1 | /* |
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2 | * NXP/Philips LPC22XX/LPC21xx Interrupt handler |
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3 | * Ray 2007 <rayx.cn@gmail.com> to support LPC ARM |
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4 | * The license and distribution terms for this file may be |
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5 | * found in the file LICENSE in this distribution or at |
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6 | * |
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7 | * http://www.rtems.com/license/LICENSE. |
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8 | * |
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9 | * |
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10 | * $Id$ |
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11 | */ |
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12 | #include <irq.h> |
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13 | #include <bsp.h> |
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14 | #include <lpc22xx.h> |
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15 | |
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16 | |
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17 | extern void default_int_handler(void); |
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18 | |
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19 | /* |
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20 | * Interrupt system initialization. Disable interrupts, clear |
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21 | * any that are pending. |
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22 | */ |
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23 | void BSP_rtems_irq_mngt_init(void) |
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24 | { |
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25 | long *vectorTable; |
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26 | int i; |
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27 | |
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28 | /* disable all interrupts */ |
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29 | VICIntEnClr = 0xFFFFFFFF; |
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30 | |
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31 | vectorTable = (long *) VECTOR_TABLE; |
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32 | /* Initialize the vector table contents with default handler */ |
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33 | for (i=0; i<BSP_MAX_INT; i++) { |
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34 | *(vectorTable + i) = (long)(default_int_handler); |
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35 | } |
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36 | |
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37 | /* |
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38 | * Set IRQHandler |
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39 | */ |
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40 | IRQ_VECTOR_ADDR = 0xE59FF018; /* LDR PC,[PC,#0x18] instruction */ |
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41 | |
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42 | /* |
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43 | * Set FIQHandler |
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44 | */ |
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45 | FIQ_VECTOR_ADDR = 0xE59FF018; /* LDR PC,[PC,#0x18] instruction */ |
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46 | |
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47 | /* |
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48 | * We does not need the next interrupt sources in the moment, |
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49 | * therefore jump to itself. |
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50 | */ |
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51 | UNDEFINED_INSTRUCTION_VECTOR_ADDR = 0xEAFFFFFE; |
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52 | SOFTWARE_INTERRUPT_VECTOR_ADDR = 0xEAFFFFFE; |
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53 | PREFETCH_ABORT_VECTOR_ADDR = 0xEAFFFFFE; |
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54 | |
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55 | /* |
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56 | * In case we must find an ABORT error, |
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57 | * enable the next lines and set a breakpoint |
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58 | * in ABORTHandler. |
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59 | */ |
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60 | #if 1 |
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61 | DATA_ABORT_VECTOR_ADDR = 0xE59FF018; |
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62 | #endif |
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63 | |
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64 | /* |
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65 | * Init the Vectored Interrupt Controller (VIC) |
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66 | */ |
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67 | VICProtection = 0; |
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68 | VICIntSelect = 0; |
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69 | VICVectAddr = 0; |
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70 | } |
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71 | |
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