Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 1 | /* ----------------------------------------------------------------------------
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| 2 | * ATMEL Microcontroller Software Support
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| 3 | * ----------------------------------------------------------------------------
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| 4 | * Copyright (c) 2010, Atmel Corporation
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Kévin Redon | 432ba51 | 2018-05-21 17:13:40 +0200 | [diff] [blame] | 5 | * Copyright (C) 2017, Harald Welte <laforge@gnumonks.org>
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Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 6 | *
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| 7 | * All rights reserved.
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| 8 | *
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| 9 | * Redistribution and use in source and binary forms, with or without
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| 10 | * modification, are permitted provided that the following conditions are met:
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| 11 | *
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| 12 | * - Redistributions of source code must retain the above copyright notice,
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| 13 | * this list of conditions and the disclaimer below.
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| 14 | *
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| 15 | * Atmel's name may not be used to endorse or promote products derived from
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| 16 | * this software without specific prior written permission.
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| 17 | *
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| 18 | * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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| 21 | * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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| 24 | * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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| 25 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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| 27 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | * ----------------------------------------------------------------------------
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| 29 | */
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| 30 |
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| 31 | /*----------------------------------------------------------------------------
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| 32 | * Headers
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| 33 | *----------------------------------------------------------------------------*/
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| 34 |
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| 35 | #include "board.h"
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| 36 | #include "board_lowlevel.h"
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| 37 |
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| 38 | /*----------------------------------------------------------------------------
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| 39 | * Exported variables
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| 40 | *----------------------------------------------------------------------------*/
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| 41 |
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| 42 | /* Stack Configuration */
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| 43 | #define STACK_SIZE 0x900 /** Stack size (in DWords) */
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| 44 | __attribute__ ((aligned(8),section(".stack")))
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| 45 | uint32_t pdwStack[STACK_SIZE] ;
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| 46 |
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| 47 | /* Initialize segments */
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| 48 | extern uint32_t _sfixed;
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| 49 | extern uint32_t _efixed;
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| 50 | extern uint32_t _etext;
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| 51 | extern uint32_t _srelocate;
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| 52 | extern uint32_t _erelocate;
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| 53 | extern uint32_t _szero;
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| 54 | extern uint32_t _ezero;
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| 55 |
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| 56 |
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| 57 | /*----------------------------------------------------------------------------
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| 58 | * ProtoTypes
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| 59 | *----------------------------------------------------------------------------*/
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Christina Quast | 8be71e4 | 2014-12-02 13:06:01 +0100 | [diff] [blame] | 60 |
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| 61 | /** \cond DOXYGEN_SHOULD_SKIP_THIS */
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Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 62 | extern int main( void ) ;
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Christina Quast | 8be71e4 | 2014-12-02 13:06:01 +0100 | [diff] [blame] | 63 | /** \endcond */
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Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 64 | void ResetException( void ) ;
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Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 65 |
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| 66 | /*------------------------------------------------------------------------------
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| 67 | * Exception Table
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| 68 | *------------------------------------------------------------------------------*/
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| 69 |
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| 70 | __attribute__((section(".vectors")))
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| 71 | IntFunc exception_table[] = {
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| 72 |
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| 73 | /* Configure Initial Stack Pointer, using linker-generated symbols */
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| 74 | (IntFunc)(&pdwStack[STACK_SIZE-1]),
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| 75 | ResetException,
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| 76 |
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| 77 | NMI_Handler,
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| 78 | HardFault_Handler,
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| 79 | MemManage_Handler,
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| 80 | BusFault_Handler,
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| 81 | UsageFault_Handler,
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| 82 | 0, 0, 0, 0, /* Reserved */
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| 83 | SVC_Handler,
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| 84 | DebugMon_Handler,
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| 85 | 0, /* Reserved */
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| 86 | PendSV_Handler,
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| 87 | SysTick_Handler,
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| 88 |
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| 89 | /* Configurable interrupts */
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| 90 | SUPC_IrqHandler, /* 0 Supply Controller */
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| 91 | RSTC_IrqHandler, /* 1 Reset Controller */
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| 92 | RTC_IrqHandler, /* 2 Real Time Clock */
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| 93 | RTT_IrqHandler, /* 3 Real Time Timer */
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| 94 | WDT_IrqHandler, /* 4 Watchdog Timer */
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| 95 | PMC_IrqHandler, /* 5 PMC */
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| 96 | EEFC_IrqHandler, /* 6 EEFC */
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| 97 | IrqHandlerNotUsed, /* 7 Reserved */
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| 98 | UART0_IrqHandler, /* 8 UART0 */
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| 99 | UART1_IrqHandler, /* 9 UART1 */
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| 100 | SMC_IrqHandler, /* 10 SMC */
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| 101 | PIOA_IrqHandler, /* 11 Parallel IO Controller A */
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| 102 | PIOB_IrqHandler, /* 12 Parallel IO Controller B */
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| 103 | PIOC_IrqHandler, /* 13 Parallel IO Controller C */
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| 104 | USART0_IrqHandler, /* 14 USART 0 */
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| 105 | USART1_IrqHandler, /* 15 USART 1 */
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| 106 | IrqHandlerNotUsed, /* 16 Reserved */
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| 107 | IrqHandlerNotUsed, /* 17 Reserved */
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| 108 | MCI_IrqHandler, /* 18 MCI */
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| 109 | TWI0_IrqHandler, /* 19 TWI 0 */
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| 110 | TWI1_IrqHandler, /* 20 TWI 1 */
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| 111 | SPI_IrqHandler, /* 21 SPI */
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| 112 | SSC_IrqHandler, /* 22 SSC */
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| 113 | TC0_IrqHandler, /* 23 Timer Counter 0 */
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| 114 | TC1_IrqHandler, /* 24 Timer Counter 1 */
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| 115 | TC2_IrqHandler, /* 25 Timer Counter 2 */
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| 116 | TC3_IrqHandler, /* 26 Timer Counter 3 */
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| 117 | TC4_IrqHandler, /* 27 Timer Counter 4 */
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| 118 | TC5_IrqHandler, /* 28 Timer Counter 5 */
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| 119 | ADC_IrqHandler, /* 29 ADC controller */
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| 120 | DAC_IrqHandler, /* 30 DAC controller */
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| 121 | PWM_IrqHandler, /* 31 PWM */
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| 122 | CRCCU_IrqHandler, /* 32 CRC Calculation Unit */
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| 123 | ACC_IrqHandler, /* 33 Analog Comparator */
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| 124 | USBD_IrqHandler, /* 34 USB Device Port */
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| 125 | IrqHandlerNotUsed /* 35 not used */
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| 126 | };
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| 127 |
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Harald Welte | 0af4948 | 2017-03-02 23:18:02 +0100 | [diff] [blame] | 128 | #if defined(BOARD_USB_DFU) && defined(APPLICATION_dfu)
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Harald Welte | d1e9634 | 2017-03-03 00:34:17 +0100 | [diff] [blame] | 129 | #include "usb/device/dfu/dfu.h"
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Harald Welte | 7ed6f3b | 2017-02-26 17:00:43 +0100 | [diff] [blame] | 130 | static void BootIntoApp(void)
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| 131 | {
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| 132 | unsigned int *pSrc;
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| 133 | void (*appReset)(void);
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| 134 |
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| 135 | pSrc = (unsigned int *) ((unsigned char *)IFLASH_ADDR + BOARD_DFU_BOOT_SIZE);
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| 136 | SCB->VTOR = ((unsigned int)(pSrc)) | (0x0 << 7);
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Kévin Redon | 76be7c8 | 2018-05-21 19:33:50 +0200 | [diff] [blame] | 137 | appReset = (void(*)(void))pSrc[1];
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Harald Welte | cab6641 | 2017-03-02 19:22:50 +0100 | [diff] [blame] | 138 |
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Harald Welte | d1e9634 | 2017-03-03 00:34:17 +0100 | [diff] [blame] | 139 | g_dfu->state = DFU_STATE_appIDLE;
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Harald Welte | cab6641 | 2017-03-02 19:22:50 +0100 | [diff] [blame] | 140 |
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Harald Welte | 7ed6f3b | 2017-02-26 17:00:43 +0100 | [diff] [blame] | 141 | appReset();
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| 142 | }
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| 143 | #endif
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| 144 |
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Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 145 | /**
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| 146 | * \brief This is the code that gets called on processor reset.
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| 147 | * To initialize the device, and call the main() routine.
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| 148 | */
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| 149 | void ResetException( void )
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| 150 | {
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| 151 | uint32_t *pSrc, *pDest ;
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| 152 |
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| 153 | /* Low level Initialize */
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| 154 | LowLevelInit() ;
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| 155 |
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Harald Welte | 0af4948 | 2017-03-02 23:18:02 +0100 | [diff] [blame] | 156 |
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| 157 | #if defined(BOARD_USB_DFU) && defined(APPLICATION_dfu)
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Harald Welte | 91fc402 | 2017-03-03 01:05:22 +0100 | [diff] [blame] | 158 | /* we are before the text segment has been relocated, so g_dfu is
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| 159 | * not initialized yet */
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| 160 | g_dfu = &_g_dfu;
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Harald Welte | 1405100 | 2017-03-04 19:17:27 +0100 | [diff] [blame] | 161 | if ((g_dfu->magic != USB_DFU_MAGIC) && !USBDFU_OverrideEnterDFU()) {
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Kévin Redon | 80303c1 | 2018-06-17 22:35:17 +0200 | [diff] [blame] | 162 | /* start application if valid
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| 163 | * the application starts with the vector table
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| 164 | * the first entry in the vector table is the initial stack pointer (SP) address
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| 165 | * the stack will be placed in RAM, which begins at 0x2000 0000
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| 166 | * there is up to 48 KB of RAM (0xc000)
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| 167 | * since the stack grown "downwards" it should start at the end of the RAM: max 0x2000 c000
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| 168 | * if the SP is not in this range (e.g. flash has been erased) there is no valid application
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| 169 | * the second entry in the vector table is the reset address, corresponding to the application start
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| 170 | */
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| 171 | if (((*((uint32_t*)(IFLASH_ADDR+BOARD_DFU_BOOT_SIZE)))&0xFFFF0000)==0x20000000) {
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| 172 | BootIntoApp();
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| 173 | /* Infinite loop */
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| 174 | while ( 1 ) ;
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| 175 | }
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Harald Welte | d1e9634 | 2017-03-03 00:34:17 +0100 | [diff] [blame] | 176 | }
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Harald Welte | 7ed6f3b | 2017-02-26 17:00:43 +0100 | [diff] [blame] | 177 | #endif
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| 178 |
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Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 179 | /* Initialize the relocate segment */
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| 180 | pSrc = &_etext ;
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| 181 | pDest = &_srelocate ;
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| 182 |
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| 183 | if ( pSrc != pDest )
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| 184 | {
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| 185 | for ( ; pDest < &_erelocate ; )
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| 186 | {
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| 187 | *pDest++ = *pSrc++ ;
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| 188 | }
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| 189 | }
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| 190 |
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| 191 | /* Clear the zero segment */
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| 192 | for ( pDest = &_szero ; pDest < &_ezero ; )
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| 193 | {
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| 194 | *pDest++ = 0;
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| 195 | }
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| 196 |
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| 197 | /* Set the vector table base address */
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| 198 | pSrc = (uint32_t *)&_sfixed;
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| 199 | SCB->VTOR = ( (uint32_t)pSrc & SCB_VTOR_TBLOFF_Msk ) ;
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| 200 |
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| 201 | if ( ((uint32_t)pSrc >= IRAM_ADDR) && ((uint32_t)pSrc < IRAM_ADDR+IRAM_SIZE) )
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| 202 | {
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| 203 | SCB->VTOR |= 1 << SCB_VTOR_TBLBASE_Pos ;
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| 204 | }
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| 205 |
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Harald Welte | 7ed6f3b | 2017-02-26 17:00:43 +0100 | [diff] [blame] | 206 | /* App should have disabled interrupts during the transition */
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| 207 | __enable_irq();
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| 208 |
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Harald Welte | db17e83 | 2017-03-02 23:19:13 +0100 | [diff] [blame] | 209 | /* Branch to main function */
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| 210 | main() ;
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| 211 |
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Christina Quast | b0a0570 | 2014-11-28 10:27:32 +0100 | [diff] [blame] | 212 | /* Infinite loop */
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| 213 | while ( 1 ) ;
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| 214 | }
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| 215 |
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