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c404bd97ad
RIOT/cpu/k60/vector.c
Joakim Gebart c404bd97ad k60: Add workaround for errata e4218 
e4218: SIM/FLEXBUS: SIM_SCGC7[FLEXBUS] bit should be cleared when the
FlexBus is not being used.

Errata type: Errata

Description:

The SIM_SCGC7[FLEXBUS] bit is set by default. This means that the
FlexBus will be enabled and come up in global chip select mode. With
some code sequence and register value combinations the core could
attempt to prefetch from the FlexBus even though it might not actually
use the value it prefetched. In the case where the FlexBus is
unconfigured, this can result in a hung bus cycle on the FlexBus.

Workaround:

 - If the FlexBus is not being used, disabled the clock to the FlexBus
   during chip initialization by clearing the SIM_SCGC7[FLEXBUS] bit.
 - If the FlexBus will be used, then enable at least one chip select as
   early in the chip initialization process as possible.
2015-10-25 15:12:22 +01:00

426 lines
13 KiB
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Raw Blame History

/*
* Copyright (C) 2015 Eistec AB
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License v2.1. See the file LICENSE in the top level directory for more
* details.
*/
/**
* @ingroup cpu_k60
* @{
*
* @file
*
* @brief Interrupt vector for K60 MCU.
*
* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
*
* @note It is not necessary to modify this file to define custom interrupt
* service routines. All symbols are defined weak, it is only necessary to
* define a function with the same name in another file to override the default
* interrupt handlers.
*/
/**
* @name Interrupt vector definition
* @{
*/
#include "cpu.h"
#include "vectors_cortexm.h"
#include "wdog.h"
/**
* memory markers as defined in the linker script
*/
extern uint32_t _estack;
void pre_startup(void)
{
/* disable the WDOG */
wdog_disable();
/*
* Workaround for hardware errata e4218: "SIM/FLEXBUS: SIM_SCGC7[FLEXBUS]
* bit should be cleared when the FlexBus is not being used."
*/
BITBAND_REG32(SIM->SCGC7, SIM_SCGC7_FLEXBUS_SHIFT) = 0;
}
void dummy_handler(void)
{
dummy_handler_default();
}
/* Cortex-M specific interrupt vectors */
WEAK_DEFAULT void isr_svc(void);
WEAK_DEFAULT void isr_pendsv(void);
WEAK_DEFAULT void isr_systick(void);
/* K60 specific interrupt vector */
WEAK_DEFAULT void isr_dma0_complete(void);
WEAK_DEFAULT void isr_dma1_complete(void);
WEAK_DEFAULT void isr_dma2_complete(void);
WEAK_DEFAULT void isr_dma3_complete(void);
WEAK_DEFAULT void isr_dma4_complete(void);
WEAK_DEFAULT void isr_dma5_complete(void);
WEAK_DEFAULT void isr_dma6_complete(void);
WEAK_DEFAULT void isr_dma7_complete(void);
WEAK_DEFAULT void isr_dma8_complete(void);
WEAK_DEFAULT void isr_dma9_complete(void);
WEAK_DEFAULT void isr_dma10_complete(void);
WEAK_DEFAULT void isr_dma11_complete(void);
WEAK_DEFAULT void isr_dma12_complete(void);
WEAK_DEFAULT void isr_dma13_complete(void);
WEAK_DEFAULT void isr_dma14_complete(void);
WEAK_DEFAULT void isr_dma15_complete(void);
WEAK_DEFAULT void isr_dma_error(void);
WEAK_DEFAULT void isr_mcm(void);
WEAK_DEFAULT void isr_flash_command_complete(void);
WEAK_DEFAULT void isr_flash_read_collision(void);
WEAK_DEFAULT void isr_low_voltage(void);
WEAK_DEFAULT void isr_llwu(void);
WEAK_DEFAULT void isr_watchdog(void);
WEAK_DEFAULT void isr_random_number_generator(void);
WEAK_DEFAULT void isr_i2c0(void);
WEAK_DEFAULT void isr_i2c1(void);
WEAK_DEFAULT void isr_spi0(void);
WEAK_DEFAULT void isr_spi1(void);
WEAK_DEFAULT void isr_spi2(void);
WEAK_DEFAULT void isr_can0_ored_msg_buffer(void);
WEAK_DEFAULT void isr_can0_bus_off(void);
WEAK_DEFAULT void isr_can0_error(void);
WEAK_DEFAULT void isr_can0_tx_warn(void);
WEAK_DEFAULT void isr_can0_rx_warn(void);
WEAK_DEFAULT void isr_can0_wake_up(void);
WEAK_DEFAULT void isr_i2s0_tx(void);
WEAK_DEFAULT void isr_i2s0_rx(void);
WEAK_DEFAULT void isr_can1_ored_msg_buffer(void);
WEAK_DEFAULT void isr_can1_bus_off(void);
WEAK_DEFAULT void isr_can1_error(void);
WEAK_DEFAULT void isr_can1_tx_warn(void);
WEAK_DEFAULT void isr_can1_rx_warn(void);
WEAK_DEFAULT void isr_can1_wake_up(void);
/* void dummy_handler(void); */
WEAK_DEFAULT void isr_uart0_lon(void);
WEAK_DEFAULT void isr_uart0_status(void);
WEAK_DEFAULT void isr_uart0_error(void);
WEAK_DEFAULT void isr_uart1_status(void);
WEAK_DEFAULT void isr_uart1_error(void);
WEAK_DEFAULT void isr_uart2_status(void);
WEAK_DEFAULT void isr_uart2_error(void);
WEAK_DEFAULT void isr_uart3_status(void);
WEAK_DEFAULT void isr_uart3_error(void);
WEAK_DEFAULT void isr_uart4_status(void);
WEAK_DEFAULT void isr_uart4_error(void);
/* void dummy_handler(void); */
/* void dummy_handler(void); */
WEAK_DEFAULT void isr_adc0(void);
WEAK_DEFAULT void isr_adc1(void);
WEAK_DEFAULT void isr_cmp0(void);
WEAK_DEFAULT void isr_cmp1(void);
WEAK_DEFAULT void isr_cmp2(void);
WEAK_DEFAULT void isr_ftm0(void);
WEAK_DEFAULT void isr_ftm1(void);
WEAK_DEFAULT void isr_ftm2(void);
WEAK_DEFAULT void isr_cmt(void);
WEAK_DEFAULT void isr_rtc_alarm(void);
WEAK_DEFAULT void isr_rtc_seconds(void);
WEAK_DEFAULT void isr_pit0(void);
WEAK_DEFAULT void isr_pit1(void);
WEAK_DEFAULT void isr_pit2(void);
WEAK_DEFAULT void isr_pit3(void);
WEAK_DEFAULT void isr_pdb(void);
WEAK_DEFAULT void isr_usb_otg(void);
WEAK_DEFAULT void isr_usb_charger_detect(void);
WEAK_DEFAULT void isr_enet_1588_timer(void);
WEAK_DEFAULT void isr_enet_tx(void);
WEAK_DEFAULT void isr_enet_rx(void);
WEAK_DEFAULT void isr_enet_error_misc(void);
/* void dummy_handler(void); */
WEAK_DEFAULT void isr_sdhc(void);
WEAK_DEFAULT void isr_dac0(void);
/* void dummy_handler(void); */
WEAK_DEFAULT void isr_tsi(void);
WEAK_DEFAULT void isr_mcg(void);
WEAK_DEFAULT void isr_lptmr0(void);
/* void dummy_handler(void); */
WEAK_DEFAULT void isr_porta_pin_detect(void);
WEAK_DEFAULT void isr_portb_pin_detect(void);
WEAK_DEFAULT void isr_portc_pin_detect(void);
WEAK_DEFAULT void isr_portd_pin_detect(void);
WEAK_DEFAULT void isr_porte_pin_detect(void);
/* void dummy_handler(void); */
/* void dummy_handler(void); */
WEAK_DEFAULT void isr_software(void);
/**
* @brief Interrupt vector definition
*/
__attribute__((section(".vector_table")))
const void *interrupt_vector[] = {
/* Stack pointer */
(void *)(&_estack), /* pointer to the top of the empty stack */
/* Cortex-M4 handlers */
(void*) reset_handler_default, /* entry point of the program */
(void*) nmi_default, /* non maskable interrupt handler */
(void*) hard_fault_default, /* hard fault exception */
(void*) mem_manage_default, /* memory manage exception */
(void*) bus_fault_default, /* bus fault exception */
(void*) usage_fault_default, /* usage fault exception */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) (0UL), /* Reserved */
(void*) isr_svc, /* system call interrupt, in RIOT used for
* switching into thread context on boot */
(void*) debug_mon_default, /* debug monitor exception */
(void*) (0UL), /* Reserved */
(void*) isr_pendsv, /* pendSV interrupt, in RIOT the actual
* context switching is happening here */
(void*) isr_systick, /* SysTick interrupt, not used in RIOT */
/* K60 specific peripheral handlers */
(void*) isr_dma0_complete,
(void*) isr_dma1_complete,
(void*) isr_dma2_complete,
(void*) isr_dma3_complete,
(void*) isr_dma4_complete,
(void*) isr_dma5_complete,
(void*) isr_dma6_complete,
(void*) isr_dma7_complete,
(void*) isr_dma8_complete,
(void*) isr_dma9_complete,
(void*) isr_dma10_complete,
(void*) isr_dma11_complete,
(void*) isr_dma12_complete,
(void*) isr_dma13_complete,
(void*) isr_dma14_complete,
(void*) isr_dma15_complete,
(void*) isr_dma_error,
(void*) isr_mcm,
(void*) isr_flash_command_complete,
(void*) isr_flash_read_collision,
(void*) isr_low_voltage,
(void*) isr_llwu,
(void*) isr_watchdog,
(void*) isr_random_number_generator,
(void*) isr_i2c0,
(void*) isr_i2c1,
(void*) isr_spi0,
(void*) isr_spi1,
(void*) isr_spi2,
(void*) isr_can0_ored_msg_buffer,
(void*) isr_can0_bus_off,
(void*) isr_can0_error,
(void*) isr_can0_tx_warn,
(void*) isr_can0_rx_warn,
(void*) isr_can0_wake_up,
(void*) isr_i2s0_tx,
(void*) isr_i2s0_rx,
(void*) isr_can1_ored_msg_buffer,
(void*) isr_can1_bus_off,
(void*) isr_can1_error,
(void*) isr_can1_tx_warn,
(void*) isr_can1_rx_warn,
(void*) isr_can1_wake_up,
(void*) dummy_handler,
(void*) isr_uart0_lon,
(void*) isr_uart0_status,
(void*) isr_uart0_error,
(void*) isr_uart1_status,
(void*) isr_uart1_error,
(void*) isr_uart2_status,
(void*) isr_uart2_error,
(void*) isr_uart3_status,
(void*) isr_uart3_error,
(void*) isr_uart4_status,
(void*) isr_uart4_error,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) isr_adc0,
(void*) isr_adc1,
(void*) isr_cmp0,
(void*) isr_cmp1,
(void*) isr_cmp2,
(void*) isr_ftm0,
(void*) isr_ftm1,
(void*) isr_ftm2,
(void*) isr_cmt,
(void*) isr_rtc_alarm,
(void*) isr_rtc_seconds,
(void*) isr_pit0,
(void*) isr_pit1,
(void*) isr_pit2,
(void*) isr_pit3,
(void*) isr_pdb,
(void*) isr_usb_otg,
(void*) isr_usb_charger_detect,
(void*) isr_enet_1588_timer,
(void*) isr_enet_tx,
(void*) isr_enet_rx,
(void*) isr_enet_error_misc,
(void*) dummy_handler,
(void*) isr_sdhc,
(void*) isr_dac0,
(void*) dummy_handler,
(void*) isr_tsi,
(void*) isr_mcg,
(void*) isr_lptmr0,
(void*) dummy_handler,
(void*) isr_porta_pin_detect,
(void*) isr_portb_pin_detect,
(void*) isr_portc_pin_detect,
(void*) isr_portd_pin_detect,
(void*) isr_porte_pin_detect,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) isr_software, /* Vector 110 */
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
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(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
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(void*) dummy_handler,
(void*) dummy_handler,
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(void*) dummy_handler,
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(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler,
(void*) dummy_handler /* vector 255 */
};
/** @} */
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