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