Merge branch 'master' of git://git.denx.de/u-boot-fdt

9 files changed, 93 insertions, 52 deletions

diff --git a/README b/README
index cdbb9de..b647eca 100644
--- a/README
+++ b/README
@@ -2348,7 +2348,10 @@ Configuration Settings:
 		used) must be put below this limit, unless "bootm_low"
 		enviroment variable is defined and non-zero. In such case
 		all data for the Linux kernel must be between "bootm_low"
-		and "bootm_low" + CONFIG_SYS_BOOTMAPSZ.
+		and "bootm_low" + CONFIG_SYS_BOOTMAPSZ.  The environment
+		variable "bootm_mapsize" will override the value of
+		CONFIG_SYS_BOOTMAPSZ.  If CONFIG_SYS_BOOTMAPSZ is undefined,
+		then the value in "bootm_size" will be used instead.
 
 - CONFIG_SYS_BOOT_RAMDISK_HIGH:
 		Enable initrd_high functionality.  If defined then the
@@ -3184,7 +3187,16 @@ List of environment variables (most likely not complete):
 		  for use by the bootm command. See also "bootm_size"
 		  environment variable. Address defined by "bootm_low" is
 		  also the base of the initial memory mapping for the Linux
-		  kernel -- see the description of CONFIG_SYS_BOOTMAPSZ.
+		  kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and
+		  bootm_mapsize.
+
+  bootm_mapsize	- Size of the initial memory mapping for the Linux kernel.
+		  This variable is given as a hexadecimal number and it
+		  defines the size of the memory region starting at base
+		  address bootm_low that is accessible by the Linux kernel
+		  during early boot.  If unset, CONFIG_SYS_BOOTMAPSZ is used
+		  as the default value if it is defined, and bootm_size is
+		  used otherwise.
 
   bootm_size	- Memory range available for image processing in the bootm
 		  command can be restricted. This variable is given as
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 7734953..802e833 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -178,7 +178,6 @@ static int bootm_linux_fdt(int machid, bootm_headers_t *images)
 {
 	ulong rd_len;
 	void (*kernel_entry)(int zero, int dt_machid, void *dtblob);
-	ulong bootmap_base = getenv_bootm_low();
 	ulong of_size = images->ft_len;
 	char **of_flat_tree = &images->ft_addr;
 	ulong *initrd_start = &images->initrd_start;
@@ -188,13 +187,15 @@ static int bootm_linux_fdt(int machid, bootm_headers_t *images)
 
 	kernel_entry = (void (*)(int, int, void *))images->ep;
 
+	boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
+
 	rd_len = images->rd_end - images->rd_start;
 	ret = boot_ramdisk_high(lmb, images->rd_start, rd_len,
 				initrd_start, initrd_end);
 	if (ret)
 		return ret;
 
-	ret = boot_relocate_fdt(lmb, bootmap_base, of_flat_tree, &of_size);
+	ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
 	if (ret)
 		return ret;
 
diff --git a/arch/m68k/lib/bootm.c b/arch/m68k/lib/bootm.c
index 76a2fb2..1229ac7 100644
--- a/arch/m68k/lib/bootm.c
+++ b/arch/m68k/lib/bootm.c
@@ -71,7 +71,6 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *ima
 	int ret;
 
 	ulong cmd_start, cmd_end;
-	ulong bootmap_base;
 	bd_t  *kbd;
 	void  (*kernel) (bd_t *, ulong, ulong, ulong, ulong);
 	struct lmb *lmb = &images->lmb;
@@ -79,17 +78,15 @@ int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *ima
 	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
 		return 1;
 
-	bootmap_base = getenv_bootm_low();
-
 	/* allocate space and init command line */
-	ret = boot_get_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
+	ret = boot_get_cmdline (lmb, &cmd_start, &cmd_end);
 	if (ret) {
 		puts("ERROR with allocation of cmdline\n");
 		goto error;
 	}
 
 	/* allocate space for kernel copy of board info */
-	ret = boot_get_kbd (lmb, &kbd, bootmap_base);
+	ret = boot_get_kbd (lmb, &kbd);
 	if (ret) {
 		puts("ERROR with allocation of kernel bd\n");
 		goto error;
diff --git a/arch/powerpc/lib/bootm.c b/arch/powerpc/lib/bootm.c
index c7f3d08..e01787d 100644
--- a/arch/powerpc/lib/bootm.c
+++ b/arch/powerpc/lib/bootm.c
@@ -96,7 +96,7 @@ static void boot_jump_linux(bootm_headers_t *images)
 		debug ("   Booting using OF flat tree...\n");
 		WATCHDOG_RESET ();
 		(*kernel) ((bd_t *)of_flat_tree, 0, 0, EPAPR_MAGIC,
-			   CONFIG_SYS_BOOTMAPSZ, 0, 0);
+			   getenv_bootm_mapsize(), 0, 0);
 		/* does not return */
 	} else
 #endif
@@ -186,7 +186,6 @@ static void boot_prep_linux(void)
 
 static int boot_cmdline_linux(bootm_headers_t *images)
 {
-	ulong bootmap_base = getenv_bootm_low();
 	ulong of_size = images->ft_len;
 	struct lmb *lmb = &images->lmb;
 	ulong *cmd_start = &images->cmdline_start;
@@ -196,7 +195,7 @@ static int boot_cmdline_linux(bootm_headers_t *images)
 
 	if (!of_size) {
 		/* allocate space and init command line */
-		ret = boot_get_cmdline (lmb, cmd_start, cmd_end, bootmap_base);
+		ret = boot_get_cmdline (lmb, cmd_start, cmd_end);
 		if (ret) {
 			puts("ERROR with allocation of cmdline\n");
 			return ret;
@@ -208,7 +207,6 @@ static int boot_cmdline_linux(bootm_headers_t *images)
 
 static int boot_bd_t_linux(bootm_headers_t *images)
 {
-	ulong bootmap_base = getenv_bootm_low();
 	ulong of_size = images->ft_len;
 	struct lmb *lmb = &images->lmb;
 	bd_t **kbd = &images->kbd;
@@ -217,7 +215,7 @@ static int boot_bd_t_linux(bootm_headers_t *images)
 
 	if (!of_size) {
 		/* allocate space for kernel copy of board info */
-		ret = boot_get_kbd (lmb, kbd, bootmap_base);
+		ret = boot_get_kbd (lmb, kbd);
 		if (ret) {
 			puts("ERROR with allocation of kernel bd\n");
 			return ret;
@@ -235,13 +233,16 @@ static int boot_body_linux(bootm_headers_t *images)
 	ulong *initrd_start = &images->initrd_start;
 	ulong *initrd_end = &images->initrd_end;
 #if defined(CONFIG_OF_LIBFDT)
-	ulong bootmap_base = getenv_bootm_low();
 	ulong of_size = images->ft_len;
 	char **of_flat_tree = &images->ft_addr;
 #endif
 
 	int ret;
 
+#if defined(CONFIG_OF_LIBFDT)
+	boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
+#endif
+
 	/* allocate space and init command line */
 	ret = boot_cmdline_linux(images);
 	if (ret)
@@ -257,8 +258,8 @@ static int boot_body_linux(bootm_headers_t *images)
 	if (ret)
 		return ret;
 
-#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_SYS_BOOTMAPSZ)
-	ret = boot_relocate_fdt(lmb, bootmap_base, of_flat_tree, &of_size);
+#if defined(CONFIG_OF_LIBFDT)
+	ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
 	if (ret)
 		return ret;
 
@@ -296,7 +297,7 @@ static int boot_body_linux(bootm_headers_t *images)
 		if (*initrd_start && *initrd_end)
 			fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1);
 	}
-#endif	/* CONFIG_OF_LIBFDT && CONFIG_SYS_BOOTMAPSZ */
+#endif	/* CONFIG_OF_LIBFDT */
 	return 0;
 }
 
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 778f6a4..1966da4 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -544,11 +544,12 @@ int do_bootm_subcommand (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
 		}
 			break;
 #endif
-#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_SYS_BOOTMAPSZ)
+#if defined(CONFIG_OF_LIBFDT)
 		case BOOTM_STATE_FDT:
 		{
-			ulong bootmap_base = getenv_bootm_low();
-			ret = boot_relocate_fdt(&images.lmb, bootmap_base,
+			boot_fdt_add_mem_rsv_regions(&images.lmb,
+						     images.ft_addr);
+			ret = boot_relocate_fdt(&images.lmb,
 				&images.ft_addr, &images.ft_len);
 			break;
 		}
diff --git a/common/fdt_support.c b/common/fdt_support.c
index edcf04a..496040b 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -183,7 +183,7 @@ int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
 		}
 	}
 
-	err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
+	err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start);
 	if (err < 0) {
 		printf("fdt_initrd: %s\n", fdt_strerror(err));
 		return err;
diff --git a/common/image.c b/common/image.c
index f63a2ff..e542a57 100644
--- a/common/image.c
+++ b/common/image.c
@@ -454,6 +454,22 @@ phys_size_t getenv_bootm_size(void)
 #endif
 }
 
+phys_size_t getenv_bootm_mapsize(void)
+{
+	phys_size_t tmp;
+	char *s = getenv ("bootm_mapsize");
+	if (s) {
+		tmp = (phys_size_t)simple_strtoull (s, NULL, 16);
+		return tmp;
+	}
+
+#if defined(CONFIG_SYS_BOOTMAPSZ)
+	return CONFIG_SYS_BOOTMAPSZ;
+#else
+	return getenv_bootm_size();
+#endif
+}
+
 void memmove_wd (void *to, void *from, size_t len, ulong chunksz)
 {
 	if (to == from)
@@ -1169,10 +1185,37 @@ static int fit_check_fdt (const void *fit, int fdt_noffset, int verify)
 #define CONFIG_SYS_FDT_PAD 0x3000
 #endif
 
+#if defined(CONFIG_OF_LIBFDT)
+/**
+ * boot_fdt_add_mem_rsv_regions - Mark the memreserve sections as unusable
+ * @lmb: pointer to lmb handle, will be used for memory mgmt
+ * @fdt_blob: pointer to fdt blob base address
+ *
+ * Adds the memreserve regions in the dtb to the lmb block.  Adding the
+ * memreserve regions prevents u-boot from using them to store the initrd
+ * or the fdt blob.
+ */
+void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
+{
+	uint64_t addr, size;
+	int i, total;
+
+	if (fdt_check_header (fdt_blob) != 0)
+		return;
+
+	total = fdt_num_mem_rsv(fdt_blob);
+	for (i = 0; i < total; i++) {
+		if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0)
+			continue;
+		printf("   reserving fdt memory region: addr=%llx size=%llx\n",
+			(unsigned long long)addr, (unsigned long long)size);
+		lmb_reserve(lmb, addr, size);
+	}
+}
+
 /**
  * boot_relocate_fdt - relocate flat device tree
  * @lmb: pointer to lmb handle, will be used for memory mgmt
- * @bootmap_base: base address of the bootmap region
  * @of_flat_tree: pointer to a char* variable, will hold fdt start address
  * @of_size: pointer to a ulong variable, will hold fdt length
  *
@@ -1187,9 +1230,7 @@ static int fit_check_fdt (const void *fit, int fdt_noffset, int verify)
  *      0 - success
  *      1 - failure
  */
-#if defined(CONFIG_SYS_BOOTMAPSZ)
-int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
-		char **of_flat_tree, ulong *of_size)
+int boot_relocate_fdt (struct lmb *lmb, char **of_flat_tree, ulong *of_size)
 {
 	void	*fdt_blob = *of_flat_tree;
 	void	*of_start = 0;
@@ -1209,7 +1250,7 @@ int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
 	/* Pad the FDT by a specified amount */
 	of_len = *of_size + CONFIG_SYS_FDT_PAD;
 	of_start = (void *)(unsigned long)lmb_alloc_base(lmb, of_len, 0x1000,
-			(CONFIG_SYS_BOOTMAPSZ + bootmap_base));
+			getenv_bootm_mapsize() + getenv_bootm_low());
 
 	if (of_start == 0) {
 		puts("device tree - allocation error\n");
@@ -1238,7 +1279,7 @@ int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
 error:
 	return 1;
 }
-#endif /* CONFIG_SYS_BOOTMAPSZ */
+#endif /* CONFIG_OF_LIBFDT */
 
 /**
  * boot_get_fdt - main fdt handling routine
@@ -1567,11 +1608,9 @@ error:
  * @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
  *
  * boot_get_cmdline() allocates space for kernel command line below
- * BOOTMAPSZ + bootmap_base address. If "bootargs" U-boot environemnt
+ * BOOTMAPSZ + getenv_bootm_low() address. If "bootargs" U-boot environemnt
  * variable is present its contents is copied to allocated kernel
  * command line.
  *
@@ -1579,14 +1618,13 @@ error:
  *      0 - success
  *     -1 - failure
  */
-int boot_get_cmdline (struct lmb *lmb, ulong *cmd_start, ulong *cmd_end,
-			ulong bootmap_base)
+int boot_get_cmdline (struct lmb *lmb, ulong *cmd_start, ulong *cmd_end)
 {
 	char *cmdline;
 	char *s;
 
 	cmdline = (char *)(ulong)lmb_alloc_base(lmb, CONFIG_SYS_BARGSIZE, 0xf,
-					 CONFIG_SYS_BOOTMAPSZ + bootmap_base);
+				getenv_bootm_mapsize() + getenv_bootm_low());
 
 	if (cmdline == NULL)
 		return -1;
@@ -1610,21 +1648,19 @@ int boot_get_cmdline (struct lmb *lmb, ulong *cmd_start, ulong *cmd_end,
  * boot_get_kbd - allocate and initialize kernel copy of board info
  * @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
  *
  * boot_get_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.
+ * BOOTMAPSZ + getenv_bootm_low() address and kernel board info is initialized
+ * with the current u-boot board info data.
  *
  * returns:
  *      0 - success
  *     -1 - failure
  */
-int boot_get_kbd (struct lmb *lmb, bd_t **kbd, ulong bootmap_base)
+int boot_get_kbd (struct lmb *lmb, bd_t **kbd)
 {
 	*kbd = (bd_t *)(ulong)lmb_alloc_base(lmb, sizeof(bd_t), 0xf,
-				      CONFIG_SYS_BOOTMAPSZ + bootmap_base);
+				getenv_bootm_mapsize() + getenv_bootm_low());
 	if (*kbd == NULL)
 		return -1;
 
diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
index 5cfa4cb..a0f6829 100644
--- a/include/configs/omap3_beagle.h
+++ b/include/configs/omap3_beagle.h
@@ -56,13 +56,6 @@
 #define CONFIG_MISC_INIT_R
 
 #define CONFIG_OF_LIBFDT		1
-/*
- * The early kernel mapping on ARM currently only maps from the base of DRAM
- * to the end of the kernel image.  The kernel is loaded at DRAM base + 0x8000.
- * The early kernel pagetable uses DRAM base + 0x4000 to DRAM base + 0x8000,
- * so that leaves DRAM base to DRAM base + 0x4000 available.
- */
-#define CONFIG_SYS_BOOTMAPSZ	        0x4000
 
 #define CONFIG_CMDLINE_TAG		1	/* enable passing of ATAGs */
 #define CONFIG_SETUP_MEMORY_TAGS	1
diff --git a/include/image.h b/include/image.h
index 005e0d2..c31e862 100644
--- a/include/image.h
+++ b/include/image.h
@@ -336,8 +336,8 @@ int boot_get_ramdisk (int argc, char * const argv[], bootm_headers_t *images,
 #ifdef CONFIG_OF_LIBFDT
 int boot_get_fdt (int flag, int argc, char * const argv[], bootm_headers_t *images,
 		char **of_flat_tree, ulong *of_size);
-int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
-		char **of_flat_tree, ulong *of_size);
+void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob);
+int boot_relocate_fdt (struct lmb *lmb, char **of_flat_tree, ulong *of_size);
 #endif
 
 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
@@ -345,11 +345,10 @@ int boot_ramdisk_high (struct lmb *lmb, ulong rd_data, ulong rd_len,
 		  ulong *initrd_start, ulong *initrd_end);
 #endif /* CONFIG_SYS_BOOT_RAMDISK_HIGH */
 #ifdef CONFIG_SYS_BOOT_GET_CMDLINE
-int boot_get_cmdline (struct lmb *lmb, ulong *cmd_start, ulong *cmd_end,
-			ulong bootmap_base);
+int boot_get_cmdline (struct lmb *lmb, ulong *cmd_start, ulong *cmd_end);
 #endif /* CONFIG_SYS_BOOT_GET_CMDLINE */
 #ifdef CONFIG_SYS_BOOT_GET_KBD
-int boot_get_kbd (struct lmb *lmb, bd_t **kbd, ulong bootmap_base);
+int boot_get_kbd (struct lmb *lmb, bd_t **kbd);
 #endif /* CONFIG_SYS_BOOT_GET_KBD */
 #endif /* !USE_HOSTCC */
 
@@ -453,6 +452,7 @@ int image_check_dcrc (const image_header_t *hdr);
 int getenv_yesno (char *var);
 ulong getenv_bootm_low(void);
 phys_size_t getenv_bootm_size(void);
+phys_size_t getenv_bootm_mapsize(void);
 void memmove_wd (void *to, void *from, size_t len, ulong chunksz);
 #endif