diff --git a/bsp/imxrt1052-evk/imxrt1052_sdram.icf b/bsp/imxrt1052-evk/imxrt1052_sdram.icf
deleted file mode 100644
index 6d431b6a7f..0000000000
--- a/bsp/imxrt1052-evk/imxrt1052_sdram.icf
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
-** ###################################################################
-**     Processor:           MIMXRT1052DVL6A
-**     Compiler:            IAR ANSI C/C++ Compiler for ARM
-**     Reference manual:    i.MX 6RT for ROM
-**     Version:             rev. 0.1, 2017-01-10
-**     Build:               b170608
-**
-**     Abstract:
-**         Linker file for the IAR ANSI C/C++ Compiler for ARM
-**
-**     Copyright 2016 Freescale Semiconductor, Inc.
-**     Copyright 2016-2017 NXP
-**     Redistribution and use in source and binary forms, with or without modification,
-**     are permitted provided that the following conditions are met:
-**
-**     1. Redistributions of source code must retain the above copyright notice, this list
-**       of conditions and the following disclaimer.
-**
-**     2. Redistributions in binary form must reproduce the above copyright notice, this
-**       list of conditions and the following disclaimer in the documentation and/or
-**       other materials provided with the distribution.
-**
-**     3. Neither the name of the copyright holder nor the names of its
-**       contributors may be used to endorse or promote products derived from this
-**       software without specific prior written permission.
-**
-**     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-**     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-**     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-**     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
-**     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-**     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-**     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-**     ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-**     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-**     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-**     http:                 www.nxp.com
-**     mail:                 support@nxp.com
-**
-** ###################################################################
-*/
-
-define symbol m_base_addr              = 0x00000000;
-
-define symbol m_interrupts_start       = 0x00000000 + m_base_addr;
-define symbol m_interrupts_end         = 0x000003FF + m_base_addr;
-
-define symbol m_text_start             = 0x00000400 + m_base_addr;
-define symbol m_text_end               = 0x0007FFFF + m_base_addr;
-
-define symbol m_data_start             = 0x80000000;
-define symbol m_data_end               = 0x81DFFFFF;
-
-define symbol m_ncache_start           = 0x81E00000;
-define symbol m_ncache_end             = 0x81FFFFFF;
-
-/* Sizes */
-if (isdefinedsymbol(__stack_size__)) {
-  define symbol __size_cstack__        = __stack_size__;
-} else {
-  define symbol __size_cstack__        = 0x0400;
-}
-
-if (isdefinedsymbol(__heap_size__)) {
-  define symbol __size_heap__          = __heap_size__;
-} else {
-  define symbol __size_heap__          = 0x0400;
-}
-
-define exported symbol __VECTOR_TABLE  = m_interrupts_start;
-define exported symbol __VECTOR_RAM    = m_interrupts_start;
-define exported symbol __RAM_VECTOR_TABLE_SIZE = 0x0;
-
-define memory mem with size = 4G;
-define region TEXT_region = mem:[from m_interrupts_start to m_interrupts_end]
-                          | mem:[from m_text_start to m_text_end];
-define region DATA_region = mem:[from m_data_start to m_data_end-__size_cstack__];
-define region CSTACK_region = mem:[from m_data_end-__size_cstack__+1 to m_data_end];
-define region NCACHE_region = mem:[from m_ncache_start to m_ncache_end];
-
-define block CSTACK    with alignment = 8, size = __size_cstack__   { };
-define block HEAP      with alignment = 8, size = __size_heap__     { };
-define block RW        { readwrite };
-define block ZI        { zi };
-define block RTT_INIT_FUNC with fixed order { readonly section .rti_fn* };
-define block NCACHE_VAR with size = 0x200000 , alignment = 0x100000  { section NonCacheable , section NonCacheable.init };
-
-initialize by copy { readwrite, section .textrw };
-do not initialize  { section .noinit };
-
-keep { section FSymTab };
-keep { section VSymTab };
-keep { section .rti_fn* };
-
-place at address mem: m_interrupts_start    { readonly section .intvec };
-place in TEXT_region                        { readonly, block RTT_INIT_FUNC  };
-place in DATA_region                        { block RW };
-place in DATA_region                        { block ZI };
-place in DATA_region                        { last block HEAP };
-place in CSTACK_region                      { block CSTACK };
-place in NCACHE_region                      { block NCACHE_VAR };
diff --git a/bsp/imxrt1052-evk/imxrt1052_sdram.sct b/bsp/imxrt1052-evk/imxrt1052_sdram.sct
deleted file mode 100644
index 16f8588351..0000000000
--- a/bsp/imxrt1052-evk/imxrt1052_sdram.sct
+++ /dev/null
@@ -1,99 +0,0 @@
-#! armcc -E
-/*
-** ###################################################################
-**     Processors:          MIMXRT1052CVL5A
-**                          MIMXRT1052DVL6A
-**
-**     Compiler:            Keil ARM C/C++ Compiler
-**     Reference manual:    IMXRT1050RM Rev.C, 08/2017
-**     Version:             rev. 0.1, 2017-01-10
-**     Build:               b170927
-**
-**     Abstract:
-**         Linker file for the Keil ARM C/C++ Compiler
-**
-**     Copyright 2016 Freescale Semiconductor, Inc.
-**     Copyright 2016-2017 NXP
-**     Redistribution and use in source and binary forms, with or without modification,
-**     are permitted provided that the following conditions are met:
-**
-**     1. Redistributions of source code must retain the above copyright notice, this list
-**       of conditions and the following disclaimer.
-**
-**     2. Redistributions in binary form must reproduce the above copyright notice, this
-**       list of conditions and the following disclaimer in the documentation and/or
-**       other materials provided with the distribution.
-**
-**     3. Neither the name of the copyright holder nor the names of its
-**       contributors may be used to endorse or promote products derived from this
-**       software without specific prior written permission.
-**
-**     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-**     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-**     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-**     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
-**     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-**     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-**     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-**     ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-**     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-**     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-**     http:                 www.nxp.com
-**     mail:                 support@nxp.com
-**
-** ###################################################################
-*/
-
-#define m_start_address				   0x00000000
-
-#define m_interrupts_start             (0x00000000 + m_start_address)
-#define m_interrupts_size              0x00000400
-
-#define m_text_start                   (m_interrupts_start + m_interrupts_size)
-#define m_text_size                    0x0001FC00
-
-#define m_data_start                   0x80000000
-#define m_data_size                    0x01E00000
-
-#define m_ncache_start                 0x81E00000
-#define m_ncache_size                  0x00200000
-
-/* Sizes */
-#if (defined(__stack_size__))
-  #define Stack_Size                   __stack_size__
-#else
-  #define Stack_Size                   0x0400
-#endif
-
-#if (defined(__heap_size__))
-  #define Heap_Size                    __heap_size__
-#else
-  #define Heap_Size                    0x0400
-#endif
-
-LR_m_text m_text_start m_text_size {   ; load region size_region
-  ER_m_text m_text_start m_text_size { ; load address = execution address
-    * (InRoot$$Sections)
-    .ANY (+RO)
-  }
-  RW_m_data m_data_start m_data_size-Stack_Size-Heap_Size { ; RW data
-    .ANY (+RW +ZI)
-  }
-  RW_m_ncache m_ncache_start m_ncache_size { ; ncache RW data
-    * (NonCacheable.init)
-    * (NonCacheable)
-  }
-  ARM_LIB_HEAP +0 EMPTY Heap_Size {    ; Heap region growing up
-  }
-  ARM_LIB_STACK m_data_start+m_data_size EMPTY -Stack_Size { ; Stack region growing down
-  }
-}
-
-LR_m_interrupts m_interrupts_start m_interrupts_size {
-  VECTOR_ROM m_interrupts_start m_interrupts_size { ; load address = execution address
-    * (RESET,+FIRST)
-  }
-}
-
-
diff --git a/bsp/imxrt1052-evk/rtconfig.py b/bsp/imxrt1052-evk/rtconfig.py
index 27718a2484..ad41902c1a 100644
--- a/bsp/imxrt1052-evk/rtconfig.py
+++ b/bsp/imxrt1052-evk/rtconfig.py
@@ -77,7 +77,7 @@ elif PLATFORM == 'armcc':
     DEVICE = ' --cpu Cortex-M7.fp.sp'
     CFLAGS = DEVICE + ' --apcs=interwork'
     AFLAGS = DEVICE
-    LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread-imxrt.map --scatter imxrt1052_sdram.sct'
+    LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread-imxrt.map --scatter ./Libraries/arm/MIMXRT1052xxxxx_flexspi_nor.scf'
 
     CFLAGS += ' --c99  --diag_suppress=66,1296,186'
     CFLAGS += ' -I' + EXEC_PATH + '/ARM/RV31/INC'
@@ -128,7 +128,7 @@ elif PLATFORM == 'iar':
     AFLAGS += ' --cpu Cortex-M7'
     AFLAGS += ' --fpu None'
 
-    LFLAGS = ' --config imxrt1052_sdram.icf'
+    LFLAGS = ' --config ./Libraries/iar/MIMXRT1052xxxxx_flexspi_nor.icf'
     LFLAGS += ' --redirect _Printf=_PrintfTiny'
     LFLAGS += ' --redirect _Scanf=_ScanfSmall'
     LFLAGS += ' --entry __iar_program_start'
diff --git a/bsp/imxrt1052-evk/sdram_init.jlinkscript b/bsp/imxrt1052-evk/sdram_init.jlinkscript
deleted file mode 100644
index b33ff301a9..0000000000
--- a/bsp/imxrt1052-evk/sdram_init.jlinkscript
+++ /dev/null
@@ -1,311 +0,0 @@
-/*********************************************************************
-*              SEGGER MICROCONTROLLER GmbH & Co. K.G.                *
-*        Solutions for real time microcontroller applications        *
-**********************************************************************
-*                                                                    *
-*        (c) 2011-2015 SEGGER Microcontroller GmbH & Co. KG          *
-*                                                                    *
-* Internet: www.segger.com Support: support@segger.com               *
-*                                                                    *
-**********************************************************************
-----------------------------------------------------------------------
-Purpose : 
----------------------------END-OF-HEADER------------------------------
-*/
-
-void Clock_Init() {
-  // Enable all clocks
-  MEM_WriteU32(0x400FC068,0xffffffff);
-  MEM_WriteU32(0x400FC06C,0xffffffff);
-  MEM_WriteU32(0x400FC070,0xffffffff);
-  MEM_WriteU32(0x400FC074,0xffffffff);
-  MEM_WriteU32(0x400FC078,0xffffffff);
-  MEM_WriteU32(0x400FC07C,0xffffffff);
-  MEM_WriteU32(0x400FC080,0xffffffff);
-
-  MEM_WriteU32(0x400D8030,0x00002001);
-  MEM_WriteU32(0x400D8100,0x00100000);
-  MEM_WriteU32(0x400FC014,0x00050D40);
-
-  Report("Clock Init Done");
-}
-
-void SDRAM_WaitIpCmdDone(void) 
-{
-  unsigned int reg;
-  do
-  {
-      reg = MEM_ReadU32(0x402F003C);
-  }while((reg & 0x3) == 0);
-}
-
-void SDRAM_Init() {
-  // Config IOMUX for SDRAM
-  MEM_WriteU32(0x401F8014,0x00000000);
-  MEM_WriteU32(0x401F8018,0x00000000);
-  MEM_WriteU32(0x401F801C,0x00000000);
-  MEM_WriteU32(0x401F8020,0x00000000);
-  MEM_WriteU32(0x401F8024,0x00000000);
-  MEM_WriteU32(0x401F8028,0x00000000);
-  MEM_WriteU32(0x401F802C,0x00000000);
-  MEM_WriteU32(0x401F8030,0x00000000);
-  MEM_WriteU32(0x401F8034,0x00000000);
-  MEM_WriteU32(0x401F8038,0x00000000);
-  MEM_WriteU32(0x401F803C,0x00000000);
-  MEM_WriteU32(0x401F8040,0x00000000);
-  MEM_WriteU32(0x401F8044,0x00000000);
-  MEM_WriteU32(0x401F8048,0x00000000);
-  MEM_WriteU32(0x401F804C,0x00000000);
-  MEM_WriteU32(0x401F8050,0x00000000);
-  MEM_WriteU32(0x401F8054,0x00000000);
-  MEM_WriteU32(0x401F8058,0x00000000);
-  MEM_WriteU32(0x401F805C,0x00000000);
-  MEM_WriteU32(0x401F8060,0x00000000);
-  MEM_WriteU32(0x401F8064,0x00000000);
-  MEM_WriteU32(0x401F8068,0x00000000);
-  MEM_WriteU32(0x401F806C,0x00000000);
-  MEM_WriteU32(0x401F8070,0x00000000);
-  MEM_WriteU32(0x401F8074,0x00000000);
-  MEM_WriteU32(0x401F8078,0x00000000);
-  MEM_WriteU32(0x401F807C,0x00000000);
-  MEM_WriteU32(0x401F8080,0x00000000);
-  MEM_WriteU32(0x401F8084,0x00000000);
-  MEM_WriteU32(0x401F8088,0x00000000);
-  MEM_WriteU32(0x401F808C,0x00000000);
-  MEM_WriteU32(0x401F8090,0x00000000);
-  MEM_WriteU32(0x401F8094,0x00000000);
-  MEM_WriteU32(0x401F8098,0x00000000);
-  MEM_WriteU32(0x401F809C,0x00000000);
-  MEM_WriteU32(0x401F80A0,0x00000000);
-  MEM_WriteU32(0x401F80A4,0x00000000);
-  MEM_WriteU32(0x401F80A8,0x00000000);
-  MEM_WriteU32(0x401F80AC,0x00000000);
-  MEM_WriteU32(0x401F80B0,0x00000000);
-  MEM_WriteU32(0x401F80B4,0x00000000);
-  MEM_WriteU32(0x401F80B8,0x00000000);
-  
-  // PAD ctrl
-  MEM_WriteU32(0x401F8204,0x000000F1);
-  MEM_WriteU32(0x401F8208,0x000000F1);
-  MEM_WriteU32(0x401F820C,0x000000F1);
-  MEM_WriteU32(0x401F8210,0x000000F1);
-  MEM_WriteU32(0x401F8214,0x000000F1);
-  MEM_WriteU32(0x401F8218,0x000000F1);
-  MEM_WriteU32(0x401F821C,0x000000F1);
-  MEM_WriteU32(0x401F8220,0x000000F1);
-  MEM_WriteU32(0x401F8224,0x000000F1);
-  MEM_WriteU32(0x401F8228,0x000000F1);
-  MEM_WriteU32(0x401F822C,0x000000F1);
-  MEM_WriteU32(0x401F8230,0x000000F1);
-  MEM_WriteU32(0x401F8234,0x000000F1);
-  MEM_WriteU32(0x401F8238,0x000000F1);
-  MEM_WriteU32(0x401F823C,0x000000F1);
-  MEM_WriteU32(0x401F8240,0x000000F1);
-  MEM_WriteU32(0x401F8244,0x000000F1);
-  MEM_WriteU32(0x401F8248,0x000000F1);
-  MEM_WriteU32(0x401F824C,0x000000F1);
-  MEM_WriteU32(0x401F8250,0x000000F1);
-  MEM_WriteU32(0x401F8254,0x000000F1);
-  MEM_WriteU32(0x401F8258,0x000000F1);
-  MEM_WriteU32(0x401F825C,0x000000F1);
-  MEM_WriteU32(0x401F8260,0x000000F1);
-  MEM_WriteU32(0x401F8264,0x000000F1);
-  MEM_WriteU32(0x401F8268,0x000000F1);
-  MEM_WriteU32(0x401F826C,0x000000F1);
-  MEM_WriteU32(0x401F8270,0x000000F1);
-  MEM_WriteU32(0x401F8274,0x000000F1);
-  MEM_WriteU32(0x401F8278,0x000000F1);
-  MEM_WriteU32(0x401F827C,0x000000F1);
-  MEM_WriteU32(0x401F8280,0x000000F1);
-  MEM_WriteU32(0x401F8284,0x000000F1);
-  MEM_WriteU32(0x401F8288,0x000000F1);
-  MEM_WriteU32(0x401F828C,0x000000F1);
-  MEM_WriteU32(0x401F8290,0x000000F1);
-  MEM_WriteU32(0x401F8294,0x000000F1);
-  MEM_WriteU32(0x401F8298,0x000000F1);
-  MEM_WriteU32(0x401F829C,0x000000F1);
-  MEM_WriteU32(0x401F82A0,0x000000F1);
-  MEM_WriteU32(0x401F82A4,0x000000F1);
-  MEM_WriteU32(0x401F82A8,0x000000F1);
-
-  // Config SEMC
-  MEM_WriteU32(0x402F0000,0x1000E000);
-  MEM_WriteU32(0x402F0008,0x00030524);
-  MEM_WriteU32(0x402F000C,0x06030524);
-  MEM_WriteU32(0x402F0010,0x8000001B);
-  MEM_WriteU32(0x402F0014,0x90000021);
-  MEM_WriteU32(0x402F0004,0x00000008);
-  MEM_WriteU32(0x402F0040,0x00000B27);
-  MEM_WriteU32(0x402F0044,0x00100100);
-  MEM_WriteU32(0x402F0048,0x00020201);
-  MEM_WriteU32(0x402F004C,0x08193D0E);
-  MEM_WriteU32(0x402F0080,0x00000021);
-  MEM_WriteU32(0x402F0084,0x00888888);
-  MEM_WriteU32(0x402F0094,0x00000002);
-  MEM_WriteU32(0x402F0098,0x00000000);
-
-  MEM_WriteU32(0x402F0090,0x80000000);
-  MEM_WriteU32(0x402F009C,0xA55A000F);
-  SDRAM_WaitIpCmdDone();
-  MEM_WriteU32(0x402F0090,0x80000000);
-  MEM_WriteU32(0x402F009C,0xA55A000C);
-  SDRAM_WaitIpCmdDone();
-  MEM_WriteU32(0x402F0090,0x80000000);
-  MEM_WriteU32(0x402F009C,0xA55A000C);
-  SDRAM_WaitIpCmdDone();
-  MEM_WriteU32(0x402F00A0,0x00000022);
-  MEM_WriteU32(0x402F0090,0x80000000);
-  MEM_WriteU32(0x402F009C,0xA55A000A);
-  SDRAM_WaitIpCmdDone();
-    
-  Report("SDRAM Init Done");
-}
-
-/* MPU configuration */
-void MPU_Init()
-{
-    unsigned int rbar0;
-    unsigned int rbar1;
-    unsigned int rbar2;
-	unsigned int rbar3;
-    unsigned int rbar4;
-    unsigned int rbar5;
-	unsigned int rbar6;
-    unsigned int rasr0;
-    unsigned int rasr1;
-    unsigned int rasr2;
-    unsigned int rasr3;
-    unsigned int rasr4;
-    unsigned int rasr5;
-    unsigned int rasr6;
-    unsigned int ctrl;
-
-    rbar0 = ((0xC0000000 & ((0x7FFFFFF << 5))) | (1 << 4) | (0 << 0));
-    rbar1 = ((0x80000000 & ((0x7FFFFFF << 5))) | (1 << 4) | (1 << 0));
-    rbar2 = ((0x60000000 & ((0x7FFFFFF << 5))) | (1 << 4) | (2 << 0));
-    rbar3 = ((0x10000000 & ((0x7FFFFFF << 5))) | (1 << 4) | (3 << 0));
-    rbar4 = ((0x08000000 & ((0x7FFFFFF << 5))) | (1 << 4) | (4 << 0));
-    rbar5 = ((0x80000000 & ((0x7FFFFFF << 5))) | (1 << 4) | (5 << 0));
-    rbar6 = ((0x81E00000 & ((0x7FFFFFF << 5))) | (1 << 4) | (6 << 0));	
-      
-    rasr0  = (0x3 << 24) | (2 << 19) | (0xC0 << 8) | (28 << 1) | (1 << 0);
-    rasr1  = (0x3 << 24) | (2 << 19) | (0xC0 << 8) | (29 << 1) | (1 << 0);
-    rasr2  = (0x3 << 24) | (2 << 19) | (0xC0 << 8) | (28 << 1) | (1 << 0);
-    rasr3  = (0x3 << 24) | (2 << 19) | (0xC0 << 8) | (27 << 1) | (1 << 0);
-    rasr4  = (0x3 << 24) | (2 << 19) | (0xC0 << 8) | (26 << 1) | (1 << 0);
-    rasr5  = (0x3 << 24) | (3 << 16) | (0xC0 << 8) | (25 << 1) | (1 << 0);
-    rasr6  = (0x3 << 24) | (1 << 19) | (0xC0 << 8) | (20 << 1) | (1 << 0);	
-
-    ctrl  = (0x1 << 0) | (1 << 2);
-
-    /* MPU_CTRL. */
-    MEM_WriteU32(0xE000ED94, 0x0);
-    
-	/* MPU_RBAR. */
-    MEM_WriteU32(0xE000ED9C, rbar6);
-    /* MPU_RASR. */
-    MEM_WriteU32(0xE000EDA0, rasr6);
-	
-    /* MPU_RBAR. */
-    MEM_WriteU32(0xE000ED9C, rbar5);
-    /* MPU_RASR. */
-    MEM_WriteU32(0xE000EDA0, rasr5);
-    
-    /* MPU_RBAR. */
-    MEM_WriteU32(0xE000ED9C, rbar4);
-    /* MPU_RASR. */
-    MEM_WriteU32(0xE000EDA0, rasr4);
-
-    /* MPU_RBAR. */
-    MEM_WriteU32(0xE000ED9C, rbar3);
-    /* MPU_RASR. */
-    MEM_WriteU32(0xE000EDA0, rasr3);
-
-    /* MPU_RBAR. */
-    MEM_WriteU32(0xE000ED9C, rbar2);
-    /* MPU_RASR. */
-    MEM_WriteU32(0xE000EDA0, rasr2);
-    
-    /* MPU_RBAR. */
-    MEM_WriteU32(0xE000ED9C, rbar1);
-    /* MPU_RASR. */
-    MEM_WriteU32(0xE000EDA0, rasr1);
-
-    /* MPU_RBAR. */
-    MEM_WriteU32(0xE000ED9C, rbar0);
-    /* MPU_RASR. */
-    MEM_WriteU32(0xE000EDA0, rasr0);
-    
-    /* MPU_CTRL. */
-    MEM_WriteU32(0xE000ED94, ctrl);
-}
-
-void flexram_init(void)
-{
-    Report("flexram init\n");
-    MEM_WriteU32(0x400AC040, 0x80000000);      //IOMUXC_GPR_GPR16
-    
-    //MEM_WriteU32(0x400AC044, 0xFFFFAA55);      //IOMUXC_GPR_GPR17: 256K ITCM, 128K DTCM, 128K OCRAM
-    MEM_WriteU32(0x400AC044, 0xFFFFFFFF);      //IOMUXC_GPR_GPR17: 512K ITCM
-    
-    MEM_WriteU32(0x400AC038, 0x00890000);      //IOMUXC_GPR_GPR14
-    MEM_WriteU32(0x400AC040, 0x80000007);      //IOMUXC_GPR_GPR16
-}
-
-/* ConfigTarget */
-void ConfigTargetSettings(void)
-{
-  Report("Config JTAG Speed to 4000kHz");
-  JTAG_Speed = 4000;
-}
-
-/* SetupTarget */
-void SetupTarget(void) {
-
-  Report("Enabling i.MXRT SDRAM");
-  Clock_Init();
-  flexram_init();
-  SDRAM_Init();
-  MPU_Init();
-}
-
-/* ResetTarget */
-void ResetTarget(void) {
-  unsigned int v;
-  unsigned int Tmp;
-  //
-  // J-Link DLL expects CPU to be reset and halted when leaving this function
-  //
-  Report("J-Link script: ResetTarget()");
-  //issue a software reset
-  //Tmp = MEM_ReadU32(0xE000ED0C);
-  //Tmp = (Tmp&0x0000ffff)|0x05fa0000|(1<<2);
-  //MEM_WriteU32(0xE000ED0C,Tmp);  
-  //SYS_Sleep(10);
-  // Read IDCODE
-  v=JLINK_CORESIGHT_ReadDP(0);
-  Report1("DP0: ", v);
-
-  // Power up Debugger
-  JLINK_CORESIGHT_WriteDP(1, 0x50000000);
-  v=JLINK_CORESIGHT_ReadDP(1);
-  Report1("DP1: ", v);
-
-
-  JLINK_CORESIGHT_WriteAP(0, 0x23000042);
-  v=JLINK_CORESIGHT_ReadAP(0);
-  Report1("AHB-AP0: ", v);  
-
-  JLINK_CORESIGHT_WriteAP(1, 0xE000EDF0);
-  v=JLINK_CORESIGHT_ReadAP(1);
-  Report1("AHB-AP1: ", v); 
-  v=JLINK_CORESIGHT_ReadAP(3);
-  Report1("AHB-AP3: ", v); 
-  JLINK_CORESIGHT_WriteAP(3, 0xa05f0003);
-  v=JLINK_CORESIGHT_ReadAP(3);
-  Report1("AHB-AP3: ", v);
-
-  Clock_Init();
-  SDRAM_Init();
-  MPU_Init();
-}
diff --git a/bsp/imxrt1052-evk/sdram_mpu_init.ini b/bsp/imxrt1052-evk/sdram_mpu_init.ini
deleted file mode 100644
index 475bd7ada5..0000000000
--- a/bsp/imxrt1052-evk/sdram_mpu_init.ini
+++ /dev/null
@@ -1,236 +0,0 @@
-FUNC void SDRAM_WaitIpCmdDone(void)
-{
-  unsigned long reg;
-  do
-  {
-    reg = _RDWORD(0x402F003C);
-  }while((reg & 0x3) == 0);
-}
-
-FUNC void _clock_init(void)
-{
-  // Enable all clocks
-  _WDWORD(0x400FC068, 0xffffffff);
-  _WDWORD(0x400FC06C, 0xffffffff);
-  _WDWORD(0x400FC070, 0xffffffff);
-  _WDWORD(0x400FC074, 0xffffffff);
-  _WDWORD(0x400FC078, 0xffffffff);
-  _WDWORD(0x400FC07C, 0xffffffff);
-  _WDWORD(0x400FC080, 0xffffffff);
-
-  _WDWORD(0x400D8030, 0x00002001);
-  _WDWORD(0x400D8100, 0x00100000);
-  _WDWORD(0x400FC014, 0x00050D40);
-}
-
-FUNC void _sdr_Init(void)
-{
-  // Config IOMUX
-  _WDWORD(0x401F8014, 0x00000000);
-  _WDWORD(0x401F8018, 0x00000000);
-  _WDWORD(0x401F801C, 0x00000000);
-  _WDWORD(0x401F8020, 0x00000000);
-  _WDWORD(0x401F8024, 0x00000000);
-  _WDWORD(0x401F8028, 0x00000000);
-  _WDWORD(0x401F802C, 0x00000000);
-  _WDWORD(0x401F8030, 0x00000000);
-  _WDWORD(0x401F8034, 0x00000000);
-  _WDWORD(0x401F8038, 0x00000000);
-  _WDWORD(0x401F803C, 0x00000000);
-  _WDWORD(0x401F8040, 0x00000000);
-  _WDWORD(0x401F8044, 0x00000000);
-  _WDWORD(0x401F8048, 0x00000000);
-  _WDWORD(0x401F804C, 0x00000000);
-  _WDWORD(0x401F8050, 0x00000000);
-  _WDWORD(0x401F8054, 0x00000000);
-  _WDWORD(0x401F8058, 0x00000000);
-  _WDWORD(0x401F805C, 0x00000000);
-  _WDWORD(0x401F8060, 0x00000000);
-  _WDWORD(0x401F8064, 0x00000000);
-  _WDWORD(0x401F8068, 0x00000000);
-  _WDWORD(0x401F806C, 0x00000000);
-  _WDWORD(0x401F8070, 0x00000000);
-  _WDWORD(0x401F8074, 0x00000000);
-  _WDWORD(0x401F8078, 0x00000000);
-  _WDWORD(0x401F807C, 0x00000000);
-  _WDWORD(0x401F8080, 0x00000000);
-  _WDWORD(0x401F8084, 0x00000000);
-  _WDWORD(0x401F8088, 0x00000000);
-  _WDWORD(0x401F808C, 0x00000000);
-  _WDWORD(0x401F8090, 0x00000000);
-  _WDWORD(0x401F8094, 0x00000000);
-  _WDWORD(0x401F8098, 0x00000000);
-  _WDWORD(0x401F809C, 0x00000000);
-  _WDWORD(0x401F80A0, 0x00000000);
-  _WDWORD(0x401F80A4, 0x00000000);
-  _WDWORD(0x401F80A8, 0x00000000);
-  _WDWORD(0x401F80AC, 0x00000000);
-  _WDWORD(0x401F80B0, 0x00000000);
-  _WDWORD(0x401F80B4, 0x00000000);
-  _WDWORD(0x401F80B8, 0x00000000);
-
-  // PAD ctrl
-  _WDWORD(0x401F8204, 0x000000F1);
-  _WDWORD(0x401F8208, 0x000000F1);
-  _WDWORD(0x401F820C, 0x000000F1);
-  _WDWORD(0x401F8210, 0x000000F1);
-  _WDWORD(0x401F8214, 0x000000F1);
-  _WDWORD(0x401F8218, 0x000000F1);
-  _WDWORD(0x401F821C, 0x000000F1);
-  _WDWORD(0x401F8220, 0x000000F1);
-  _WDWORD(0x401F8224, 0x000000F1);
-  _WDWORD(0x401F8228, 0x000000F1);
-  _WDWORD(0x401F822C, 0x000000F1);
-  _WDWORD(0x401F8230, 0x000000F1);
-  _WDWORD(0x401F8234, 0x000000F1);
-  _WDWORD(0x401F8238, 0x000000F1);
-  _WDWORD(0x401F823C, 0x000000F1);
-  _WDWORD(0x401F8240, 0x000000F1);
-  _WDWORD(0x401F8244, 0x000000F1);
-  _WDWORD(0x401F8248, 0x000000F1);
-  _WDWORD(0x401F824C, 0x000000F1);
-  _WDWORD(0x401F8250, 0x000000F1);
-  _WDWORD(0x401F8254, 0x000000F1);
-  _WDWORD(0x401F8258, 0x000000F1);
-  _WDWORD(0x401F825C, 0x000000F1);
-  _WDWORD(0x401F8260, 0x000000F1);
-  _WDWORD(0x401F8264, 0x000000F1);
-  _WDWORD(0x401F8268, 0x000000F1);
-  _WDWORD(0x401F826C, 0x000000F1);
-  _WDWORD(0x401F8270, 0x000000F1);
-  _WDWORD(0x401F8274, 0x000000F1);
-  _WDWORD(0x401F8278, 0x000000F1);
-  _WDWORD(0x401F827C, 0x000000F1);
-  _WDWORD(0x401F8280, 0x000000F1);
-  _WDWORD(0x401F8284, 0x000000F1);
-  _WDWORD(0x401F8288, 0x000000F1);
-  _WDWORD(0x401F828C, 0x000000F1);
-  _WDWORD(0x401F8290, 0x000000F1);
-  _WDWORD(0x401F8294, 0x000000F1);
-  _WDWORD(0x401F8298, 0x000000F1);
-  _WDWORD(0x401F829C, 0x000000F1);
-  _WDWORD(0x401F82A0, 0x000000F1);
-  _WDWORD(0x401F82A4, 0x000000F1);
-  _WDWORD(0x401F82A8, 0x000000F1);
-
-  _WDWORD(0x402F0000, 0x1000E000);
-  _WDWORD(0x402F0008, 0x00030524);
-  _WDWORD(0x402F000C, 0x06030524);
-  _WDWORD(0x402F0010, 0x8000001B);
-  _WDWORD(0x402F0014, 0x90000021);
-  _WDWORD(0x402F0004, 0x00000008);
-  _WDWORD(0x402F0040, 0x00000B27);
-  _WDWORD(0x402F0044, 0x00100100);
-  _WDWORD(0x402F0048, 0x00020201);
-  _WDWORD(0x402F004C, 0x08193D0E);
-  _WDWORD(0x402F0080, 0x00000021);
-  _WDWORD(0x402F0084, 0x00888888);
-  _WDWORD(0x402F0094, 0x00000002);
-  _WDWORD(0x402F0098, 0x00000000);
-
-  _WDWORD(0x402F0090, 0x80000000);
-  _WDWORD(0x402F009C, 0xA55A000F);
-  SDRAM_WaitIpCmdDone();
-  _WDWORD(0x402F0090, 0x80000000);
-  _WDWORD(0x402F009C, 0xA55A000C);
-  SDRAM_WaitIpCmdDone();
-  _WDWORD(0x402F0090, 0x80000000);
-  _WDWORD(0x402F009C, 0xA55A000C);
-  SDRAM_WaitIpCmdDone();
-  _WDWORD(0x402F00A0, 0x00000022);
-  _WDWORD(0x402F0090, 0x80000000);
-  _WDWORD(0x402F009C, 0xA55A000A);
-  SDRAM_WaitIpCmdDone();
-}
-
-FUNC void _mpu_Init()
-{
-  unsigned long rbar0, rbar1, rbar2, rbar3, rbar4, rbar5, rbar6;
-  unsigned long rasr0, rasr1, rasr2, rasr3, rasr4, rasr5, rasr6;
-  unsigned long ctrl;
-
-  rbar0 = ((0xC0000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (0U << 0U));
-  rbar1 = ((0x80000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (1U << 0U));
-  rbar2 = ((0x60000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (2U << 0U));
-  rbar3 = ((0x10000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (3U << 0U));
-  rbar4 = ((0x08000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (4U << 0U));
-  rbar5 = ((0x80000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (5U << 0U));
-  rbar6 = ((0x81E00000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (6U << 0U));
-  
-  rasr0  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (28U << 1U) | (1U << 0U);
-  rasr1  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (29U << 1U) | (1U << 0U);
-  rasr2  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (28U << 1U) | (1U << 0U);
-  rasr3  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (27U << 1U) | (1U << 0U);
-  rasr4  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (26U << 1U) | (1U << 0U);
-  rasr5  = (0x3U << 24U) | (3UL << 16U) | (0xC0U << 8U) | (25U << 1U) | (1U << 0U);
-  rasr6  = (0x3U << 24U) | (1UL << 19U) | (0xC0U << 8U) | (20U << 1U) | (1U << 0U);
-	
-  /* Enable Privileged default memory map and the MPU. */
-  ctrl  = (0x1U << 0) | (1U << 2U);
-  
-  /* MPU_CTRL. */
-  _WDWORD(0xE000ED94, 0x0);
-  
-	/* MPU_RBAR. */
-  _WDWORD(0xE000ED9C, rbar6);  
-  /* MPU_RASR. */
-  _WDWORD(0xE000EDA0, rasr6);
-	
-  /* MPU_RBAR. */
-  _WDWORD(0xE000ED9C, rbar5);  
-  /* MPU_RASR. */
-  _WDWORD(0xE000EDA0, rasr5);
-
-  _WDWORD(0xE000ED9C, rbar4);  
-  /* MPU_RASR. */
-  _WDWORD(0xE000EDA0, rasr4);
-
-  _WDWORD(0xE000ED9C, rbar3);  
-  /* MPU_RASR. */
-  _WDWORD(0xE000EDA0, rasr3); 
-  
-  /* MPU_RBAR. */
-  _WDWORD(0xE000ED9C, rbar2);  
-  /* MPU_RASR. */
-  _WDWORD(0xE000EDA0, rasr2);
-
-  _WDWORD(0xE000ED9C, rbar1);  
-  /* MPU_RASR. */
-  _WDWORD(0xE000EDA0, rasr1);
-
-  _WDWORD(0xE000ED9C, rbar0);  
-  /* MPU_RASR. */
-  _WDWORD(0xE000EDA0, rasr0);  
-  
-  /* MPU_CTRL. */
-  _WDWORD(0xE000ED94, ctrl);
-}
-
-FUNC void _flexram_init(void)
-{
-    _WDWORD(0x400AC040, 0x80000000);      //IOMUXC_GPR_GPR16
-    //_WDWORD(0x400AC044, 0xFFFFAA55);      //IOMUXC_GPR_GPR17
-    _WDWORD(0x400AC044, 0xFFFFFFFF);      //IOMUXC_GPR_GPR17
-    _WDWORD(0x400AC038, 0x00890000);      //IOMUXC_GPR_GPR14
-    _WDWORD(0x400AC040, 0x80000007);      //IOMUXC_GPR_GPR16
-}
-
-FUNC void Setup (void) {
-  _clock_init();
-  //_flexram_init();
-  _sdr_Init();
-  _mpu_Init();
-  SP = _RDWORD(0x00000000);          // Setup Stack Pointer
-  PC = _RDWORD(0x00000004);          // Setup Program Counter
-  _WDWORD(0xE000ED08, 0x00000000);   // Setup Vector Table Offset Register
-}
-
-FUNC void OnResetExec (void)  {      // executes upon software RESET
-  Setup();                           // Setup for Running
-}
-
-LOAD %L INCREMENTAL                  // Download
-
-Setup();                             // Setup for Running
-
-// g, main
diff --git a/bsp/imxrt1052-evk/sdram_mpu_init.mac b/bsp/imxrt1052-evk/sdram_mpu_init.mac
deleted file mode 100644
index 0e11122fc0..0000000000
--- a/bsp/imxrt1052-evk/sdram_mpu_init.mac
+++ /dev/null
@@ -1,249 +0,0 @@
-/*****************************************************************************/
-
-
-SDRAM_WaitIpCmdDone()
-{
-  __var reg;
-  do
-  {
-    reg = __readMemory32(0x402F003C, "Memory");
-  }while((reg & 0x3) == 0);
-}
-
-_clock_init()
-{
-  // Enable all clocks
-  __writeMemory32(0xffffffff, 0x400FC068, "Memory");
-  __writeMemory32(0xffffffff, 0x400FC06C, "Memory");
-  __writeMemory32(0xffffffff, 0x400FC070, "Memory");
-  __writeMemory32(0xffffffff, 0x400FC074, "Memory");
-  __writeMemory32(0xffffffff, 0x400FC078, "Memory");
-  __writeMemory32(0xffffffff, 0x400FC07C, "Memory");
-  __writeMemory32(0xffffffff, 0x400FC080, "Memory");
-
-  __writeMemory32(0x00002001, 0x400D8030, "Memory");
-  __writeMemory32(0x00100000, 0x400D8100, "Memory");
-  __writeMemory32(0x00050D40, 0x400FC014, "Memory");
-}
-
-_sdr_Init()
-{
-  // Config IOMUX
-  __writeMemory32(0x00000000, 0x401F8014, "Memory");
-  __writeMemory32(0x00000000, 0x401F8018, "Memory");
-  __writeMemory32(0x00000000, 0x401F801C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8020, "Memory");
-  __writeMemory32(0x00000000, 0x401F8024, "Memory");
-  __writeMemory32(0x00000000, 0x401F8028, "Memory");
-  __writeMemory32(0x00000000, 0x401F802C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8030, "Memory");
-  __writeMemory32(0x00000000, 0x401F8034, "Memory");
-  __writeMemory32(0x00000000, 0x401F8038, "Memory");
-  __writeMemory32(0x00000000, 0x401F803C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8040, "Memory");
-  __writeMemory32(0x00000000, 0x401F8044, "Memory");
-  __writeMemory32(0x00000000, 0x401F8048, "Memory");
-  __writeMemory32(0x00000000, 0x401F804C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8050, "Memory");
-  __writeMemory32(0x00000000, 0x401F8054, "Memory");
-  __writeMemory32(0x00000000, 0x401F8058, "Memory");
-  __writeMemory32(0x00000000, 0x401F805C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8060, "Memory");
-  __writeMemory32(0x00000000, 0x401F8064, "Memory");
-  __writeMemory32(0x00000000, 0x401F8068, "Memory");
-  __writeMemory32(0x00000000, 0x401F806C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8070, "Memory");
-  __writeMemory32(0x00000000, 0x401F8074, "Memory");
-  __writeMemory32(0x00000000, 0x401F8078, "Memory");
-  __writeMemory32(0x00000000, 0x401F807C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8080, "Memory");
-  __writeMemory32(0x00000000, 0x401F8084, "Memory");
-  __writeMemory32(0x00000000, 0x401F8088, "Memory");
-  __writeMemory32(0x00000000, 0x401F808C, "Memory");
-  __writeMemory32(0x00000000, 0x401F8090, "Memory");
-  __writeMemory32(0x00000000, 0x401F8094, "Memory");
-  __writeMemory32(0x00000000, 0x401F8098, "Memory");
-  __writeMemory32(0x00000000, 0x401F809C, "Memory");
-  __writeMemory32(0x00000000, 0x401F80A0, "Memory");
-  __writeMemory32(0x00000000, 0x401F80A4, "Memory");
-  __writeMemory32(0x00000000, 0x401F80A8, "Memory");
-  __writeMemory32(0x00000000, 0x401F80AC, "Memory");
-  __writeMemory32(0x00000000, 0x401F80B0, "Memory");
-  __writeMemory32(0x00000000, 0x401F80B4, "Memory");
-  __writeMemory32(0x00000000, 0x401F80B8, "Memory");
-
-  // PAD ctrl
-  __writeMemory32(0x000000F1, 0x401F8204, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8208, "Memory");
-  __writeMemory32(0x000000F1, 0x401F820C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8210, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8214, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8218, "Memory");
-  __writeMemory32(0x000000F1, 0x401F821C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8220, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8224, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8228, "Memory");
-  __writeMemory32(0x000000F1, 0x401F822C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8230, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8234, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8238, "Memory");
-  __writeMemory32(0x000000F1, 0x401F823C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8240, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8244, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8248, "Memory");
-  __writeMemory32(0x000000F1, 0x401F824C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8250, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8254, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8258, "Memory");
-  __writeMemory32(0x000000F1, 0x401F825C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8260, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8264, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8268, "Memory");
-  __writeMemory32(0x000000F1, 0x401F826C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8270, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8274, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8278, "Memory");
-  __writeMemory32(0x000000F1, 0x401F827C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8280, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8284, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8288, "Memory");
-  __writeMemory32(0x000000F1, 0x401F828C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8290, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8294, "Memory");
-  __writeMemory32(0x000000F1, 0x401F8298, "Memory");
-  __writeMemory32(0x000000F1, 0x401F829C, "Memory");
-  __writeMemory32(0x000000F1, 0x401F82A0, "Memory");
-  __writeMemory32(0x000000F1, 0x401F82A4, "Memory");
-  __writeMemory32(0x000000F1, 0x401F82A8, "Memory");
-
-  __writeMemory32(0x1000E000, 0x402F0000, "Memory");
-  __writeMemory32(0x00030524, 0x402F0008, "Memory");
-  __writeMemory32(0x06030524, 0x402F000C, "Memory");
-  __writeMemory32(0x8000001B, 0x402F0010, "Memory");
-  __writeMemory32(0x90000021, 0x402F0014, "Memory");
-  __writeMemory32(0x00000008, 0x402F0004, "Memory");
-  __writeMemory32(0x00000B27, 0x402F0040, "Memory");
-  __writeMemory32(0x00100100, 0x402F0044, "Memory");
-  __writeMemory32(0x00020201, 0x402F0048, "Memory");
-  __writeMemory32(0x08193D0E, 0x402F004C, "Memory");
-  __writeMemory32(0x00000021, 0x402F0080, "Memory");
-  __writeMemory32(0x00888888, 0x402F0084, "Memory");
-  __writeMemory32(0x00000002, 0x402F0094, "Memory");
-  __writeMemory32(0x00000000, 0x402F0098, "Memory");
-
-  __writeMemory32(0x80000000, 0x402F0090, "Memory");
-  __writeMemory32(0xA55A000F, 0x402F009C, "Memory");
-  SDRAM_WaitIpCmdDone();
-  __writeMemory32(0x80000000, 0x402F0090, "Memory");
-  __writeMemory32(0xA55A000C, 0x402F009C, "Memory");
-  SDRAM_WaitIpCmdDone();
-  __writeMemory32(0x80000000, 0x402F0090, "Memory");
-  __writeMemory32(0xA55A000C, 0x402F009C, "Memory");
-  SDRAM_WaitIpCmdDone();
-  __writeMemory32(0x00000022, 0x402F00A0, "Memory");
-  __writeMemory32(0x80000000, 0x402F0090, "Memory");
-  __writeMemory32(0xA55A000A, 0x402F009C, "Memory");
-  SDRAM_WaitIpCmdDone();
-  __message "SDRAM init done\n";
-}
-
-_mpu_Init()
-{
-  __var rbar0, rbar1, rbar2, rbar3, rbar4, rbar5, rbar6;
-  rbar0 = ((0xC0000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (0U << 0U));
-  rbar1 = ((0x80000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (1U << 0U));
-  rbar2 = ((0x60000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (2U << 0U));
-  rbar3 = ((0x10000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (3U << 0U));
-  rbar4 = ((0x08000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (4U << 0U));
-  rbar5 = ((0x80000000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (5U << 0U));
-  rbar6 = ((0x81E00000U & ((0x7FFFFFFUL << 5U))) | (1UL << 4U) | (6U << 0U));
-  
-  __var rasr0, rasr1, rasr2, rasr3, rasr4, rasr5, rasr6;
-  rasr0  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (28U << 1U) | (1U << 0U);
-  rasr1  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (29U << 1U) | (1U << 0U);
-  rasr2  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (28U << 1U) | (1U << 0U);
-  rasr3  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (27U << 1U) | (1U << 0U);
-  rasr4  = (0x3U << 24U) | (2UL << 19U) | (0xC0U << 8U) | (26U << 1U) | (1U << 0U);
-  rasr5  = (0x3U << 24U) | (3UL << 16U) | (0xC0U << 8U) | (25U << 1U) | (1U << 0U); 
-  rasr6  = (0x3U << 24U) | (1UL << 19U) | (0xC0U << 8U) | (20U << 1U) | (1U << 0U);
-  
-  /* Enable Privileged default memory map and the MPU. */
-  __var ctrl;
-  ctrl  = (0x1U << 0) | (1U << 2U);
-  
-  /* MPU_CTRL. */
-  __writeMemory32(0x0,  0xE000ED94, "Memory");
-  
-    /* MPU_RBAR. */
-  __writeMemory32(rbar6, 0xE000ED9C, "Memory");
-  /* MPU_RASR. */
-  __writeMemory32(rasr6, 0xE000EDA0, "Memory");
-  
-  /* MPU_RBAR. */
-  __writeMemory32(rbar5, 0xE000ED9C, "Memory");
-  /* MPU_RASR. */
-  __writeMemory32(rasr5, 0xE000EDA0, "Memory");
-  
-  /* MPU_RBAR. */
-  __writeMemory32(rbar4, 0xE000ED9C, "Memory");
-  /* MPU_RASR. */
-  __writeMemory32(rasr4, 0xE000EDA0, "Memory");
-  
-  /* MPU_RBAR. */
-  __writeMemory32(rbar3, 0xE000ED9C, "Memory");
-  /* MPU_RASR. */
-  __writeMemory32(rasr3, 0xE000EDA0, "Memory");
-  
-  /* MPU_RBAR. */
-  __writeMemory32(rbar2, 0xE000ED9C, "Memory");
-  /* MPU_RASR. */
-  __writeMemory32(rasr2, 0xE000EDA0, "Memory");
-  
-  /* MPU_RBAR. */
-  __writeMemory32(rbar1, 0xE000ED9C, "Memory");
-  /* MPU_RASR. */
-  __writeMemory32(rasr1, 0xE000EDA0, "Memory");
-
-  /* MPU_RBAR. */
-  __writeMemory32(rbar0, 0xE000ED9C, "Memory");
-  /* MPU_RASR. */
-  __writeMemory32(rasr0, 0xE000EDA0, "Memory");
-  
-  /* MPU_CTRL. */
-  __writeMemory32(ctrl, 0xE000ED94, "Memory");
-}
-
-_flexram_init()
-{
-    __message "flexram init\n";
-    __writeMemory32(0x80000000, 0x400AC040, "Memory");      //IOMUXC_GPR_GPR16
-    //__writeMemory32(0xFFFFAA55, 0x400AC044, "Memory");      //IOMUXC_GPR_GPR17
-    __writeMemory32(0xFFFFFFFF, 0x400AC044, "Memory");      //IOMUXC_GPR_GPR17
-    __writeMemory32(0x00890000, 0x400AC038, "Memory");      //IOMUXC_GPR_GPR14
-    __writeMemory32(0x80000007, 0x400AC040, "Memory");      //IOMUXC_GPR_GPR16
-}
-
-execUserPreload()
-{
-  __message "execUserPreload() start.\n";
-  
-  _clock_init();
-  _flexram_init();
-  _sdr_Init();
-  _mpu_Init();
-  
-  __message "execUserPreload() done.\n";
-}
-
-execUserReset()
-{
-  __message "execUserReset() start.\n";
-
-  _clock_init();
-  _flexram_init();
-  _sdr_Init();
-  _mpu_Init();
-  
-  __message "execUserReset() done.\n";
-}
-
diff --git a/components/drivers/spi/SConscript b/components/drivers/spi/SConscript
index 5608bdcab6..01cc608c2b 100644
--- a/components/drivers/spi/SConscript
+++ b/components/drivers/spi/SConscript
@@ -1,8 +1,10 @@
 from building import *
+import rtconfig
 
 cwd = GetCurrentDir()
 src = ['spi_core.c', 'spi_dev.c']
 CPPPATH = [cwd, cwd + '/../include']
+LOCAL_CCFLAGS = ''
 
 src_device = []
 
@@ -32,9 +34,13 @@ if GetDepend('RT_USING_SFUD'):
     CPPPATH += [cwd + '/sfud/inc']
     if GetDepend('RT_SFUD_USING_SFDP'):
         src_device += ['sfud/src/sfud_sfdp.c']
+    if rtconfig.CROSS_TOOL == 'gcc':
+        LOCAL_CCFLAGS += ' -std=c99'
+    elif rtconfig.CROSS_TOOL == 'keil':
+        LOCAL_CCFLAGS += ' --c99'
 
 src += src_device
 
-group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_SPI'], CPPPATH = CPPPATH)
+group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_SPI'], CPPPATH = CPPPATH, LOCAL_CCFLAGS = LOCAL_CCFLAGS)
 
 Return('group')
diff --git a/components/drivers/spi/spi_flash_sfud.c b/components/drivers/spi/spi_flash_sfud.c
index aef6babe0e..c94effa613 100644
--- a/components/drivers/spi/spi_flash_sfud.c
+++ b/components/drivers/spi/spi_flash_sfud.c
@@ -165,11 +165,6 @@ static void spi_unlock(const sfud_spi *spi) {
     rt_mutex_release(&(rtt_dev->lock));
 }
 
-static void retry_delay_ms(void) {
-    /* millisecond delay */
-    rt_tick_from_millisecond(1);
-}
-
 static void retry_delay_100us(void) {
     /* 100 microsecond delay */
     rt_thread_delay((RT_TICK_PER_SECOND * 1 + 9999) / 10000);
@@ -242,6 +237,9 @@ rt_spi_flash_device_t rt_sfud_flash_probe(const char *spi_flash_dev_name, const
     rt_spi_flash_device_t rtt_dev = RT_NULL;
     sfud_flash *sfud_dev = RT_NULL;
     char *spi_flash_dev_name_bak = RT_NULL, *spi_dev_name_bak = RT_NULL;
+    /* using default flash SPI configuration for initialize SPI Flash
+     * @note you also can change the SPI to other configuration after initialized finish */
+    struct rt_spi_configuration cfg = RT_SFUD_DEFAULT_SPI_CFG;
     extern sfud_err sfud_device_init(sfud_flash *flash);
 
     RT_ASSERT(spi_flash_dev_name);
@@ -269,9 +267,6 @@ rt_spi_flash_device_t rt_sfud_flash_probe(const char *spi_flash_dev_name, const
                 goto error;
             }
             sfud_dev->spi.name = spi_dev_name_bak;
-            /* using default flash SPI configuration for initialize SPI Flash
-             * @note you also can change the SPI to other configuration after initialized finish */
-            struct rt_spi_configuration cfg = RT_SFUD_DEFAULT_SPI_CFG;
             rt_spi_configure(rtt_dev->rt_spi_device, &cfg);
             /* initialize lock */
             rt_mutex_init(&(rtt_dev->lock), spi_flash_dev_name, RT_IPC_FLAG_FIFO);
diff --git a/components/net/Kconfig b/components/net/Kconfig
index e81b966093..af375e6c03 100644
--- a/components/net/Kconfig
+++ b/components/net/Kconfig
@@ -97,6 +97,10 @@ config RT_USING_LWIP
                 default n
         endif
         
+        config RT_MEMP_NUM_NETCONN
+            int "the number of struct netconns"
+            default 8
+
         config RT_LWIP_PBUF_NUM
             int "the number of PBUF"
             default 16
diff --git a/components/net/lwip-1.4.1/src/lwipopts.h b/components/net/lwip-1.4.1/src/lwipopts.h
index 0b177b5894..8b4d38961e 100644
--- a/components/net/lwip-1.4.1/src/lwipopts.h
+++ b/components/net/lwip-1.4.1/src/lwipopts.h
@@ -93,6 +93,11 @@
    should be set high. */
 #define MEMP_NUM_PBUF               16
 
+/* the number of struct netconns */
+#ifdef RT_MEMP_NUM_NETCONN
+#define MEMP_NUM_NETCONN            RT_MEMP_NUM_NETCONN
+#endif
+
 /* the number of UDP protocol control blocks. One per active RAW "connection". */
 #ifdef RT_LWIP_RAW_PCB_NUM
 #define MEMP_NUM_RAW_PCB            RT_LWIP_RAW_PCB_NUM
diff --git a/components/net/lwip-2.0.2/src/lwipopts.h b/components/net/lwip-2.0.2/src/lwipopts.h
index 76e3a0f948..988b9668db 100644
--- a/components/net/lwip-2.0.2/src/lwipopts.h
+++ b/components/net/lwip-2.0.2/src/lwipopts.h
@@ -105,6 +105,11 @@
    should be set high. */
 #define MEMP_NUM_PBUF               32 //16
 
+/* the number of struct netconns */
+#ifdef RT_MEMP_NUM_NETCONN
+#define MEMP_NUM_NETCONN            RT_MEMP_NUM_NETCONN
+#endif
+
 /* the number of UDP protocol control blocks. One per active RAW "connection". */
 #ifdef RT_LWIP_RAW_PCB_NUM
 #define MEMP_NUM_RAW_PCB            RT_LWIP_RAW_PCB_NUM