/**
*
* @brief initialize the MVIC IO APIC and local APIC register sets.
*
* This routine initializes the Quark D2000 Interrupt Controller (MVIC).
* This routine replaces the standard Local APIC / IO APIC init routines.
*
* @returns: N/A
*/
int _mvic_init(struct device *unused)
{
ARG_UNUSED(unused);
int32_t ix; /* Interrupt line register index */
uint32_t rteValue; /* value to copy into interrupt line register */
/*
* The platform must define the CONFIG_IOAPIC_NUM_RTES macro to indicate the number
* of redirection table entries supported by the IOAPIC on the board.
*
* By default mask all interrupt lines and set default sensitivity to edge.
*
*/
rteValue = IOAPIC_EDGE | IOAPIC_INT_MASK;
for (ix = 0; ix < CONFIG_IOAPIC_NUM_RTES; ix++) {
_mvic_rte_set(ix, rteValue);
}
/* enable the MVIC Local APIC */
_loapic_enable();
/* reset the TPR, and TIMER_ICR */
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_TPR) = (int)0x0;
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_TIMER_ICR) = (int)0x0;
/* program Local Vector Table for the Virtual Wire Mode */
/* lock the MVIC timer interrupt, set which IRQ line should be
* used for timer interrupts (this is unlike LOAPIC where the
* vector is programmed instead).
*/
__ASSERT_NO_MSG(CONFIG_LOAPIC_TIMER_IRQ <= 15);
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_TIMER) =
LOAPIC_LVT_MASKED | CONFIG_LOAPIC_TIMER_IRQ;
/* discard a pending interrupt if any */
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_EOI) = 0;
return 0;
}
void _mvic_init(void)
{
int32_t ix; /* Interrupt line register index */
uint32_t rteValue; /* value to copy into interrupt line register */
/*
* The BSP must define the IOAPIC_NUM_RTES macro to indicate the number
* of redirection table entries supported by the IOAPIC on the board.
*
* By default mask all interrupt lines and set default sensitivity to edge.
*
*/
rteValue = IOAPIC_EDGE | IOAPIC_INT_MASK;
for (ix = 0; ix < IOAPIC_NUM_RTES; ix++) {
MvicRteSet(ix, rteValue);
}
/* enable the MVIC Local APIC */
_loapic_enable();
/* reset the TPR, and TIMER_ICR */
*(volatile int *)(LOAPIC_BASE_ADRS + LOAPIC_TPR) = (int)0x0;
*(volatile int *)(LOAPIC_BASE_ADRS + LOAPIC_TIMER_ICR) = (int)0x0;
/* program Local Vector Table for the Virtual Wire Mode */
/* lock the MVIC timer interrupt */
*(volatile int *)(LOAPIC_BASE_ADRS + LOAPIC_TIMER) = LOAPIC_LVT_MASKED;
/* discard a pending interrupt if any */
*(volatile int *)(LOAPIC_BASE_ADRS + LOAPIC_EOI) = 0;
}
int _loapic_init(struct device *unused)
{
ARG_UNUSED(unused);
int32_t loApicMaxLvt; /* local APIC Max LVT */
/* enable the Local APIC */
_loapic_enable();
loApicMaxLvt = (*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_VER) &
LOAPIC_MAXLVT_MASK) >> 16;
/* reset the DFR, TPR, TIMER_CONFIG, and TIMER_ICR */
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_DFR) =
(int)0xffffffff;
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_TPR) = (int)0x0;
*(volatile int *) (CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_TIMER_CONFIG) =
(int)0x0;
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_TIMER_ICR) = (int)0x0;
/* program Local Vector Table for the Virtual Wire Mode */
/* set LINT0: extInt, high-polarity, edge-trigger, not-masked */
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_LINT0) =
(*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_LINT0) &
~(LOAPIC_MODE | LOAPIC_LOW | LOAPIC_LEVEL | LOAPIC_LVT_MASKED)) |
(LOAPIC_EXT | LOAPIC_HIGH | LOAPIC_EDGE);
/* set LINT1: NMI, high-polarity, edge-trigger, not-masked */
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_LINT1) =
(*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_LINT1) &
~(LOAPIC_MODE | LOAPIC_LOW | LOAPIC_LEVEL | LOAPIC_LVT_MASKED)) |
(LOAPIC_NMI | LOAPIC_HIGH | LOAPIC_EDGE);
/* lock the Local APIC interrupts */
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_TIMER) =
LOAPIC_LVT_MASKED;
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_ERROR) =
LOAPIC_LVT_MASKED;
if (loApicMaxLvt >= LOAPIC_LVT_P6)
*(volatile int *) (CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_PMC) =
LOAPIC_LVT_MASKED;
if (loApicMaxLvt >= LOAPIC_LVT_PENTIUM4)
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_THERMAL) =
LOAPIC_LVT_MASKED;
#if CONFIG_LOAPIC_SPURIOUS_VECTOR
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_SVR) =
(*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_SVR) & 0xFFFFFF00)
| (LOAPIC_SPURIOUS_VECTOR_ID & 0xFF);
#endif
/* discard a pending interrupt if any */
_loapic_eoi();
return 0;
}
