[PATCH RESEND] kexec/ppc64: use common architecture fs2dt.c file

Laurent Dufour ldufour at linux.vnet.ibm.com
Fri Nov 15 09:55:33 EST 2013


Following the commit 'b3c2962 fs2dt: Add a generic copy of fs2dt' which
introduced a generic fs2dt file, this patch is removing the ppc64
architecture's one.

Tests have been done successfully on Power 7 plateform.

Signed-off-by: Laurent Dufour <ldufour at linux.vnet.ibm.com>
---
 kexec/arch/ppc64/Makefile          |    5 
 kexec/arch/ppc64/crashdump-ppc64.h |    3 
 kexec/arch/ppc64/fs2dt.c           |  738 ------------------------------------
 kexec/arch/ppc64/kexec-elf-ppc64.c |    5 
 kexec/arch/ppc64/kexec-ppc64.h     |   21 -
 5 files changed, 19 insertions(+), 753 deletions(-)
 delete mode 100644 kexec/arch/ppc64/fs2dt.c

diff --git a/kexec/arch/ppc64/Makefile b/kexec/arch/ppc64/Makefile
index 7ed0aa9..9a6e475 100644
--- a/kexec/arch/ppc64/Makefile
+++ b/kexec/arch/ppc64/Makefile
@@ -3,13 +3,16 @@
 #
 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/fs2dt.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_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
+
 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/options.h
diff --git a/kexec/arch/ppc64/crashdump-ppc64.h b/kexec/arch/ppc64/crashdump-ppc64.h
index e9d28c9..001be3a 100644
--- a/kexec/arch/ppc64/crashdump-ppc64.h
+++ b/kexec/arch/ppc64/crashdump-ppc64.h
@@ -1,6 +1,9 @@
 #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);
diff --git a/kexec/arch/ppc64/fs2dt.c b/kexec/arch/ppc64/fs2dt.c
deleted file mode 100644
index 924c7ff..0000000
--- a/kexec/arch/ppc64/fs2dt.c
+++ /dev/null
@@ -1,738 +0,0 @@
-/*
- * fs2dt: creates a flattened device-tree
- *
- * Copyright (C) 2004,2005  Milton D Miller II, IBM Corporation
- * Copyright (C) 2005  R Sharada (sharada at 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.
- */
-
-#define _GNU_SOURCE
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <fcntl.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <stdio.h>
-#include "../../kexec.h"
-#include "kexec-ppc64.h"
-#include "crashdump-ppc64.h"
-
-#define MAXPATH 1024		/* max path name length */
-#define NAMESPACE 16384		/* max bytes for property names */
-#define INIT_TREE_WORDS 65536	/* Initial num words for prop values */
-#define MEMRESERVE 256		/* max number of reserved memory blocks */
-#define MEM_RANGE_CHUNK_SZ 2048 /* Initial num dwords for mem ranges */
-
-static char pathname[MAXPATH], *pathstart;
-static char propnames[NAMESPACE] = { 0 };
-static unsigned *dt_base, *dt;
-static unsigned int dt_cur_size;
-static unsigned long long mem_rsrv[2*MEMRESERVE] = { 0, 0 };
-
-static int crash_param = 0;
-static char local_cmdline[COMMAND_LINE_SIZE] = { "" };
-extern mem_rgns_t usablemem_rgns;
-static struct bootblock bb[1];
-extern int my_debug;
-
-/* Before we add something to the dt, reserve N words using this.
- * If there isn't enough room, it's realloced -- and you don't overflow and
- * splat bits of your heap. 
- */
-void dt_reserve(unsigned **dt_ptr, unsigned words)
-{
-	unsigned int sz = INIT_TREE_WORDS;
-
-	if (sz < words)
-		sz = words;
-
-	if (((*dt_ptr - dt_base) + words) >= dt_cur_size) {
-		int offset;
-		unsigned int new_size = dt_cur_size + sz;
-		unsigned *new_dt = realloc(dt_base, new_size*4);
-
-		if (!new_dt)
-			die("unrecoverable error: Can't realloc %d bytes for "
-			    "device tree\n", new_size*4);
-		offset = *dt_ptr - dt_base;
-		dt_base = new_dt;
-		dt_cur_size = new_size;
-		*dt_ptr = dt_base + offset;
-		memset(*dt_ptr, 0, (new_size - offset)*4);
-	}
-}
-
-void reserve(unsigned long long where, unsigned long long length)
-{
-	size_t offset;
-
-	for (offset = 0; mem_rsrv[offset + 1]; offset += 2)
-		;
-
-	if (offset + 4 >= 2 * MEMRESERVE)
-		die("unrecoverable error: exhasuted reservation meta data\n");
-
-	mem_rsrv[offset] = where;
-	mem_rsrv[offset + 1] = length;
-	mem_rsrv[offset + 3] = 0;  /* N.B: don't care about offset + 2 */
-}
-
-/* look for properties we need to reserve memory space for */
-static void checkprop(char *name, unsigned *data, int len)
-{
-	static unsigned long long base, size, end;
-
-	if ((data == NULL) && (base || size || end))
-		die("unrecoverable error: no property data");
-	else if (!strcmp(name, "linux,rtas-base"))
-		base = *data;
-	else if (!strcmp(name, "linux,tce-base"))
-		base = *(unsigned long long *) data;
-	else if (!strcmp(name, "rtas-size") ||
-			!strcmp(name, "linux,tce-size"))
-		size = *data;
-	else if (reuse_initrd && !strcmp(name, "linux,initrd-start"))
-		if (len == 8)
-			base = *(unsigned long long *) data;
-		else
-			base = *data;
-	else if (reuse_initrd && !strcmp(name, "linux,initrd-end"))
-		end = *(unsigned long long *) data;
-
-	if (size && end)
-		die("unrecoverable error: size and end set at same time\n");
-	if (base && size) {
-		reserve(base, size);
-		base = size = 0;
-	}
-	if (base && end) {
-		reserve(base, end-base);
-		base = end = 0;
-	}
-}
-
-/*
- * return the property index for a property name, creating a new one
- * if needed.
- */
-static unsigned propnum(const char *name)
-{
-	unsigned offset = 0;
-
-	while(propnames[offset])
-		if (strcmp(name, propnames+offset))
-			offset += strlen(propnames+offset)+1;
-		else
-			return offset;
-
-	if (NAMESPACE - offset < strlen(name) + 1)
-		die("unrecoverable error: propnames overrun\n");
-
-	strcpy(propnames+offset, name);
-
-	return offset;
-}
-
-static void add_dyn_reconf_usable_mem_property(int fd)
-{
-	char fname[MAXPATH], *bname;
-	uint64_t buf[32];
-	uint64_t *ranges;
-	int ranges_size = MEM_RANGE_CHUNK_SZ;
-	uint64_t base, end, loc_base, loc_end;
-	size_t i, rngs_cnt, range;
-	int rlen = 0;
-	int tmp_indx;
-
-	strcpy(fname, pathname);
-	bname = strrchr(fname, '/');
-	bname[0] = '\0';
-	bname = strrchr(fname, '/');
-	if (strncmp(bname, "/ibm,dynamic-reconfiguration-memory", 36))
-		return;
-
-	if (lseek(fd, 4, SEEK_SET) < 0)
-		die("unrecoverable error: error seeking in \"%s\": %s\n",
-			pathname, strerror(errno));
-
-	ranges = malloc(ranges_size*8);
-	if (!ranges)
-		die("unrecoverable error: can't alloc %d bytes for ranges.\n",
-		    ranges_size*8);
-
-	rlen = 0;
-	for (i = 0; i < num_of_lmbs; i++) {
-		if (read(fd, buf, 24) < 0)
-			die("unrecoverable error: error reading \"%s\": %s\n",
-				pathname, strerror(errno));
-
-		base = (uint64_t) buf[0];
-		end = base + lmb_size;
-		if (~0ULL - base < end)
-			die("unrecoverable error: mem property overflow\n");
-
-		tmp_indx = rlen++;
-
-		rngs_cnt = 0;
-		for (range = 0; range < usablemem_rgns.size; range++) {
-			int add = 0;
-			loc_base = usablemem_rgns.ranges[range].start;
-			loc_end = usablemem_rgns.ranges[range].end;
-			if (loc_base >= base && loc_end <= end) {
-				add = 1;
-			} else if (base < loc_end && end > loc_base) {
-				if (loc_base < base)
-					loc_base = base;
-				if (loc_end > end)
-					loc_end = end;
-				add = 1;
-			}
-
-			if (add) {
-				if (rlen >= (ranges_size-2)) {
-					ranges_size += MEM_RANGE_CHUNK_SZ;
-					ranges = realloc(ranges, ranges_size*8);
-					if (!ranges)
-						die("unrecoverable error: can't"
-						    " realloc %d bytes for"
-						    " ranges.\n",
-						    ranges_size*8);
-				}
-				ranges[rlen++] = loc_base;
-				ranges[rlen++] = loc_end - loc_base;
-				rngs_cnt++;
-			}
-		}
-		if (rngs_cnt == 0) {
-			/* We still need to add a counter for every LMB because
-			 * the kernel parsing code is dumb.  We just have
-			 * a zero in this case, with no following base/len.
-			 */
-			ranges[tmp_indx] = 0;
-			/* rlen is already just tmp_indx+1 as we didn't write
-			 * anything.  Check array size here, as we'll probably
-			 * go on for a while writing zeros now.
-			 */
-			if (rlen >= (ranges_size-1)) {
-				ranges_size += MEM_RANGE_CHUNK_SZ;
-				ranges = realloc(ranges, ranges_size*8);
-				if (!ranges)
-					die("unrecoverable error: can't"
-					    " realloc %d bytes for"
-					    " ranges.\n",
-					    ranges_size*8);
-			}
-		} else {
-			/* Store the count of (base, size) duple */
-			ranges[tmp_indx] = rngs_cnt;
-		}
-	}
-		
-	rlen = rlen * sizeof(uint64_t);
-	/*
-	 * Add linux,drconf-usable-memory property.
-	 */
-	dt_reserve(&dt, 4+((rlen + 3)/4));
-	*dt++ = 3;
-	*dt++ = rlen;
-	*dt++ = propnum("linux,drconf-usable-memory");
-	if ((rlen >= 8) && ((unsigned long)dt & 0x4))
-		dt++;
-	memcpy(dt, ranges, rlen);
-	free(ranges);
-	dt += (rlen + 3)/4;
-}
-
-static void add_usable_mem_property(int fd, size_t len)
-{
-	char fname[MAXPATH], *bname;
-	uint64_t buf[2];
-	uint64_t *ranges;
-	int ranges_size = MEM_RANGE_CHUNK_SZ;
-	uint64_t base, end, loc_base, loc_end;
-	size_t range;
-	int rlen = 0;
-	ssize_t slen;
-
-	strcpy(fname, pathname);
-	bname = strrchr(fname,'/');
-	bname[0] = '\0';
-	bname = strrchr(fname,'/');
-	if (strncmp(bname, "/memory@", 8))
-		return;
-
-	if (len < 2 * sizeof(uint64_t))
-		die("unrecoverable error: not enough data for mem property\n");
-	slen = 2 * sizeof(uint64_t);
-
-	if (lseek(fd, 0, SEEK_SET) < 0)
-		die("unrecoverable error: error seeking in \"%s\": %s\n",
-		    pathname, strerror(errno));
-	if (read(fd, buf, slen) != slen)
-		die("unrecoverable error: error reading \"%s\": %s\n",
-		    pathname, strerror(errno));
-
-	if (~0ULL - buf[0] < buf[1])
-		die("unrecoverable error: mem property overflow\n");
-	base = buf[0];
-	end = base + buf[1];
-
-	ranges = malloc(ranges_size*8);
-	if (!ranges)
-		die("unrecoverable error: can't alloc %d bytes for ranges.\n",
-		    ranges_size*8);
-
-	for (range = 0; range < usablemem_rgns.size; range++) {
-		int add = 0;
-		loc_base = usablemem_rgns.ranges[range].start;
-		loc_end = usablemem_rgns.ranges[range].end;
-		if (loc_base >= base && loc_end <= end) {
-			add = 1;
-		} else if (base < loc_end && end > loc_base) {
-			if (loc_base < base)
-				loc_base = base;
-			if (loc_end > end)
-				loc_end = end;
-			add = 1;
-		}
-		if (add) {
-			if (rlen >= (ranges_size-2)) {
-				ranges_size += MEM_RANGE_CHUNK_SZ;
-				ranges = realloc(ranges, ranges_size*8);
-				if (!ranges)
-					die("unrecoverable error: can't realloc"
-					    "%d bytes for ranges.\n",
-					    ranges_size*8);
-			}
-			ranges[rlen++] = loc_base;
-			ranges[rlen++] = loc_end - loc_base;
-		}
-	}
-
-	if (!rlen) {
-		/*
-		 * User did not pass any ranges for thsi region. Hence, write
-		 * (0,0) duple in linux,usable-memory property such that
-		 * this region will be ignored.
-		 */
-		ranges[rlen++] = 0;
-		ranges[rlen++] = 0;
-	}
-
-	rlen = rlen * sizeof(uint64_t);
-	/*
-	 * No add linux,usable-memory property.
-	 */
-	dt_reserve(&dt, 4+((rlen + 3)/4));
-	*dt++ = 3;
-	*dt++ = rlen;
-	*dt++ = propnum("linux,usable-memory");
-	if ((rlen >= 8) && ((unsigned long)dt & 0x4))
-		dt++;
-	memcpy(dt, ranges, rlen);
-	free(ranges);
-	dt += (rlen + 3)/4;
-}
-
-/* put all properties (files) in the property structure */
-static void putprops(char *fn, struct dirent **nlist, int numlist)
-{
-	struct dirent *dp;
-	int i = 0, fd;
-	size_t len;
-	ssize_t slen;
-	struct stat statbuf;
-
-	for (i = 0; i < numlist; i++) {
-		dp = nlist[i];
-		strcpy(fn, dp->d_name);
-
-		if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
-                        continue;
-
-		if (lstat(pathname, &statbuf))
-			die("unrecoverable error: could not stat \"%s\": %s\n",
-			    pathname, strerror(errno));
-
-		if (!crash_param && !strcmp(fn,"linux,crashkernel-base"))
-			continue;
-
-		if (!crash_param && !strcmp(fn,"linux,crashkernel-size"))
-			continue;
-
-		/*
-		 * This property will be created for each node during kexec
-		 * boot. So, ignore it.
-		 */
-		if (!strcmp(dp->d_name, "linux,pci-domain") ||
-			!strcmp(dp->d_name, "linux,htab-base") ||
-			!strcmp(dp->d_name, "linux,htab-size") ||
-			!strcmp(dp->d_name, "linux,kernel-end"))
-				continue;
-
-		/* This property will be created/modified later in putnode()
-		 * So ignore it, unless we are reusing the initrd.
-		 */
-		if ((!strcmp(dp->d_name, "linux,initrd-start") ||
-		     !strcmp(dp->d_name, "linux,initrd-end")) &&
-		    !reuse_initrd)
-				continue;
-
-		/* This property will be created later in putnode() So
-		 * ignore it now.
-		 */
-		if (!strcmp(dp->d_name, "bootargs"))
-			continue;
-
-		if (! S_ISREG(statbuf.st_mode))
-			continue;
-
-		len = statbuf.st_size;
-
-		dt_reserve(&dt, 4+((len + 3)/4));
-		*dt++ = 3;
-		*dt++ = len;
-		*dt++ = propnum(fn);
-
-		if ((len >= 8) && ((unsigned long)dt & 0x4))
-			dt++;
-
-		fd = open(pathname, O_RDONLY);
-		if (fd == -1)
-			die("unrecoverable error: could not open \"%s\": %s\n",
-			    pathname, strerror(errno));
-
-		slen = read(fd, dt, len);
-		if (slen < 0)
-			die("unrecoverable error: could not read \"%s\": %s\n",
-			    pathname, strerror(errno));
-		if ((size_t)slen != len)
-			die("unrecoverable error: short read from\"%s\"\n",
-			    pathname);
-
-		checkprop(fn, dt, len);
-
-		dt += (len + 3)/4;
-		if (!strcmp(dp->d_name, "reg") && usablemem_rgns.size)
-			add_usable_mem_property(fd, len);
-		if (!strcmp(dp->d_name, "ibm,dynamic-memory") &&
-					usablemem_rgns.size)
-			add_dyn_reconf_usable_mem_property(fd);
-
-		close(fd);
-	}
-
-	fn[0] = '\0';
-	checkprop(pathname, NULL, 0);
-}
-
-/*
- * Compare function used to sort the device-tree directories
- * This function will be passed to scandir.
- */
-static int comparefunc(const struct dirent **dentry1,
-		       const struct dirent **dentry2)
-{
-	char *str1 = (*(struct dirent **)dentry1)->d_name;
-	char *str2 = (*(struct dirent **)dentry2)->d_name;
-
-	/*
-	 * strcmp scans from left to right and fails to idetify for some
-	 * strings such as memory at 10000000 and memory at f000000.
-	 * Therefore, we get the wrong sorted order like memory at 10000000 and
-	 * memory at f000000.
-	 */
-	if (strchr(str1, '@') && strchr(str2, '@') &&
-		(strlen(str1) > strlen(str2)))
-		return 1;
-
-	return strcmp(str1, str2);
-}
-
-/*
- * put a node (directory) in the property structure.  first properties
- * then children.
- */
-static void putnode(void)
-{
-	char *dn;
-	struct dirent *dp;
-	char *basename;
-	struct dirent **namelist;
-	int numlist, i;
-	struct stat statbuf;
-	int plen;
-
-	plen = *pathstart ? strlen(pathstart) : 1;
-	/* Reserve space for string packed to words; e.g. string length 10 
-	 * occupies 3 words, length 12 occupies 4 (for terminating \0s).  
-	 * So round up & include the \0:
-	 */
-	dt_reserve(&dt, 1+((plen + 4)/4));
-	*dt++ = 1;
-	strcpy((void *)dt, *pathstart ? pathstart : "/");
-	dt += ((plen + 4)/4);
-
-	numlist = scandir(pathname, &namelist, 0, comparefunc);
-	if (numlist < 0)
-		die("unrecoverable error: could not scan \"%s\": %s\n",
-		    pathname, strerror(errno));
-	if (numlist == 0)
-		die("unrecoverable error: no directory entries in \"%s\"",
-		    pathname);
-
-	basename = strrchr(pathname,'/');
-
-	strncat(pathname, "/", MAXPATH - strlen(pathname) - 1);
-	dn = pathname + strlen(pathname);
-
-	putprops(dn, namelist, numlist);
-
-	/* Add initrd entries to the second kernel */
-	if (initrd_base && !strcmp(basename,"/chosen/")) {
-		int len = 8;
-		unsigned long long initrd_end;
-
-		dt_reserve(&dt, 12); /* both props, of 6 words ea. */
-		*dt++ = 3;
-		*dt++ = len;
-		*dt++ = propnum("linux,initrd-start");
-
-		if ((len >= 8) && ((unsigned long)dt & 0x4))
-			dt++;
-
-		memcpy(dt,&initrd_base,len);
-		dt += (len + 3)/4;
-
-		len = 8;
-		*dt++ = 3;
-		*dt++ = len;
-		*dt++ = propnum("linux,initrd-end");
-
-		initrd_end = initrd_base + initrd_size;
-		if ((len >= 8) && ((unsigned long)dt & 0x4))
-			dt++;
-
-		memcpy(dt,&initrd_end,len);
-		dt += (len + 3)/4;
-
-		reserve(initrd_base, initrd_size);
-	}
-
-	/* Add cmdline to the second kernel.  Check to see if the new
-	 * cmdline has a root=.  If not, use the old root= cmdline.  */
-	if (!strcmp(basename,"/chosen/")) {
-		size_t cmd_len = 0;
-		char *param = NULL;
-		char filename[MAXPATH];
-		char *buff;
-		int fd;
-
-		cmd_len = strlen(local_cmdline);
-		if (cmd_len != 0) {
-			param = strstr(local_cmdline, "crashkernel=");
-			if (param)
-				crash_param = 1;
-			/* does the new cmdline have a root= ? ... */
-			param = strstr(local_cmdline, "root=");
-		}
-
-		/* ... if not, grab root= from the old command line */
-		if (!param) {
-			FILE *fp;
-			char *last_cmdline = NULL;
-			char *old_param;
-
-			strcpy(filename, pathname);
-			strncat(filename, "bootargs", MAXPATH - strlen(filename) - 1);
-			fp = fopen(filename, "r");
-			if (fp) {
-				if (getline(&last_cmdline, &cmd_len, fp) == -1)
-					die("unable to read %s\n", filename);
-
-				param = strstr(last_cmdline, "root=");
-				if (param) {
-					old_param = strtok(param, " ");
-					if (cmd_len != 0)
-						strcat(local_cmdline, " ");
-					strcat(local_cmdline, old_param);
-				}
-			}
-			if (last_cmdline)
-				free(last_cmdline);
-		}
-		strcat(local_cmdline, " ");
-		cmd_len = strlen(local_cmdline);
-		cmd_len = cmd_len + 1;
-
-		/* add new bootargs */
-		dt_reserve(&dt, 4+((cmd_len+3)/4));
-		*dt++ = 3;
-		*dt++ = cmd_len;
-		*dt++ = propnum("bootargs");
-		if ((cmd_len >= 8) && ((unsigned long)dt & 0x4))
-			dt++;
-		memcpy(dt, local_cmdline,cmd_len);
-		dt += (cmd_len + 3)/4;
-
-		fprintf(stderr, "Modified cmdline:%s\n", local_cmdline);
-
-		/*
-		 * Determine the platform type/stdout type, so that purgatory
-		 * code can print 'I'm in purgatory' message. Currently only
-		 * pseries/hvcterminal is supported.
-		 */
-		strcpy(filename, pathname);
-		strncat(filename, "linux,stdout-path", MAXPATH - strlen(filename) - 1);
-		fd = open(filename, O_RDONLY);
-		if (fd == -1) {
-			printf("Unable to find %s, printing from purgatory is disabled\n", filename);
-			goto no_debug;
-		}
-		if (fstat(fd, &statbuf)) {
-			printf("Unable to stat %s, printing from purgatory is disabled\n", filename);
-			close(fd);
-			goto no_debug;
-
-		}
-
-		buff = malloc(statbuf.st_size);
-		if (!buff) {
-			printf("Can not allocate memory for buff\n");
-			close(fd);
-			goto no_debug;
-		}
-		read(fd, buff, statbuf.st_size);
-		close(fd);
-		strncpy(filename, "/proc/device-tree/", MAXPATH);
-		strncat(filename, buff, MAXPATH - strlen(filename) - 1);
-		strncat(filename, "/compatible", MAXPATH - strlen(filename) - 1);
-		fd = open(filename, O_RDONLY);
-		if (fd == -1) {
-			printf("Unable to find %s printing from purgatory is disabled\n", filename);
-			goto no_debug;
-		}
-		if (fstat(fd, &statbuf)) {
-			printf("Unable to stat %s printing from purgatory is disabled\n", filename);
-			close(fd);
-			goto no_debug;
-		}
-		buff = realloc(buff, statbuf.st_size);
-		if (!buff) {
-			printf("Can not allocate memory for buff\n");
-			close(fd);
-			goto no_debug;
-		}
-		read(fd, buff, statbuf.st_size);
-		if (!strcmp(buff, "hvterm1") || !strcmp(buff, "hvterm-protocol"))
-			my_debug = 1;
-		close(fd);
-		free(buff);
-	}
-
-no_debug:
-	for (i=0; i < numlist; i++) {
-		dp = namelist[i];
-		strcpy(dn, dp->d_name);
-		free(namelist[i]);
-
-		if (!strcmp(dn, ".") || !strcmp(dn, ".."))
-			continue;
-
-		if (lstat(pathname, &statbuf))
-			die("unrecoverable error: could not stat \"%s\": %s\n",
-			    pathname, strerror(errno));
-
-		if (S_ISDIR(statbuf.st_mode))
-			putnode();
-	}
-
-	dt_reserve(&dt, 1);
-	*dt++ = 2;
-	dn[-1] = '\0';
-	free(namelist);
-}
-
-int create_flatten_tree(char **bufp, off_t *sizep, char *cmdline)
-{
-	unsigned long len;
-	unsigned long tlen;
-	char *buf;
-	unsigned long me;
-
-	me = 0;
-
-	strcpy(pathname, "/proc/device-tree/");
-
-	pathstart = pathname + strlen(pathname);
-
-	dt_cur_size = INIT_TREE_WORDS;
-	dt_base = malloc(dt_cur_size*4);
-	if (!dt_base) {
-		die("Can't malloc %d bytes for dt struct!\n", dt_cur_size*4);
-	}
-	memset(dt_base, 0, dt_cur_size*4);
-
-	dt = dt_base;
-
-	if (cmdline)
-		strcpy(local_cmdline, cmdline);
-
-	putnode();
-	dt_reserve(&dt, 1);
-	*dt++ = 9;
-
-	len = _ALIGN(sizeof(bb[0]), 8);
-
-	bb->off_mem_rsvmap = len;
-
-	for (len = 1; mem_rsrv[len]; len += 2)
-		;
-	len+= 3;
-	len *= sizeof(mem_rsrv[0]);
-
-	bb->off_dt_struct = bb->off_mem_rsvmap + len;
-
-	len = dt - dt_base;
-	len *= sizeof(unsigned);
-	bb->off_dt_strings = bb->off_dt_struct + len;
-
-	len = _ALIGN(propnum(""), 4);
-	bb->totalsize = bb->off_dt_strings + len;
-
-	bb->magic = 0xd00dfeed;
-	bb->version = 2;
-	bb->last_comp_version = 2;
-
-	reserve(me, bb->totalsize); /* patched later in kexec_load */
-
-	buf = malloc(bb->totalsize);
-	*bufp = buf;
-	memcpy(buf, bb, bb->off_mem_rsvmap);
-	tlen = bb->off_mem_rsvmap;
-	memcpy(buf+tlen, mem_rsrv, bb->off_dt_struct - bb->off_mem_rsvmap);
-	tlen = tlen + (bb->off_dt_struct - bb->off_mem_rsvmap);
-	memcpy(buf+tlen, dt_base,  bb->off_dt_strings - bb->off_dt_struct);
-	tlen = tlen +  (bb->off_dt_strings - bb->off_dt_struct);
-	memcpy(buf+tlen, propnames,  bb->totalsize - bb->off_dt_strings);
-	tlen = tlen + bb->totalsize - bb->off_dt_strings;
-	*sizep = tlen;
-	free(dt_base);
-	return 0;
-}
diff --git a/kexec/arch/ppc64/kexec-elf-ppc64.c b/kexec/arch/ppc64/kexec-elf-ppc64.c
index cc0531d..3550fc1 100644
--- a/kexec/arch/ppc64/kexec-elf-ppc64.c
+++ b/kexec/arch/ppc64/kexec-elf-ppc64.c
@@ -35,6 +35,7 @@
 #include "../../kexec-elf.h"
 #include "../../kexec-syscall.h"
 #include "kexec-ppc64.h"
+#include "../../fs2dt.h"
 #include "crashdump-ppc64.h"
 #include <arch/options.h>
 
@@ -82,8 +83,10 @@ int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
 	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 i;
 	int result, opt;
 	uint64_t my_kernel, my_dt_offset;
@@ -228,6 +231,7 @@ int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
 	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
@@ -240,6 +244,7 @@ int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len,
 	*rsvmap_ptr = my_dt_offset;
 	rsvmap_ptr++;
 	*rsvmap_ptr = bb_ptr->totalsize;
+#endif
 
 	/* Set kernel */
 	elf_rel_set_symbol(&info->rhdr, "kernel", &my_kernel, sizeof(my_kernel));
diff --git a/kexec/arch/ppc64/kexec-ppc64.h b/kexec/arch/ppc64/kexec-ppc64.h
index 920ac46..9a0aecf 100644
--- a/kexec/arch/ppc64/kexec-ppc64.h
+++ b/kexec/arch/ppc64/kexec-ppc64.h
@@ -6,33 +6,26 @@
 #define CORE_TYPE_ELF32 1
 #define CORE_TYPE_ELF64 2
 
+#define BOOT_BLOCK_VERSION 2
+#define BOOT_BLOCK_LAST_COMP_VERSION 2
+#define NEED_STRUCTURE_BLOCK_EXTRA_PAD
+#define HAVE_DYNAMIC_MEMORY
+#define NEED_RESERVE_DTB
+
 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);
-void reserve(unsigned long long where, unsigned long long length);
 
-int create_flatten_tree(char **, off_t *, char *);
+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;
 
-/* boot block version 2 as defined by the linux kernel */
-struct bootblock {
-	unsigned magic,
-		totalsize,
-		off_dt_struct,
-		off_dt_strings,
-		off_mem_rsvmap,
-		version,
-		last_comp_version,
-		boot_physid;
-};
-
 struct arch_options_t {
 	int core_header_type;
 };




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