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Posted to commits@mynewt.apache.org by cc...@apache.org on 2016/11/10 22:39:22 UTC

[15/50] [abbrv] incubator-mynewt-core git commit: MYNEWT-475: BSP Cleanup

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/nrf51dk/nrf51xxac.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/nrf51dk/nrf51xxac.ld b/hw/bsp/nrf51dk/nrf51xxac.ld
new file mode 100755
index 0000000..1e36529
--- /dev/null
+++ b/hw/bsp/nrf51dk/nrf51xxac.ld
@@ -0,0 +1,25 @@
+/* Linker script for Nordic Semiconductor nRF5 devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00008000, LENGTH = 0x1b800
+  RAM (rwx) :  ORIGIN = 0x20000000, LENGTH = 0x8000
+}
+
+/* This linker script is used for images and thus contains an image header */
+_imghdr_size = 0x20;

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/nrf52dk/boot-nrf52dk.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/nrf52dk/boot-nrf52dk.ld b/hw/bsp/nrf52dk/boot-nrf52dk.ld
deleted file mode 100755
index 5bb2099..0000000
--- a/hw/bsp/nrf52dk/boot-nrf52dk.ld
+++ /dev/null
@@ -1,191 +0,0 @@
-/* Linker script for Nordic Semiconductor nRF5 devices
- *
- * Version: Sourcery G++ 4.5-1
- * Support: https://support.codesourcery.com/GNUToolchain/
- *
- * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions.  No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
-
-MEMORY
-{
-  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x4000
-  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
-}
-
-/* Linker script to place sections and symbol values. Should be used together
- * with other linker script that defines memory regions FLASH and RAM.
- * It references following symbols, which must be defined in code:
- *   Reset_Handler : Entry of reset handler
- *
- * It defines following symbols, which code can use without definition:
- *   __exidx_start
- *   __exidx_end
- *   __etext
- *   __data_start__
- *   __preinit_array_start
- *   __preinit_array_end
- *   __init_array_start
- *   __init_array_end
- *   __fini_array_start
- *   __fini_array_end
- *   __data_end__
- *   __bss_start__
- *   __bss_end__
- *   __HeapBase
- *   __HeapLimit
- *   __StackLimit
- *   __StackTop
- *   __stack
- *   __bssnz_start__
- *   __bssnz_end__
- */
-ENTRY(Reset_Handler)
-
-SECTIONS
-{
-    .text :
-    {
-        __isr_vector_start = .;
-        KEEP(*(.isr_vector))
-        __isr_vector_end = .;
-        *(.text*)
-
-        KEEP(*(.init))
-        KEEP(*(.fini))
-
-        /* .ctors */
-        *crtbegin.o(.ctors)
-        *crtbegin?.o(.ctors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
-        *(SORT(.ctors.*))
-        *(.ctors)
-
-        /* .dtors */
-        *crtbegin.o(.dtors)
-        *crtbegin?.o(.dtors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
-        *(SORT(.dtors.*))
-        *(.dtors)
-
-        *(.rodata*)
-
-        *(.eh_frame*)
-        . = ALIGN(4);
-    } > FLASH
-
-
-    .ARM.extab :
-    {
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-        . = ALIGN(4);
-    } > FLASH
-
-    __exidx_start = .;
-    .ARM.exidx :
-    {
-        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-        . = ALIGN(4);
-    } > FLASH
-    __exidx_end = .;
-
-    __etext = .;
-
-    .vector_relocation :
-    {
-        . = ALIGN(4);
-        __vector_tbl_reloc__ = .;
-        . = . + (__isr_vector_end - __isr_vector_start);
-        . = ALIGN(4);
-    } > RAM
-
-    .data : AT (__etext)
-    {
-        __data_start__ = .;
-        *(vtable)
-        *(.data*)
-
-        . = ALIGN(4);
-        /* preinit data */
-        PROVIDE_HIDDEN (__preinit_array_start = .);
-        *(.preinit_array)
-        PROVIDE_HIDDEN (__preinit_array_end = .);
-
-        . = ALIGN(4);
-        /* init data */
-        PROVIDE_HIDDEN (__init_array_start = .);
-        *(SORT(.init_array.*))
-        *(.init_array)
-        PROVIDE_HIDDEN (__init_array_end = .);
-
-
-        . = ALIGN(4);
-        /* finit data */
-        PROVIDE_HIDDEN (__fini_array_start = .);
-        *(SORT(.fini_array.*))
-        *(.fini_array)
-        PROVIDE_HIDDEN (__fini_array_end = .);
-
-        *(.jcr)
-        . = ALIGN(4);
-        /* All data end */
-        __data_end__ = .;
-    } > RAM
-
-    /* Non-zeroed BSS.  This section is similar to BSS, with the following 
-     * caveat:
-     *    1. It does not get zeroed at init-time.
-     */
-    .bssnz :
-    {
-        . = ALIGN(4);
-        __bssnz_start__ = .;
-        *(.bss.core.nz*)
-        . = ALIGN(4);
-        __bssnz_end__ = .;
-    } > RAM
-
-    .bss :
-    {
-        . = ALIGN(4);
-        __bss_start__ = .;
-        *(.bss*)
-        *(COMMON)
-        . = ALIGN(4);
-        __bss_end__ = .;
-    } > RAM
-
-    /* Heap starts after BSS */
-    __HeapBase = .;
-
-    /* .stack_dummy section doesn't contains any symbols. It is only
-     * used for linker to calculate size of stack sections, and assign
-     * values to stack symbols later */
-    .stack_dummy (COPY):
-    {
-        *(.stack*)
-    } > RAM
-
-    /* Set stack top to end of RAM, and stack limit move down by
-     * size of stack_dummy section */
-    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
-    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
-    PROVIDE(__stack = __StackTop);
-
-    /* Top of head is the bottom of the stack */
-    __HeapLimit = __StackLimit;
-
-    /* Check if data + heap + stack exceeds RAM limit */
-    ASSERT(__HeapBase <= __HeapLimit, "region RAM overflowed with stack")
-}
-

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/nrf52dk/boot-nrf52xxaa.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/nrf52dk/boot-nrf52xxaa.ld b/hw/bsp/nrf52dk/boot-nrf52xxaa.ld
new file mode 100755
index 0000000..d1f1b99
--- /dev/null
+++ b/hw/bsp/nrf52dk/boot-nrf52xxaa.ld
@@ -0,0 +1,25 @@
+/* Linker script for Nordic Semiconductor nRF5 devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x4000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
+}
+
+/* The bootloader does not contain an image header */
+_imghdr_size = 0x0;

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/nrf52dk/bsp.yml
----------------------------------------------------------------------
diff --git a/hw/bsp/nrf52dk/bsp.yml b/hw/bsp/nrf52dk/bsp.yml
index 8409c13..312e102 100644
--- a/hw/bsp/nrf52dk/bsp.yml
+++ b/hw/bsp/nrf52dk/bsp.yml
@@ -19,8 +19,12 @@
 
 bsp.arch: cortex_m4
 bsp.compiler: compiler/arm-none-eabi-m4
-bsp.linkerscript: "nrf52dk.ld"
-bsp.linkerscript.BOOT_LOADER.OVERWRITE: "boot-nrf52dk.ld"
+bsp.linkerscript:
+    - "nrf52xxaa.ld"
+    - "@apache-mynewt-core/hw/mcu/nordic/nrf52xxx/nrf52.ld"
+bsp.linkerscript.BOOT_LOADER.OVERWRITE:
+    - "boot-nrf52xxaa.ld"
+    - "@apache-mynewt-core/hw/mcu/nordic/nrf52xxx/nrf52.ld"
 bsp.part2linkerscript: "split-nrf52dk.ld"
 bsp.downloadscript: nrf52dk_download.sh
 bsp.debugscript: nrf52dk_debug.sh

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/nrf52dk/nrf52dk.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/nrf52dk/nrf52dk.ld b/hw/bsp/nrf52dk/nrf52dk.ld
deleted file mode 100755
index e131176..0000000
--- a/hw/bsp/nrf52dk/nrf52dk.ld
+++ /dev/null
@@ -1,202 +0,0 @@
-/* Linker script for Nordic Semiconductor nRF5 devices
- *
- * Version: Sourcery G++ 4.5-1
- * Support: https://support.codesourcery.com/GNUToolchain/
- *
- * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions.  No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
-
-MEMORY
-{
-  FLASH (rx) : ORIGIN = 0x00008000, LENGTH = 0x3a000
-  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
-}
-
-/* Linker script to place sections and symbol values. Should be used together
- * with other linker script that defines memory regions FLASH and RAM.
- * It references following symbols, which must be defined in code:
- *   Reset_Handler : Entry of reset handler
- *
- * It defines following symbols, which code can use without definition:
- *   __exidx_start
- *   __exidx_end
- *   __etext
- *   __data_start__
- *   __preinit_array_start
- *   __preinit_array_end
- *   __init_array_start
- *   __init_array_end
- *   __fini_array_start
- *   __fini_array_end
- *   __data_end__
- *   __bss_start__
- *   __bss_end__
- *   __HeapBase
- *   __HeapLimit
- *   __StackLimit
- *   __StackTop
- *   __stack
- *   __bssnz_start__
- *   __bssnz_end__
- */
-ENTRY(Reset_Handler)
-
-SECTIONS
-{
-    .imghdr (NOLOAD):
-    {
-        . = . + 0x20;
-    } > FLASH
-
-    .text :
-    {
-        __isr_vector_start = .;
-        KEEP(*(.isr_vector))
-        __isr_vector_end = .;
-        *(.text*)
-
-        KEEP(*(.init))
-        KEEP(*(.fini))
-
-        /* .ctors */
-        *crtbegin.o(.ctors)
-        *crtbegin?.o(.ctors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
-        *(SORT(.ctors.*))
-        *(.ctors)
-
-        /* .dtors */
-        *crtbegin.o(.dtors)
-        *crtbegin?.o(.dtors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
-        *(SORT(.dtors.*))
-        *(.dtors)
-
-        *(.rodata*)
-
-        *(.eh_frame*)
-        . = ALIGN(4);
-    } > FLASH
-
-
-    .ARM.extab :
-    {
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-        . = ALIGN(4);
-    } > FLASH
-
-    __exidx_start = .;
-    .ARM.exidx :
-    {
-        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-        . = ALIGN(4);
-    } > FLASH
-    __exidx_end = .;
-
-    __etext = .;
-
-    .vector_relocation :
-    {
-        . = ALIGN(4);
-        __vector_tbl_reloc__ = .;
-        . = . + (__isr_vector_end - __isr_vector_start);
-        . = ALIGN(4);
-    } > RAM
-
-    .data : AT (__etext)
-    {
-        __data_start__ = .;
-        *(vtable)
-        *(.data*)
-
-        . = ALIGN(4);
-        /* preinit data */
-        PROVIDE_HIDDEN (__preinit_array_start = .);
-        *(.preinit_array)
-        PROVIDE_HIDDEN (__preinit_array_end = .);
-
-        . = ALIGN(4);
-        /* init data */
-        PROVIDE_HIDDEN (__init_array_start = .);
-        *(SORT(.init_array.*))
-        *(.init_array)
-        PROVIDE_HIDDEN (__init_array_end = .);
-
-
-        . = ALIGN(4);
-        /* finit data */
-        PROVIDE_HIDDEN (__fini_array_start = .);
-        *(SORT(.fini_array.*))
-        *(.fini_array)
-        PROVIDE_HIDDEN (__fini_array_end = .);
-
-        *(.jcr)
-        . = ALIGN(4);
-        /* All data end */
-        __data_end__ = .;
-    } > RAM
-
-    /* Non-zeroed BSS.  This section is similar to BSS, with the following two
-     * caveats:
-     *    1. It does not get zeroed at init-time.
-     *    2. You cannot use it as source memory for EasyDMA.
-     *
-     * This section exists because of a hardware defect; see errata 33 and 34
-     * in nrf52 errata sheet.
-     */
-    .bssnz :
-    {
-        . = ALIGN(4);
-        __bssnz_start__ = .;
-        *(.bss.core.nz*)
-        . = ALIGN(4);
-        __bssnz_end__ = .;
-    } > RAM
-
-    .bss :
-    {
-        . = ALIGN(4);
-        __bss_start__ = .;
-        *(.bss*)
-        *(COMMON)
-        . = ALIGN(4);
-        __bss_end__ = .;
-    } > RAM
-
-    /* Heap starts after BSS */
-    __HeapBase = .;
-
-    /* .stack_dummy section doesn't contains any symbols. It is only
-     * used for linker to calculate size of stack sections, and assign
-     * values to stack symbols later */
-    .stack_dummy (COPY):
-    {
-        *(.stack*)
-    } > RAM
-
-    _ram_start = ORIGIN(RAM);
-
-    /* Set stack top to end of RAM, and stack limit move down by
-     * size of stack_dummy section */
-    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
-    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
-    PROVIDE(__stack = __StackTop);
-
-    /* Top of head is the bottom of the stack */
-    __HeapLimit = __StackLimit;
-
-    /* Check if data + heap + stack exceeds RAM limit */
-    ASSERT(__HeapBase <= __HeapLimit, "region RAM overflowed with stack")
-}
-

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/nrf52dk/nrf52xxaa.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/nrf52dk/nrf52xxaa.ld b/hw/bsp/nrf52dk/nrf52xxaa.ld
new file mode 100755
index 0000000..9433e37
--- /dev/null
+++ b/hw/bsp/nrf52dk/nrf52xxaa.ld
@@ -0,0 +1,25 @@
+/* Linker script for Nordic Semiconductor nRF5 devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00008000, LENGTH = 0x3a000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
+}
+
+/* This linker script is used for images and thus contains an image header */
+_imghdr_size = 0x20;

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/rb-nano2/boot-nrf52xxaa.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/rb-nano2/boot-nrf52xxaa.ld b/hw/bsp/rb-nano2/boot-nrf52xxaa.ld
new file mode 100755
index 0000000..d1f1b99
--- /dev/null
+++ b/hw/bsp/rb-nano2/boot-nrf52xxaa.ld
@@ -0,0 +1,25 @@
+/* Linker script for Nordic Semiconductor nRF5 devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x4000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
+}
+
+/* The bootloader does not contain an image header */
+_imghdr_size = 0x0;

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/rb-nano2/boot-rb-nano2.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/rb-nano2/boot-rb-nano2.ld b/hw/bsp/rb-nano2/boot-rb-nano2.ld
deleted file mode 100755
index 5bb2099..0000000
--- a/hw/bsp/rb-nano2/boot-rb-nano2.ld
+++ /dev/null
@@ -1,191 +0,0 @@
-/* Linker script for Nordic Semiconductor nRF5 devices
- *
- * Version: Sourcery G++ 4.5-1
- * Support: https://support.codesourcery.com/GNUToolchain/
- *
- * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions.  No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
-
-MEMORY
-{
-  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x4000
-  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
-}
-
-/* Linker script to place sections and symbol values. Should be used together
- * with other linker script that defines memory regions FLASH and RAM.
- * It references following symbols, which must be defined in code:
- *   Reset_Handler : Entry of reset handler
- *
- * It defines following symbols, which code can use without definition:
- *   __exidx_start
- *   __exidx_end
- *   __etext
- *   __data_start__
- *   __preinit_array_start
- *   __preinit_array_end
- *   __init_array_start
- *   __init_array_end
- *   __fini_array_start
- *   __fini_array_end
- *   __data_end__
- *   __bss_start__
- *   __bss_end__
- *   __HeapBase
- *   __HeapLimit
- *   __StackLimit
- *   __StackTop
- *   __stack
- *   __bssnz_start__
- *   __bssnz_end__
- */
-ENTRY(Reset_Handler)
-
-SECTIONS
-{
-    .text :
-    {
-        __isr_vector_start = .;
-        KEEP(*(.isr_vector))
-        __isr_vector_end = .;
-        *(.text*)
-
-        KEEP(*(.init))
-        KEEP(*(.fini))
-
-        /* .ctors */
-        *crtbegin.o(.ctors)
-        *crtbegin?.o(.ctors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
-        *(SORT(.ctors.*))
-        *(.ctors)
-
-        /* .dtors */
-        *crtbegin.o(.dtors)
-        *crtbegin?.o(.dtors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
-        *(SORT(.dtors.*))
-        *(.dtors)
-
-        *(.rodata*)
-
-        *(.eh_frame*)
-        . = ALIGN(4);
-    } > FLASH
-
-
-    .ARM.extab :
-    {
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-        . = ALIGN(4);
-    } > FLASH
-
-    __exidx_start = .;
-    .ARM.exidx :
-    {
-        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-        . = ALIGN(4);
-    } > FLASH
-    __exidx_end = .;
-
-    __etext = .;
-
-    .vector_relocation :
-    {
-        . = ALIGN(4);
-        __vector_tbl_reloc__ = .;
-        . = . + (__isr_vector_end - __isr_vector_start);
-        . = ALIGN(4);
-    } > RAM
-
-    .data : AT (__etext)
-    {
-        __data_start__ = .;
-        *(vtable)
-        *(.data*)
-
-        . = ALIGN(4);
-        /* preinit data */
-        PROVIDE_HIDDEN (__preinit_array_start = .);
-        *(.preinit_array)
-        PROVIDE_HIDDEN (__preinit_array_end = .);
-
-        . = ALIGN(4);
-        /* init data */
-        PROVIDE_HIDDEN (__init_array_start = .);
-        *(SORT(.init_array.*))
-        *(.init_array)
-        PROVIDE_HIDDEN (__init_array_end = .);
-
-
-        . = ALIGN(4);
-        /* finit data */
-        PROVIDE_HIDDEN (__fini_array_start = .);
-        *(SORT(.fini_array.*))
-        *(.fini_array)
-        PROVIDE_HIDDEN (__fini_array_end = .);
-
-        *(.jcr)
-        . = ALIGN(4);
-        /* All data end */
-        __data_end__ = .;
-    } > RAM
-
-    /* Non-zeroed BSS.  This section is similar to BSS, with the following 
-     * caveat:
-     *    1. It does not get zeroed at init-time.
-     */
-    .bssnz :
-    {
-        . = ALIGN(4);
-        __bssnz_start__ = .;
-        *(.bss.core.nz*)
-        . = ALIGN(4);
-        __bssnz_end__ = .;
-    } > RAM
-
-    .bss :
-    {
-        . = ALIGN(4);
-        __bss_start__ = .;
-        *(.bss*)
-        *(COMMON)
-        . = ALIGN(4);
-        __bss_end__ = .;
-    } > RAM
-
-    /* Heap starts after BSS */
-    __HeapBase = .;
-
-    /* .stack_dummy section doesn't contains any symbols. It is only
-     * used for linker to calculate size of stack sections, and assign
-     * values to stack symbols later */
-    .stack_dummy (COPY):
-    {
-        *(.stack*)
-    } > RAM
-
-    /* Set stack top to end of RAM, and stack limit move down by
-     * size of stack_dummy section */
-    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
-    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
-    PROVIDE(__stack = __StackTop);
-
-    /* Top of head is the bottom of the stack */
-    __HeapLimit = __StackLimit;
-
-    /* Check if data + heap + stack exceeds RAM limit */
-    ASSERT(__HeapBase <= __HeapLimit, "region RAM overflowed with stack")
-}
-

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/rb-nano2/bsp.yml
----------------------------------------------------------------------
diff --git a/hw/bsp/rb-nano2/bsp.yml b/hw/bsp/rb-nano2/bsp.yml
index bc9ef54..4b4f6fe 100644
--- a/hw/bsp/rb-nano2/bsp.yml
+++ b/hw/bsp/rb-nano2/bsp.yml
@@ -19,8 +19,12 @@
 
 bsp.arch: cortex_m4
 bsp.compiler: compiler/arm-none-eabi-m4
-bsp.linkerscript: "rb-nano2.ld"
-bsp.linkerscript.BOOT_LOADER.OVERWRITE: "boot-rb-nano2.ld"
+bsp.linkerscript:
+    - "nrf52xxaa.ld"
+    - "@apache-mynewt-core/hw/mcu/nordic/nrf52xxx/nrf52.ld"
+bsp.linkerscript.BOOT_LOADER.OVERWRITE:
+    - "boot-nrf52xxaa.ld"
+    - "@apache-mynewt-core/hw/mcu/nordic/nrf52xxx/nrf52.ld"
 bsp.part2linkerscript: "split-rb-nano2.ld"
 bsp.downloadscript: rb-nano2_download.sh
 bsp.debugscript: rb-nano2_debug.sh

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/rb-nano2/nrf52xxaa.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/rb-nano2/nrf52xxaa.ld b/hw/bsp/rb-nano2/nrf52xxaa.ld
new file mode 100755
index 0000000..9433e37
--- /dev/null
+++ b/hw/bsp/rb-nano2/nrf52xxaa.ld
@@ -0,0 +1,25 @@
+/* Linker script for Nordic Semiconductor nRF5 devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00008000, LENGTH = 0x3a000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
+}
+
+/* This linker script is used for images and thus contains an image header */
+_imghdr_size = 0x20;

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/bsp/rb-nano2/rb-nano2.ld
----------------------------------------------------------------------
diff --git a/hw/bsp/rb-nano2/rb-nano2.ld b/hw/bsp/rb-nano2/rb-nano2.ld
deleted file mode 100755
index e131176..0000000
--- a/hw/bsp/rb-nano2/rb-nano2.ld
+++ /dev/null
@@ -1,202 +0,0 @@
-/* Linker script for Nordic Semiconductor nRF5 devices
- *
- * Version: Sourcery G++ 4.5-1
- * Support: https://support.codesourcery.com/GNUToolchain/
- *
- * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions.  No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
-
-MEMORY
-{
-  FLASH (rx) : ORIGIN = 0x00008000, LENGTH = 0x3a000
-  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x10000
-}
-
-/* Linker script to place sections and symbol values. Should be used together
- * with other linker script that defines memory regions FLASH and RAM.
- * It references following symbols, which must be defined in code:
- *   Reset_Handler : Entry of reset handler
- *
- * It defines following symbols, which code can use without definition:
- *   __exidx_start
- *   __exidx_end
- *   __etext
- *   __data_start__
- *   __preinit_array_start
- *   __preinit_array_end
- *   __init_array_start
- *   __init_array_end
- *   __fini_array_start
- *   __fini_array_end
- *   __data_end__
- *   __bss_start__
- *   __bss_end__
- *   __HeapBase
- *   __HeapLimit
- *   __StackLimit
- *   __StackTop
- *   __stack
- *   __bssnz_start__
- *   __bssnz_end__
- */
-ENTRY(Reset_Handler)
-
-SECTIONS
-{
-    .imghdr (NOLOAD):
-    {
-        . = . + 0x20;
-    } > FLASH
-
-    .text :
-    {
-        __isr_vector_start = .;
-        KEEP(*(.isr_vector))
-        __isr_vector_end = .;
-        *(.text*)
-
-        KEEP(*(.init))
-        KEEP(*(.fini))
-
-        /* .ctors */
-        *crtbegin.o(.ctors)
-        *crtbegin?.o(.ctors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
-        *(SORT(.ctors.*))
-        *(.ctors)
-
-        /* .dtors */
-        *crtbegin.o(.dtors)
-        *crtbegin?.o(.dtors)
-        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
-        *(SORT(.dtors.*))
-        *(.dtors)
-
-        *(.rodata*)
-
-        *(.eh_frame*)
-        . = ALIGN(4);
-    } > FLASH
-
-
-    .ARM.extab :
-    {
-        *(.ARM.extab* .gnu.linkonce.armextab.*)
-        . = ALIGN(4);
-    } > FLASH
-
-    __exidx_start = .;
-    .ARM.exidx :
-    {
-        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-        . = ALIGN(4);
-    } > FLASH
-    __exidx_end = .;
-
-    __etext = .;
-
-    .vector_relocation :
-    {
-        . = ALIGN(4);
-        __vector_tbl_reloc__ = .;
-        . = . + (__isr_vector_end - __isr_vector_start);
-        . = ALIGN(4);
-    } > RAM
-
-    .data : AT (__etext)
-    {
-        __data_start__ = .;
-        *(vtable)
-        *(.data*)
-
-        . = ALIGN(4);
-        /* preinit data */
-        PROVIDE_HIDDEN (__preinit_array_start = .);
-        *(.preinit_array)
-        PROVIDE_HIDDEN (__preinit_array_end = .);
-
-        . = ALIGN(4);
-        /* init data */
-        PROVIDE_HIDDEN (__init_array_start = .);
-        *(SORT(.init_array.*))
-        *(.init_array)
-        PROVIDE_HIDDEN (__init_array_end = .);
-
-
-        . = ALIGN(4);
-        /* finit data */
-        PROVIDE_HIDDEN (__fini_array_start = .);
-        *(SORT(.fini_array.*))
-        *(.fini_array)
-        PROVIDE_HIDDEN (__fini_array_end = .);
-
-        *(.jcr)
-        . = ALIGN(4);
-        /* All data end */
-        __data_end__ = .;
-    } > RAM
-
-    /* Non-zeroed BSS.  This section is similar to BSS, with the following two
-     * caveats:
-     *    1. It does not get zeroed at init-time.
-     *    2. You cannot use it as source memory for EasyDMA.
-     *
-     * This section exists because of a hardware defect; see errata 33 and 34
-     * in nrf52 errata sheet.
-     */
-    .bssnz :
-    {
-        . = ALIGN(4);
-        __bssnz_start__ = .;
-        *(.bss.core.nz*)
-        . = ALIGN(4);
-        __bssnz_end__ = .;
-    } > RAM
-
-    .bss :
-    {
-        . = ALIGN(4);
-        __bss_start__ = .;
-        *(.bss*)
-        *(COMMON)
-        . = ALIGN(4);
-        __bss_end__ = .;
-    } > RAM
-
-    /* Heap starts after BSS */
-    __HeapBase = .;
-
-    /* .stack_dummy section doesn't contains any symbols. It is only
-     * used for linker to calculate size of stack sections, and assign
-     * values to stack symbols later */
-    .stack_dummy (COPY):
-    {
-        *(.stack*)
-    } > RAM
-
-    _ram_start = ORIGIN(RAM);
-
-    /* Set stack top to end of RAM, and stack limit move down by
-     * size of stack_dummy section */
-    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
-    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
-    PROVIDE(__stack = __StackTop);
-
-    /* Top of head is the bottom of the stack */
-    __HeapLimit = __StackLimit;
-
-    /* Check if data + heap + stack exceeds RAM limit */
-    ASSERT(__HeapBase <= __HeapLimit, "region RAM overflowed with stack")
-}
-

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/mcu/nordic/nrf51xxx/nrf51.ld
----------------------------------------------------------------------
diff --git a/hw/mcu/nordic/nrf51xxx/nrf51.ld b/hw/mcu/nordic/nrf51xxx/nrf51.ld
new file mode 100755
index 0000000..820510f
--- /dev/null
+++ b/hw/mcu/nordic/nrf51xxx/nrf51.ld
@@ -0,0 +1,180 @@
+/* Linker script for Nordic Semiconductor nRF5 devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __HeapBase
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   __bssnz_start__
+ *   __bssnz_end__
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    .imghdr (NOLOAD):
+    {
+        . = . + _imghdr_size;
+    } > FLASH
+
+    .text :
+    {
+        __isr_vector_start = .;
+        KEEP(*(.isr_vector))
+        __isr_vector_end = .;
+        *(.text*)
+
+        KEEP(*(.init))
+        KEEP(*(.fini))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        *(.eh_frame*)
+        . = ALIGN(4);
+    } > FLASH
+
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+        . = ALIGN(4);
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+        . = ALIGN(4);
+    } > FLASH
+    __exidx_end = .;
+
+    __etext = .;
+
+    /* Keep first in RAM, as well as in bootloader */
+    .vector_relocation :
+    {
+        . = ALIGN(4);
+        __vector_tbl_reloc__ = .;
+        . = . + (__isr_vector_end - __isr_vector_start);
+        . = ALIGN(4);
+    } > RAM
+
+    .data : AT (__etext)
+    {
+        __data_start__ = .;
+        *(vtable)
+        *(.data*)
+
+        . = ALIGN(4);
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        *(.preinit_array)
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(4);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        *(SORT(.init_array.*))
+        *(.init_array)
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(4);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        *(SORT(.fini_array.*))
+        *(.fini_array)
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        *(.jcr)
+        . = ALIGN(4);
+        /* All data end */
+        __data_end__ = .;
+    } > RAM
+
+    .bss :
+    {
+        . = ALIGN(4);
+        __bss_start__ = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(4);
+        __bss_end__ = .;
+    } > RAM
+
+    /* Heap starts after BSS */
+    __HeapBase = .;
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (COPY):
+    {
+        *(.stack*)
+    } > RAM
+
+    _ram_start = ORIGIN(RAM);
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+    PROVIDE(__stack = __StackTop);
+
+    /* Top of head is the bottom of the stack */
+    __HeapLimit = __StackLimit;
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__HeapBase <= __HeapLimit, "region RAM overflowed with stack")
+}
+

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/mcu/nordic/nrf52xxx/nrf52.ld
----------------------------------------------------------------------
diff --git a/hw/mcu/nordic/nrf52xxx/nrf52.ld b/hw/mcu/nordic/nrf52xxx/nrf52.ld
new file mode 100755
index 0000000..fda1a8e
--- /dev/null
+++ b/hw/mcu/nordic/nrf52xxx/nrf52.ld
@@ -0,0 +1,196 @@
+/* Linker script for Nordic Semiconductor nRF5 devices
+ *
+ * Version: Sourcery G++ 4.5-1
+ * Support: https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __HeapBase
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   __bssnz_start__
+ *   __bssnz_end__
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    .imghdr (NOLOAD):
+    {
+        . = . + _imghdr_size;
+    } > FLASH
+
+    .text :
+    {
+        __isr_vector_start = .;
+        KEEP(*(.isr_vector))
+        __isr_vector_end = .;
+        *(.text*)
+
+        KEEP(*(.init))
+        KEEP(*(.fini))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        *(.eh_frame*)
+        . = ALIGN(4);
+    } > FLASH
+
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+        . = ALIGN(4);
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+        . = ALIGN(4);
+    } > FLASH
+    __exidx_end = .;
+
+    __etext = .;
+
+    .vector_relocation :
+    {
+        . = ALIGN(4);
+        __vector_tbl_reloc__ = .;
+        . = . + (__isr_vector_end - __isr_vector_start);
+        . = ALIGN(4);
+    } > RAM
+
+    .data : AT (__etext)
+    {
+        __data_start__ = .;
+        *(vtable)
+        *(.data*)
+
+        . = ALIGN(4);
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        *(.preinit_array)
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(4);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        *(SORT(.init_array.*))
+        *(.init_array)
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(4);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        *(SORT(.fini_array.*))
+        *(.fini_array)
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        *(.jcr)
+        . = ALIGN(4);
+        /* All data end */
+        __data_end__ = .;
+    } > RAM
+
+    /* Non-zeroed BSS.  This section is similar to BSS, with the following two
+     * caveats:
+     *    1. It does not get zeroed at init-time.
+     *    2. You cannot use it as source memory for EasyDMA.
+     *
+     * This section exists because of a hardware defect; see errata 33 and 34
+     * in nrf52 errata sheet.
+     */
+    .bssnz :
+    {
+        . = ALIGN(4);
+        __bssnz_start__ = .;
+        *(.bss.core.nz*)
+        . = ALIGN(4);
+        __bssnz_end__ = .;
+    } > RAM
+
+    .bss :
+    {
+        . = ALIGN(4);
+        __bss_start__ = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(4);
+        __bss_end__ = .;
+    } > RAM
+
+    /* Heap starts after BSS */
+    __HeapBase = .;
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (COPY):
+    {
+        *(.stack*)
+    } > RAM
+
+    _ram_start = ORIGIN(RAM);
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+    PROVIDE(__stack = __StackTop);
+
+    /* Top of head is the bottom of the stack */
+    __HeapLimit = __StackLimit;
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__HeapBase <= __HeapLimit, "region RAM overflowed with stack")
+}
+

http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/cd9214ed/hw/mcu/stm/stm32f4xx/stm32f407.ld
----------------------------------------------------------------------
diff --git a/hw/mcu/stm/stm32f4xx/stm32f407.ld b/hw/mcu/stm/stm32f4xx/stm32f407.ld
new file mode 100644
index 0000000..f193bf5
--- /dev/null
+++ b/hw/mcu/stm/stm32f4xx/stm32f407.ld
@@ -0,0 +1,200 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapBase
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   __coredata_start__
+ *   __coredata_end__
+ *   __corebss_start__
+ *   __corebss_end__
+ *   __ecoredata
+ *   __ecorebss
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    /* Reserve space at the start of the image for the header. */
+    .imghdr (NOLOAD):
+    {
+        . = . + _imghdr_size;
+    } > FLASH
+
+    .text :
+    {
+        __isr_vector_start = .;
+        KEEP(*(.isr_vector))
+        __isr_vector_end = .;
+        *(.text*)
+
+        KEEP(*(.init))
+        KEEP(*(.fini))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        KEEP(*(.eh_frame*))
+    } > FLASH
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > FLASH
+
+    __exidx_end = .;
+
+    __etext = .;
+
+    .vector_relocation :
+    {
+        . = ALIGN(4);
+        __vector_tbl_reloc__ = .;
+        . = . + (__isr_vector_end - __isr_vector_start);
+        . = ALIGN(4);
+    } > RAM
+
+    .coredata : AT (__etext)
+    {
+        __coredata_start__ = .;
+        *(.data.core)
+        . = ALIGN(4);
+        __coredata_end__ = .;
+    } > CCM
+
+    __ecoredata = __etext + SIZEOF(.coredata);
+
+    .data : AT (__ecoredata)
+    {
+        __data_start__ = .;
+        *(vtable)
+        *(.data*)
+
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        KEEP(*(.preinit_array))
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(4);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        KEEP(*(SORT(.init_array.*)))
+        KEEP(*(.init_array))
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(4);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        KEEP(*(SORT(.fini_array.*)))
+        KEEP(*(.fini_array))
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        KEEP(*(.jcr*))
+        . = ALIGN(4);
+        /* All data end */
+        __data_end__ = .;
+
+    } > RAM
+
+    .corebss (NOLOAD):
+    {
+        . = ALIGN(4);
+        __corebss_start__ = .;
+        *(.bss.core)
+        . = ALIGN(4);
+        __corebss_end__ = .;
+        *(.corebss*)
+        *(.bss.core.nz)
+        . = ALIGN(4);
+        __ecorebss = .;
+    } > CCM
+
+    .bss :
+    {
+        . = ALIGN(4);
+        __bss_start__ = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(4);
+        __bss_end__ = .;
+    } > RAM
+
+    __HeapBase = .;
+    __HeapLimit = ORIGIN(RAM) + LENGTH(RAM);
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (COPY):
+    {
+        *(.stack*)
+    } > CCM
+
+    /* Set stack top to end of CCM; stack limit is bottom of stack */
+    __StackTop = ORIGIN(CCM) + LENGTH(CCM);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+    PROVIDE(__stack = __StackTop);
+
+    /* Check for CCM overflow */
+    ASSERT(__StackLimit >= __ecorebss, "CCM overflow!")
+}
+