eCos初探之redboot重启命令：reset

void do_reset(int argc, char *argv[])
{
    diag_printf("... Resetting.");
    CYGACC_CALL_IF_DELAY_US(2*100000);
    diag_printf("\n");
    CYGACC_CALL_IF_RESET();
    diag_printf("!! oops, RESET not working on this platform\n");
}

#define CYGACC_CALL_IF_RESET()    CYGACC_CALL_VV0(__call_if_reset_t*, CYGNUM_CALL_IF_RESET)()
   __call_voidVV0(CYGNUM_CALL_IF_RESET, __call_if_reset_t, void)

static __call_if_reset_t reset;
static void reset(void)
{
    CYGARC_HAL_SAVE_GP();
    // With luck, the platform defines some magic that will cause a hardware
    // reset.
#ifdef HAL_PLATFORM_RESET
    HAL_PLATFORM_RESET();
#endif
#ifdef HAL_PLATFORM_RESET_ENTRY
    // If that's not the case (above is an empty statement) there may
    // be defined an address we can jump to - and effectively
    // reinitialize the system. Not quite as good as a reset, but it
    // is often enough.
    goto *HAL_PLATFORM_RESET_ENTRY;
#else
#error " no RESET_ENTRY"
#endif
    CYG_FAIL("Reset failed");
    CYGARC_HAL_RESTORE_GP();
}

#define HAL_PLATFORM_RESET_ENTRY &hal_reset_vsr

//==========================================================================
// Main entry point
//
// Enter here from reset via slot 1 of VSR table. The stack pointer is
// already set to the value in VSR slot 0, usually the top of internal
// SRAM.

#define HAL_PLATFORM_RESET()                                            {                                                                           HAL_WRITE_UINT32(CYGARC_REG_NVIC_BASE+CYGARC_REG_NVIC_AIRCR,                             CYGARC_REG_NVIC_AIRCR_KEY|                                              CYGARC_REG_NVIC_AIRCR_SYSRESETREQ );                   for(;;);                                                            }

_register_ = CYGARC_REG_NVIC_BASE+CYGARC_REG_NVIC_AIRCR = 0xE000E000 + 0xD0C = 0xE000ED0C
_value_ = CYGARC_REG_NVIC_AIRCR_KEY | CYGARC_REG_NVIC_AIRCR_SYSRESETREQ = (0x5FA<<16) + (1<<2)