/**
*
* @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
*/
static int _mvic_init(struct device *unused)
{
ARG_UNUSED(unused);
int i;
/* By default mask all interrupt lines */
for (i = 0; i < MVIC_NUM_RTES; i++) {
_mvic_rte_set(i, MVIC_IOWIN_MASK);
}
/* reset the task priority and timer initial count registers */
sys_write32(0, MVIC_TPR);
sys_write32(0, MVIC_ICR);
/* Initialize and mask the timer interrupt.
* Bits 0-3 program the interrupt line number we will use
* for the timer interrupt.
*/
__ASSERT(CONFIG_MVIC_TIMER_IRQ < 16,
"Bad irq line %d chosen for timer irq", CONFIG_MVIC_TIMER_IRQ);
sys_write32(MVIC_LVTTIMER_MASK | CONFIG_MVIC_TIMER_IRQ, MVIC_LVTTIMER);
/* discard a pending interrupt if any */
sys_write32(0, MVIC_EOI);
return 0;
}
int pinmux_initialize(struct device *port)
{
int i=0;
quark_se_pinmux_initialize_common(port, mux_config);
PIN_CONFIG(mux_config, 0, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 1, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 2, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 3, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 8, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 9, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 55, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 56, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 57, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 63, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 64, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 65, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 66, PINMUX_FUNC_B);
for (i = 0; i < PINMUX_MAX_REGISTERS; i++) {
sys_write32(mux_config[i], PINMUX_SELECT_REGISTER(board_pmux.base_address, i));
}
return DEV_OK;
}
/**
*
* @brief write to 32 bit MVIC IO APIC register
*
* @param irq INTIN number
* @param value value to be written
*
* @returns N/A
*/
static void _mvic_rte_set(unsigned int irq, u32_t value)
{
int key; /* interrupt lock level */
u32_t regsel;
__ASSERT(!(value & ~MVIC_IOWIN_SUPPORTED_BITS_MASK),
"invalid IRQ flags %" PRIx32 " for irq %d", value, irq);
regsel = compute_ioregsel(irq);
/* lock interrupts to ensure indirect addressing works "atomically" */
key = irq_lock();
sys_write32(regsel, MVIC_IOREGSEL);
sys_write32(value, MVIC_IOWIN);
irq_unlock(key);
}
void _arch_irq_disable(unsigned int irq)
{
if (irq == CONFIG_MVIC_TIMER_IRQ) {
sys_write32(sys_read32(MVIC_LVTTIMER) | MVIC_LVTTIMER_MASK,
MVIC_LVTTIMER);
} else {
_mvic_rte_update(irq, MVIC_IOWIN_MASK, MVIC_IOWIN_MASK);
}
}
/**
* @brief SPI module data pull (read) operation.
* @param dev Pointer to the device structure for the driver instance
* @return None.
*/
static void spi_k64_pull_data(struct device *dev)
{
struct spi_k64_config *info = dev->config->config_info;
struct spi_k64_data *spi_data = dev->driver_data;
uint16_t data;
#ifdef CONFIG_SPI_DEBUG
uint32_t cnt = 0; /* # of bytes pulled */
#endif
DBG("spi_k64_pull_data - ");
do { /* initial status already checked by spi_k64_isr() */
if (spi_data->rx_buf && spi_data->rx_buf_len > 0) {
data = (uint16_t)sys_read32(info->regs + SPI_K64_REG_POPR);
if (spi_data->frame_sz > CHAR_BIT) {
/* store 2nd byte with frame sizes larger than 8 bits */
*((uint16_t *)(spi_data->rx_buf)) = data;
spi_data->rx_buf += 2;
spi_data->rx_buf_len -= 2;
#ifdef CONFIG_SPI_DEBUG
cnt+=2;
#endif
} else {
*(spi_data->rx_buf) = (uint8_t)data;
spi_data->rx_buf++;
spi_data->rx_buf_len--;
#ifdef CONFIG_SPI_DEBUG
cnt++;
#endif
}
/* Clear interrupt */
sys_write32(SPI_K64_SR_RFDF, (info->regs + SPI_K64_REG_SR));
} else {
/* No buffer to store data to */
break;
}
} while (sys_read32(info->regs + SPI_K64_REG_SR) & SPI_K64_SR_RFDF);
DBG("pulled: %d\n", cnt);
}
/**
*
* @brief modify interrupt line register.
*
* @param irq INTIN number
* @param value value to be written
* @param mask of bits to be modified
*
* @returns N/A
*/
static void _mvic_rte_update(unsigned int irq, u32_t value, u32_t mask)
{
int key;
u32_t regsel, old_value, updated_value;
__ASSERT(!(value & ~MVIC_IOWIN_SUPPORTED_BITS_MASK),
"invalid IRQ flags %" PRIx32 " for irq %d", value, irq);
regsel = compute_ioregsel(irq);
key = irq_lock();
sys_write32(regsel, MVIC_IOREGSEL);
old_value = sys_read32(MVIC_IOWIN);
updated_value = (old_value & ~mask) | (value & mask);
sys_write32(updated_value, MVIC_IOWIN);
irq_unlock(key);
}
static inline int quark_se_clock_control_off(struct device *dev,
clock_control_subsys_t sub_system)
{
struct quark_se_clock_control_config *info = dev->config->config_info;
uint32_t subsys = POINTER_TO_INT(sub_system);
if (sub_system == CLOCK_CONTROL_SUBSYS_ALL) {
DBG("Disabling all clock gates on dev %p\n", dev);
sys_write32(0x00000000, info->base_address);
return DEV_OK;
}
DBG("clock gate on dev %p subsystem %u\n", dev, subsys);
return sys_test_and_clear_bit(info->base_address, subsys);
}
static void _pinmux_defaults(u32_t base)
{
u32_t mux_config[PINMUX_MAX_REGISTERS] = { 0, 0, 0, 0, 0 };
int i = 0;
#if !defined(CONFIG_SPI_1) && !defined(CONFIG_SPI_CS_GPIO)
PIN_CONFIG(mux_config, 0, PINMUX_FUNC_B);
#endif
PIN_CONFIG(mux_config, 1, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 2, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 3, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 4, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 5, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 7, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 8, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 9, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 14, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 16, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 17, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 40, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 41, PINMUX_FUNC_B);
#ifdef CONFIG_SPI_1
PIN_CONFIG(mux_config, 42, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 43, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 44, PINMUX_FUNC_B);
#ifndef CONFIG_SPI_CS_GPIO
PIN_CONFIG(mux_config, 45, PINMUX_FUNC_B);
#endif
#endif
PIN_CONFIG(mux_config, 55, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 56, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 57, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 63, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 64, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 65, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 66, PINMUX_FUNC_B);
for (i = 0; i < PINMUX_MAX_REGISTERS; i++) {
sys_write32(mux_config[i], PINMUX_SELECT_REGISTER(base, i));
}
}
static void _pinmux_defaults(u32_t base)
{
u32_t mux_config[PINMUX_MAX_REGISTERS] = { 0, 0 };
int i = 0;
PIN_CONFIG(mux_config, 0, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 3, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 4, PINMUX_FUNC_B);
PIN_CONFIG(mux_config, 6, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 7, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 12, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 13, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 14, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 15, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 16, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 17, PINMUX_FUNC_C);
PIN_CONFIG(mux_config, 18, PINMUX_FUNC_C);
for (i = 0; i < PINMUX_MAX_REGISTERS; i++) {
sys_write32(mux_config[i], PINMUX_SELECT_REGISTER(base, i));
}
}
int quark_se_ipm_controller_initialize(struct device *d)
{
struct quark_se_ipm_controller_config_info *config = d->config->config_info;
#if CONFIG_IPM_QUARK_SE_MASTER
int i;
/* Mask all mailbox interrupts, we'll enable them
* individually later. Clear out any pending messages
*/
sys_write32(0xFFFFFFFF, QUARK_SE_IPM_MASK);
for (i = 0; i < QUARK_SE_IPM_CHANNELS; ++i) {
volatile struct quark_se_ipm *ipm = QUARK_SE_IPM(i);
ipm->sts.sts = 0;
ipm->sts.irq = 0;
}
#endif
if (config->controller_init) {
return config->controller_init();
}
return 0;
}
static inline void gpio_dw_unmask_int(uint32_t mask_addr)
{
sys_write32(sys_read32(mask_addr) & INT_UNMASK_IA, mask_addr);
}
/**
* @brief Configure the SPI host controller for operating against slaves
* @param dev Pointer to the device structure for the driver instance
* @param config Pointer to the application provided configuration
*
* @return DEV_OK if successful, another DEV_* code otherwise.
*/
static int spi_k64_configure(struct device *dev, struct spi_config *config)
{
struct spi_k64_config *info = dev->config->config_info;
struct spi_k64_data *spi_data = dev->driver_data;
uint32_t flags = config->config;
uint32_t mcr; /* mode configuration attributes, for MCR */
uint32_t ctar = 0; /* clocking and timing attributes, for CTAR */
uint32_t frame_sz; /* frame size, in bits */
DBG("spi_k64_configure: dev %p (regs @ 0x%x), ", dev, info->regs);
DBG("config 0x%x, freq 0x%x",
config->config, config->max_sys_freq);
/* Disable transfer operations during configuration */
spi_k64_halt(dev);
/*
* Set the common configuration:
* Master mode, normal SPI transfers, PCS strobe disabled,
* Rx overflow data ignored, PCSx inactive low signal, Doze disabled,
* Rx/Tx FIFOs enabled.
*
* Also, keep transfers disabled.
*/
mcr = SPI_K64_MCR_MSTR | SPI_K64_MCR_HALT;
/* Set PCSx signal polarities and continuous SCK, as requested */
mcr |= (SPI_K64_MCR_PCSIS_SET(SPI_PCS_POL_GET(flags)) |
SPI_K64_MCR_CONT_SCKE_SET(SPI_CONT_SCK_GET(flags)));
sys_write32(mcr, (info->regs + SPI_K64_REG_MCR));
/* Set clocking and timing parameters */
/* SCK polarity and phase, and bit order of data */
if (flags & SPI_MODE_CPOL) {
ctar |= SPI_K64_CTAR_CPOL;
}
if (flags & SPI_MODE_CPHA) {
ctar |= SPI_K64_CTAR_CPHA;
}
if (flags & SPI_TRANSFER_MASK) {
ctar |= SPI_K64_CTAR_LSBFE;
}
/*
* Frame size is limited to 16 bits (vs. 8 bit value in struct spi_config),
* programmed as: (frame_size - 1)
*/
if ((frame_sz = SPI_WORD_SIZE_GET(flags)) > SPI_K64_WORD_SIZE_MAX) {
return DEV_INVALID_OP;
}
spi_data->frame_sz = frame_sz;
ctar |= (SPI_K64_CTAR_FRMSZ_SET(frame_sz - 1));
/* Set baud rate and signal timing parameters (delays) */
if (spi_k64_set_baud_rate(config->max_sys_freq, &ctar) == 0) {
return DEV_INVALID_OP;
}
/*
* Set signal timing parameters (delays):
* - PCS to SCK delay is set to the minimum, CTAR[PCSSCK] = CTAR[CSSCK] = 0;
* - After SCK delay is set to at least half of the baud rate period,
* (using the combination of CTAR[PASC] and CTAR[ASC]); and
* - Delay after transfer is set to the minimum, CTAR[PDT] = CTAR[DT] = 0.
*/
if (spi_k64_set_delay(DELAY_AFTER_SCK,
(NSEC_PER_SEC / 2) / config->max_sys_freq,
&ctar) == 0) {
return DEV_INVALID_OP;
}
DBG("spi_k64_configure: MCR: 0x%x CTAR0: 0x%x\n", mcr, ctar);
sys_write32(ctar, (info->regs + SPI_K64_REG_CTAR0));
/* Initialize Tx/Rx parameters */
spi_data->tx_buf = spi_data->rx_buf = NULL;
spi_data->tx_buf_len = spi_data->rx_buf_len = 0;
/* Store continuous slave/PCS signal selection mode */
spi_data->cont_pcs_sel = SPI_CONT_PCS_GET(flags);
return DEV_OK;
}
static inline void _i2c_qse_ss_memory_write(uint32_t base_addr,
uint32_t offset, uint32_t val)
{
sys_write32(val, base_addr + offset);
}
static inline void eth_write(uint32_t base_addr, uint32_t offset,
uint32_t val)
{
sys_write32(val, base_addr + offset);
}
static void dma_stm32_write(struct dma_stm32_device *ddata,
u32_t reg, u32_t val)
{
sys_write32(val, ddata->base + reg);
}
/**
* @brief Read and/or write a defined amount of data through an SPI driver
*
* @param dev Pointer to the device structure for the driver instance
* @param tx_buf Memory buffer that data should be transferred from
* @param tx_buf_len Size of the memory buffer available for reading from
* @param rx_buf Memory buffer that data should be transferred to
* @param rx_buf_len Size of the memory buffer available for writing to
*
* @return DEV_OK if successful, another DEV_* code otherwise.
*/
static int spi_k64_transceive(struct device *dev,
uint8_t *tx_buf, uint32_t tx_buf_len,
uint8_t *rx_buf, uint32_t rx_buf_len)
{
struct spi_k64_config *info = dev->config->config_info;
struct spi_k64_data *spi_data = dev->driver_data;
uint32_t int_config; /* interrupt configuration */
DBG("spi_k64_transceive: dev %p, Tx buf %p, ", dev, tx_buf);
DBG("Tx len %u, Rx buf %p, Rx len %u\n", tx_buf_len, rx_buf, rx_buf_len);
/* Check parameters */
if ((tx_buf_len && (tx_buf == NULL)) || (rx_buf_len && (rx_buf == NULL))) {
DBG("spi_k64_transceive: ERROR - NULL buffer\n");
return DEV_INVALID_OP;
}
/* Check Tx FIFO status */
if (tx_buf_len &&
((sys_read32(info->regs + SPI_K64_REG_SR) & SPI_K64_SR_TFFF) == 0)) {
DBG("spi_k64_transceive: Tx FIFO is full\n");
return DEV_USED;
}
/* Set buffers info */
spi_data->tx_buf = tx_buf;
spi_data->tx_buf_len = tx_buf_len;
spi_data->rx_buf = rx_buf;
spi_data->rx_buf_len = rx_buf_len;
/* enable transfer operations - must be done before enabling interrupts */
spi_k64_start(dev);
/*
* Enable interrupts:
* - Transmit FIFO Fill (Tx FIFO not full); and/or
* - Receive FIFO Drain (Rx FIFO not empty);
*
* Note: DMA requests are not supported.
*/
int_config = sys_read32(info->regs + SPI_K64_REG_RSER);
if (tx_buf_len) {
int_config |= SPI_K64_RSER_TFFF_RE;
}
if (rx_buf_len) {
int_config |= SPI_K64_RSER_RFDF_RE;
}
sys_write32(int_config, (info->regs + SPI_K64_REG_RSER));
/* wait for transfer to complete */
device_sync_call_wait(&spi_data->sync_info);
/* check completion status */
if (spi_data->error) {
spi_data->error = 0;
return DEV_FAIL;
}
return DEV_OK;
}
int spi_k64_init(struct device *dev)
{
struct spi_k64_config *info = dev->config->config_info;
struct spi_k64_data *data = dev->driver_data;
uint32_t mcr;
dev->driver_api = &k64_spi_api;
/* Enable module clocking */
sys_set_bit(info->clk_gate_reg, info->clk_gate_bit);
/*
* Ensure module operation is stopped and enabled before writing anything
* more to the registers.
* (Clear MCR[MDIS] and set MCR[HALT].)
*/
DBG("halt\n");
mcr = SPI_K64_MCR_HALT;
sys_write32(mcr, (info->regs + SPI_K64_REG_MCR));
while (sys_read32(info->regs + SPI_K64_REG_SR) & SPI_K64_SR_TXRXS) {
DBG("SPI Controller dev %p is running. Waiting for Halt.\n", dev);
}
/* Clear Tx and Rx FIFOs */
mcr |= (SPI_K64_MCR_CLR_RXF | SPI_K64_MCR_CLR_TXF);
DBG("fifo clr\n");
sys_write32(mcr, (info->regs + SPI_K64_REG_MCR));
/* Set master mode */
mcr = SPI_K64_MCR_MSTR | SPI_K64_MCR_HALT;
DBG("master mode\n");
sys_write32(mcr, (info->regs + SPI_K64_REG_MCR));
/* Disable SPI module interrupt generation */
DBG("irq disable\n");
sys_write32(0, (info->regs + SPI_K64_REG_RSER));
/* Clear status */
DBG("status clr\n");
sys_write32((SPI_K64_SR_RFDF | SPI_K64_SR_RFOF | SPI_K64_SR_TFUF |
SPI_K64_SR_EOQF | SPI_K64_SR_TCF),
(info->regs + SPI_K64_REG_SR));
/* Set up the synchronous call mechanism */
device_sync_call_init(&data->sync_info);
/* Configure and enable SPI module IRQs */
info->config_func();
irq_enable(info->irq);
/*
* Enable Rx overflow interrupt generation.
* Note that Tx underflow is only generated when in slave mode.
*/
DBG("rxfifo overflow enable\n");
sys_write32(SPI_K64_RSER_RFOF_RE, (info->regs + SPI_K64_REG_RSER));
DBG("K64 SPI Driver initialized on device: %p\n", dev);
/* operation remains disabled (MCR[HALT] = 1)*/
return DEV_OK;
}
/**
* @brief Complete SPI module data transfer operations.
* @param dev Pointer to the device structure for the driver instance
* @param error Error condition (0 = no error, otherwise an error occurred)
* @return None.
*/
static void spi_k64_complete(struct device *dev, uint32_t error)
{
struct spi_k64_data *spi_data = dev->driver_data;
struct spi_k64_config *info = dev->config->config_info;
uint32_t int_config; /* interrupt configuration */
if (error) {
DBG("spi_k64_complete - ERROR condition\n");
goto complete;
}
/* Check for a completed transfer */
if (spi_data->tx_buf && (spi_data->tx_buf_len == 0) && !spi_data->rx_buf) {
/* disable Tx interrupts */
int_config = sys_read32(info->regs + SPI_K64_REG_RSER);
int_config &= ~SPI_K64_RSER_TFFF_RE;
sys_write32(int_config, (info->regs + SPI_K64_REG_RSER));
} else if (spi_data->rx_buf && (spi_data->rx_buf_len == 0) &&
!spi_data->tx_buf) {
/* disable Rx interrupts */
int_config = sys_read32(info->regs + SPI_K64_REG_RSER);
int_config &= ~SPI_K64_RSER_RFDF_RE;
sys_write32(int_config, (info->regs + SPI_K64_REG_RSER));
} else if (spi_data->tx_buf && spi_data->tx_buf_len == 0 &&
spi_data->rx_buf && spi_data->rx_buf_len == 0) {
/* disable Tx, Rx interrupts */
int_config = sys_read32(info->regs + SPI_K64_REG_RSER);
int_config &= ~(SPI_K64_RSER_TFFF_RE | SPI_K64_RSER_RFDF_RE);
sys_write32(int_config, (info->regs + SPI_K64_REG_RSER));
} else {
return;
}
complete:
spi_data->tx_buf = spi_data->rx_buf = NULL;
spi_data->tx_buf_len = spi_data->rx_buf_len = 0;
/* Disable transfer operations */
spi_k64_halt(dev);
/* Save status */
spi_data->error = error;
/* Signal completion */
device_sync_call_complete(&spi_data->sync_info);
}
/**
* @brief SPI module data push (write) operation.
* @param dev Pointer to the device structure for the driver instance
* @return None.
*/
static void spi_k64_push_data(struct device *dev)
{
struct spi_k64_config *info = dev->config->config_info;
struct spi_k64_data *spi_data = dev->driver_data;
uint32_t data;
#ifdef CONFIG_SPI_DEBUG
uint32_t cnt = 0; /* # of bytes pushed */
#endif
DBG("spi_k64_push_data - ");
do { /* initial status already checked by spi_k64_isr() */
if (spi_data->tx_buf && (spi_data->tx_buf_len > 0)) {
if (spi_data->frame_sz > CHAR_BIT) {
/* get 2nd byte with frame sizes larger than 8 bits */
data = (uint32_t)(*(uint16_t *)(spi_data->tx_buf));
spi_data->tx_buf += 2;
spi_data->tx_buf_len -= 2;
#ifdef CONFIG_SPI_DEBUG
cnt+=2;
#endif
} else {
data = (uint32_t)(*(spi_data->tx_buf));
spi_data->tx_buf++;
spi_data->tx_buf_len--;
#ifdef CONFIG_SPI_DEBUG
cnt++;
#endif
}
/* Write data to the selected slave */
if (spi_data->cont_pcs_sel && (spi_data->tx_buf_len == 0)) {
/* clear continuous PCS enabling in the last frame */
sys_write32((data | SPI_K64_PUSHR_PCS_SET(spi_data->pcs)),
(info->regs + SPI_K64_REG_PUSHR));
} else {
sys_write32((data | SPI_K64_PUSHR_PCS_SET(spi_data->pcs) |
SPI_K64_PUSHR_CONT_SET(spi_data->cont_pcs_sel)),
(info->regs + SPI_K64_REG_PUSHR));
}
/* Clear interrupt */
sys_write32(SPI_K64_SR_TFFF, (info->regs + SPI_K64_REG_SR));
} else {
/* Nothing more to push */
break;
}
} while (sys_read32(info->regs + SPI_K64_REG_SR) & SPI_K64_SR_TFFF);
DBG("pushed: %d\n", cnt);
}
static inline void gpio_dw_unmask_int(uint32_t mask_addr)
{
sys_write32(sys_read32(mask_addr) & INT_ENABLE_ARC, mask_addr);
}
static int _loapic_init(struct device *unused)
{
ARG_UNUSED(unused);
s32_t loApicMaxLvt; /* local APIC Max LVT */
/* enable the Local APIC */
sys_write32(sys_read32(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_SVR)
| LOAPIC_ENABLE, CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_SVR);
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 */
#if CONFIG_EOI_FORWARDING_BUG
_lakemont_eoi();
#else
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_EOI) = 0;
#endif
return 0;
}