path: root/bsp/smartfusion2/CMSIS/startup_gcc/startup_m2sxxx.S

/*******************************************************************************
 * (c) Copyright 2012-2015 Microsemi SoC Products Group.  All rights reserved.
 * 
 * @file startup_m2sxxx.S
 * @author Microsemi SoC Products Group
 * @brief SmartFusion2 vector table and startup code for CodeSourcery G++.
 *
 * SVN $Revision: 7424 $
 * SVN $Date: 2015-05-19 21:16:09 +0530 (Tue, 19 May 2015) $
 */

    .syntax unified
    .cpu cortex-m3
    .thumb
    
/* #define  UNIT_TEST_FILL_MEMORY   only uncommented if carring out unit test */

/*==============================================================================
 * Vector table
 */
    .global     g_pfnVectors
    .section    .isr_vector,"ax",%progbits    /* added "x" so appears in .lst file even though not executable code- to help in debug process */
    .type       g_pfnVectors, %object
    .size       g_pfnVectors, .-g_pfnVectors
    
g_pfnVectors:
    .word  _estack
    .word  Reset_Handler
    .word  NMI_Handler
    .word  HardFault_Handler
    .word  MemManage_Handler
    .word  BusFault_Handler
    .word  UsageFault_Handler
    .word  0
    .word  0
    .word  0
    .word  0
    .word  SVC_Handler
    .word  DebugMon_Handler
    .word  0
    .word  PendSV_Handler
    .word  SysTick_Handler
    .word  WdogWakeup_IRQHandler
    .word  RTC_Wakeup_IRQHandler
    .word  SPI0_IRQHandler
    .word  SPI1_IRQHandler
    .word  I2C0_IRQHandler
    .word  I2C0_SMBAlert_IRQHandler
    .word  I2C0_SMBus_IRQHandler
    .word  I2C1_IRQHandler
    .word  I2C1_SMBAlert_IRQHandler
    .word  I2C1_SMBus_IRQHandler
    .word  UART0_IRQHandler
    .word  UART1_IRQHandler
    .word  EthernetMAC_IRQHandler
    .word  DMA_IRQHandler
    .word  Timer1_IRQHandler
    .word  Timer2_IRQHandler
    .word  CAN_IRQHandler
    .word  ENVM0_IRQHandler
    .word  ENVM1_IRQHandler
    .word  ComBlk_IRQHandler
    .word  USB_IRQHandler
    .word  USB_DMA_IRQHandler
    .word  PLL_Lock_IRQHandler
    .word  PLL_LockLost_IRQHandler
    .word  CommSwitchError_IRQHandler
    .word  CacheError_IRQHandler
    .word  DDR_IRQHandler
    .word  HPDMA_Complete_IRQHandler
    .word  HPDMA_Error_IRQHandler
    .word  ECC_Error_IRQHandler
    .word  MDDR_IOCalib_IRQHandler
    .word  FAB_PLL_Lock_IRQHandler
    .word  FAB_PLL_LockLost_IRQHandler
    .word  FIC64_IRQHandler
    .word  FabricIrq0_IRQHandler
    .word  FabricIrq1_IRQHandler
    .word  FabricIrq2_IRQHandler
    .word  FabricIrq3_IRQHandler
    .word  FabricIrq4_IRQHandler
    .word  FabricIrq5_IRQHandler
    .word  FabricIrq6_IRQHandler
    .word  FabricIrq7_IRQHandler
    .word  FabricIrq8_IRQHandler
    .word  FabricIrq9_IRQHandler
    .word  FabricIrq10_IRQHandler
    .word  FabricIrq11_IRQHandler
    .word  FabricIrq12_IRQHandler
    .word  FabricIrq13_IRQHandler
    .word  FabricIrq14_IRQHandler
    .word  FabricIrq15_IRQHandler    
    .word  GPIO0_IRQHandler
    .word  GPIO1_IRQHandler
    .word  GPIO2_IRQHandler
    .word  GPIO3_IRQHandler
    .word  GPIO4_IRQHandler
    .word  GPIO5_IRQHandler
    .word  GPIO6_IRQHandler
    .word  GPIO7_IRQHandler
    .word  GPIO8_IRQHandler
    .word  GPIO9_IRQHandler
    .word  GPIO10_IRQHandler
    .word  GPIO11_IRQHandler
    .word  GPIO12_IRQHandler
    .word  GPIO13_IRQHandler
    .word  GPIO14_IRQHandler
    .word  GPIO15_IRQHandler
    .word  GPIO16_IRQHandler
    .word  GPIO17_IRQHandler
    .word  GPIO18_IRQHandler
    .word  GPIO19_IRQHandler
    .word  GPIO20_IRQHandler
    .word  GPIO21_IRQHandler
    .word  GPIO22_IRQHandler
    .word  GPIO23_IRQHandler
    .word  GPIO24_IRQHandler
    .word  GPIO25_IRQHandler
    .word  GPIO26_IRQHandler
    .word  GPIO27_IRQHandler
    .word  GPIO28_IRQHandler
    .word  GPIO29_IRQHandler
    .word  GPIO30_IRQHandler
    .word  GPIO31_IRQHandler
    .word  0
    .word  0
    
/*==============================================================================
 * Reset_Handler
 * Register r11 is used to keep track of whether we need to initialize RAMs
 * because ECC/ SECDED is enabled.
 */
    .global Reset_Handler
    .section    .boot_code,"ax",%progbits	         
    .type   Reset_Handler, %function
Reset_Handler:
_start:
/*------------------------------------------------------------------------------
 * Initialize stack RAM content to initialize the error detection and correction
 * (EDAC). This is done if EDAC is enabled for the eSRAM blocks or the
 * ECC/SECDED is enabled for the MDDR.
 * Register r11 is used to keep track of the RAM intialization decision outcome
 * for later use for heap RAM initialization at the end of the startup code.
 * Please note that the stack has to be located in eSRAM at this point and
 * cannot be located in MDDR since MDDR is not available at this point.
 * The bits of the content of register r11 have the following meaning:
 *  reg11[0]: eSRAM EDAC enabled
 *  reg11[1]: MDDR ECC/SECDED enabled
 */
    mov r11, #0
    ldr r0, SF2_MDDR_MODE_CR
    ldr r0, [r0]
    ldr r1, SF2_EDAC_CR
    ldr r1, [r1]
    and r1, r1, #3
    and r0, r0, #0x1C
    cmp r0, #0x14
    bne check_esram_edac
    orr r11, r11, #2
check_esram_edac:
    cmp r1, #0
    beq check_stack_init
    orr r11, r11, #1
check_stack_init:
    cmp r11, #0
    beq system_init
clear_stack:
    ldr r0, = __stack_start__
    ldr r1, =_estack
    ldr r2, RAM_INIT_PATTERN
    bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments uses r4, r5, r6, r7, r8, r9, and does not preserve contents */
    
/*------------------------------------------------------------------------------
 * Call CMSIS system init function.
 */
 system_init:
    ldr r0, =SystemInit
    blx r0

/*------------------------------------------------------------------------------
 * Modify MDDR configuration if ECC/SECDED is enabled for MDDR.
 * Enable write combining on MDDR bridge, disable non-bufferable regions.
 */
    and r10, r11, 0x2
    cmp r10, #0
    beq remap_memory
    ldr r0, SF2_DDRB_NB_SIZE
    ldr r1, SF2_DDRB_CR
    ldr r2, [r0]
    ldr r3, [r1]
    push {r0, r1, r2, r3}
    mov r2, #0
    mov r3, #0xFF
    str r2, [r0]
    str r3, [r1]
    
/*------------------------------------------------------------------------------
 * Perform memory remapping based on the value of __smartfusion2_memory_remap
 * set in the linker script.
 */
remap_memory:
    ldr r0, =__smartfusion2_memory_remap
    ldr r2, =0
    ldr r3, =1
    cmp r0, #2
    bne check_esram_remap
    /*
     * Remap external RAM to address 0x00000000
     */
    ldr r1, SF2_ESRAM_CR
    str r2, [r1]
    ldr r1, SF2_ENVM_REMAP_CR
    str r2, [r1]
    ldr r1, SF2_DDR_CR
    str r3, [r1]
check_esram_remap:
    cmp r0, #1
    bne check_mirrored_nvm
    /*
     * Remap internal eSRAM to address 0x00000000
     */
    ldr r1, SF2_DDR_CR
    str r2, [r1]
    ldr r1, SF2_ENVM_REMAP_CR
    str r2, [r1]
    ldr r1, SF2_ESRAM_CR
    str r3, [r1]
    
/*------------------------------------------------------------------------------
 * Check if the executable is built for NVM LMA mirrored to VMA address.
 * This is done for debugging executables running out of eNVM with SoftConsole.
 * The .text section should not be copied in this case since both the LMA and
 * VMA point at the eNVM despite the LMA and VMa having different values.
 */
 check_mirrored_nvm:
    ldr r0, =__mirrored_nvm
    cmp r0, #0
    bne copy_data
    
/*------------------------------------------------------------------------------
 * Copy vector table.
 */
    ldr r0, =__vector_table_load
    ldr r1, =__vector_table_start
    ldr r2, =_evector_table
    bl block_copy
    
/*------------------------------------------------------------------------------
 * Copy code section.
 */
copy_text:
    ldr r0, =__text_load
    ldr r1, =__text_start
    ldr r2, =_etext
    bl block_copy
    
/*------------------------------------------------------------------------------
 * Copy data section.
 */

 copy_data:
    ldr r0, =__data_load
    ldr r1, =__data_start
    ldr r2, =_edata
    bl block_copy
    
/*------------------------------------------------------------------------------
 *  Clear .bss
 */
clear_bss:                               
    ldr r0, =__bss_start__
    ldr r1, =__bss_end__
    ldr r2, RAM_INIT_PATTERN
    bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments uses r4, r5, r6, r7, r8, r9, and does not preserve contents */
    
#ifdef UNIT_TEST_FILL_MEMORY
	bl unit_test_fill_memory
#endif

/*------------------------------------------------------------------------------
 * Initialize heap RAM content to initialize the error detection and correction
 * (EDAC). We use the decision made earlier in the startup code of whether or
 * not the stack RAM should be initialized. This decision is held in register
 * r11. A non-zero value indicates that the RAM content should be initialized.
 */
clear_heap:
    cmp r11, #0
    beq call_glob_ctor
    ldr r0, =__heap_start__
    ldr r1, =_eheap
    ldr r2, HEAP_INIT_PATTERN
	bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments uses r4, r5, r6, r7, r8, r9, and does not preserve contents */

/*------------------------------------------------------------------------------
 * Restore MDDR configuration.
 */
    and r10, r11, 0x2
    cmp r10, #0
    beq call_glob_ctor
    pop {r0, r1, r2, r3}
    str r2, [r0]
    str r3, [r1]
    
/*------------------------------------------------------------------------------
 * Call global constructors
 */
    /*
     * Align to word and use 32-bits LDR instruction to ensure the ADD instruction
     * taking PC as argument is aligned on a word boundary.
     */
    .align 4
call_glob_ctor:
    ldr.w r0, =__libc_init_array
    add lr, pc, #3
    bx r0
    
/*------------------------------------------------------------------------------
 * branch to main.
 */
branch_to_main:
    mov r0, #0      /*  ; no arguments  */
    mov r1, #0      /*  ; no argv either */
    ldr pc, =main

ExitLoop:
    B ExitLoop

/*------------------------------------------------------------------------------
 * block copy.
 *
 * r0: source address
 * r1: target address
 * r2: end target address 
 *
 * note: Most efficient if memory aligned. Linker ALIGN(16) command
 * should be used as per example linker scripts.
 * Note 1: If the memory address in r0 or r1, byte copy routine is used
 * Note 2: If r1 < r2, will loop indefinetley to highlight linker issue.
 */
block_copy:
    push {r3, r4, r5, r6, r7, r8, lr}
    cmp r0, r1
    beq block_copy_exit          /* ; Exit early if source and destination the same */
    subs.w r2, r2, r1            /* ; Calculate number of bytes to move */
    bpl  block_copy_address_ok	 /* ; check (end target address) > (target address) => continue */
    b .							 /* ; halt as critical error-  memory map not OK- make it easy to catch in debugger */
block_copy_address_ok:
    /* ; detect if source or target memory addresses unaligned. If so use byte copy routine */
    orr.w r3, r0, r1
    ands.w r3, r3, #3
    beq  block_copy_continue
block_copy_byte_copy:
    bl block_copy_byte
    b  block_copy_exit
block_copy_continue:
	mov  r3, #0
	mov  r8,r2                   /* ; Save copy of byte count */
    asrs r2,r2, #4               /* ; Div by 16 to get number of chunks to move */
    beq block_copy_byte_copy	 /* ; need to use byte copy if less than 16 bytes */
block_copy_loop:
    cmp r2, r3
    itt ne
    ldmne r0!, {r4, r5, r6, r7}
    stmne r1!, {r4, r5, r6, r7}
    add.w r3, r3, #1			/* ; use Thumb2- make sure condition code reg. not updated */
    bne block_copy_loop
	/* ; copy spare bytes at the end if any */
    and r8, #15					/* ; get spare bytes  --check can you do an ands? 	*/
	cmp r8, #0					/* ; no spare bytes at end- end now 	*/
	beq block_copy_exit
copy_spare_bytes:               /* ; From above, R0 contains source address, R1 contains destination address */
	ldrb r4, [r0]
    strb r4, [r1]
    add  r0, #1
    add  r1, #1
  	subs r8, r8, #1
    bne copy_spare_bytes
block_copy_exit:
    pop {r3, r4, r5, r6, r7, r8, pc}

/*
 * block_copy_byte: used if memory not aligned
 * r0: source address
 * r1: target address
 * r2: number of bytes
*/
block_copy_byte:
    push {r3, lr}
	mov  r3, #0
block_copy_byte_loop:            /* ; From above, R0 contains source address, R1 contains destination address */
	ldrb r3, [r0]
    strb r3, [r1]
    add  r0, #1
    add  r1, #1
  	subs r2, r2, #1
    bne block_copy_byte_loop
    pop {r3, pc}

/*;------------------------------------------------------------------------------
; * fill_memory.
; * @brief Fills memory with Pattern contained in r2
; * This routine uses the stmne instruction to copy 4 words at a time which is very efficient
; * The instruction can only write to word aligned memory, hence the code at the start and end of this routine
; * to handle possible unaligned bytes at start and end.
; *
; * @param param1 r0: start address
; * @param param2 r1: end address
; * @param param3 r2: FILL PATTETN
; *
; * @note note: Most efficient if memory aligned. Linker ALIGN(4) command
; * should be used as per example linker scripts
; * Stack is not used in this routine
; * register contents r4, r5, r6, r7, r8, r9, will are used and will be returned undefined 
; * @return none - Used Registers are not preserved
; */

fill_memory:
    /* ;push {r4, r5, r6, r7, r8, r9, lr}	 We will not use stack as may be not available */
    cmp r0, r1
    beq fill_memory_exit        /* ; Exit early if source and destination the same */
/* ; copy non-aligned bytes at the start */
    and.w  r6, r0, #3			/* ; see if non-alaigned bytes at the start 	*/
    cmp r6, #0
    beq fill_memory_end_start   /* ; no spare bytes at start, continue 	*/
    mov    r5, #4
    sub.w  r4, r5, r6			/* ; now have number of non-aligned bytes in r4 */
    mov  r7, #8
    mul  r8, r7, r6				/* ; calculate number of shifts required to initalise pattern for non-aligned bytes */
    mov  r9, r2					/* ; copy pattern */
    ror  r9, r9, r8             	/* ; Rotate right to keep pattern consistent */
fill_memory_spare_bytes_start:  /* ; From above, R0 contains source address, R1 contains destination address */
    cmp r4, #0					/* ; no spare bytes at end- end now 	*/
    beq fill_memory_end_start
    strb r9, [r0]				/* ; fill byte */
    ror.w  r9, r9, r7             	/* ; Rotate right by one byte for the next time, to keep pattern consistent */
    add r0, r0, #1				/* ; add one to address */
    subs r4, r4, #1				/* ; subtract one from byte count 1	*/
    b fill_memory_spare_bytes_start
fill_memory_end_start:
    mov  r6, #0
    mov  r7, r1					 /* ; save end address */
    subs r1, r1, r0              /* ; Calculate number of bytes to fill */
    mov  r8,r1                   /* ; Save copy of byte count */
    asrs r1,r1, #4               /* ; Div by 16 to get number of chunks to move */
    mov  r9, r2					 /* ; copy pattern */
    mov  r4, r2					 /* ; copy pattern */
    mov  r5, r2					 /* ; copy pattern */
    cmp r1, r6					 /* ; compare to see if all chunks copied */
    beq fill_memory_spare_bytes_end
fill_memory_loop:
    it ne
    stmne r0!, {r2, r4, r5, r9}  /* ; copy pattern- note: stmne instruction must me word aligned (address in r0) */
    add.w r6, r6, #1			 /* ; use Thumb2- make sure condition code reg. not updated */
    cmp r1, r6					 /* ; compare to see if all chunks copied */
    bne fill_memory_loop
fill_memory_spare_bytes_end:	 /* ; copy spare bytes at the end if any */
    and.w r8, r8, #15					 /* ; get spare bytes  --check can you do an ands? 	*/
fill_memory_spare_end_loop:      /* ; From above, R0 contains source address, R1 contains destination address */
    cmp r8, #0					 /* ; no spare bytes at end- end now 	*/
    beq fill_memory_exit
    strb r2, [r0]
    ror.w  r2, r2, #8             	 /* ; Rotate right by one byte for the next time, to keep pattern consistent */
    add r0, r0, #1				 /* ; add one to address */
    subs r8, r8, #1				 /* ; subtract one from byte count 1	*/
    b fill_memory_spare_end_loop
fill_memory_exit:
    bx lr				/*; We will not use pop as stack may be not available */
    

/*------------------------------------------------------------------------------
 * unit_test_fill_memory
 * calls fills_memory function with various paramaters
 *
 * r0: start address
 * r1: end address
 * r2: FILL PATTETN
 *
 * Debugger used to check filled memeory is as expected.
 * Note: Last instruction in this routine deliberatly halts code to prevent accidentle enabeling in
 * release code.
 */
#ifdef UNIT_TEST_FILL_MEMORY
    MEM_TEST_PATTERN:      .word   0x12345678
unit_test_fill_memory:
	push {r0, r1, r2, lr}
 	ldr r0, = 0x20000100
    ldr r1, = 0x20000200
    ldr r2, MEM_TEST_PATTERN
 	bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments */
  	ldr r0, = 0x20000300				/* ; source address */
    ldr r1, = 0x20000400				/* ; dest address */
    ldr r2, = 0x200004FF			    /* ; end address */
	bl block_copy						/* ; copy above */
	/* second test */
 	ldr r0, = 0x20003300
    ldr r1, = 0x20003403
    ldr r2, MEM_TEST_PATTERN
 	bl fill_memory
 	ldr r0, = 0x20003300
    ldr r1, = 0x20003500
    ldr r2, = 0x20003603
	bl block_copy
	/* third test */
 	ldr r0, = 0x20000702
    ldr r1, = 0x20000803
    ldr r2, MEM_TEST_PATTERN
 	bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments */
 	ldr r0, = 0x20000702
    ldr r1, = 0x20000902
    ldr r2, = 0x20000A03
	bl block_copy
	/* fourth test */
    ldr r0, = 0x20000B01
    ldr r1, = 0x20000C03
    ldr r2, MEM_TEST_PATTERN
 	bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments */
 	ldr r0, = 0x20000B01
    ldr r1, = 0x20000D01
    ldr r2, = 0x20000E03
	bl block_copy
	/* fith test */
 	ldr r0, = 0x20002D01
    ldr r1, = 0x20002E01
    ldr r2, MEM_TEST_PATTERN
 	bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments */
 	ldr r0, = 0x20002D01
    ldr r1, = 0x20002F01
    ldr r2, = 0x20003001
	bl block_copy
	/* sixth test */
 	ldr r0, = 0x20001903
    ldr r1, = 0x20001904
    ldr r2, MEM_TEST_PATTERN
 	bl fill_memory                      /* ; fill_memory takes r0 - r2 as arguments */
 	ldr r0, = 0x20001903
    ldr r1, = 0x20001A03
    ldr r2, = 0x20001A04
	bl block_copy
	/* ; final test, note: This one will cause a halt in copy function- as designed */
	ldr r0, = 0x20001903
    ldr r1, = 0x20001A03
    ldr r2, = 0x20000A04				/* ; end address < start address */
	bl block_copy
 unit_test_fill_memory_debug:			/* ; delibrately wait here, this function only to be used when carrying out test */
 	b .									/* ; stop debugger here and verify memory as expected in debugger */
 	pop {r0, r1, r2, pc}
#endif
/*==============================================================================
 * NMI_Handler
 */
    .weak   NMI_Handler
    .type   NMI_Handler, %function
NMI_Handler:
    B .

/*==============================================================================
 * HardFault_Handler
 */
    .weak   HardFault_Handler
    .type   HardFault_Handler, %function
HardFault_Handler:
    B .

/*==============================================================================
 * MemManage_Handler
 */
    .weak   MemManage_Handler
    .type   MemManage_Handler, %function
MemManage_Handler:
    B .

/*==============================================================================
 * BusFault_Handler
 */
    .weak   BusFault_Handler
    .type   BusFault_Handler, %function
BusFault_Handler:
    B .

/*==============================================================================
 * UsageFault_Handler
 */
    .weak   UsageFault_Handler
    .type   UsageFault_Handler, %function
UsageFault_Handler:
    B .

/*==============================================================================
 * SVC_Handler
 */
    .weak   SVC_Handler
    .type   SVC_Handler, %function
SVC_Handler:
    B .

/*==============================================================================
 * DebugMon_Handler
 */
    .weak   DebugMon_Handler
    .type   DebugMon_Handler, %function
DebugMon_Handler:
    B .

/*==============================================================================
 * PendSV_Handler
 */
    .weak   PendSV_Handler
    .type   PendSV_Handler, %function
PendSV_Handler:
    B .

/*==============================================================================
 * SysTick_Handler
 */
    .weak   SysTick_Handler
    .type   SysTick_Handler, %function
SysTick_Handler:
    B .

/*==============================================================================
 * WdogWakeup_IRQHandler
 */
    .weak   WdogWakeup_IRQHandler
    .type   WdogWakeup_IRQHandler, %function
WdogWakeup_IRQHandler:
    B .

/*==============================================================================
 * RTC_Wakeup_IRQHandler
 */
    .weak   RTC_Wakeup_IRQHandler
    .type   RTC_Wakeup_IRQHandler, %function
RTC_Wakeup_IRQHandler:
    B .

/*==============================================================================
 * SPI0_IRQHandler
 */
    .weak   SPI0_IRQHandler
    .type   SPI0_IRQHandler, %function
SPI0_IRQHandler:
    B .

/*==============================================================================
 * SPI1_IRQHandler
 */
    .weak   SPI1_IRQHandler
    .type   SPI1_IRQHandler, %function
SPI1_IRQHandler:
    B .

/*==============================================================================
 * I2C0_IRQHandler
 */
    .weak   I2C0_IRQHandler
    .type   I2C0_IRQHandler, %function
I2C0_IRQHandler:
    B .

/*==============================================================================
 * I2C0_SMBAlert_IRQHandler
 */
    .weak   I2C0_SMBAlert_IRQHandler
    .type   I2C0_SMBAlert_IRQHandler, %function
I2C0_SMBAlert_IRQHandler:
    B .

/*==============================================================================
 * I2C0_SMBus_IRQHandler
 */
    .weak   I2C0_SMBus_IRQHandler
    .type   I2C0_SMBus_IRQHandler, %function
I2C0_SMBus_IRQHandler:
    B .

/*==============================================================================
 * I2C1_IRQHandler
 */
    .weak   I2C1_IRQHandler
    .type   I2C1_IRQHandler, %function
I2C1_IRQHandler:
    B .

/*==============================================================================
 * I2C1_SMBAlert_IRQHandler
 */
    .weak   I2C1_SMBAlert_IRQHandler
    .type   I2C1_SMBAlert_IRQHandler, %function
I2C1_SMBAlert_IRQHandler:
    B .

/*==============================================================================
 * I2C1_SMBus_IRQHandler
 */
    .weak   I2C1_SMBus_IRQHandler
    .type   I2C1_SMBus_IRQHandler, %function
I2C1_SMBus_IRQHandler:
    B .

/*==============================================================================
 * UART0_IRQHandler
 */
    .weak   UART0_IRQHandler
    .type   UART0_IRQHandler, %function
UART0_IRQHandler:
    B .

/*==============================================================================
 * UART1_IRQHandler
 */
    .weak   UART1_IRQHandler
    .type   UART1_IRQHandler, %function
UART1_IRQHandler:
    B .
    
/*==============================================================================
 * EthernetMAC_IRQHandler
 */
    .weak   EthernetMAC_IRQHandler
    .type   EthernetMAC_IRQHandler, %function
EthernetMAC_IRQHandler:
    B .

/*==============================================================================
 * DMA_IRQHandler
 */
    .weak   DMA_IRQHandler
    .type   DMA_IRQHandler, %function
DMA_IRQHandler:
    B .

/*==============================================================================
 * Timer1_IRQHandler
 */
    .weak   Timer1_IRQHandler
    .type   Timer1_IRQHandler, %function
Timer1_IRQHandler:
    B .

/*==============================================================================
 * Timer2_IRQHandler
 */
    .weak   Timer2_IRQHandler
    .type   Timer2_IRQHandler, %function
Timer2_IRQHandler:
    B .
    
/*==============================================================================
 * CAN_IRQHandler
 */
    .weak   CAN_IRQHandler
    .type   CAN_IRQHandler, %function
CAN_IRQHandler:
    B .
    
/*==============================================================================
 * ENVM0_IRQHandler
 */
    .weak   ENVM0_IRQHandler
    .type   ENVM0_IRQHandler, %function
ENVM0_IRQHandler:
    B .

/*==============================================================================
 * ENVM1_IRQHandler
 */
    .weak   ENVM1_IRQHandler
    .type   ENVM1_IRQHandler, %function
ENVM1_IRQHandler:
    B .

/*==============================================================================
 * ComBlk_IRQHandler
 */
    .weak   ComBlk_IRQHandler
    .type   ComBlk_IRQHandler, %function
ComBlk_IRQHandler:
    B .
    
/*==============================================================================
 * USB_IRQHandler
 */
    .weak   USB_IRQHandler
    .type   USB_IRQHandler, %function
USB_IRQHandler:
    B .
    
/*==============================================================================
 * USB_DMA_IRQHandler
 */
    .weak   USB_DMA_IRQHandler
    .type   USB_DMA_IRQHandler, %function
USB_DMA_IRQHandler:
    B .

/*==============================================================================
 * PLL_Lock_IRQHandler
 */
    .weak   PLL_Lock_IRQHandler
    .type   PLL_Lock_IRQHandler, %function
PLL_Lock_IRQHandler:
    B .

/*==============================================================================
 * PLL_LockLost_IRQHandler
 */
    .weak   PLL_LockLost_IRQHandler
    .type   PLL_LockLost_IRQHandler, %function
PLL_LockLost_IRQHandler:
    B .

/*==============================================================================
 * CommSwitchError_IRQHandler
 */
    .weak   CommSwitchError_IRQHandler
    .type   CommSwitchError_IRQHandler, %function
CommSwitchError_IRQHandler:
    B .

/*==============================================================================
 * CacheError_IRQHandler
 */
    .weak   CacheError_IRQHandler
    .type   CacheError_IRQHandler, %function
CacheError_IRQHandler:
    B .

/*==============================================================================
 * DDR_IRQHandler
 */
    .weak   DDR_IRQHandler
    .type   DDR_IRQHandler, %function
DDR_IRQHandler:
    B .

/*==============================================================================
 * HPDMA_Complete_IRQHandler
 */
    .weak   HPDMA_Complete_IRQHandler
    .type   HPDMA_Complete_IRQHandler, %function
HPDMA_Complete_IRQHandler:
    B .

/*==============================================================================
 * HPDMA_Error_IRQHandler
 */
    .weak   HPDMA_Error_IRQHandler
    .type   HPDMA_Error_IRQHandler, %function
HPDMA_Error_IRQHandler:
    B .
    
/*==============================================================================
 * ECC_Error_IRQHandler
 */
    .weak   ECC_Error_IRQHandler
    .type   ECC_Error_IRQHandler, %function
ECC_Error_IRQHandler:
    B .

/*==============================================================================
 * MDDR_IOCalib_IRQHandler
 */
    .weak   MDDR_IOCalib_IRQHandler
    .type   MDDR_IOCalib_IRQHandler, %function
MDDR_IOCalib_IRQHandler:
    B .

/*==============================================================================
 * FAB_PLL_Lock_IRQHandler
 */
    .weak   FAB_PLL_Lock_IRQHandler
    .type   FAB_PLL_Lock_IRQHandler, %function    
FAB_PLL_Lock_IRQHandler:
    B .

/*==============================================================================
 * FAB_PLL_LockLost_IRQHandler
 */
    .weak   FAB_PLL_LockLost_IRQHandler
    .type   FAB_PLL_LockLost_IRQHandler, %function        
FAB_PLL_LockLost_IRQHandler:
    B .
    
/*==============================================================================
 * FIC64_IRQHandler
 */
    .weak   FIC64_IRQHandler
    .type   FIC64_IRQHandler, %function            
FIC64_IRQHandler:
    B .
    
/*==============================================================================
 * FabricIrq0_IRQHandler
 */
    .weak   FabricIrq0_IRQHandler
    .type   FabricIrq0_IRQHandler, %function
FabricIrq0_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq1_IRQHandler
 */
    .weak   FabricIrq1_IRQHandler
    .type   FabricIrq1_IRQHandler, %function
FabricIrq1_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq2_IRQHandler
 */
    .weak   FabricIrq2_IRQHandler
    .type   FabricIrq2_IRQHandler, %function
FabricIrq2_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq3_IRQHandler
 */
    .weak   FabricIrq3_IRQHandler
    .type   FabricIrq3_IRQHandler, %function
FabricIrq3_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq4_IRQHandler
 */
    .weak   FabricIrq4_IRQHandler
    .type   FabricIrq4_IRQHandler, %function
FabricIrq4_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq5_IRQHandler
 */
    .weak   FabricIrq5_IRQHandler
    .type   FabricIrq5_IRQHandler, %function
FabricIrq5_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq6_IRQHandler
 */
    .weak   FabricIrq6_IRQHandler
    .type   FabricIrq6_IRQHandler, %function
FabricIrq6_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq7_IRQHandler
 */
    .weak   FabricIrq7_IRQHandler
    .type   FabricIrq7_IRQHandler, %function
FabricIrq7_IRQHandler:
    B .
    
/*==============================================================================
 * FabricIrq8_IRQHandler
 */
    .weak   FabricIrq8_IRQHandler
    .type   FabricIrq8_IRQHandler, %function
FabricIrq8_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq9_IRQHandler
 */
    .weak   FabricIrq9_IRQHandler
    .type   FabricIrq9_IRQHandler, %function
FabricIrq9_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq10_IRQHandler
 */
    .weak   FabricIrq10_IRQHandler
    .type   FabricIrq10_IRQHandler, %function
FabricIrq10_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq11_IRQHandler
 */
    .weak   FabricIrq11_IRQHandler
    .type   FabricIrq11_IRQHandler, %function
FabricIrq11_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq12_IRQHandler
 */
    .weak   FabricIrq12_IRQHandler
    .type   FabricIrq12_IRQHandler, %function
FabricIrq12_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq13_IRQHandler
 */
    .weak   FabricIrq13_IRQHandler
    .type   FabricIrq13_IRQHandler, %function
FabricIrq13_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq14_IRQHandler
 */
    .weak   FabricIrq14_IRQHandler
    .type   FabricIrq14_IRQHandler, %function
FabricIrq14_IRQHandler:
    B .

/*==============================================================================
 * FabricIrq15_IRQHandler
 */
    .weak   FabricIrq15_IRQHandler
    .type   FabricIrq15_IRQHandler, %function
FabricIrq15_IRQHandler:
    B .    

/*==============================================================================
 * GPIO0_IRQHandler
 */
    .weak   GPIO0_IRQHandler
    .type   GPIO0_IRQHandler, %function
GPIO0_IRQHandler:
    B .

/*==============================================================================
 * GPIO1_IRQHandler
 */
    .weak   GPIO1_IRQHandler
    .type   GPIO1_IRQHandler, %function
GPIO1_IRQHandler:
    B .

/*==============================================================================
 * GPIO2_IRQHandler
 */
    .weak   GPIO2_IRQHandler
    .type   GPIO2_IRQHandler, %function
GPIO2_IRQHandler:
    B .

/*==============================================================================
 * GPIO3_IRQHandler
 */
    .weak   GPIO3_IRQHandler
    .type   GPIO3_IRQHandler, %function
GPIO3_IRQHandler:
    B .

/*==============================================================================
 * GPIO4_IRQHandler
 */
    .weak   GPIO4_IRQHandler
    .type   GPIO4_IRQHandler, %function
GPIO4_IRQHandler:
    B .

/*==============================================================================
 * GPIO5_IRQHandler
 */
    .weak   GPIO5_IRQHandler
    .type   GPIO5_IRQHandler, %function
GPIO5_IRQHandler:
    B .

/*==============================================================================
 * GPIO6_IRQHandler
 */
    .weak   GPIO6_IRQHandler
    .type   GPIO6_IRQHandler, %function
GPIO6_IRQHandler:
    B .

/*==============================================================================
 * GPIO7_IRQHandler
 */
    .weak   GPIO7_IRQHandler
    .type   GPIO7_IRQHandler, %function
GPIO7_IRQHandler:
    B .

/*==============================================================================
 * GPIO8_IRQHandler
 */
    .weak   GPIO8_IRQHandler
    .type   GPIO8_IRQHandler, %function
GPIO8_IRQHandler:
    B .

/*==============================================================================
 * GPIO9_IRQHandler
 */
    .weak   GPIO9_IRQHandler
    .type   GPIO9_IRQHandler, %function
GPIO9_IRQHandler:
    B .

/*==============================================================================
 * GPIO10_IRQHandler
 */
    .weak   GPIO10_IRQHandler
    .type   GPIO10_IRQHandler, %function
GPIO10_IRQHandler:
    B .

/*==============================================================================
 * GPIO11_IRQHandler
 */
    .weak   GPIO11_IRQHandler
    .type   GPIO11_IRQHandler, %function
GPIO11_IRQHandler:
    B .

/*==============================================================================
 * GPIO12_IRQHandler
 */
    .weak   GPIO12_IRQHandler
    .type   GPIO12_IRQHandler, %function
GPIO12_IRQHandler:
    B .

/*==============================================================================
 * GPIO13_IRQHandler
 */
    .weak   GPIO13_IRQHandler
    .type   GPIO13_IRQHandler, %function
GPIO13_IRQHandler:
    B .

/*==============================================================================
 * GPIO14_IRQHandler
 */
    .weak   GPIO14_IRQHandler
    .type   GPIO14_IRQHandler, %function
GPIO14_IRQHandler:
    B .

/*==============================================================================
 * GPIO15_IRQHandler
 */
    .weak   GPIO15_IRQHandler
    .type   GPIO15_IRQHandler, %function
GPIO15_IRQHandler:
    B .

/*==============================================================================
 * GPIO16_IRQHandler
 */
    .weak   GPIO16_IRQHandler
    .type   GPIO16_IRQHandler, %function
GPIO16_IRQHandler:
    B .

/*==============================================================================
 * GPIO17_IRQHandler
 */
    .weak   GPIO17_IRQHandler
    .type   GPIO17_IRQHandler, %function
GPIO17_IRQHandler:
    B .

/*==============================================================================
 * GPIO18_IRQHandler
 */
    .weak   GPIO18_IRQHandler
    .type   GPIO18_IRQHandler, %function
GPIO18_IRQHandler:
    B .

/*==============================================================================
 * GPIO19_IRQHandler
 */
    .weak   GPIO19_IRQHandler
    .type   GPIO19_IRQHandler, %function
GPIO19_IRQHandler:
    B .

/*==============================================================================
 * GPIO20_IRQHandler
 */
    .weak   GPIO20_IRQHandler
    .type   GPIO20_IRQHandler, %function
GPIO20_IRQHandler:
    B .

/*==============================================================================
 * GPIO21_IRQHandler
 */
    .weak   GPIO21_IRQHandler
    .type   GPIO21_IRQHandler, %function
GPIO21_IRQHandler:
    B .

/*==============================================================================
 * GPIO22_IRQHandler
 */
    .weak   GPIO22_IRQHandler
    .type   GPIO22_IRQHandler, %function
GPIO22_IRQHandler:
    B .

/*==============================================================================
 * GPIO23_IRQHandler
 */
    .weak   GPIO23_IRQHandler
    .type   GPIO23_IRQHandler, %function
GPIO23_IRQHandler:
    B .

/*==============================================================================
 * GPIO24_IRQHandler
 */
    .weak   GPIO24_IRQHandler
    .type   GPIO24_IRQHandler, %function
GPIO24_IRQHandler:
    B .

/*==============================================================================
 * GPIO25_IRQHandler
 */
    .weak   GPIO25_IRQHandler
    .type   GPIO25_IRQHandler, %function
GPIO25_IRQHandler:
    B .

/*==============================================================================
 * GPIO26_IRQHandler
 */
    .weak   GPIO26_IRQHandler
    .type   GPIO26_IRQHandler, %function
GPIO26_IRQHandler:
    B .

/*==============================================================================
 * GPIO27_IRQHandler
 */
    .weak   GPIO27_IRQHandler
    .type   GPIO27_IRQHandler, %function
GPIO27_IRQHandler:
    B .

/*==============================================================================
 * GPIO28_IRQHandler
 */
    .weak   GPIO28_IRQHandler
    .type   GPIO28_IRQHandler, %function
GPIO28_IRQHandler:
    B .

/*==============================================================================
 * GPIO29_IRQHandler
 */
    .weak   GPIO29_IRQHandler
    .type   GPIO29_IRQHandler, %function
GPIO29_IRQHandler:
    B .

/*==============================================================================
 * GPIO30_IRQHandler
 */
    .weak   GPIO30_IRQHandler
    .type   GPIO30_IRQHandler, %function
GPIO30_IRQHandler:
    B .

/*==============================================================================
 * GPIO31_IRQHandler
 */
    .weak   GPIO31_IRQHandler
    .type   GPIO31_IRQHandler, %function
GPIO31_IRQHandler:
    B .

/*==============================================================================
 * mscc_post_hw_cfg_init
 */
    .weak   mscc_post_hw_cfg_init
    .type   mscc_post_hw_cfg_init, %function
mscc_post_hw_cfg_init:
    BX LR

/*==============================================================================
 * Constants:
 */
RAM_INIT_PATTERN:       .word   0x00000000
HEAP_INIT_PATTERN:      .word   0xA2A2A2A2
SF2_ESRAM_CR:           .word   0x40038000
SF2_DDR_CR:             .word   0x40038008
SF2_ENVM_REMAP_CR:      .word   0x40038010
SF2_DDRB_NB_SIZE:       .word   0x40038030
SF2_DDRB_CR:            .word   0x40038034
SF2_EDAC_CR:            .word   0x40038038
SF2_MDDR_MODE_CR:       .word   0x40020818
 
.end