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5b1457e4ab
According to the Procedure Call Standard for the ARM Architecture (AAPCS) - ABI r2.09 [1], §5.2.1.2, the stack pointer must be double-word-aligned at a public interface. The stack implementation being full-descending, this requires that the top of stack be double-word-aligned too. [1] http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042e/IHI0042E_aapcs.pdf Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
329 lines
13 KiB
C
329 lines
13 KiB
C
/*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \addtogroup cc2538
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* @{
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*
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* \file
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* Startup code for the cc2538 chip, to be used when building with gcc
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*/
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#include "contiki.h"
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#include "reg.h"
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#include "flash.h"
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#include "sys-ctrl.h"
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#include "rom-util.h"
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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extern int main(void);
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/*---------------------------------------------------------------------------*/
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/* System handlers provided here */
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void reset_handler(void);
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void nmi_handler(void);
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void default_handler(void);
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/* System Handler and ISR prototypes implemented elsewhere */
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void clock_isr(void); /* SysTick Handler */
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void gpio_port_a_isr(void);
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void gpio_port_b_isr(void);
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void gpio_port_c_isr(void);
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void gpio_port_d_isr(void);
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void rtimer_isr(void);
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void cc2538_rf_rx_tx_isr(void);
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void cc2538_rf_err_isr(void);
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void udma_isr(void);
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void udma_err_isr(void);
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void crypto_isr(void);
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void pka_isr(void);
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/* Link in the USB ISR only if USB is enabled */
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#if USB_SERIAL_CONF_ENABLE
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void usb_isr(void);
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#else
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#define usb_isr default_handler
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#endif
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/* Likewise for the UART[01] ISRs */
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#if UART_CONF_ENABLE
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void uart0_isr(void);
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void uart1_isr(void);
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#else /* UART_CONF_ENABLE */
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#define uart0_isr default_handler
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#define uart1_isr default_handler
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#endif /* UART_CONF_ENABLE */
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/* Boot Loader Backdoor selection */
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#if FLASH_CCA_CONF_BOOTLDR_BACKDOOR
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/* Backdoor enabled */
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#if FLASH_CCA_CONF_BOOTLDR_BACKDOOR_ACTIVE_HIGH
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#define FLASH_CCA_BOOTLDR_CFG_ACTIVE_LEVEL FLASH_CCA_BOOTLDR_CFG_ACTIVE_HIGH
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#else
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#define FLASH_CCA_BOOTLDR_CFG_ACTIVE_LEVEL 0
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#endif
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#if ((FLASH_CCA_CONF_BOOTLDR_BACKDOOR_PORT_A_PIN < 0) || (FLASH_CCA_CONF_BOOTLDR_BACKDOOR_PORT_A_PIN > 7))
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#error Invalid boot loader backdoor pin. Please set FLASH_CCA_CONF_BOOTLDR_BACKDOOR_PORT_A_PIN between 0 and 7 (indicating PA0 - PA7).
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#endif
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#define FLASH_CCA_BOOTLDR_CFG (FLASH_CCA_BOOTLDR_CFG_ENABLE \
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| FLASH_CCA_BOOTLDR_CFG_ACTIVE_LEVEL \
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| (FLASH_CCA_CONF_BOOTLDR_BACKDOOR_PORT_A_PIN << FLASH_CCA_BOOTLDR_CFG_PORT_A_PIN_S))
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#else
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#define FLASH_CCA_BOOTLDR_CFG FLASH_CCA_BOOTLDR_CFG_DISABLE
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#endif
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/*---------------------------------------------------------------------------*/
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/* Allocate stack space */
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static uint64_t stack[256] __attribute__ ((section(".stack")));
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/*---------------------------------------------------------------------------*/
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__attribute__((__section__(".vectors")))
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void(*const vectors[])(void) =
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{
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(void (*)(void))((unsigned long)stack + sizeof(stack)), /* Stack pointer */
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reset_handler, /* Reset handler */
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nmi_handler, /* The NMI handler */
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default_handler, /* The hard fault handler */
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default_handler, /* 4 The MPU fault handler */
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default_handler, /* 5 The bus fault handler */
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default_handler, /* 6 The usage fault handler */
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0, /* 7 Reserved */
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0, /* 8 Reserved */
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0, /* 9 Reserved */
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0, /* 10 Reserved */
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default_handler, /* 11 SVCall handler */
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default_handler, /* 12 Debug monitor handler */
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0, /* 13 Reserved */
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default_handler, /* 14 The PendSV handler */
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clock_isr, /* 15 The SysTick handler */
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gpio_port_a_isr, /* 16 GPIO Port A */
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gpio_port_b_isr, /* 17 GPIO Port B */
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gpio_port_c_isr, /* 18 GPIO Port C */
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gpio_port_d_isr, /* 19 GPIO Port D */
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0, /* 20 none */
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uart0_isr, /* 21 UART0 Rx and Tx */
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uart1_isr, /* 22 UART1 Rx and Tx */
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default_handler, /* 23 SSI0 Rx and Tx */
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default_handler, /* 24 I2C Master and Slave */
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0, /* 25 Reserved */
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0, /* 26 Reserved */
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0, /* 27 Reserved */
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0, /* 28 Reserved */
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0, /* 29 Reserved */
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default_handler, /* 30 ADC Sequence 0 */
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0, /* 31 Reserved */
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0, /* 32 Reserved */
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0, /* 33 Reserved */
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default_handler, /* 34 Watchdog timer, timer 0 */
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default_handler, /* 35 Timer 0 subtimer A */
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default_handler, /* 36 Timer 0 subtimer B */
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default_handler, /* 37 Timer 1 subtimer A */
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default_handler, /* 38 Timer 1 subtimer B */
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default_handler, /* 39 Timer 2 subtimer A */
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default_handler, /* 40 Timer 2 subtimer B */
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default_handler, /* 41 Analog Comparator 0 */
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default_handler, /* 42 RFCore Rx/Tx (Alternate) */
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default_handler, /* 43 RFCore Error (Alternate) */
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default_handler, /* 44 System Control */
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default_handler, /* 45 FLASH Control */
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default_handler, /* 46 AES (Alternate) */
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default_handler, /* 47 PKA (Alternate) */
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default_handler, /* 48 SM Timer (Alternate) */
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default_handler, /* 49 MacTimer (Alternate) */
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default_handler, /* 50 SSI1 Rx and Tx */
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default_handler, /* 51 Timer 3 subtimer A */
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default_handler, /* 52 Timer 3 subtimer B */
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0, /* 53 Reserved */
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0, /* 54 Reserved */
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0, /* 55 Reserved */
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0, /* 56 Reserved */
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0, /* 57 Reserved */
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0, /* 58 Reserved */
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0, /* 59 Reserved */
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0, /* 60 Reserved */
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0, /* 61 Reserved */
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udma_isr, /* 62 uDMA */
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udma_err_isr, /* 63 uDMA Error */
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0, /* 64 64-155 are not in use */
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0, /* 65 */
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0, /* 66 */
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0, /* 67 */
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0, /* 68 */
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0, /* 69 */
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0, /* 70 */
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0, /* 71 */
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0, /* 72 */
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0, /* 73 */
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0, /* 74 */
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0, /* 75 */
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0, /* 76 */
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0, /* 77 */
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0, /* 78 */
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0, /* 79 */
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0, /* 80 */
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0, /* 81 */
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0, /* 82 */
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0, /* 83 */
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0, /* 84 */
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0, /* 85 */
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0, /* 86 */
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0, /* 87 */
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0, /* 88 */
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0, /* 89 */
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0, /* 90 */
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0, /* 91 */
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0, /* 92 */
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0, /* 93 */
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0, /* 94 */
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0, /* 95 */
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0, /* 96 */
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0, /* 97 */
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0, /* 98 */
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0, /* 99 */
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0, /* 100 */
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0, /* 101 */
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0, /* 102 */
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0, /* 103 */
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0, /* 104 */
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0, /* 105 */
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0, /* 106 */
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0, /* 107 */
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0, /* 108 */
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0, /* 109 */
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0, /* 110 */
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0, /* 111 */
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0, /* 112 */
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0, /* 113 */
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0, /* 114 */
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0, /* 115 */
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0, /* 116 */
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0, /* 117 */
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0, /* 118 */
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0, /* 119 */
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0, /* 120 */
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0, /* 121 */
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0, /* 122 */
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0, /* 123 */
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0, /* 124 */
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0, /* 125 */
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0, /* 126 */
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0, /* 127 */
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0, /* 128 */
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0, /* 129 */
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0, /* 130 */
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0, /* 131 */
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0, /* 132 */
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0, /* 133 */
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0, /* 134 */
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0, /* 135 */
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0, /* 136 */
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0, /* 137 */
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0, /* 138 */
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0, /* 139 */
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0, /* 140 */
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0, /* 141 */
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0, /* 142 */
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0, /* 143 */
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0, /* 144 */
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0, /* 145 */
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0, /* 146 */
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0, /* 147 */
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0, /* 148 */
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0, /* 149 */
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0, /* 150 */
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0, /* 151 */
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0, /* 152 */
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0, /* 153 */
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0, /* 154 */
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0, /* 155 */
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usb_isr, /* 156 USB */
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cc2538_rf_rx_tx_isr, /* 157 RFCORE RX/TX */
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cc2538_rf_err_isr, /* 158 RFCORE Error */
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crypto_isr, /* 159 AES */
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pka_isr, /* 160 PKA */
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rtimer_isr, /* 161 SM Timer */
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default_handler, /* 162 MACTimer */
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};
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/*---------------------------------------------------------------------------*/
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__attribute__((__section__(".flashcca")))
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const flash_cca_lock_page_t flash_cca_lock_page = {
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FLASH_CCA_BOOTLDR_CFG, /* Boot loader backdoor configuration */
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FLASH_CCA_IMAGE_VALID, /* Image valid */
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&vectors, /* Vector table */
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/* Unlock all pages and debug */
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{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
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};
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/*---------------------------------------------------------------------------*/
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/* Linker constructs indicating .data and .bss segment locations */
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extern uint8_t _ldata;
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extern uint8_t _data;
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extern uint8_t _edata;
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extern uint8_t _bss;
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extern uint8_t _ebss;
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/*---------------------------------------------------------------------------*/
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/* Weak interrupt handlers. */
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void
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nmi_handler(void)
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{
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reset_handler();
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while(1);
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}
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/*---------------------------------------------------------------------------*/
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void
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default_handler(void)
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{
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while(1);
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}
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/*---------------------------------------------------------------------------*/
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void
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reset_handler(void)
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{
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REG(SYS_CTRL_EMUOVR) = 0xFF;
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/* Copy the data segment initializers from flash to SRAM. */
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rom_util_memcpy(&_data, &_ldata, &_edata - &_data);
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/* Zero-fill the bss segment. */
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rom_util_memset(&_bss, 0, &_ebss - &_bss);
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/* call the application's entry point. */
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main();
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/* End here if main () returns */
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while(1);
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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