hi,
I am working on banana pi board. I am able to run the FreeRTOS in non root cell
with provided configuration. i tested UART7 interrupt and its is working fine.
i tried extended the main.c for supporting CAN interrupt. But i am getting some
hypervisor exception while accessing ITARGETSR with CAN interrupt number 58. i
am sharing the code part which i used for can interrupt enable. Please let me
know which part i did wrong.
#define CAN0_IRQ 58
static void can_irq_enable(void)
{
volatile uint8_t *gicd = gic_v2_gicd_get_address() + GICD_ITARGETSR;
int n, m, offset;
m = CAN0_IRQ;
printf("CAN gicd=%p CPUID=%d\n", gicd, (int)gicd[0]);
n = m / 4;
offset = 4*n;
offset+= m % 4;
printf("Orig GICD_ITARGETSR[%d]=%d\n",m, (int)gicd[offset]); /*--> @ this
point i am getting exception */
gicd[offset] |= gicd[0];
printf("New GICD_ITARGETSR[%d]=%d\n",m, (int)gicd[offset]);
gic_v2_irq_set_prio(CAN0_IRQ, portLOWEST_USABLE_INTERRUPT_PRIORITY);
gic_v2_irq_enable(CAN0_IRQ);
}
Exception Details
******************************
Started cell "FreeRTOS"
jailhouse@Olimex_RBEI:~/jailhouse_freeRTOS$ Unhandled HYP data abort exit at
0xf0002eb8
r0: 0x01c81000 r1: 0xf0010f5c r2: 0x00000004 r3: 0x00000943
r4: 0x00000943 r5: 0xf0010f5c r6: 0x00000000 r7: 0x00000003
r8: 0xf000d074 r9: 0xf003a000 r10: 0xf000d080 r11: 0xf000e000
r12: 0xf003b020 r13: 0xf0005b90
Physical address: 0x01c81943 ESR: 0x94000021
Stopping CPU 1 (Cell: "FreeRTOS")
I have configured GIC for Non root cell in cell configuration as below
.irqchips = {
/* GIC */ {
.address = 0x01c80000,
/* Interrupt of UART 7 belongs to the client */
.pin_bitmap = (1ULL<<(52-32)| 1ULL<<(58-32)),
},
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