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Diff: core/driver/flash/k64f/K64F_IAP.c

Revision:

92:4f77028cce64

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/driver/flash/k64f/K64F_IAP.c	Wed Oct 01 13:58:53 2014 +0000
@@ -0,0 +1,225 @@
+/**
+ * Copyright 2014 MiMicProject
+ * Licensed 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.
+ */
+/**
+ * This file based on https://mbed.org/users/Sissors/code/FreescaleIAP/
+ */
+#include "NyLPC_config.h"
+#if NyLPC_MCU==NyLPC_MCU_K64F
+#include "K64F_IAP.h"
+//For K64F
+#   include "MK64F12.h"
+#   define USE_ProgramPhrase 1
+#   define FTFA                        FTFE
+#   define FTFA_FSTAT_FPVIOL_MASK      FTFE_FSTAT_FPVIOL_MASK 
+#   define FTFA_FSTAT_ACCERR_MASK      FTFE_FSTAT_ACCERR_MASK
+#   define FTFA_FSTAT_RDCOLERR_MASK    FTFE_FSTAT_RDCOLERR_MASK
+#   define FTFA_FSTAT_CCIF_MASK        FTFE_FSTAT_CCIF_MASK
+#   define FTFA_FSTAT_MGSTAT0_MASK     FTFE_FSTAT_MGSTAT0_MASK
+
+enum FCMD {
+    Read1s = 0x01,
+    ProgramCheck = 0x02,
+    ReadResource = 0x03,
+    ProgramLongword = 0x06,
+    ProgramPhrase = 0x07,    
+    EraseSector = 0x09,
+    Read1sBlock = 0x40,
+    ReadOnce = 0x41,
+    ProgramOnce = 0x43,
+    EraseAll = 0x44,
+    VerifyBackdoor = 0x45
+    };
+
+
+#define INT_FALSE (0!=0)
+#define INT_TRUE (0==0)
+
+static inline void run_command(void);
+//static int check_boundary(int address, unsigned int length);
+static int check_align(int address);
+
+static K64F_IAP_TIAPCode verify_erased(int address, unsigned int length);
+static K64F_IAP_TIAPCode check_error(void);
+static K64F_IAP_TIAPCode program_word(int address, char *data);
+    
+K64F_IAP_TIAPCode K64F_IAP_erase_sector(int address) {
+    #ifdef IAPDEBUG
+    printf("IAP: Erasing at %x\r\n", address);
+    #endif
+    if (check_align(address))
+        return K64F_IAP_TIAPCode_AlignError;
+    
+    //Setup command
+    FTFA->FCCOB0 = EraseSector;
+    FTFA->FCCOB1 = (address >> 16) & 0xFF;
+    FTFA->FCCOB2 = (address >> 8) & 0xFF;
+    FTFA->FCCOB3 = address & 0xFF;
+    
+    run_command();
+    
+    return check_error();
+}
+
+K64F_IAP_TIAPCode K64F_IAP_program_flash(int address, char *data, unsigned int length) {
+    #ifdef IAPDEBUG
+    printf("IAP: Programming flash at %x with length %d\r\n", address, length);
+    #endif
+    if (check_align(address))
+        return K64F_IAP_TIAPCode_AlignError;
+        
+    K64F_IAP_TIAPCode eraseCheck = verify_erased(address, length);
+    if (eraseCheck != K64F_IAP_TIAPCode_Success)
+        return eraseCheck;
+    
+    K64F_IAP_TIAPCode progResult;
+    for (int i = 0; i < length; i+=8) {
+        progResult = program_word(address + i, data + i);
+        if (progResult != K64F_IAP_TIAPCode_Success)
+            return progResult;
+    }
+    return K64F_IAP_TIAPCode_Success;
+}
+
+unsigned int K64F_IAP_flash_size(void) {
+    unsigned int retval = (SIM->FCFG2 & 0x7F000000u) >> (24-13);
+    if (SIM->FCFG2 & (1<<23))           //Possible second flash bank
+        retval += (SIM->FCFG2 & 0x007F0000u) >> (16-13);
+    return retval;
+}
+
+static K64F_IAP_TIAPCode program_word(int address, char *data) {
+    #ifdef IAPDEBUG
+    printf("IAP: Programming word at %x, %d - %d - %d - %d - %d - %d - %d - %d\r\n", address, data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]);
+    #endif
+    if (check_align(address)){
+        return K64F_IAP_TIAPCode_AlignError;
+    }
+    FTFA->FCCOB0 = ProgramPhrase;
+    FTFA->FCCOB1 = (address >> 16) & 0xFF;
+    FTFA->FCCOB2 = (address >> 8) & 0xFF;
+    FTFA->FCCOB3 = address & 0xFF;
+    FTFA->FCCOB4 = data[3];
+    FTFA->FCCOB5 = data[2];
+    FTFA->FCCOB6 = data[1];
+    FTFA->FCCOB7 = data[0];
+    FTFA->FCCOB8 = data[7];
+    FTFA->FCCOB9 = data[6];
+    FTFA->FCCOBA = data[5];
+    FTFA->FCCOBB = data[4];    
+    run_command();    
+    return check_error();
+}
+
+/* Clear possible flags which are set, run command, wait until done */
+static inline void run_command(void) {
+    //Clear possible old errors, start command, wait until done
+    __disable_irq();            //Disable IRQs, preventing IRQ routines from trying to access flash (thanks to https://mbed.org/users/mjr/)
+    FTFA->FSTAT = FTFA_FSTAT_FPVIOL_MASK | FTFA_FSTAT_ACCERR_MASK | FTFA_FSTAT_RDCOLERR_MASK;
+    FTFA->FSTAT = FTFA_FSTAT_CCIF_MASK;
+    while (!(FTFA->FSTAT & FTFA_FSTAT_CCIF_MASK));
+    __enable_irq();
+}    
+    
+    
+
+/* Check if no flash boundary is violated
+   Returns true on violation *//*
+static int check_boundary(int address, unsigned int length) {
+    int temp = (address+length - 1) / K64F_IAP_SECTOR_SIZE;
+    address /= K64F_IAP_SECTOR_SIZE;
+    int retval = (address != temp);
+    #ifdef IAPDEBUG
+    if (retval)
+        printf("IAP: Boundary violation\r\n");
+    #endif
+    return retval;
+}*/
+
+/* Check if address is correctly aligned
+   Returns true on violation */
+static int check_align(int address) {
+    int retval = address & 0x03;
+    #ifdef IAPDEBUG
+    if (retval)
+        printf("IAP: Alignment violation\r\n");
+    #endif
+    return retval;
+}
+
+/* Check if an area of flash memory is erased
+   Returns error code or Success (in case of fully erased) */
+static K64F_IAP_TIAPCode verify_erased(int address, unsigned int length) {
+    #ifdef IAPDEBUG
+    printf("IAP: Verify erased at %x with length %d\r\n", address, length);
+    #endif
+    
+    if (check_align(address)){
+        return K64F_IAP_TIAPCode_AlignError;
+    }
+    
+    //Setup command
+    FTFA->FCCOB0 = Read1s;
+    FTFA->FCCOB1 = (address >> 16) & 0xFF;
+    FTFA->FCCOB2 = (address >> 8) & 0xFF;
+    FTFA->FCCOB3 = address & 0xFF;
+    FTFA->FCCOB4 = (length >> 10) & 0xFF;
+    FTFA->FCCOB5 = (length >> 2) & 0xFF;
+    FTFA->FCCOB6 = 0;
+    
+    run_command();
+    
+    K64F_IAP_TIAPCode retval = check_error();
+    if (retval == K64F_IAP_TIAPCode_RuntimeError) {
+        #ifdef IAPDEBUG
+        printf("IAP: Flash was not erased\r\n");
+        #endif
+        return K64F_IAP_TIAPCode_EraseError;
+    }
+    return retval;        
+}
+
+/* Check if an error occured 
+   Returns error code or Success*/
+static K64F_IAP_TIAPCode check_error(void) {
+    if (FTFA->FSTAT & FTFA_FSTAT_FPVIOL_MASK) {
+        #ifdef IAPDEBUG
+        printf("IAP: Protection violation\r\n");
+        #endif
+        return K64F_IAP_TIAPCode_ProtectionError;
+    }
+    if (FTFA->FSTAT & FTFA_FSTAT_ACCERR_MASK) {
+        #ifdef IAPDEBUG
+        printf("IAP: Flash access error\r\n");
+        #endif
+        return K64F_IAP_TIAPCode_AccessError;
+    }
+    if (FTFA->FSTAT & FTFA_FSTAT_RDCOLERR_MASK) {
+        #ifdef IAPDEBUG
+        printf("IAP: Collision error\r\n");
+        #endif
+        return K64F_IAP_TIAPCode_CollisionError;
+    }
+    if (FTFA->FSTAT & FTFA_FSTAT_MGSTAT0_MASK) {
+        #ifdef IAPDEBUG
+        printf("IAP: Runtime error\r\n");
+        #endif
+        return K64F_IAP_TIAPCode_RuntimeError;
+    }
+    #ifdef IAPDEBUG
+    printf("IAP: No error reported\r\n");
+    #endif
+    return K64F_IAP_TIAPCode_Success;
+}
+#endif