diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 92c2f4e..a32a5a2 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -103,6 +103,12 @@ static boot_os_fn do_bootm_artos;
 ulong load_addr = CFG_LOAD_ADDR;	/* Default Load Address */
 static bootm_headers_t images;		/* pointers to os/initrd/fdt images */
 
+void __board_lmb_reserve(struct lmb *lmb)
+{
+	/* please define platform specific board_lmb_reserve() */
+}
+void board_lmb_reserve(struct lmb *lmb) __attribute__((weak, alias("__board_lmb_reserve")));
+
 
 /*******************************************************************/
 /* bootm - boot application image from image in memory */
@@ -134,6 +140,8 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	lmb_add(&lmb, 0, gd->bd->bi_memsize);
 #endif
 
+	board_lmb_reserve(&lmb);
+
 	/* get kernel image header, start address and length */
 	os_hdr = get_kernel (cmdtp, flag, argc, argv,
 			&images, &os_data, &os_len);
diff --git a/common/image.c b/common/image.c
index 4f2ff9c..0b71811 100644
--- a/common/image.c
+++ b/common/image.c
@@ -704,10 +704,9 @@ int get_ramdisk (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
 /**
  * ramdisk_high - relocate init ramdisk
+ * @lmb: pointer to lmb handle, will be used for memory mgmt
  * @rd_data: ramdisk data start address
  * @rd_len: ramdisk data length
- * @sp_limit: stack pointer limit (including BOOTMAPSZ)
- * @sp: current stack pointer
  * @initrd_start: pointer to a ulong variable, will hold final init ramdisk
  *      start address (after possible relocation)
  * @initrd_end: pointer to a ulong variable, will hold final init ramdisk
@@ -720,16 +719,16 @@ int get_ramdisk (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
  *     - initrd_start and initrd_end are set to final (after relocation) ramdisk
  *     start/end addresses if ramdisk image start and len were provided
  *     otherwise set initrd_start and initrd_end set to zeros
- *     - returns new allc_current, next free address below BOOTMAPSZ
+ *     - returns:
+ *        0 - success
+ *       -1 - failure
  */
-ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len,
-		ulong sp_limit, ulong sp,
-		ulong *initrd_start, ulong *initrd_end)
+int ramdisk_high (struct lmb *lmb, ulong rd_data, ulong rd_len,
+		  ulong *initrd_start, ulong *initrd_end)
 {
 	char	*s;
 	ulong	initrd_high;
 	int	initrd_copy_to_ram = 1;
-	ulong	new_alloc_current = alloc_current;
 
 	if ((s = getenv ("initrd_high")) != NULL) {
 		/* a value of "no" or a similar string will act like 0,
@@ -743,12 +742,6 @@ ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len,
 		initrd_high = ~0;
 	}
 
-#ifdef CONFIG_LOGBUFFER
-	/* Prevent initrd from overwriting logbuffer */
-	if (initrd_high < (gd->bd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD))
-	    initrd_high = gd->bd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD;
-	debug ("## Logbuffer at 0x%08lx ", gd->bd->bi_memsize - LOGBUFF_LEN);
-#endif
 	debug ("## initrd_high = 0x%08lx, copy_to_ram = %d\n",
 			initrd_high, initrd_copy_to_ram);
 
@@ -757,40 +750,17 @@ ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len,
 			debug ("   in-place initrd\n");
 			*initrd_start = rd_data;
 			*initrd_end = rd_data + rd_len;
+			lmb_reserve(lmb, rd_data, rd_len);
 		} else {
-			new_alloc_current = alloc_current - rd_len;
-			*initrd_start  = new_alloc_current;
-			*initrd_start &= ~(4096 - 1);	/* align on page */
-
-			if (initrd_high) {
-				ulong nsp;
-
-				/*
-				 * the inital ramdisk does not need to be within
-				 * CFG_BOOTMAPSZ as it is not accessed until after
-				 * the mm system is initialised.
-				 *
-				 * do the stack bottom calculation again and see if
-				 * the initrd will fit just below the monitor stack
-				 * bottom without overwriting the area allocated
-				 * for command line args and board info.
-				 */
-				nsp = sp;
-				nsp -= 2048;		/* just to be sure */
-				nsp &= ~0xF;
-
-				if (nsp > initrd_high)	/* limit as specified */
-					nsp = initrd_high;
-
-				nsp -= rd_len;
-				nsp &= ~(4096 - 1);	/* align on page */
-
-				if (nsp >= sp_limit) {
-					*initrd_start = nsp;
-					new_alloc_current = alloc_current;
-				}
+			if (initrd_high)
+				*initrd_start = lmb_alloc_base(lmb, rd_len, 0x1000, initrd_high);
+			else
+				*initrd_start = lmb_alloc(lmb, rd_len, 0x1000);
+
+			if (*initrd_start == 0) {
+				puts("ramdisk - allocation error\n");
+				goto error;
 			}
-
 			show_boot_progress (12);
 
 			*initrd_end = *initrd_start + rd_len;
@@ -808,56 +778,40 @@ ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len,
 	}
 	debug ("   ramdisk load start = 0x%08lx, ramdisk load end = 0x%08lx\n",
 			*initrd_start, *initrd_end);
+	return 0;
 
-	return new_alloc_current;
-}
-
-/**
- * get_boot_sp_limit - calculate stack pointer limit
- * @sp: current stack pointer
- *
- * get_boot_sp_limit() takes current stack pointer adrress and calculates
- * stack pointer limit, below which kernel boot data (cmdline, board info,
- * etc.) will be allocated.
- *
- * returns:
- *     stack pointer limit
- */
-ulong get_boot_sp_limit(ulong sp)
-{
-	ulong sp_limit = sp;
-
-	sp_limit -= 2048;	/* just to be sure */
-
-	/* make sure sp_limit is within kernel mapped space */
-	if (sp_limit > CFG_BOOTMAPSZ)
-		sp_limit = CFG_BOOTMAPSZ;
-	sp_limit &= ~0xF;
-
-	return sp_limit;
+error:
+	return -1;
 }
 
 /**
  * get_boot_cmdline - allocate and initialize kernel cmdline
- * @alloc_current: current boot allocation address (counting down
- *      from sp_limit)
+ * @lmb: pointer to lmb handle, will be used for memory mgmt
  * @cmd_start: pointer to a ulong variable, will hold cmdline start
  * @cmd_end: pointer to a ulong variable, will hold cmdline end
+ * @bootmap_base: ulong variable, holds offset in physical memory to
+ * base of bootmap
  *
  * get_boot_cmdline() allocates space for kernel command line below
- * provided alloc_current address. If "bootargs" U-boot environemnt
+ * BOOTMAPSZ + bootmap_base address. If "bootargs" U-boot environemnt
  * variable is present its contents is copied to allocated kernel
  * command line.
  *
  * returns:
- *     alloc_current after cmdline allocation
+ *      0 - success
+ *     -1 - failure
  */
-ulong get_boot_cmdline (ulong alloc_current, ulong *cmd_start, ulong *cmd_end)
+int get_boot_cmdline (struct lmb *lmb, ulong *cmd_start, ulong *cmd_end,
+			ulong bootmap_base)
 {
 	char *cmdline;
 	char *s;
 
-	cmdline = (char *)((alloc_current - CFG_BARGSIZE) & ~0xF);
+	cmdline = (char *)lmb_alloc_base(lmb, CFG_BARGSIZE, 0xf,
+					 CFG_BOOTMAPSZ + bootmap_base);
+
+	if (cmdline == NULL)
+		return -1;
 
 	if ((s = getenv("bootargs")) == NULL)
 		s = "";
@@ -869,25 +823,31 @@ ulong get_boot_cmdline (ulong alloc_current, ulong *cmd_start, ulong *cmd_end)
 
 	debug ("## cmdline at 0x%08lx ... 0x%08lx\n", *cmd_start, *cmd_end);
 
-	return (ulong)cmdline;
+	return 0;
 }
 
 /**
  * get_boot_kbd - allocate and initialize kernel copy of board info
- * @alloc_current: current boot allocation address (counting down
- *      from sp_limit)
+ * @lmb: pointer to lmb handle, will be used for memory mgmt
  * @kbd: double pointer to board info data
+ * @bootmap_base: ulong variable, holds offset in physical memory to
+ * base of bootmap
  *
- * get_boot_kbd() - allocates space for kernel copy of board info data.
- * Space is allocated below provided alloc_current address and kernel
- * board info is initialized with the current u-boot board info data.
+ * get_boot_kbd() allocates space for kernel copy of board info data below
+ * BOOTMAPSZ + bootmap_base address and kernel board info is initialized with
+ * the current u-boot board info data.
  *
  * returns:
- *     alloc_current after kbd allocation
+ *      0 - success
+ *     -1 - failure
  */
-ulong get_boot_kbd (ulong alloc_current, bd_t **kbd)
+int get_boot_kbd (struct lmb *lmb, bd_t **kbd, ulong bootmap_base)
 {
-	*kbd = (bd_t *) (((ulong)alloc_current - sizeof(bd_t)) & ~0xF);
+	*kbd = (bd_t *)lmb_alloc_base(lmb, sizeof(bd_t), 0xf,
+				      CFG_BOOTMAPSZ + bootmap_base);
+	if (*kbd == NULL)
+		return -1;
+
 	**kbd = *(gd->bd);
 
 	debug ("## kernel board info at 0x%08lx\n", (ulong)*kbd);
@@ -896,7 +856,7 @@ ulong get_boot_kbd (ulong alloc_current, bd_t **kbd)
 	do_bdinfo(NULL, 0, 0, NULL);
 #endif
 
-	return (ulong)*kbd;
+	return 0;
 }
 #endif /* CONFIG_PPC || CONFIG_M68K */
 
diff --git a/include/image.h b/include/image.h
index 5ce2ca4..97eb520 100644
--- a/include/image.h
+++ b/include/image.h
@@ -391,13 +391,11 @@ int get_ramdisk (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 		ulong *rd_start, ulong *rd_end);
 
 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
-ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len,
-		ulong sp_limit, ulong sp,
-		ulong *initrd_start, ulong *initrd_end);
-
-ulong get_boot_sp_limit (ulong sp);
-ulong get_boot_cmdline (ulong alloc_current, ulong *cmd_start, ulong *cmd_end);
-ulong get_boot_kbd (ulong alloc_current, bd_t **kbd);
+int ramdisk_high (struct lmb *lmb, ulong rd_data, ulong rd_len,
+		  ulong *initrd_start, ulong *initrd_end);
+int get_boot_cmdline (struct lmb *lmb, ulong *cmd_start, ulong *cmd_end,
+			ulong bootmap_base);
+int get_boot_kbd (struct lmb *lmb, bd_t **kbd, ulong bootmap_base);
 #endif /* CONFIG_PPC || CONFIG_M68K */
 
 /*******************************************************************/
diff --git a/lib_m68k/bootm.c b/lib_m68k/bootm.c
index c9d2a27..8429ca0 100644
--- a/lib_m68k/bootm.c
+++ b/lib_m68k/bootm.c
@@ -50,16 +50,18 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag,
 		    int argc, char *argv[],
 		    bootm_headers_t *images)
 {
-	ulong sp, sp_limit, alloc_current;
+	ulong sp;
 
 	ulong rd_data_start, rd_data_end, rd_len;
 	ulong initrd_start, initrd_end;
 	int ret;
 
 	ulong cmd_start, cmd_end;
+	ulong bootmap_base = 0;
 	bd_t  *kbd;
 	ulong ep = 0;
 	void  (*kernel) (bd_t *, ulong, ulong, ulong, ulong);
+	struct lmb *lmb = images->lmb;
 
 	/*
 	 * Booting a (Linux) kernel image
@@ -73,14 +75,23 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag,
 	sp = get_sp();
 	debug ("## Current stack ends at 0x%08lx ", sp);
 
-	alloc_current = sp_limit = get_boot_sp_limit(sp);
-	debug ("=> set upper limit to 0x%08lx\n", sp_limit);
+	/* adjust sp by 1K to be safe */
+	sp -= 1024;
+	lmb_reserve(lmb, sp, (CFG_SDRAM_BASE + gd->ram_size - sp));
 
 	/* allocate space and init command line */
-	alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end);
+	ret = get_boot_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
+	if (ret) {
+		puts("ERROR with allocation of cmdline\n");
+		goto error;
+	}
 
 	/* allocate space for kernel copy of board info */
-	alloc_current = get_boot_kbd (alloc_current, &kbd);
+	ret = get_boot_kbd (lmb, &kbd, bootmap_base);
+	if (ret) {
+		puts("ERROR with allocation of kernel bd\n");
+		goto error;
+	}
 	set_clocks_in_mhz(kbd);
 
 	/* find kernel entry point */
@@ -105,8 +116,9 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag,
 		goto error;
 
 	rd_len = rd_data_end - rd_data_start;
-	alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len,
-			sp_limit, get_sp (), &initrd_start, &initrd_end);
+	ret = ramdisk_high (lmb, rd_data_start, rd_len, &initrd_start, &initrd_end);
+	if (ret)
+		goto error;
 
 	debug("## Transferring control to Linux (at address %08lx) ...\n",
 	      (ulong) kernel);
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c
index 9f48b8d..d74a3f4 100644
--- a/lib_ppc/bootm.c
+++ b/lib_ppc/bootm.c
@@ -43,7 +43,7 @@
 static void fdt_error (const char *msg);
 static int get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 		bootm_headers_t *images, char **of_flat_tree, ulong *of_size);
-static ulong fdt_relocate (ulong alloc_current,
+static int fdt_relocate (struct lmb *lmb, ulong bootmap_base,
 		cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 		char **of_flat_tree, ulong *of_size);
 #endif
@@ -55,6 +55,7 @@ static ulong fdt_relocate (ulong alloc_current,
 DECLARE_GLOBAL_DATA_PTR;
 
 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+extern ulong get_effective_memsize(void);
 static ulong get_sp (void);
 static void set_clocks_in_mhz (bd_t *kbd);
 
@@ -62,22 +63,25 @@ void  __attribute__((noinline))
 do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 		bootm_headers_t *images)
 {
-	ulong	sp, sp_limit, alloc_current;
+	ulong	sp;
 
 	ulong	initrd_start, initrd_end;
 	ulong	rd_data_start, rd_data_end, rd_len;
 
-	ulong	cmd_start, cmd_end;
+	ulong	cmd_start, cmd_end, bootmap_base;
 	bd_t	*kbd;
 	ulong	ep = 0;
 	void	(*kernel)(bd_t *, ulong, ulong, ulong, ulong);
 	int	ret;
 	ulong	of_size = 0;
+	struct lmb *lmb = images->lmb;
 
 #if defined(CONFIG_OF_LIBFDT)
 	char	*of_flat_tree = NULL;
 #endif
 
+	bootmap_base = 0;
+
 	/*
 	 * Booting a (Linux) kernel image
 	 *
@@ -90,8 +94,9 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 	sp = get_sp();
 	debug ("## Current stack ends at 0x%08lx ", sp);
 
-	alloc_current = sp_limit = get_boot_sp_limit(sp);
-	debug ("=> set upper limit to 0x%08lx\n", sp_limit);
+	/* adjust sp by 1K to be safe */
+	sp -= 1024;
+	lmb_reserve(lmb, sp, (CFG_SDRAM_BASE + get_effective_memsize() - sp));
 
 #if defined(CONFIG_OF_LIBFDT)
 	/* find flattened device tree */
@@ -103,10 +108,18 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 
 	if (!of_size) {
 		/* allocate space and init command line */
-		alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end);
+		ret = get_boot_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
+		if (ret) {
+			puts("ERROR with allocation of cmdline\n");
+			goto error;
+		}
 
 		/* allocate space for kernel copy of board info */
-		alloc_current = get_boot_kbd (alloc_current, &kbd);
+		ret = get_boot_kbd (lmb, &kbd, bootmap_base);
+		if (ret) {
+			puts("ERROR with allocation of kernel bd\n");
+			goto error;
+		}
 		set_clocks_in_mhz(kbd);
 	}
 
@@ -134,8 +147,8 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 	rd_len = rd_data_end - rd_data_start;
 
 #if defined(CONFIG_OF_LIBFDT)
-	alloc_current = fdt_relocate (alloc_current,
-			cmdtp, flag, argc, argv, &of_flat_tree, &of_size);
+	ret = fdt_relocate (lmb, bootmap_base,
+		cmdtp, flag, argc, argv, &of_flat_tree, &of_size);
 
 	/*
 	 * Add the chosen node if it doesn't exist, add the env and bd_t
@@ -166,8 +179,9 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 	}
 #endif	/* CONFIG_OF_LIBFDT */
 
-	alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len,
-			sp_limit, get_sp (), &initrd_start, &initrd_end);
+	ret = ramdisk_high (lmb, rd_data_start, rd_len, &initrd_start, &initrd_end);
+	if (ret)
+		goto error;
 
 #if defined(CONFIG_OF_LIBFDT)
 	/* fixup the initrd now that we know where it should be */
@@ -488,17 +502,17 @@ error:
 	return 1;
 }
 
-static ulong fdt_relocate (ulong alloc_current,
+static int fdt_relocate (struct lmb *lmb, ulong bootmap_base,
 		cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 		char **of_flat_tree, ulong *of_size)
 {
 	char	*fdt_blob = *of_flat_tree;
 	ulong	relocate = 0;
-	ulong	new_alloc_current;
+	ulong	of_len = 0;
 
 	/* nothing to do */
 	if (*of_size == 0)
-		return alloc_current;
+		return 0;
 
 	if (fdt_check_header (fdt_blob) != 0) {
 		fdt_error ("image is not a fdt");
@@ -511,25 +525,28 @@ static ulong fdt_relocate (ulong alloc_current,
 		relocate = 1;
 #endif
 
-#ifdef CFG_BOOTMAPSZ
 	/*
 	 * The blob must be within CFG_BOOTMAPSZ,
 	 * so we flag it to be copied if it is not.
 	 */
 	if (fdt_blob >= (char *)CFG_BOOTMAPSZ)
 		relocate = 1;
-#endif
+
+	of_len = be32_to_cpu (fdt_totalsize (fdt));
 
 	/* move flattend device tree if needed */
 	if (relocate) {
 		int err;
-		ulong of_start, of_len;
-
-		of_len = *of_size;
+		ulong of_start;
 
 		/* position on a 4K boundary before the alloc_current */
-		of_start  = alloc_current - of_len;
-		of_start &= ~(4096 - 1);	/* align on page */
+		of_start = lmb_alloc_base(lmb, of_len, 0x1000,
+					 (CFG_BOOTMAPSZ + bootmap_base));
+
+		if (of_start == 0) {
+			puts("device tree - allocation error\n");
+			goto error;
+		}
 
 		debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
 			(ulong)fdt_blob, (ulong)fdt_blob + of_len - 1,
@@ -546,16 +563,14 @@ static ulong fdt_relocate (ulong alloc_current,
 		puts ("OK\n");
 
 		*of_flat_tree = (char *)of_start;
-		new_alloc_current = of_start;
 	} else {
 		*of_flat_tree = fdt_blob;
-		new_alloc_current = alloc_current;
+		lmb_reserve(lmb, (ulong)fdt, of_len);
 	}
 
-	return new_alloc_current;
+	return 0;
 
 error:
-	do_reset (cmdtp, flag, argc, argv);
 	return 1;
 }
 #endif