MXRT1050_EVK: Ensure certain low power function are linked to internal memory

Low power functions related to powering off FLEXSPI and SDRAM needs
to be copied to internal memory

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/TARGET_EVK/mbed_overrides.c

@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 #include "pinmap.h"
-
 #include "fsl_clock_config.h"
 #include "fsl_clock.h"
+#include "lpm.h"
 
 #define LPSPI_CLOCK_SOURCE_DIVIDER (7U)
 #define LPI2C_CLOCK_SOURCE_DIVIDER (5U)
@@ -124,11 +124,39 @@ void BOARD_ConfigMPU(void)
     SCB_EnableICache();
 }
 
+#if defined(TOOLCHAIN_GCC_ARM)
+extern uint32_t __ram_function_flash_start[];
+#define __RAM_FUNCTION_FLASH_START __ram_function_flash_start
+extern uint32_t __ram_function_ram_start[];
+#define __RAM_FUNCTION_RAM_START __ram_function_ram_start
+extern uint32_t __ram_function_size[];
+#define __RAM_FUNCTION_SIZE __ram_function_size
+void Board_CopyToRam()
+{
+    unsigned char *source;
+    unsigned char *destiny;
+    unsigned int size;
+
+    source = (unsigned char *)(__RAM_FUNCTION_FLASH_START);
+    destiny = (unsigned char *)(__RAM_FUNCTION_RAM_START);
+    size = (unsigned long)(__RAM_FUNCTION_SIZE);
+
+    while (size--)
+    {
+        *destiny++ = *source++;
+    }
+}
+#endif
+
 // called before main
 void mbed_sdk_init()
 {
     BOARD_ConfigMPU();
     BOARD_BootClockRUN();
+#if defined(TOOLCHAIN_GCC_ARM)
+    Board_CopyToRam();
+#endif
+    LPM_Init();
 }
 
 void spi_setup_clock()

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/device/TOOLCHAIN_ARM_STD/MIMXRT1052xxxxx.sct

@@ -77,6 +77,9 @@
 #define m_text_start                   0x60002400
 #define m_text_size                    0x03FFDC00
 
+#define m_text2_start                  0x00000000
+#define m_text2_size                   0x00020000
+
 #define m_data_start                   0x80000000
 #define m_data_size                    0x01E00000
 
@@ -139,6 +142,9 @@ LR_IROM1 m_flash_config_start m_text_start+m_text_size-m_flash_config_start {
   }
   ARM_LIB_STACK m_data_start+m_data_size EMPTY -Stack_Size { ; Stack region growing down
   }
+  RW_m_ram_text m_text2_start UNINIT m_text2_size { ; load address = execution address
+    * (RamFunction)
+  }
   RW_m_ncache m_ncache_start m_ncache_size { ; ncache RW data
     * (NonCacheable.init)
     * (NonCacheable)

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/device/TOOLCHAIN_GCC_ARM/MIMXRT1052xxxxx.ld

@@ -72,6 +72,7 @@ MEMORY
   m_ivt                 (RX)  : ORIGIN = 0x60001000, LENGTH = 0x00001000
   m_interrupts          (RX)  : ORIGIN = 0x60002000, LENGTH = 0x00000400
   m_text                (RX)  : ORIGIN = 0x60002400, LENGTH = 0x03FFDC00
+  m_text2               (RX)  : ORIGIN = 0x00000000, LENGTH = 0x00020000
   m_data                (RW)  : ORIGIN = 0x80000000, LENGTH = 0x01E00000
   m_ncache              (RW)  : ORIGIN = 0x81E00000, LENGTH = 0x00200000
   m_data2               (RW)  : ORIGIN = 0x20000000, LENGTH = 0x00020000
@@ -225,7 +226,21 @@ SECTIONS
     __data_end__ = .;        /* define a global symbol at data end */
   } > m_data
 
-  __NDATA_ROM = __DATA_ROM + (__data_end__ - __data_start__);
+  __ram_function_flash_start = __DATA_ROM + (__data_end__ - __data_start__); /* Symbol is used by startup for TCM data initialization */
+
+  .ram_function : AT(__ram_function_flash_start)
+  {
+    . = ALIGN(32);
+    __ram_function_ram_start = .;
+    *(RamFunction)
+    . = ALIGN(128);
+    __ram_function_ram_end = .;
+  } > m_text2
+
+  __ram_function_size = SIZEOF(.ram_function);
+
+  __NDATA_ROM = __ram_function_flash_start + SIZEOF(.ram_function);
+
   .ncache.init : AT(__NDATA_ROM)
   {
     __noncachedata_start__ = .;   /* create a global symbol at ncache data start */

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/device/TOOLCHAIN_IAR/MIMXRT1052xxxxx.icf

@@ -67,6 +67,9 @@ define symbol m_interrupts_end         = 0x600023FF;
 define symbol m_text_start             = 0x60002400;
 define symbol m_text_end               = 0x63FFFFFF;
 
+define symbol m_text2_start            = 0x00000000;
+define symbol m_text2_end              = 0x0001FFFF;
+
 define symbol m_interrupts_ram_start   = 0x20000000;
 define symbol m_interrupts_ram_end     = 0x20000000 + __ram_vector_table_offset__;
 
@@ -108,6 +111,8 @@ 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 TEXT2_region = mem:[from m_text2_start to m_text2_end];
+
 define region DATA_region = mem:[from m_data_start to m_data_end];
 define region DATA2_region = mem:[from m_data2_start to m_data2_end];
 define region DATA3_region  = mem:[from m_data3_start to m_data3_end-__size_cstack__];
@@ -139,4 +144,5 @@ place in DATA3_region                        { block ZI };
 place in DATA3_region                        { last block HEAP };
 place in CSTACK_region                      { block CSTACK };
 place in NCACHE_region                      { block NCACHE_VAR };
+place in TEXT2_region                       { section .textrw};
 place in m_interrupts_ram_region            { section m_interrupts_ram };

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/drivers/fsl_common.h

@@ -3,7 +3,7 @@
  * Copyright (c) 2015-2016, Freescale Semiconductor, Inc.
  * Copyright 2016-2017 NXP
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted (subject to the limitations in the disclaimer below) provided
  *  that the following conditions are met:
@@ -149,7 +149,7 @@ enum _status_groups
     kStatusGroup_LPC_MINISPI = 76,            /*!< Group number for LPC_MINISPI status codes. */
     kStatusGroup_NOTIFIER = 98,               /*!< Group number for NOTIFIER status codes. */
     kStatusGroup_DebugConsole = 99,           /*!< Group number for debug console status codes. */
-    kStatusGroup_SEMC = 100,                   /*!< Group number for SEMC status codes. */    
+    kStatusGroup_SEMC = 100,                   /*!< Group number for SEMC status codes. */
     kStatusGroup_ApplicationRangeStart = 101, /*!< Starting number for application groups. */
 };
 
@@ -347,35 +347,6 @@ _Pragma("diag_suppress=Pm120")
 /* @} */
 
 /*! @name Time sensitive region */
-/* @{ */
-#if defined(FSL_SDK_DRIVER_QUICK_ACCESS_ENABLE) && FSL_SDK_DRIVER_QUICK_ACCESS_ENABLE
-#if (defined(__ICCARM__))
-#define AT_QUICKACCESS_SECTION_CODE(func) func @"CodeQuickAccess"
-#define AT_QUICKACCESS_SECTION_DATA(func) func @"DataQuickAccess"
-#elif(defined(__ARMCC_VERSION))
-#define AT_QUICKACCESS_SECTION_CODE(func) __attribute__((section("CodeQuickAccess"))) func
-#define AT_QUICKACCESS_SECTION_DATA(func) __attribute__((section("DataQuickAccess"))) func
-#elif(defined(__GNUC__))
-#define AT_QUICKACCESS_SECTION_CODE(func) __attribute__((section("CodeQuickAccess"))) func
-#define AT_QUICKACCESS_SECTION_DATA(func) __attribute__((section("DataQuickAccess"))) func
-#else
-#error Toolchain not supported.
-#endif /* defined(__ICCARM__) */
-#else
-#if (defined(__ICCARM__))
-#define AT_QUICKACCESS_SECTION_CODE(func) func
-#define AT_QUICKACCESS_SECTION_DATA(func) func
-#elif(defined(__ARMCC_VERSION))
-#define AT_QUICKACCESS_SECTION_CODE(func) func
-#define AT_QUICKACCESS_SECTION_DATA(func) func
-#elif(defined(__GNUC__))
-#define AT_QUICKACCESS_SECTION_CODE(func) func
-#define AT_QUICKACCESS_SECTION_DATA(func) func
-#else
-#error Toolchain not supported.
-#endif    
-#endif /* __FSL_SDK_DRIVER_QUICK_ACCESS_ENABLE */
-/* @} */
 
 /*******************************************************************************
  * API
@@ -557,15 +528,15 @@ _Pragma("diag_suppress=Pm120")
      * @param size The length required to malloc.
      * @param alignbytes The alignment size.
      * @retval The allocated memory.
-     */    
+     */
     void *SDK_Malloc(size_t size, size_t alignbytes);
-    
+
     /*!
      * @brief Free memory.
      *
      * @param ptr The memory to be release.
-     */ 
-    void SDK_Free(void *ptr);    
+     */
+    void SDK_Free(void *ptr);
 
 #if defined(__cplusplus)
 }