2011-03-29 Sebastian Huber <sebastian.huber@embedded-brains.de>

* configure.ac, include/bspopts.h.in: New BSP option
	LPC32XX_SCRATCH_AREA_SIZE.  Disable BSP option
	LPC32XX_DISABLE_READ_ONLY_PROTECTION for all BSPs.
	* include/boot.h: Removed application specific defines.
	* include/nand-mlc.h, misc/nand-mlc.c: Changed configuration layout.
	* include/mmu.h, misc/mmu.c: Documentation.  Bugfix.
	* include/bsp.h, startup/bspstarthooks.c, misc/restart.c,
	startup/linkcmds.lpc32xx_mzx, startup/linkcmds.lpc32xx_mzx_stage_1,
	startup/linkcmds.lpc32xx_mzx_stage_2,
	startup/linkcmds.lpc32xx_phycore: Support for scratch area.  Moved
	code into macros for reusability.

c/src/lib/libbsp/arm/lpc32xx/ChangeLog

@@ -1,3 +1,17 @@
+2011-03-29	Sebastian Huber <sebastian.huber@embedded-brains.de>
+
+	* configure.ac, include/bspopts.h.in: New BSP option
+	LPC32XX_SCRATCH_AREA_SIZE.  Disable BSP option
+	LPC32XX_DISABLE_READ_ONLY_PROTECTION for all BSPs.
+	* include/boot.h: Removed application specific defines.
+	* include/nand-mlc.h, misc/nand-mlc.c: Changed configuration layout.
+	* include/mmu.h, misc/mmu.c: Documentation.  Bugfix.
+	* include/bsp.h, startup/bspstarthooks.c, misc/restart.c,
+	startup/linkcmds.lpc32xx_mzx, startup/linkcmds.lpc32xx_mzx_stage_1,
+	startup/linkcmds.lpc32xx_mzx_stage_2,
+	startup/linkcmds.lpc32xx_phycore: Support for scratch area.  Moved
+	code into macros for reusability.
+
 2011-02-21	Sebastian Huber <sebastian.huber@embedded-brains.de>
 
 	* include/bsp.h, lpc32xx/misc/restart.c: Renamed lpc32xx_restart() in

c/src/lib/libbsp/arm/lpc32xx/configure.ac

@@ -73,10 +73,12 @@ RTEMS_BSPOPTS_HELP([LPC32XX_DISABLE_MMU],[disable MMU])
 RTEMS_BSPOPTS_SET([LPC32XX_DISABLE_READ_WRITE_DATA_CACHE],[*],[])
 RTEMS_BSPOPTS_HELP([LPC32XX_DISABLE_READ_WRITE_DATA_CACHE],[disable cache for read-write data sections])
 
-RTEMS_BSPOPTS_SET([LPC32XX_DISABLE_READ_ONLY_PROTECTION],[lpc32xx_mzx*],[1])
 RTEMS_BSPOPTS_SET([LPC32XX_DISABLE_READ_ONLY_PROTECTION],[*],[])
 RTEMS_BSPOPTS_HELP([LPC32XX_DISABLE_READ_ONLY_PROTECTION],[disable MMU protection of read-only sections])
 
+RTEMS_BSPOPTS_SET([LPC32XX_SCRATCH_AREA_SIZE],[lpc32xx_mzx*],[4096])
+RTEMS_BSPOPTS_HELP([LPC32XX_SCRATCH_AREA_SIZE],[size of scratch area])
+
 RTEMS_BSPOPTS_SET([LPC32XX_STOP_GPDMA],[*],[1])
 RTEMS_BSPOPTS_HELP([LPC32XX_STOP_GPDMA],[stop general purpose DMA at start-up to avoid DMA interference])
 

c/src/lib/libbsp/arm/lpc32xx/include/boot.h

@@ -55,9 +55,8 @@ extern "C" {
  * @{
  */
 
-#define LPC32XX_BOOT_STAGE_1_BLOCK_0 0
+#define LPC32XX_BOOT_BLOCK_0 0
-#define LPC32XX_BOOT_STAGE_1_BLOCK_1 1
+#define LPC32XX_BOOT_BLOCK_1 1
-#define LPC32XX_BOOT_STAGE_2_BLOCK_0 2
 
 #define LPC32XX_BOOT_ICR_SP_3AC_8IF 0xf0
 #define LPC32XX_BOOT_ICR_SP_4AC_8IF 0xd2

c/src/lib/libbsp/arm/lpc32xx/include/bsp.h

@@ -135,6 +135,71 @@ extern uint32_t lpc32xx_magic_zero_end [];
  */
 extern uint32_t lpc32xx_magic_zero_size [];
 
+#ifdef LPC32XX_SCRATCH_AREA_SIZE
+  /**
+   * @rief Scratch area.
+   *
+   * The usage is application specific.
+   */
+  extern uint8_t lpc32xx_scratch_area [LPC32XX_SCRATCH_AREA_SIZE];
+#endif
+
+#define LPC32XX_DO_STOP_GPDMA \
+  do { \
+    if ((LPC32XX_DMACLK_CTRL & 0x1) != 0) { \
+      if ((lpc32xx.dma.cfg & LPC_DMA_CFG_EN) != 0) { \
+        int i = 0; \
+        for (i = 0; i < 8; ++i) { \
+          lpc32xx.dma.channels [i].cfg = 0; \
+        } \
+        lpc32xx.dma.cfg &= ~LPC_DMA_CFG_EN; \
+      } \
+      LPC32XX_DMACLK_CTRL = 0; \
+    } \
+  } while (0)
+
+#define LPC32XX_DO_STOP_ETHERNET \
+  do { \
+    if ((LPC32XX_MAC_CLK_CTRL & 0x7) == 0x7) { \
+      lpc32xx.eth.command = 0x38; \
+      lpc32xx.eth.mac1 = 0xcf00; \
+      lpc32xx.eth.mac1 = 0; \
+      LPC32XX_MAC_CLK_CTRL = 0; \
+    } \
+  } while (0)
+
+#define LPC32XX_DO_STOP_USB \
+  do { \
+    if ((LPC32XX_USB_CTRL & 0x010e8000) != 0) { \
+      LPC32XX_OTG_CLK_CTRL = 0; \
+      LPC32XX_USB_CTRL = 0x80000; \
+    } \
+  } while (0)
+
+#define LPC32XX_DO_RESTART(addr) \
+  do { \
+    ARM_SWITCH_REGISTERS; \
+    rtems_interrupt_level level; \
+    uint32_t ctrl = 0; \
+  \
+    rtems_interrupt_disable(level); \
+  \
+    arm_cp15_data_cache_test_and_clean(); \
+    arm_cp15_instruction_cache_invalidate(); \
+  \
+    ctrl = arm_cp15_get_control(); \
+    ctrl &= ~(ARM_CP15_CTRL_I | ARM_CP15_CTRL_C | ARM_CP15_CTRL_M); \
+    arm_cp15_set_control(ctrl); \
+  \
+    __asm__ volatile ( \
+      ARM_SWITCH_TO_ARM \
+      "mov pc, %[addr]\n" \
+      ARM_SWITCH_BACK \
+      : ARM_SWITCH_OUTPUT \
+      : [addr] "r" (addr) \
+    ); \
+  } while (0)
+
 /** @} */
 
 /**

c/src/lib/libbsp/arm/lpc32xx/include/bspopts.h.in

@@ -63,6 +63,9 @@
 /* peripheral clock in Hz */
 #undef LPC32XX_PERIPH_CLK
 
+/* size of scratch area */
+#undef LPC32XX_SCRATCH_AREA_SIZE
+
 /* stop Ethernet controller at start-up to avoid DMA interference */
 #undef LPC32XX_STOP_ETHERNET
 

c/src/lib/libbsp/arm/lpc32xx/include/mmu.h

@@ -7,10 +7,11 @@
  */
 
 /*
- * Copyright (c) 2009
+ * Copyright (c) 2009-2011 embedded brains GmbH.  All rights reserved.
+ *
  *  embedded brains GmbH
  *  Obere Lagerstr. 30
- * D-82178 Puchheim
+ *  82178 Puchheim
  *  Germany
  *  <rtems@embedded-brains.de>
  *
@@ -55,7 +56,12 @@ extern "C" {
 #define LPC32XX_MMU_READ_WRITE_CACHED \
   (LPC32XX_MMU_READ_WRITE | ARM_MMU_SECT_C | ARM_MMU_SECT_B)
 
-void lpc32xx_set_translation_table_entries(
+/**
+ * @brief Sets the @a section_flags for the address range [@a begin, @a end).
+ *
+ * @return Previous section flags of the first modified entry.
+ */
+uint32_t lpc32xx_set_translation_table_entries(
   const void *begin,
   const void *end,
   uint32_t section_flags

c/src/lib/libbsp/arm/lpc32xx/include/nand-mlc.h

@@ -181,22 +181,7 @@ extern "C" {
  * @brief MLC NAND controller configuration.
  */
 typedef struct {
-  /**
+  uint32_t flags;
-   * @brief Selects small pages (512 Bytes user data and 16 Bytes spare data)
-   * or large pages (2048 Bytes user data and 64 Bytes spare data).
-   */
-  bool small_pages;
-
-  /**
-   * @brief Selects 3/4 address cycles for small pages/large pages or 4/5
-   * address cycles.
-   */
-  bool many_address_cycles;
-
-  /**
-   * @brief Selects 64 or 128 pages per block in case of large pages.
-   */
-  bool normal_blocks;
 
   uint32_t block_count;
 
@@ -206,6 +191,23 @@ typedef struct {
   uint32_t time;
 } lpc32xx_mlc_config;
 
+/**
+ * @brief Selects small pages (512 Bytes user data and 16 Bytes spare data)
+ * or large pages (2048 Bytes user data and 64 Bytes spare data).
+ */
+#define MLC_SMALL_PAGES 0x1U
+
+/**
+ * @Brief Selects 3/4 address cycles for small pages/large pages or 4/5
+ * address cycles.
+ */
+#define MLC_MANY_ADDRESS_CYCLES 0x2U
+
+/**
+ * @brief Selects 64 or 128 pages per block in case of large pages.
+ */
+#define MLC_NORMAL_BLOCKS 0x4U
+
 /**
  * @brief Initializes the MLC NAND controller according to @a cfg.
  */

c/src/lib/libbsp/arm/lpc32xx/misc/mmu.c

@@ -7,7 +7,7 @@
  */
 
 /*
- * Copyright (c) 2010 embedded brains GmbH.  All rights reserved.
+ * Copyright (c) 2010-2011 embedded brains GmbH.  All rights reserved.
  *
  *  embedded brains GmbH
  *  Obere Lagerstr. 30
@@ -22,7 +22,26 @@
 
 #include <bsp/mmu.h>
 
-void lpc32xx_set_translation_table_entries(
+static uint32_t disable_mmu(void)
+{
+  uint32_t ctrl = 0;
+
+  arm_cp15_data_cache_test_and_clean_and_invalidate();
+
+  ctrl = arm_cp15_get_control();
+  arm_cp15_set_control(ctrl & ~ARM_CP15_CTRL_M);
+
+  arm_cp15_tlb_invalidate();
+
+  return ctrl;
+}
+
+static void restore_mmu_control(uint32_t ctrl)
+{
+  arm_cp15_set_control(ctrl);
+}
+
+uint32_t set_translation_table_entries(
   const void *begin,
   const void *end,
   uint32_t section_flags
@@ -31,9 +50,32 @@ void lpc32xx_set_translation_table_entries(
   uint32_t *ttb = arm_cp15_get_translation_table_base();
   uint32_t i = ARM_MMU_SECT_GET_INDEX(begin);
   uint32_t iend = ARM_MMU_SECT_GET_INDEX(ARM_MMU_SECT_MVA_ALIGN_UP(end));
+  uint32_t ctrl = disable_mmu();
+  uint32_t section_flags_of_first_entry = ttb [i];
 
   while (i < iend) {
     ttb [i] = (i << ARM_MMU_SECT_BASE_SHIFT) | section_flags;
     ++i;
   }
+
+  restore_mmu_control(ctrl);
+
+  return section_flags_of_first_entry;
+}
+
+uint32_t lpc32xx_set_translation_table_entries(
+  const void *begin,
+  const void *end,
+  uint32_t section_flags
+)
+{
+  rtems_interrupt_level level;
+  uint32_t section_flags_of_first_entry = 0;
+
+  rtems_interrupt_disable(level);
+  section_flags_of_first_entry =
+    set_translation_table_entries(begin, end, section_flags);
+  rtems_interrupt_enable(level);
+
+  return section_flags_of_first_entry;
 }

c/src/lib/libbsp/arm/lpc32xx/misc/nand-mlc.c

@@ -24,19 +24,30 @@
 
 static volatile lpc32xx_nand_mlc *const mlc = &lpc32xx.nand_mlc;
 
-static bool mlc_small_pages;
+static uint32_t mlc_flags;
-
-static bool mlc_many_address_cycles;
-
-static bool mlc_normal_blocks;
 
 static uint32_t mlc_block_count;
 
 static uint32_t mlc_page_count;
 
+static bool mlc_small_pages(void)
+{
+  return (mlc_flags & MLC_SMALL_PAGES) != 0;
+}
+
+static bool mlc_many_address_cycles(void)
+{
+  return (mlc_flags & MLC_MANY_ADDRESS_CYCLES) != 0;
+}
+
+static bool mlc_normal_blocks(void)
+{
+  return (mlc_flags & MLC_NORMAL_BLOCKS) != 0;
+}
+
 uint32_t lpc32xx_mlc_page_size(void)
 {
-  if (mlc_small_pages) {
+  if (mlc_small_pages()) {
     return 512;
   } else {
     return 2048;
@@ -45,10 +56,10 @@ uint32_t lpc32xx_mlc_page_size(void)
 
 uint32_t lpc32xx_mlc_pages_per_block(void)
 {
-  if (mlc_small_pages) {
+  if (mlc_small_pages()) {
     return 32;
   } else {
-    if (mlc_normal_blocks) {
+    if (mlc_normal_blocks()) {
       return 64;
     } else {
       return 128;
@@ -99,23 +110,23 @@ static bool mlc_was_operation_successful(void)
 
 static void mlc_set_block_address(uint32_t block_index)
 {
-  if (mlc_small_pages) {
+  if (mlc_small_pages()) {
     mlc->addr = (uint8_t) (block_index << 5);
     mlc->addr = (uint8_t) (block_index >> 3);
-    if (mlc_many_address_cycles) {
+    if (mlc_many_address_cycles()) {
       mlc->addr = (uint8_t) (block_index >> 11);
     }
   } else {
-    if (mlc_normal_blocks) {
+    if (mlc_normal_blocks()) {
       mlc->addr = (uint8_t) (block_index << 6);
       mlc->addr = (uint8_t) (block_index >> 2);
-      if (mlc_many_address_cycles) {
+      if (mlc_many_address_cycles()) {
         mlc->addr = (uint8_t) (block_index >> 10);
       }
     } else {
       mlc->addr = (uint8_t) (block_index << 7);
       mlc->addr = (uint8_t) (block_index >> 1);
-      if (mlc_many_address_cycles) {
+      if (mlc_many_address_cycles()) {
         mlc->addr = (uint8_t) (block_index >> 9);
       }
     }
@@ -125,17 +136,17 @@ static void mlc_set_block_address(uint32_t block_index)
 static void mlc_set_page_address(uint32_t page_index)
 {
   mlc->addr = 0;
-  if (mlc_small_pages) {
+  if (mlc_small_pages()) {
     mlc->addr = (uint8_t) page_index;
     mlc->addr = (uint8_t) (page_index >> 8);
-    if (mlc_many_address_cycles) {
+    if (mlc_many_address_cycles()) {
       mlc->addr = (uint8_t) (page_index >> 16);
     }
   } else {
     mlc->addr = 0;
     mlc->addr = (uint8_t) page_index;
     mlc->addr = (uint8_t) (page_index >> 8);
-    if (mlc_many_address_cycles) {
+    if (mlc_many_address_cycles()) {
       mlc->addr = (uint8_t) (page_index >> 16);
     }
   }
@@ -145,9 +156,7 @@ void lpc32xx_mlc_init(const lpc32xx_mlc_config *cfg)
 {
   uint32_t icr = 0;
 
-  mlc_small_pages = cfg->small_pages;
+  mlc_flags = cfg->flags;
-  mlc_many_address_cycles = cfg->many_address_cycles;
-  mlc_normal_blocks = cfg->normal_blocks;
   mlc_block_count = cfg->block_count;
   mlc_page_count = cfg->block_count * lpc32xx_mlc_pages_per_block();
 
@@ -159,10 +168,10 @@ void lpc32xx_mlc_init(const lpc32xx_mlc_config *cfg)
   mlc->time = cfg->time;
 
   /* Configuration */
-  if (!mlc_small_pages) {
+  if (!mlc_small_pages()) {
     icr |= MLC_ICR_LARGE_PAGES;
   }
-  if (mlc_many_address_cycles) {
+  if (mlc_many_address_cycles()) {
     icr |= MLC_ICR_ADDR_WORD_COUNT_4_5;
   }
   mlc_unlock();
@@ -191,7 +200,7 @@ rtems_status_code lpc32xx_mlc_read_page(
 )
 {
   rtems_status_code sc = RTEMS_SUCCESSFUL;
-  size_t small_pages_count = mlc_small_pages ? 1 : MLC_SMALL_PAGES_PER_LARGE_PAGE;
+  size_t small_pages_count = mlc_small_pages() ? 1 : MLC_SMALL_PAGES_PER_LARGE_PAGE;
   size_t sp = 0;
   size_t i = 0;
   uint32_t isr = 0;
@@ -202,7 +211,7 @@ rtems_status_code lpc32xx_mlc_read_page(
 
   mlc_wait_until_ready();
   mlc->cmd = 0x00;
-  if (!mlc_small_pages) {
+  if (!mlc_small_pages()) {
     mlc->cmd = 0x30;
   }
   mlc_set_page_address(page_index);
@@ -284,7 +293,7 @@ rtems_status_code lpc32xx_mlc_write_page_with_ecc(
 )
 {
   rtems_status_code sc = RTEMS_IO_ERROR;
-  size_t small_pages_count = mlc_small_pages ? 1 : MLC_SMALL_PAGES_PER_LARGE_PAGE;
+  size_t small_pages_count = mlc_small_pages() ? 1 : MLC_SMALL_PAGES_PER_LARGE_PAGE;
   size_t sp = 0;
   size_t i = 0;
 

c/src/lib/libbsp/arm/lpc32xx/misc/restart.c

@@ -30,24 +30,5 @@
 
 void bsp_restart(void *addr)
 {
-  ARM_SWITCH_REGISTERS;
+  LPC32XX_DO_RESTART(addr);
-  rtems_interrupt_level level;
-  uint32_t ctrl = 0;
-
-  rtems_interrupt_disable(level);
-
-  arm_cp15_data_cache_test_and_clean();
-  arm_cp15_instruction_cache_invalidate();
-
-  ctrl = arm_cp15_get_control();
-  ctrl &= ~(ARM_CP15_CTRL_I | ARM_CP15_CTRL_C | ARM_CP15_CTRL_M);
-  arm_cp15_set_control(ctrl);
-
-  __asm__ volatile (
-    ARM_SWITCH_TO_ARM
-    "mov pc, %[addr]\n"
-    ARM_SWITCH_BACK
-    : ARM_SWITCH_OUTPUT
-    : [addr] "r" (addr)
-  );
 }

c/src/lib/libbsp/arm/lpc32xx/startup/bspstarthooks.c

@@ -73,6 +73,12 @@ static void BSP_START_TEXT_SECTION clear_bss(void)
       .begin = (uint32_t) bsp_section_fast_data_begin,
       .end = (uint32_t) bsp_section_fast_data_end,
       .flags = LPC32XX_MMU_READ_WRITE_DATA
+#ifdef LPC32XX_SCRATCH_AREA_SIZE
+    }, {
+      .begin = (uint32_t) &lpc32xx_scratch_area [0],
+      .end = (uint32_t) &lpc32xx_scratch_area [LPC32XX_SCRATCH_AREA_SIZE],
+      .flags = LPC32XX_MMU_READ_ONLY_DATA
+#endif
     }, {
       .begin = (uint32_t) bsp_section_start_begin,
       .end = (uint32_t) bsp_section_start_end,
@@ -224,34 +230,15 @@ void BSP_START_TEXT_SECTION bsp_start_hook_0(void)
 static void BSP_START_TEXT_SECTION stop_dma_activities(void)
 {
   #ifdef LPC32XX_STOP_GPDMA
-    if ((LPC32XX_DMACLK_CTRL & 0x1) != 0) {
+    LPC32XX_DO_STOP_GPDMA;
-      if ((lpc32xx.dma.cfg & LPC_DMA_CFG_EN) != 0) {
-        int i = 0;
-
-        for (i = 0; i < 8; ++i) {
-          lpc32xx.dma.channels [i].cfg = 0;
-        }
-
-        lpc32xx.dma.cfg &= ~LPC_DMA_CFG_EN;
-      }
-      LPC32XX_DMACLK_CTRL = 0;
-    }
   #endif
 
   #ifdef LPC32XX_STOP_ETHERNET
-    if ((LPC32XX_MAC_CLK_CTRL & 0x7) == 0x7) {
+    LPC32XX_DO_STOP_ETHERNET;
-      lpc32xx.eth.command = 0x38;
-      lpc32xx.eth.mac1 = 0xcf00;
-      lpc32xx.eth.mac1 = 0;
-      LPC32XX_MAC_CLK_CTRL = 0;
-    }
   #endif
 
   #ifdef LPC32XX_STOP_USB
-    if ((LPC32XX_USB_CTRL & 0x010e8000) != 0) {
+    LPC32XX_DO_STOP_USB;
-      LPC32XX_OTG_CLK_CTRL = 0;
-      LPC32XX_USB_CTRL = 0x80000;
-    }
   #endif
 }
 

c/src/lib/libbsp/arm/lpc32xx/startup/linkcmds.lpc32xx_mzx

@@ -37,7 +37,8 @@
 MEMORY {
 	RAM_INT : ORIGIN = 0x08000000, LENGTH = 256k
 	RAM_MMU : ORIGIN = 0x80000000, LENGTH = 16k /* SDRAM on DYCS0 */
-	RAM_EXT : ORIGIN = 0x80004000, LENGTH = 32M - 16k /* SDRAM on DYCS0 */
+	RAM_SCRATCH : ORIGIN = 0x80004000, LENGTH = 4k /* SDRAM on DYCS0 */
+	RAM_EXT : ORIGIN = 0x80005000, LENGTH = 32M - 20k /* SDRAM on DYCS0 */
 	NIRVANA : ORIGIN = 0, LENGTH = 0
 }
 
@@ -57,9 +58,11 @@ REGION_ALIAS ("REGION_BSS", RAM_EXT);
 REGION_ALIAS ("REGION_WORK", RAM_EXT);
 REGION_ALIAS ("REGION_STACK", RAM_INT);
 
+lpc32xx_scratch_area = ORIGIN (RAM_SCRATCH);
+
 bsp_stack_irq_size = DEFINED (bsp_stack_irq_size) ? bsp_stack_irq_size : 4096;
 bsp_stack_abt_size = DEFINED (bsp_stack_abt_size) ? bsp_stack_abt_size : 1024;
 
-bsp_section_robarrier_align = DEFINED (bsp_section_robarrier_align) ? bsp_section_robarrier_align : 1M;
+bsp_section_rwbarrier_align = DEFINED (bsp_section_rwbarrier_align) ? bsp_section_rwbarrier_align : 1M;
 
 INCLUDE linkcmds.lpc32xx

c/src/lib/libbsp/arm/lpc32xx/startup/linkcmds.lpc32xx_mzx_stage_1

@@ -38,6 +38,7 @@ MEMORY {
 	RAM_INT : ORIGIN = 0x08000000, LENGTH = 232k
 	RAM_VEC : ORIGIN = 0x0803a000, LENGTH = 8k
 	RAM_MMU : ORIGIN = 0x0803c000, LENGTH = 16k
+	RAM_SCRATCH : ORIGIN = 0x80004000, LENGTH = 4k /* SDRAM on DYCS0 */
 	NIRVANA : ORIGIN = 0, LENGTH = 0
 }
 
@@ -57,6 +58,8 @@ REGION_ALIAS ("REGION_BSS", RAM_INT);
 REGION_ALIAS ("REGION_WORK", RAM_INT);
 REGION_ALIAS ("REGION_STACK", RAM_INT);
 
+lpc32xx_scratch_area = ORIGIN (RAM_SCRATCH);
+
 bsp_stack_svc_size = DEFINED (bsp_stack_svc_size) ? bsp_stack_svc_size : 7296;
 
 bsp_vector_table_in_start_section = 1;

c/src/lib/libbsp/arm/lpc32xx/startup/linkcmds.lpc32xx_mzx_stage_2

@@ -35,9 +35,11 @@
  */
 
 MEMORY {
-	RAM_INT : ORIGIN = 0x08000000, LENGTH = 256k
+	RAM_INT : ORIGIN = 0x08000000, LENGTH = 240k
-	RAM_MMU : ORIGIN = 0x81c00000, LENGTH = 16k /* SDRAM on DYCS0 */
+	RAM_FAST : ORIGIN = 0x0803c000, LENGTH = 16k
-	RAM_EXT : ORIGIN = 0x81c04000, LENGTH = 4M - 16k /* SDRAM on DYCS0 */
+	RAM_MMU : ORIGIN = 0x80000000, LENGTH = 16k /* SDRAM on DYCS0 */
+	RAM_SCRATCH : ORIGIN = 0x80004000, LENGTH = 4k /* SDRAM on DYCS0 */
+	RAM_EXT : ORIGIN = 0x81c00000, LENGTH = 4M /* SDRAM on DYCS0 */
 	NIRVANA : ORIGIN = 0, LENGTH = 0
 }
 
@@ -49,14 +51,16 @@ REGION_ALIAS ("REGION_RODATA", RAM_EXT);
 REGION_ALIAS ("REGION_RODATA_LOAD", RAM_EXT);
 REGION_ALIAS ("REGION_DATA", RAM_EXT);
 REGION_ALIAS ("REGION_DATA_LOAD", RAM_EXT);
-REGION_ALIAS ("REGION_FAST_TEXT", RAM_EXT);
+REGION_ALIAS ("REGION_FAST_TEXT", RAM_FAST);
 REGION_ALIAS ("REGION_FAST_TEXT_LOAD", RAM_EXT);
-REGION_ALIAS ("REGION_FAST_DATA", RAM_EXT);
+REGION_ALIAS ("REGION_FAST_DATA", RAM_FAST);
 REGION_ALIAS ("REGION_FAST_DATA_LOAD", RAM_EXT);
 REGION_ALIAS ("REGION_BSS", RAM_EXT);
 REGION_ALIAS ("REGION_WORK", RAM_EXT);
 REGION_ALIAS ("REGION_STACK", RAM_INT);
 
+lpc32xx_scratch_area = ORIGIN (RAM_SCRATCH);
+
 bsp_stack_svc_size = DEFINED (bsp_stack_svc_size) ? bsp_stack_svc_size : 8192;
 
 INCLUDE linkcmds.lpc32xx

c/src/lib/libbsp/arm/lpc32xx/startup/linkcmds.lpc32xx_phycore

@@ -62,6 +62,6 @@ REGION_ALIAS ("REGION_STACK", RAM_INT);
 bsp_stack_irq_size = DEFINED (bsp_stack_irq_size) ? bsp_stack_irq_size : 4096;
 bsp_stack_abt_size = DEFINED (bsp_stack_abt_size) ? bsp_stack_abt_size : 1024;
 
-bsp_section_robarrier_align = DEFINED (bsp_section_robarrier_align) ? bsp_section_robarrier_align : 1M;
+bsp_section_rwbarrier_align = DEFINED (bsp_section_rwbarrier_align) ? bsp_section_rwbarrier_align : 1M;
 
 INCLUDE linkcmds.lpc32xx