -0,0 +1,51 @@
+#ifndef KEXEC_ARCH_PPC64_OPTIONS_H
+#define KEXEC_ARCH_PPC64_OPTIONS_H
+
+#define OPT_ELF64_CORE (OPT_MAX+0)
+#define OPT_DT_NO_OLD_ROOT (OPT_MAX+1)
+#define OPT_ARCH_MAX (OPT_MAX+2)
+
+/* All 'local' loader options: */
+#define OPT_APPEND (OPT_ARCH_MAX+0)
+#define OPT_RAMDISK (OPT_ARCH_MAX+1)
+#define OPT_DEVICETREEBLOB (OPT_ARCH_MAX+2)
+#define OPT_ARGS_IGNORE (OPT_ARCH_MAX+3)
+#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+4)
+
+/* Options relevant to the architecture (excluding loader-specific ones): */
+#define KEXEC_ARCH_OPTIONS \
+ KEXEC_OPTIONS \
+ { "elf64-core-headers", 0, 0, OPT_ELF64_CORE }, \
+ { "dt-no-old-root", 0, 0, OPT_DT_NO_OLD_ROOT }, \
+
+#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR ""
+
+/* The following two #defines list ALL of the options added by all of the
+ * architecture's loaders.
+ * o main() uses this complete list to scan for its options, ignoring
+ * arch-specific/loader-specific ones.
+ * o Then, arch_process_options() uses this complete list to scan for its
+ * options, ignoring general/loader-specific ones.
+ * o Then, the file_type[n].load re-scans for options, using
+ * KEXEC_ARCH_OPTIONS plus its loader-specific options subset.
+ * Any unrecognised options cause an error here.
+ *
+ * This is done so that main()'s/arch_process_options()'s getopt_long() calls
+ * don't choose a kernel filename from random arguments to options they don't
+ * recognise -- as they now recognise (if not act upon) all possible options.
+ */
+#define KEXEC_ALL_OPTIONS \
+ KEXEC_ARCH_OPTIONS \
+ { "command-line", 1, NULL, OPT_APPEND }, \
+ { "append", 1, NULL, OPT_APPEND }, \
+ { "ramdisk", 1, NULL, OPT_RAMDISK }, \
+ { "initrd", 1, NULL, OPT_RAMDISK }, \
+ { "devicetreeblob", 1, NULL, OPT_DEVICETREEBLOB }, \
+ { "dtb", 1, NULL, OPT_DEVICETREEBLOB }, \
+ { "args-linux", 0, NULL, OPT_ARGS_IGNORE }, \
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE },
+
+#define KEXEC_ALL_OPT_STR KEXEC_OPT_STR
+
+
+#endif /* KEXEC_ARCH_PPC64_OPTIONS_H */
diff --git a/kexec/arch/ppc64/kexec-elf-ppc64.c b/kexec/arch/ppc64/kexec-elf-ppc64.c
new file mode 100644
index 0000000..01d045f
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-elf-ppc64.c
@@ -0,0 +1,496 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2004 Adam Litke (agl@us.ibm.com)
+ * Copyright (C) 2004 IBM Corp.
+ * Copyright (C) 2005 R Sharada (sharada@in.ibm.com)
+ * Copyright (C) 2006 Mohan Kumar M (mohan@in.ibm.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 <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <linux/elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ppc64.h"
+#include "../../fs2dt.h"
+#include "crashdump-ppc64.h"
+#include <libfdt.h>
+#include <arch/fdt.h>
+#include <arch/options.h>
+
+uint64_t initrd_base, initrd_size;
+unsigned char reuse_initrd = 0;
+const char *ramdisk;
+
+int elf_ppc64_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) {
+ goto out;
+ }
+
+ /* Verify the architecuture specific bits */
+ if ((ehdr.e_machine != EM_PPC64) && (ehdr.e_machine != EM_PPC)) {
+ /* for a different architecture */
+ result = -1;
+ goto out;
+ }
+ result = 0;
+ out:
+ free_elf_info(&ehdr);
+ return result;
+}
+
+void arch_reuse_initrd(void)
+{
+ reuse_initrd = 1;
+}
+
+static int read_prop(char *name, void *value, size_t len)
+{
+ int fd;
+ size_t rlen;
+
+ fd = open(name, O_RDONLY);
+ if (fd == -1)
+ return -1;
+
+ rlen = read(fd, value, len);
+ if (rlen < 0)
+ fprintf(stderr, "Warning : Can't read %s : %s",
+ name, strerror(errno));
+ else if (rlen != len)
+ fprintf(stderr, "Warning : short read from %s", name);
+
+ close(fd);
+ return 0;
+}
+
+static int elf_ppc64_load_file(int argc, char **argv, struct kexec_info *info)
+{
+ int ret = 0;
+ char *cmdline, *dtb;
+ char *append_cmdline = NULL;
+ char *reuse_cmdline = NULL;
+ int opt, cmdline_len = 0;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "devicetreeblob", 1, NULL, OPT_DEVICETREEBLOB },
+ { "dtb", 1, NULL, OPT_DEVICETREEBLOB },
+ { "args-linux", 0, NULL, OPT_ARGS_IGNORE },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE},
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ /* Parse command line arguments */
+ cmdline = 0;
+ dtb = 0;
+ ramdisk = 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:
+ append_cmdline = optarg;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_DEVICETREEBLOB:
+ dtb = optarg;
+ break;
+ case OPT_ARGS_IGNORE:
+ break;
+ case OPT_REUSE_CMDLINE:
+ reuse_cmdline = get_command_line();
+ break;
+ }
+ }
+
+ if (dtb)
+ die("--dtb not supported while using --kexec-file-syscall.\n");
+
+ if (reuse_initrd)
+ die("--reuseinitrd not supported with --kexec-file-syscall.\n");
+
+ cmdline = concat_cmdline(reuse_cmdline, append_cmdline);
+ if (!reuse_cmdline)
+ free(reuse_cmdline);
+
+ if (cmdline) {
+ cmdline_len = strlen(cmdline) + 1;
+ } else {
+ cmdline = strdup("\0");
+ cmdline_len = 1;
+ }
+
+ if (ramdisk) {
+ info->initrd_fd = open(ramdisk, O_RDONLY);
+ if (info->initrd_fd == -1) {
+ fprintf(stderr, "Could not open initrd file %s:%s\n",
+ ramdisk, strerror(errno));
+ ret = -1;
+ goto out;
+ }
+ }
+
+ info->command_line = cmdline;
+ info->command_line_len = cmdline_len;
+ return ret;
+out:
+ if (cmdline_len == 1)
+ free(cmdline);
+ return ret;
+}
+
+int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info)
+{
+ struct mem_ehdr ehdr;
+ char *cmdline, *modified_cmdline = NULL;
+ char *reuse_cmdline = NULL;
+ char *append_cmdline = NULL;
+ const char *devicetreeblob;
+ uint64_t max_addr, hole_addr;
+ char *seg_buf = NULL;
+ off_t seg_size = 0;
+ struct mem_phdr *phdr;
+ size_t size;
+#ifdef NEED_RESERVE_DTB
+ uint64_t *rsvmap_ptr;
+ struct bootblock *bb_ptr;
+#endif
+ int result, opt;
+ uint64_t my_kernel, my_dt_offset;
+ uint64_t my_opal_base = 0, my_opal_entry = 0;
+ unsigned int my_panic_kernel;
+ uint64_t my_stack, my_backup_start;
+ uint64_t toc_addr;
+ uint32_t my_run_at_load;
+ unsigned int slave_code[256/sizeof (unsigned int)], master_entry;
+
+ /* See options.h -- add any more there, too. */
+ static const struct option options[] = {
+ KEXEC_ARCH_OPTIONS
+ { "command-line", 1, NULL, OPT_APPEND },
+ { "append", 1, NULL, OPT_APPEND },
+ { "ramdisk", 1, NULL, OPT_RAMDISK },
+ { "initrd", 1, NULL, OPT_RAMDISK },
+ { "devicetreeblob", 1, NULL, OPT_DEVICETREEBLOB },
+ { "dtb", 1, NULL, OPT_DEVICETREEBLOB },
+ { "args-linux", 0, NULL, OPT_ARGS_IGNORE },
+ { "reuse-cmdline", 0, NULL, OPT_REUSE_CMDLINE},
+ { 0, 0, NULL, 0 },
+ };
+
+ static const char short_options[] = KEXEC_OPT_STR "";
+
+ if (info->file_mode)
+ return elf_ppc64_load_file(argc, argv, info);
+
+ /* Parse command line arguments */
+ initrd_base = 0;
+ initrd_size = 0;
+ cmdline = 0;
+ ramdisk = 0;
+ devicetreeblob = 0;
+ max_addr = 0xFFFFFFFFFFFFFFFFULL;
+ hole_addr = 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:
+ append_cmdline = optarg;
+ break;
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_DEVICETREEBLOB:
+ devicetreeblob = optarg;
+ break;
+ case OPT_ARGS_IGNORE:
+ break;
+ case OPT_REUSE_CMDLINE:
+ reuse_cmdline = get_command_line();
+ break;
+ }
+ }
+
+ cmdline = concat_cmdline(reuse_cmdline, append_cmdline);
+ if (!reuse_cmdline)
+ free(reuse_cmdline);
+
+ if (!cmdline)
+ fprintf(stdout, "Warning: append= option is not passed. Using the first kernel root partition\n");
+
+ if (ramdisk && reuse_initrd)
+ die("Can't specify --ramdisk or --initrd with --reuseinitrd\n");
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (cmdline) {
+ strncpy(modified_cmdline, cmdline, COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+ }
+
+ /* Parse the Elf file */
+ result = build_elf_exec_info(buf, len, &ehdr, 0);
+ if (result < 0) {
+ free_elf_info(&ehdr);
+ return result;
+ }
+
+ /* Load the Elf data. Physical load addresses in elf64 header do not
+ * show up correctly. Use user supplied address for now to patch the
+ * elf header
+ */
+
+ phdr = &ehdr.e_phdr[0];
+ size = phdr->p_filesz;
+ if (size > phdr->p_memsz)
+ size = phdr->p_memsz;
+
+ my_kernel = hole_addr = locate_hole(info, size, 0, 0, max_addr, 1);
+ ehdr.e_phdr[0].p_paddr = hole_addr;
+ result = elf_exec_load(&ehdr, info);
+ if (result < 0) {
+ free_elf_info(&ehdr);
+ return result;
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ result = load_crashdump_segments(info, modified_cmdline,
+ max_addr, 0);
+ if (result < 0)
+ return -1;
+ /* Use new command line. */
+ cmdline = modified_cmdline;
+ }
+
+ /* Add v2wrap to the current image */
+ elf_rel_build_load(info, &info->rhdr, purgatory,
+ purgatory_size, 0, max_addr, 1, 0);
+
+ /* Add a ram-disk to the current image
+ * Note: Add the ramdisk after elf_rel_build_load
+ */
+ if (ramdisk) {
+ if (devicetreeblob) {
+ fprintf(stderr,
+ "Can't use ramdisk with device tree blob input\n");
+ return -1;
+ }
+ seg_buf = slurp_file(ramdisk, &seg_size);
+ hole_addr = add_buffer(info, seg_buf, seg_size, seg_size,
+ 0, 0, max_addr, 1);
+ initrd_base = hole_addr;
+ initrd_size = seg_size;
+ } /* ramdisk */
+
+ if (devicetreeblob) {
+ /* Grab device tree from buffer */
+ seg_buf = slurp_file(devicetreeblob, &seg_size);
+ } else {
+ /* create from fs2dt */
+ create_flatten_tree(&seg_buf, &seg_size, cmdline);
+ }
+
+ result = fixup_dt(&seg_buf, &seg_size);
+ if (result < 0)
+ return result;
+
+ my_dt_offset = add_buffer(info, seg_buf, seg_size, seg_size,
+ 0, 0, max_addr, -1);
+
+#ifdef NEED_RESERVE_DTB
+ /* patch reserve map address for flattened device-tree
+ * find last entry (both 0) in the reserve mem list. Assume DT
+ * entry is before this one
+ */
+ bb_ptr = (struct bootblock *)(seg_buf);
+ rsvmap_ptr = (uint64_t *)(seg_buf + be32_to_cpu(bb_ptr->off_mem_rsvmap));
+ while (*rsvmap_ptr || *(rsvmap_ptr+1))
+ rsvmap_ptr += 2;
+ rsvmap_ptr -= 2;
+ *rsvmap_ptr = cpu_to_be64(my_dt_offset);
+ rsvmap_ptr++;
+ *rsvmap_ptr = cpu_to_be64((uint64_t)be32_to_cpu(bb_ptr->totalsize));
+#endif
+
+ if (read_prop("/proc/device-tree/ibm,opal/opal-base-address",
+ &my_opal_base, sizeof(my_opal_base)) == 0) {
+ my_opal_base = be64_to_cpu(my_opal_base);
+ elf_rel_set_symbol(&info->rhdr, "opal_base",
+ &my_opal_base, sizeof(my_opal_base));
+ }
+
+ if (read_prop("/proc/device-tree/ibm,opal/opal-entry-address",
+ &my_opal_entry, sizeof(my_opal_entry)) == 0) {
+ my_opal_entry = be64_to_cpu(my_opal_entry);
+ elf_rel_set_symbol(&info->rhdr, "opal_entry",
+ &my_opal_entry, sizeof(my_opal_entry));
+ }
+
+ /* Set kernel */
+ elf_rel_set_symbol(&info->rhdr, "kernel", &my_kernel, sizeof(my_kernel));
+
+ /* Set dt_offset */
+ elf_rel_set_symbol(&info->rhdr, "dt_offset", &my_dt_offset,
+ sizeof(my_dt_offset));
+
+ /* get slave code from new kernel, put in purgatory */
+ elf_rel_get_symbol(&info->rhdr, "purgatory_start", slave_code,
+ sizeof(slave_code));
+ master_entry = slave_code[0];
+ memcpy(slave_code, phdr->p_data, sizeof(slave_code));
+ slave_code[0] = master_entry;
+ elf_rel_set_symbol(&info->rhdr, "purgatory_start", slave_code,
+ sizeof(slave_code));
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ my_panic_kernel = 1;
+ /* Set panic flag */
+ elf_rel_set_symbol(&info->rhdr, "panic_kernel",
+ &my_panic_kernel, sizeof(my_panic_kernel));
+
+ /* Set backup address */
+ my_backup_start = info->backup_start;
+ elf_rel_set_symbol(&info->rhdr, "backup_start",
+ &my_backup_start, sizeof(my_backup_start));
+
+ /* Tell relocatable kernel to run at load address
+ * via word before slave code in purgatory
+ */
+
+ elf_rel_get_symbol(&info->rhdr, "run_at_load", &my_run_at_load,
+ sizeof(my_run_at_load));
+ if (my_run_at_load == KERNEL_RUN_AT_ZERO_MAGIC)
+ my_run_at_load = 1;
+ /* else it should be a fixed offset image */
+ elf_rel_set_symbol(&info->rhdr, "run_at_load", &my_run_at_load,
+ sizeof(my_run_at_load));
+ }
+
+ /* Set stack address */
+ my_stack = locate_hole(info, 16*1024, 0, 0, max_addr, 1);
+ my_stack += 16*1024;
+ elf_rel_set_symbol(&info->rhdr, "stack", &my_stack, sizeof(my_stack));
+
+ /* Set toc */
+ toc_addr = my_r2(&info->rhdr);
+ elf_rel_set_symbol(&info->rhdr, "my_toc", &toc_addr, sizeof(toc_addr));
+
+ /* Set debug */
+ elf_rel_set_symbol(&info->rhdr, "debug", &my_debug, sizeof(my_debug));
+
+ my_kernel = 0;
+ my_dt_offset = 0;
+ my_panic_kernel = 0;
+ my_backup_start = 0;
+ my_stack = 0;
+ toc_addr = 0;
+ my_run_at_load = 0;
+ my_debug = 0;
+ my_opal_base = 0;
+ my_opal_entry = 0;
+
+ elf_rel_get_symbol(&info->rhdr, "opal_base", &my_opal_base,
+ sizeof(my_opal_base));
+ elf_rel_get_symbol(&info->rhdr, "opal_entry", &my_opal_entry,
+ sizeof(my_opal_entry));
+ elf_rel_get_symbol(&info->rhdr, "kernel", &my_kernel, sizeof(my_kernel));
+ elf_rel_get_symbol(&info->rhdr, "dt_offset", &my_dt_offset,
+ sizeof(my_dt_offset));
+ elf_rel_get_symbol(&info->rhdr, "run_at_load", &my_run_at_load,
+ sizeof(my_run_at_load));
+ elf_rel_get_symbol(&info->rhdr, "panic_kernel", &my_panic_kernel,
+ sizeof(my_panic_kernel));
+ elf_rel_get_symbol(&info->rhdr, "backup_start", &my_backup_start,
+ sizeof(my_backup_start));
+ elf_rel_get_symbol(&info->rhdr, "stack", &my_stack, sizeof(my_stack));
+ elf_rel_get_symbol(&info->rhdr, "my_toc", &toc_addr,
+ sizeof(toc_addr));
+ elf_rel_get_symbol(&info->rhdr, "debug", &my_debug, sizeof(my_debug));
+
+ dbgprintf("info->entry is %p\n", info->entry);
+ dbgprintf("kernel is %llx\n", (unsigned long long)my_kernel);
+ dbgprintf("dt_offset is %llx\n",
+ (unsigned long long)my_dt_offset);
+ dbgprintf("run_at_load flag is %x\n", my_run_at_load);
+ dbgprintf("panic_kernel is %x\n", my_panic_kernel);
+ dbgprintf("backup_start is %llx\n",
+ (unsigned long long)my_backup_start);
+ dbgprintf("stack is %llx\n", (unsigned long long)my_stack);
+ dbgprintf("toc_addr is %llx\n", (unsigned long long)toc_addr);
+ dbgprintf("purgatory size is %zu\n", purgatory_size);
+ dbgprintf("debug is %d\n", my_debug);
+ dbgprintf("opal_base is %llx\n", (unsigned long long) my_opal_base);
+ dbgprintf("opal_entry is %llx\n", (unsigned long long) my_opal_entry);
+
+ return 0;
+}
+
+void elf_ppc64_usage(void)
+{
+ fprintf(stderr, " --command-line=<Command line> command line to append.\n");
+ fprintf(stderr, " --append=<Command line> same as --command-line.\n");
+ fprintf(stderr, " --ramdisk=<filename> Initial RAM disk.\n");
+ fprintf(stderr, " --initrd=<filename> same as --ramdisk.\n");
+ fprintf(stderr, " --devicetreeblob=<filename> Specify device tree blob file.\n");
+ fprintf(stderr, " ");
+ fprintf(stderr, "Not applicable while using --kexec-file-syscall.\n");
+ fprintf(stderr, " --reuse-cmdline Use kernel command line from running system.\n");
+ fprintf(stderr, " --dtb=<filename> same as --devicetreeblob.\n");
+
+ fprintf(stderr, "elf support is still broken\n");
+}
diff --git a/kexec/arch/ppc64/kexec-elf-rel-ppc64.c b/kexec/arch/ppc64/kexec-elf-rel-ppc64.c
new file mode 100644
index 0000000..51b1354
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-elf-rel-ppc64.c
@@ -0,0 +1,204 @@
+#include <stdio.h>
+#include <elf.h>
+#include <string.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "kexec-ppc64.h"
+
+#if defined(_CALL_ELF) && _CALL_ELF == 2
+#define STO_PPC64_LOCAL_BIT 5
+#define STO_PPC64_LOCAL_MASK (7 << STO_PPC64_LOCAL_BIT)
+#define PPC64_LOCAL_ENTRY_OFFSET(other) \
+ (((1 << (((other) & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT)) >> 2) << 2)
+
+static unsigned int local_entry_offset(struct mem_sym *sym)
+{
+ /* If this symbol has a local entry point, use it. */
+ return PPC64_LOCAL_ENTRY_OFFSET(sym->st_other);
+}
+#else
+static unsigned int local_entry_offset(struct mem_sym *UNUSED(sym))
+{
+ return 0;
+}
+#endif
+
+static struct mem_shdr *toc_section(const struct mem_ehdr *ehdr)
+{
+ struct mem_shdr *shdr, *shdr_end;
+ unsigned char *strtab;
+
+ strtab = (unsigned char *)ehdr->e_shdr[ehdr->e_shstrndx].sh_data;
+ shdr_end = &ehdr->e_shdr[ehdr->e_shnum];
+ for (shdr = ehdr->e_shdr; shdr != shdr_end; shdr++) {
+ if (shdr->sh_size &&
+ strcmp((char *)&strtab[shdr->sh_name], ".toc") == 0) {
+ return shdr;
+ }
+ }
+
+ return NULL;
+}
+
+int machine_verify_elf_rel(struct mem_ehdr *ehdr)
+{
+ struct mem_shdr *toc;
+
+ if (ehdr->ei_class != ELFCLASS64) {
+ return 0;
+ }
+ if (ehdr->e_machine != EM_PPC64) {
+ return 0;
+ }
+
+ /* Ensure .toc is sufficiently aligned. */
+ toc = toc_section(ehdr);
+ if (toc && toc->sh_addralign < 256)
+ toc->sh_addralign = 256;
+ return 1;
+}
+
+/* r2 is the TOC pointer: it actually points 0x8000 into the TOC (this
+ gives the value maximum span in an instruction which uses a signed
+ offset) */
+unsigned long my_r2(const struct mem_ehdr *ehdr)
+{
+ struct mem_shdr *shdr;
+
+ shdr = toc_section(ehdr);
+ if (!shdr) {
+ die("TOC reloc without a toc section?");
+ }
+
+ return shdr->sh_addr + 0x8000;
+}
+
+static void do_relative_toc(unsigned long value, uint16_t *location,
+ unsigned long mask, int complain_signed)
+{
+ if (complain_signed && (value + 0x8000 > 0xffff)) {
+ die("TOC16 relocation overflows (%lu)\n", value);
+ }
+
+ if ((~mask & 0xffff) & value) {
+ die("bad TOC16 relocation (%lu)\n", value);
+ }
+
+ *location = (*location & ~mask) | (value & mask);
+}
+
+void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *sym,
+ unsigned long r_type, void *location, unsigned long address,
+ unsigned long value)
+{
+ switch(r_type) {
+ case R_PPC64_ADDR32:
+ /* Simply set it */
+ *(uint32_t *)location = value;
+ break;
+
+ case R_PPC64_ADDR64:
+ case R_PPC64_REL64:
+ /* Simply set it */
+ *(uint64_t *)location = value;
+ break;
+
+ case R_PPC64_REL32:
+ *(uint32_t *)location = value - (uint32_t)location;
+ break;
+
+ case R_PPC64_TOC:
+ *(uint64_t *)location = my_r2(ehdr);
+ break;
+
+ case R_PPC64_TOC16:
+ do_relative_toc(value - my_r2(ehdr), location, 0xffff, 1);
+ break;
+
+ case R_PPC64_TOC16_DS:
+ do_relative_toc(value - my_r2(ehdr), location, 0xfffc, 1);
+ break;
+
+ case R_PPC64_TOC16_LO:
+ do_relative_toc(value - my_r2(ehdr), location, 0xffff, 0);
+ break;
+
+ case R_PPC64_TOC16_LO_DS:
+ do_relative_toc(value - my_r2(ehdr), location, 0xfffc, 0);
+ break;
+
+ case R_PPC64_TOC16_HI:
+ do_relative_toc((value - my_r2(ehdr)) >> 16, location,
+ 0xffff, 0);
+ break;
+
+ case R_PPC64_TOC16_HA:
+ do_relative_toc((value - my_r2(ehdr) + 0x8000) >> 16, location,
+ 0xffff, 0);
+ break;
+
+ case R_PPC64_REL24:
+ value += local_entry_offset(sym);
+ /* Convert value to relative */
+ value -= address;
+ if (value + 0x2000000 > 0x3ffffff || (value & 3) != 0) {
+ die("REL24 %li out of range!\n", (long int)value);
+ }
+
+ /* Only replace bits 2 through 26 */
+ *(uint32_t *)location = (*(uint32_t *)location & ~0x03fffffc) |
+ (value & 0x03fffffc);
+ break;
+
+ case R_PPC64_ADDR16_LO:
+ *(uint16_t *)location = value & 0xffff;
+ break;
+
+ case R_PPC64_ADDR16_HI:
+ *(uint16_t *)location = (value >> 16) & 0xffff;
+ break;
+
+ case R_PPC64_ADDR16_HA:
+ *(uint16_t *)location = (((value + 0x8000) >> 16) & 0xffff);
+ break;
+
+ case R_PPC64_ADDR16_HIGHER:
+ *(uint16_t *)location = (((uint64_t)value >> 32) & 0xffff);
+ break;
+
+ case R_PPC64_ADDR16_HIGHEST:
+ *(uint16_t *)location = (((uint64_t)value >> 48) & 0xffff);
+ break;
+
+ /* R_PPC64_REL16_HA and R_PPC64_REL16_LO are handled to support
+ * ABIv2 r2 assignment based on r12 for PIC executable.
+ * Here address is know so replace
+ * 0: addis 2,12,.TOC.-0b@ha
+ * addi 2,2,.TOC.-0b@l
+ * by
+ * lis 2,.TOC.@ha
+ * addi 2,2,.TOC.@l
+ */
+ case R_PPC64_REL16_HA:
+ /* check that we are dealing with the addis 2,12 instruction */
+ if (((*(uint32_t*)location) & 0xffff0000) != 0x3c4c0000)
+ die("Unexpected instruction for R_PPC64_REL16_HA");
+ value += my_r2(ehdr);
+ /* replacing by lis 2 */
+ *(uint32_t *)location = 0x3c400000 + ((value >> 16) & 0xffff);
+ break;
+
+ case R_PPC64_REL16_LO:
+ /* check that we are dealing with the addi 2,2 instruction */
+ if (((*(uint32_t*)location) & 0xffff0000) != 0x38420000)
+ die("Unexpected instruction for R_PPC64_REL16_LO");
+
+ value += my_r2(ehdr) - 4;
+ *(uint16_t *)location = value & 0xffff;
+ break;
+
+ default:
+ die("Unknown rela relocation: %lu\n", r_type);
+ break;
+ }
+}
diff --git a/kexec/arch/ppc64/kexec-ppc64.c b/kexec/arch/ppc64/kexec-ppc64.c
new file mode 100644
index 0000000..611809f
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-ppc64.c
@@ -0,0 +1,969 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2003-2005 Eric Biederman (ebiederm@xmission.com)
+ * Copyright (C) 2005 R Sharada (sharada@in.ibm.com), IBM Corporation
+ *
+ * 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.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <getopt.h>
+#include "../../kexec.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ppc64.h"
+#include "../../fs2dt.h"
+#include "crashdump-ppc64.h"
+#include <arch/options.h>
+
+static struct memory_range *exclude_range = NULL;
+static struct memory_range *memory_range = NULL;
+static struct memory_range *base_memory_range = NULL;
+static uint64_t rma_top;
+uint64_t memory_max = 0;
+uint64_t memory_limit;
+static int nr_memory_ranges, nr_exclude_ranges;
+uint64_t crash_base, crash_size;
+unsigned int rtas_base, rtas_size;
+uint64_t opal_base, opal_size;
+int max_memory_ranges;
+
+static void cleanup_memory_ranges(void)
+{
+ if (memory_range)
+ free(memory_range);
+ if (base_memory_range)
+ free(base_memory_range);
+ if (exclude_range)
+ free(exclude_range);
+ if (usablemem_rgns.ranges)
+ free(usablemem_rgns.ranges);
+}
+
+/*
+ * Allocate memory for various data structures used to hold
+ * values of different memory ranges
+ */
+static int alloc_memory_ranges(void)
+{
+ int memory_range_len;
+
+ memory_range_len = sizeof(struct memory_range) * max_memory_ranges;
+
+ memory_range = (struct memory_range *) malloc(memory_range_len);
+ if (!memory_range)
+ return -1;
+
+ base_memory_range = (struct memory_range *) malloc(memory_range_len);
+ if (!base_memory_range)
+ goto err1;
+
+ exclude_range = (struct memory_range *) malloc(memory_range_len);
+ if (!exclude_range)
+ goto err1;
+
+ usablemem_rgns.ranges = (struct memory_range *)
+ malloc(memory_range_len);
+ if (!(usablemem_rgns.ranges))
+ goto err1;
+
+ memset(memory_range, 0, memory_range_len);
+ memset(base_memory_range, 0, memory_range_len);
+ memset(exclude_range, 0, memory_range_len);
+ memset(usablemem_rgns.ranges, 0, memory_range_len);
+ return 0;
+
+err1:
+ fprintf(stderr, "memory range structure allocation failure\n");
+ cleanup_memory_ranges();
+ return -1;
+
+}
+
+static int realloc_memory_ranges(void)
+{
+ size_t memory_range_len;
+
+ max_memory_ranges++;
+ memory_range_len = sizeof(struct memory_range) * max_memory_ranges;
+
+ memory_range = (struct memory_range *) realloc(memory_range, memory_range_len);
+ if (!memory_range)
+ goto err;
+
+ base_memory_range = (struct memory_range *) realloc(base_memory_range, memory_range_len);
+ if (!base_memory_range)
+ goto err;
+
+ exclude_range = (struct memory_range *) realloc(exclude_range, memory_range_len);
+ if (!exclude_range)
+ goto err;
+
+ usablemem_rgns.ranges = (struct memory_range *)
+ realloc(usablemem_rgns.ranges, memory_range_len);
+ if (!(usablemem_rgns.ranges))
+ goto err;
+
+ return 0;
+
+err:
+ fprintf(stderr, "memory range structure re-allocation failure\n");
+ return -1;
+}
+
+
+static void add_base_memory_range(uint64_t start, uint64_t end)
+{
+ base_memory_range[nr_memory_ranges].start = start;
+ base_memory_range[nr_memory_ranges].end = end;
+ base_memory_range[nr_memory_ranges].type = RANGE_RAM;
+ nr_memory_ranges++;
+ if (nr_memory_ranges >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ dbgprintf("%016llx-%016llx : %x\n",
+ base_memory_range[nr_memory_ranges-1].start,
+ base_memory_range[nr_memory_ranges-1].end,
+ base_memory_range[nr_memory_ranges-1].type);
+}
+
+static int get_dyn_reconf_base_ranges(void)
+{
+ uint64_t start, end;
+ uint64_t size;
+ char fname[128], buf[32];
+ FILE *file;
+ unsigned int i;
+ int n;
+
+ strcpy(fname, "/proc/device-tree/");
+ strcat(fname, "ibm,dynamic-reconfiguration-memory/ibm,lmb-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ return -1;
+ }
+ if (fread(buf, 1, 8, file) != 8) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ /*
+ * lmb_size, num_of_lmb_sets(global variables) are
+ * initialized once here.
+ */
+ size = lmb_size = be64_to_cpu(((uint64_t *)buf)[0]);
+ fclose(file);
+
+ strcpy(fname, "/proc/device-tree/");
+ strcat(fname,
+ "ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory");
+ if ((file = fopen(fname, "r")) == NULL) {
+ strcat(fname, "-v2");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ return -1;
+ }
+
+ is_dyn_mem_v2 = 1;
+ }
+
+ /* first 4 bytes tell the number of lmb set entries */
+ if (fread(buf, 1, 4, file) != 4) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ num_of_lmb_sets = be32_to_cpu(((unsigned int *)buf)[0]);
+
+ for (i = 0; i < num_of_lmb_sets; i++) {
+ if ((n = fread(buf, 1, LMB_ENTRY_SIZE, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ return -1;
+ }
+ if (nr_memory_ranges >= max_memory_ranges) {
+ fclose(file);
+ return -1;
+ }
+
+ /*
+ * If the property is ibm,dynamic-memory-v2, the first 4 bytes
+ * tell the number of sequential LMBs in this entry.
+ */
+ if (is_dyn_mem_v2)
+ size = be32_to_cpu(((unsigned int *)buf)[0]) * lmb_size;
+
+ start = be64_to_cpu(*((uint64_t *)&buf[DRCONF_ADDR]));
+ end = start + size;
+ add_base_memory_range(start, end);
+ }
+ fclose(file);
+ return 0;
+}
+
+/* Sort the base ranges in memory - this is useful for ensuring that our
+ * ranges are in ascending order, even if device-tree read of memory nodes
+ * is done differently. Also, could be used for other range coalescing later
+ */
+static int sort_base_ranges(void)
+{
+ int i, j;
+ unsigned long long tstart, tend;
+
+ for (i = 0; i < nr_memory_ranges - 1; i++) {
+ for (j = 0; j < nr_memory_ranges - i - 1; j++) {
+ if (base_memory_range[j].start > base_memory_range[j+1].start) {
+ tstart = base_memory_range[j].start;
+ tend = base_memory_range[j].end;
+ base_memory_range[j].start = base_memory_range[j+1].start;
+ base_memory_range[j].end = base_memory_range[j+1].end;
+ base_memory_range[j+1].start = tstart;
+ base_memory_range[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+}
+
+/* Get base memory ranges */
+static int get_base_ranges(void)
+{
+ uint64_t start, end;
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[256];
+ char buf[MAXBYTES];
+ DIR *dir, *dmem;
+ FILE *file;
+ struct dirent *dentry, *mentry;
+ int n;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ return -1;
+ }
+ while ((dentry = readdir(dir)) != NULL) {
+ if (!strncmp(dentry->d_name,
+ "ibm,dynamic-reconfiguration-memory", 35)) {
+ get_dyn_reconf_base_ranges();
+ continue;
+ }
+ if (strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory"))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ if ((dmem = opendir(fname)) == NULL) {
+ perror(fname);
+ closedir(dir);
+ return -1;
+ }
+ while ((mentry = readdir(dmem)) != NULL) {
+ if (strcmp(mentry->d_name, "reg"))
+ continue;
+ strcat(fname, "/reg");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ closedir(dmem);
+ closedir(dir);
+ return -1;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ fclose(file);
+ closedir(dmem);
+ closedir(dir);
+ return -1;
+ }
+ if (nr_memory_ranges >= max_memory_ranges) {
+ if (realloc_memory_ranges() < 0)
+ break;
+ }
+ start = be64_to_cpu(((uint64_t *)buf)[0]);
+ end = start + be64_to_cpu(((uint64_t *)buf)[1]);
+ add_base_memory_range(start, end);
+ fclose(file);
+ }
+ closedir(dmem);
+ }
+ closedir(dir);
+ sort_base_ranges();
+ memory_max = base_memory_range[nr_memory_ranges - 1].end;
+ dbgprintf("get base memory ranges:%d\n", nr_memory_ranges);
+
+ return 0;
+}
+
+/* Sort the exclude ranges in memory */
+static int sort_ranges(void)
+{
+ int i, j;
+ uint64_t tstart, tend;
+ for (i = 0; i < nr_exclude_ranges - 1; i++) {
+ for (j = 0; j < nr_exclude_ranges - i - 1; j++) {
+ if (exclude_range[j].start > exclude_range[j+1].start) {
+ tstart = exclude_range[j].start;
+ tend = exclude_range[j].end;
+ exclude_range[j].start = exclude_range[j+1].start;
+ exclude_range[j].end = exclude_range[j+1].end;
+ exclude_range[j+1].start = tstart;
+ exclude_range[j+1].end = tend;
+ }
+ }
+ }
+ return 0;
+}
+
+void scan_reserved_ranges(unsigned long kexec_flags, int *range_index)
+{
+ char fname[256], buf[16];
+ FILE *file;
+ int i = *range_index;
+
+ strcpy(fname, "/proc/device-tree/reserved-ranges");
+
+ file = fopen(fname, "r");
+ if (file == NULL) {
+ if (errno != ENOENT) {
+ perror(fname);
+ return;
+ }
+ errno = 0;
+ /* File not present. Non PowerKVM system. */
+ return;
+ }
+
+ /*
+ * Each reserved range is an (address,size) pair, 2 cells each,
+ * totalling 4 cells per range.
+ */
+ while (fread(buf, sizeof(uint64_t) * 2, 1, file) == 1) {
+ uint64_t base, size;
+
+ base = be64_to_cpu(((uint64_t *)buf)[0]);
+ size = be64_to_cpu(((uint64_t *)buf)[1]);
+
+ exclude_range[i].start = base;
+ exclude_range[i].end = base + size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ reserve(base, size);
+ }
+ fclose(file);
+ *range_index = i;
+}
+
+/* Return 0 if fname/value valid, -1 otherwise */
+int get_devtree_value(const char *fname, unsigned long long *value)
+{
+ FILE *file;
+ char buf[MAXBYTES];
+ int n = -1;
+
+ if ((file = fopen(fname, "r"))) {
+ n = fread(buf, 1, MAXBYTES, file);
+ fclose(file);
+ }
+
+ if (n == sizeof(uint32_t))
+ *value = ((uint32_t *)buf)[0];
+ else if (n == sizeof(uint64_t))
+ *value = ((uint64_t *)buf)[0];
+ else {
+ fprintf(stderr, "%s node has invalid size: %d\n", fname, n);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Get devtree details and create exclude_range array
+ * Also create usablemem_ranges for KEXEC_ON_CRASH
+ */
+static int get_devtree_details(unsigned long kexec_flags)
+{
+ uint64_t rma_base = -1, base;
+ uint64_t tce_base;
+ unsigned int tce_size;
+ uint64_t htab_base, htab_size;
+ uint64_t kernel_end;
+ uint64_t initrd_start, initrd_end;
+ char buf[MAXBYTES];
+ char device_tree[256] = "/proc/device-tree/";
+ char fname[256];
+ DIR *dir, *cdir;
+ FILE *file;
+ struct dirent *dentry;
+ struct stat fstat;
+ int n, i = 0;
+
+ if ((dir = opendir(device_tree)) == NULL) {
+ perror(device_tree);
+ return -1;
+ }
+
+ scan_reserved_ranges(kexec_flags, &i);
+
+ while ((dentry = readdir(dir)) != NULL) {
+ if (strncmp(dentry->d_name, "chosen", 6) &&
+ strncmp(dentry->d_name, "memory@", 7) &&
+ strcmp(dentry->d_name, "memory") &&
+ strncmp(dentry->d_name, "pci@", 4) &&
+ strncmp(dentry->d_name, "rtas", 4) &&
+ strncmp(dentry->d_name, "ibm,opal", 8))
+ continue;
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ if ((cdir = opendir(fname)) == NULL) {
+ perror(fname);
+ goto error_opendir;
+ }
+
+ if (strncmp(dentry->d_name, "chosen", 6) == 0) {
+ strcat(fname, "/linux,kernel-end");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&kernel_end, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ kernel_end = be64_to_cpu(kernel_end);
+
+ /* Add kernel memory to exclude_range */
+ exclude_range[i].start = 0x0UL;
+ exclude_range[i].end = kernel_end;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ if (kexec_flags & KEXEC_ON_CRASH) {
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,crashkernel-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&crash_base, sizeof(uint64_t), 1,
+ file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ crash_base = be64_to_cpu(crash_base);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,crashkernel-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&crash_size, sizeof(uint64_t), 1,
+ file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ crash_size = be64_to_cpu(crash_size);
+
+ if (crash_base > mem_min)
+ mem_min = crash_base;
+ if (crash_base + crash_size < mem_max)
+ mem_max = crash_base + crash_size;
+
+ add_usable_mem_rgns(0, crash_base + crash_size);
+ reserve(KDUMP_BACKUP_LIMIT, crash_base-KDUMP_BACKUP_LIMIT);
+ }
+ /*
+ * Read the first kernel's memory limit.
+ * If the first kernel is booted with mem= option then
+ * it would export "linux,memory-limit" file
+ * reflecting value for the same.
+ */
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,memory-limit");
+ if ((file = fopen(fname, "r")) == NULL) {
+ if (errno != ENOENT) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ errno = 0;
+ /*
+ * File not present.
+ * fall through. On older kernel this file
+ * is not present.
+ */
+ } else {
+ if (fread(&memory_limit, sizeof(uint64_t), 1,
+ file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ memory_limit = be64_to_cpu(memory_limit);
+ }
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,htab-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ closedir(cdir);
+ if (errno == ENOENT) {
+ /* Non LPAR */
+ errno = 0;
+ continue;
+ }
+ perror(fname);
+ goto error_opendir;
+ }
+ if (fread(&htab_base, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ htab_base = be64_to_cpu(htab_base);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,htab-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&htab_size, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ htab_size = be64_to_cpu(htab_size);
+
+ /* Add htab address to exclude_range - NON-LPAR only */
+ exclude_range[i].start = htab_base;
+ exclude_range[i].end = htab_base + htab_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+
+ /* reserve the initrd_start and end locations. */
+ if (reuse_initrd) {
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,initrd-start");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ /* check for 4 and 8 byte initrd offset sizes */
+ if (stat(fname, &fstat) != 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (fread(&initrd_start, fstat.st_size, 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ initrd_start = be64_to_cpu(initrd_start);
+ fclose(file);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,initrd-end");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ /* check for 4 and 8 byte initrd offset sizes */
+ if (stat(fname, &fstat) != 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ if (fread(&initrd_end, fstat.st_size, 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ initrd_end = be64_to_cpu(initrd_end);
+ fclose(file);
+
+ /* Add initrd address to exclude_range */
+ exclude_range[i].start = initrd_start;
+ exclude_range[i].end = initrd_end;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ }
+ } /* chosen */
+
+ if (strncmp(dentry->d_name, "rtas", 4) == 0) {
+ strcat(fname, "/linux,rtas-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&rtas_base, sizeof(unsigned int), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ rtas_base = be32_to_cpu(rtas_base);
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/rtas-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&rtas_size, sizeof(unsigned int), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ closedir(cdir);
+ rtas_size = be32_to_cpu(rtas_size);
+ /* Add rtas to exclude_range */
+ exclude_range[i].start = rtas_base;
+ exclude_range[i].end = rtas_base + rtas_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(rtas_base, rtas_size);
+ } /* rtas */
+
+ if (strncmp(dentry->d_name, "ibm,opal", 8) == 0) {
+ strcat(fname, "/opal-base-address");
+ file = fopen(fname, "r");
+ if (file == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&opal_base, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ opal_base = be64_to_cpu(opal_base);
+ fclose(file);
+
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/opal-runtime-size");
+ file = fopen(fname, "r");
+ if (file == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&opal_size, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ closedir(cdir);
+ opal_size = be64_to_cpu(opal_size);
+ /* Add OPAL to exclude_range */
+ exclude_range[i].start = opal_base;
+ exclude_range[i].end = opal_base + opal_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(opal_base, opal_size);
+ } /* ibm,opal */
+
+ if (!strncmp(dentry->d_name, "memory@", 7) ||
+ !strcmp(dentry->d_name, "memory")) {
+ strcat(fname, "/reg");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if ((n = fread(buf, 1, MAXBYTES, file)) < 0) {
+ perror(fname);
+ goto error_openfile;
+ }
+ base = be64_to_cpu(((uint64_t *)buf)[0]);
+ if (base < rma_base) {
+ rma_base = base;
+ rma_top = base + be64_to_cpu(((uint64_t *)buf)[1]);
+ }
+
+ fclose(file);
+ closedir(cdir);
+ } /* memory */
+
+ if (strncmp(dentry->d_name, "pci@", 4) == 0) {
+ strcat(fname, "/linux,tce-base");
+ if ((file = fopen(fname, "r")) == NULL) {
+ closedir(cdir);
+ if (errno == ENOENT) {
+ /* Non LPAR */
+ errno = 0;
+ continue;
+ }
+ perror(fname);
+ goto error_opendir;
+ }
+ if (fread(&tce_base, sizeof(uint64_t), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ tce_base = be64_to_cpu(tce_base);
+ memset(fname, 0, sizeof(fname));
+ strcpy(fname, device_tree);
+ strcat(fname, dentry->d_name);
+ strcat(fname, "/linux,tce-size");
+ if ((file = fopen(fname, "r")) == NULL) {
+ perror(fname);
+ goto error_opencdir;
+ }
+ if (fread(&tce_size, sizeof(unsigned int), 1, file) != 1) {
+ perror(fname);
+ goto error_openfile;
+ }
+ fclose(file);
+ tce_size = be32_to_cpu(tce_size);
+ /* Add tce to exclude_range - NON-LPAR only */
+ exclude_range[i].start = tce_base;
+ exclude_range[i].end = tce_base + tce_size;
+ i++;
+ if (i >= max_memory_ranges)
+ realloc_memory_ranges();
+ if (kexec_flags & KEXEC_ON_CRASH)
+ add_usable_mem_rgns(tce_base, tce_size);
+ closedir(cdir);
+ } /* pci */
+ }
+ closedir(dir);
+
+ nr_exclude_ranges = i;
+
+ sort_ranges();
+
+ int k;
+ for (k = 0; k < i; k++)
+ dbgprintf("exclude_range sorted exclude_range[%d] "
+ "start:%llx, end:%llx\n", k, exclude_range[k].start,
+ exclude_range[k].end);
+
+ return 0;
+
+error_openfile:
+ fclose(file);
+error_opencdir:
+ closedir(cdir);
+error_opendir:
+ closedir(dir);
+ return -1;
+}
+
+/* Setup a sorted list of memory ranges. */
+int setup_memory_ranges(unsigned long kexec_flags)
+{
+ int i, j = 0;
+
+ /* Get the base list of memory ranges from /proc/device-tree/memory
+ * nodes. Build list of ranges to be excluded from valid memory
+ */
+
+ if (get_base_ranges())
+ goto out;
+ if (get_devtree_details(kexec_flags))
+ goto out;
+
+ for (i = 0; i < nr_exclude_ranges; i++) {
+ /* If first exclude range does not start with 0, include the
+ * first hole of valid memory from 0 - exclude_range[0].start
+ */
+ if (i == 0) {
+ if (exclude_range[i].start != 0) {
+ memory_range[j].start = 0;
+ memory_range[j].end = exclude_range[i].start - 1;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ if (j >= max_memory_ranges)
+ realloc_memory_ranges();
+ }
+ } /* i == 0 */
+ /* If the last exclude range does not end at memory_max, include
+ * the last hole of valid memory from exclude_range[last].end -
+ * memory_max
+ */
+ if (i == nr_exclude_ranges - 1) {
+ if (exclude_range[i].end < memory_max) {
+ memory_range[j].start = exclude_range[i].end + 1;
+ memory_range[j].end = memory_max;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ if (j >= max_memory_ranges)
+ realloc_memory_ranges();
+ /* Limit the end to rma_top */
+ if (memory_range[j-1].start >= rma_top) {
+ j--;
+ break;
+ }
+ if ((memory_range[j-1].start < rma_top) &&
+ (memory_range[j-1].end >= rma_top)) {
+ memory_range[j-1].end = rma_top;
+ break;
+ }
+ continue;
+ }
+ } /* i == nr_exclude_ranges - 1 */
+ /* contiguous exclude ranges - skip */
+ if (exclude_range[i+1].start == exclude_range[i].end + 1)
+ continue;
+ memory_range[j].start = exclude_range[i].end + 1;
+ memory_range[j].end = exclude_range[i+1].start - 1;
+ memory_range[j].type = RANGE_RAM;
+ j++;
+ if (j >= max_memory_ranges)
+ realloc_memory_ranges();
+ /* Limit range to rma_top */
+ if (memory_range[j-1].start >= rma_top) {
+ j--;
+ break;
+ }
+ if ((memory_range[j-1].start < rma_top) &&
+ (memory_range[j-1].end >= rma_top)) {
+ memory_range[j-1].end = rma_top;
+ break;
+ }
+ }
+ nr_memory_ranges = j;
+
+ int k;
+ for (k = 0; k < j; k++)
+ dbgprintf("setup_memory_ranges memory_range[%d] "
+ "start:%llx, end:%llx\n", k, memory_range[k].start,
+ memory_range[k].end);
+ return 0;
+
+out:
+ cleanup_memory_ranges();
+ return -1;
+}
+
+/* Return a list of valid memory ranges */
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
+{
+ /* allocate memory_range dynamically */
+ max_memory_ranges = 1;
+
+ if (alloc_memory_ranges())
+ return -1;
+ if (setup_memory_ranges(kexec_flags))
+ return -1;
+
+ /*
+ * copy the memory here, another realloc_memory_ranges might
+ * corrupt the old memory
+ */
+ *range = calloc(sizeof(struct memory_range), nr_memory_ranges);
+ if (*range == NULL)
+ return -1;
+ memmove(*range, memory_range,
+ sizeof(struct memory_range) * nr_memory_ranges);
+
+ *ranges = nr_memory_ranges;
+ dbgprintf("get memory ranges:%d\n", nr_memory_ranges);
+ return 0;
+}
+
+struct file_type file_type[] = {
+ { "elf-ppc64", elf_ppc64_probe, elf_ppc64_load, elf_ppc64_usage },
+};
+int file_types = sizeof(file_type) / sizeof(file_type[0]);
+
+void arch_usage(void)
+{
+ fprintf(stderr, " --elf64-core-headers Prepare core headers in ELF64 format\n");
+ fprintf(stderr, " --dt-no-old-root Do not reuse old kernel root= param.\n" \
+ " while creating flatten device tree.\n");
+}
+
+struct arch_options_t arch_options = {
+ .core_header_type = CORE_TYPE_ELF64,
+};
+
+int arch_process_options(int argc, char **argv)
+{
+ /* We look for all options so getopt_long doesn't start reordering
+ * argv[] before file_type[n].load() gets a look in.
+ */
+ static const struct option options[] = {
+ KEXEC_ALL_OPTIONS
+ { 0, 0, NULL, 0 },
+ };
+ static const char short_options[] = KEXEC_ALL_OPT_STR;
+ int opt;
+
+ opterr = 0; /* Don't complain about unrecognized options here */
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ default:
+ break;
+ case OPT_ELF64_CORE:
+ arch_options.core_header_type = CORE_TYPE_ELF64;
+ break;
+ case OPT_DT_NO_OLD_ROOT:
+ dt_no_old_root = 1;
+ break;
+ }
+ }
+ /* Reset getopt for the next pass; called in other source modules */
+ opterr = 1;
+ optind = 1;
+ return 0;
+}
+
+const struct arch_map_entry arches[] = {
+ /* We are running a 32-bit kexec-tools on 64-bit ppc64.
+ * So pass KEXEC_ARCH_PPC64 here
+ */
+ { "ppc64", KEXEC_ARCH_PPC64 },
+ { "ppc64le", KEXEC_ARCH_PPC64 },
+ { NULL, 0 },
+};
+
+int arch_compat_trampoline(struct kexec_info *UNUSED(info))
+{
+ return 0;
+}
+
+void arch_update_purgatory(struct kexec_info *UNUSED(info))
+{
+}
diff --git a/kexec/arch/ppc64/kexec-ppc64.h b/kexec/arch/ppc64/kexec-ppc64.h
new file mode 100644
index 0000000..434b4bf
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-ppc64.h
@@ -0,0 +1,45 @@
+#ifndef KEXEC_PPC64_H
+#define KEXEC_PPC64_H
+
+#define PATH_LEN 256
+#define MAXBYTES 128
+#define MAX_LINE 160
+#define CORE_TYPE_ELF32 1
+#define CORE_TYPE_ELF64 2
+
+#define BOOT_BLOCK_VERSION 17
+#define BOOT_BLOCK_LAST_COMP_VERSION 17
+#if (BOOT_BLOCK_VERSION < 16)
+# define NEED_STRUCTURE_BLOCK_EXTRA_PAD
+#endif
+#define HAVE_DYNAMIC_MEMORY
+#define NEED_RESERVE_DTB
+
+extern int get_devtree_value(const char *fname, unsigned long long *pvalue);
+
+int setup_memory_ranges(unsigned long kexec_flags);
+
+int elf_ppc64_probe(const char *buf, off_t len);
+int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void elf_ppc64_usage(void);
+
+struct mem_ehdr;
+unsigned long my_r2(const struct mem_ehdr *ehdr);
+
+extern uint64_t initrd_base, initrd_size;
+extern int max_memory_ranges;
+extern unsigned char reuse_initrd;
+
+struct arch_options_t {
+ int core_header_type;
+};
+
+typedef struct mem_rgns {
+ unsigned int size;
+ struct memory_range *ranges;
+} mem_rgns_t;
+
+extern mem_rgns_t usablemem_rgns;
+
+#endif /* KEXEC_PPC64_H */
diff --git a/kexec/arch/ppc64/kexec-zImage-ppc64.c b/kexec/arch/ppc64/kexec-zImage-ppc64.c
new file mode 100644
index 0000000..e946205
--- /dev/null
+++ b/kexec/arch/ppc64/kexec-zImage-ppc64.c
@@ -0,0 +1,184 @@
+/*
+ * kexec: Linux boots Linux
+ *
+ * Copyright (C) 2004 Adam Litke (agl@us.ibm.com)
+ * Copyright (C) 2004 IBM 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 <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <linux/elf.h>
+#include "../../kexec.h"
+
+#define MAX_HEADERS 32
+
+int zImage_ppc64_probe(FILE *file)
+{
+ Elf32_Ehdr elf;
+ int valid;
+
+ if (fseek(file, 0, SEEK_SET) < 0) {
+ fprintf(stderr, "seek error: %s\n",
+ strerror(errno));
+ return -1;
+ }
+ if (fread(&elf, sizeof(Elf32_Ehdr), 1, file) != 1) {
+ fprintf(stderr, "read error: %s\n",
+ strerror(errno));
+ return -1;
+ }
+
+ if (elf.e_machine == EM_PPC64) {
+ fprintf(stderr, "Elf64 not supported\n");
+ return -1;
+ }
+
+ valid = (elf.e_ident[EI_MAG0] == ELFMAG0 &&
+ elf.e_ident[EI_MAG1] == ELFMAG1 &&
+ elf.e_ident[EI_MAG2] == ELFMAG2 &&
+ elf.e_ident[EI_MAG3] == ELFMAG3 &&
+ elf.e_ident[EI_CLASS] == ELFCLASS32 &&
+ elf.e_ident[EI_DATA] == ELFDATA2MSB &&
+ elf.e_type == ET_EXEC &&
+ elf.e_machine == EM_PPC);
+
+ return valid ? 0 : -1;
+}
+
+int zImage_ppc64_load(FILE *file, int UNUSED(argc), char **UNUSED(argv),
+ void **ret_entry, struct kexec_segment **ret_segments,
+ int *ret_nr_segments)
+{
+ Elf32_Ehdr elf;
+ Elf32_Phdr *p, *ph;
+ struct kexec_segment *segment;
+ int i;
+ unsigned long memsize, filesize, offset, load_loc = 0;
+
+ /* Parse command line arguments */
+
+ /* Read in the Elf32 header */
+ if (fseek(file, 0, SEEK_SET) < 0) {
+ perror("seek error:");
+ return -1;
+ }
+ if (fread(&elf, sizeof(Elf32_Ehdr), 1, file) != 1) {
+ perror("read error: ");
+ return -1;
+ }
+ if (elf.e_phnum > MAX_HEADERS) {
+ fprintf(stderr,
+ "Only kernels with %i program headers are supported\n",
+ MAX_HEADERS);
+ return -1;
+ }
+
+ /* Read the section header */
+ ph = (Elf32_Phdr *)malloc(sizeof(Elf32_Phdr) * elf.e_phnum);
+ if (ph == 0) {
+ perror("malloc failed: ");
+ return -1;
+ }
+ if (fseek(file, elf.e_phoff, SEEK_SET) < 0) {
+ perror("seek failed: ");
+ free(ph);
+ return -1;
+ }
+ if (fread(ph, sizeof(Elf32_Phdr) * elf.e_phnum, 1, file) != 1) {
+ perror("read error: ");
+ free(ph);
+ return -1;
+ }
+
+ *ret_segments = malloc(elf.e_phnum * sizeof(struct kexec_segment));
+ if (*ret_segments == 0) {
+ fprintf(stderr, "malloc failed: %s\n",
+ strerror(errno));
+ free(ph);
+ return -1;
+ }
+ segment = ret_segments[0];
+
+ /* Scan through the program header */
+ memsize = filesize = offset = 0;
+ p = ph;
+ for (i = 0; i < elf.e_phnum; ++i, ++p) {
+ if (p->p_type != PT_LOAD || p->p_offset == 0)
+ continue;
+ if (memsize == 0) {
+ offset = p->p_offset;
+ memsize = p->p_memsz;
+ filesize = p->p_filesz;
+ load_loc = p->p_vaddr;
+ } else {
+ memsize = p->p_offset + p->p_memsz - offset;
+ filesize = p->p_offset + p->p_filesz - offset;
+ }
+ }
+ if (memsize == 0) {
+ fprintf(stderr, "Can't find a loadable segment.\n");
+ free(ph);
+ return -1;
+ }
+
+ /* Load program segments */
+ p = ph;
+ segment->buf = malloc(filesize);
+ if (segment->buf == 0) {
+ perror("malloc failed: ");
+ free(ph);
+ return -1;
+ }
+ for (i = 0; i < elf.e_phnum; ++i, ++p) {
+ unsigned long mem_offset;
+ if (p->p_type != PT_LOAD || p->p_offset == 0)
+ continue;
+
+ /* skip to the actual image */
+ if (fseek(file, p->p_offset, SEEK_SET) < 0) {
+ perror("seek error: ");
+ free(ph);
+ return -1;
+ }
+ mem_offset = p->p_vaddr - load_loc;
+ if (fread((void *)segment->buf+mem_offset, p->p_filesz, 1,
+ file) != 1) {
+ perror("read error: ");
+ free(ph);
+ return -1;
+ }
+ }
+ segment->mem = (void *) load_loc;
+ segment->memsz = memsize;
+ segment->bufsz = filesize;
+ *ret_entry = (void *)(uintptr_t)elf.e_entry;
+ *ret_nr_segments = i - 1;
+ free(ph);
+ return 0;
+}
+
+void zImage_ppc64_usage(void)
+{
+ fprintf(stderr, "zImage support is still broken\n");
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 17:20:14 +0000