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/**
 * @file
 *
 * @ingroup raspberrypi_reg
 *
 * @brief Register definitions.
 */

/*
 * Copyright (c) 2013 Alan Cudmore.
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *
 *  http://www.rtems.org/license/LICENSE
 *
 */

#ifndef LIBBSP_ARM_RASPBERRYPI_RASPBERRYPI_H
#define LIBBSP_ARM_RASPBERRYPI_RASPBERRYPI_H

#include <bspopts.h>
#include <stdint.h>
#include <bsp/utility.h>

/**
 * @defgroup raspberrypi_reg Register Definitions
 *
 * @ingroup arm_raspberrypi
 *
 * @brief Register Definitions
 *
 * @{
 */

/**
 * @name Register Macros
 *
 * @{
 */

#define BCM2835_REG(x)           (*(volatile uint32_t *)(x))
#define BCM2835_BIT(n)           (1 << (n))

/** @} */

/**
 * @name Peripheral Base Register Address
 *
 * @{
 */

#if (BSP_IS_RPI2 == 1)
   #define RPI_PERIPHERAL_BASE      0x3F000000
#else
   #define RPI_PERIPHERAL_BASE      0x20000000
#endif

#define RPI_PERIPHERAL_SIZE         0x01000000

/**
 * @name Internal ARM Timer Registers
 *
 * @{
 */

#define BCM2835_CLOCK_FREQ       250000000

#define BCM2835_TIMER_BASE       (RPI_PERIPHERAL_BASE + 0xB400)

#define BCM2835_TIMER_LOD        (BCM2835_TIMER_BASE+0x00)
#define BCM2835_TIMER_VAL        (BCM2835_TIMER_BASE+0x04)
#define BCM2835_TIMER_CTL        (BCM2835_TIMER_BASE+0x08)
#define BCM2835_TIMER_CLI        (BCM2835_TIMER_BASE+0x0C)
#define BCM2835_TIMER_RIS        (BCM2835_TIMER_BASE+0x10)
#define BCM2835_TIMER_MIS        (BCM2835_TIMER_BASE+0x14)
#define BCM2835_TIMER_RLD        (BCM2835_TIMER_BASE+0x18)
#define BCM2835_TIMER_DIV        (BCM2835_TIMER_BASE+0x1C)
#define BCM2835_TIMER_CNT        (BCM2835_TIMER_BASE+0x20)

#define BCM2835_TIMER_PRESCALE    0xF9

/** @} */

/**
 * @name GPIO Registers
 *
 * @{
 */

#define BCM2835_GPIO_REGS_BASE   (RPI_PERIPHERAL_BASE + 0x200000)

#define BCM2835_GPIO_GPFSEL1     (BCM2835_GPIO_REGS_BASE+0x04)
#define BCM2835_GPIO_GPSET0      (BCM2835_GPIO_REGS_BASE+0x1C)
#define BCM2835_GPIO_GPCLR0      (BCM2835_GPIO_REGS_BASE+0x28)
#define BCM2835_GPIO_GPPUD       (BCM2835_GPIO_REGS_BASE+0x94)
#define BCM2835_GPIO_GPPUDCLK0   (BCM2835_GPIO_REGS_BASE+0x98)

/** @} */

/**
 * @name AUX Registers
 *
 * @{
 */

#define BCM2835_AUX_BASE         (RPI_PERIPHERAL_BASE + 0x215000)

#define AUX_ENABLES              (BCM2835_AUX_BASE+0x04)
#define AUX_MU_IO_REG            (BCM2835_AUX_BASE+0x40)
#define AUX_MU_IER_REG           (BCM2835_AUX_BASE+0x44)
#define AUX_MU_IIR_REG           (BCM2835_AUX_BASE+0x48)
#define AUX_MU_LCR_REG           (BCM2835_AUX_BASE+0x4C)
#define AUX_MU_MCR_REG           (BCM2835_AUX_BASE+0x50)
#define AUX_MU_LSR_REG           (BCM2835_AUX_BASE+0x54)
#define AUX_MU_MSR_REG           (BCM2835_AUX_BASE+0x58)
#define AUX_MU_SCRATCH           (BCM2835_AUX_BASE+0x5C)
#define AUX_MU_CNTL_REG          (BCM2835_AUX_BASE+0x60)
#define AUX_MU_STAT_REG          (BCM2835_AUX_BASE+0x64)
#define AUX_MU_BAUD_REG          (BCM2835_AUX_BASE+0x68)

/** @} */


/**
 * @name UART 0 (PL011) Registers
 *
 * @{
 */


#define BCM2835_UART0_BASE       (RPI_PERIPHERAL_BASE + 0x201000)

#define BCM2835_UART0_DR         (BCM2835_UART0_BASE+0x00)
#define BCM2835_UART0_RSRECR     (BCM2835_UART0_BASE+0x04)
#define BCM2835_UART0_FR         (BCM2835_UART0_BASE+0x18)
#define BCM2835_UART0_ILPR       (BCM2835_UART0_BASE+0x20)
#define BCM2835_UART0_IBRD       (BCM2835_UART0_BASE+0x24)
#define BCM2835_UART0_FBRD       (BCM2835_UART0_BASE+0x28)
#define BCM2835_UART0_LCRH       (BCM2835_UART0_BASE+0x2C)
#define BCM2835_UART0_CR         (BCM2835_UART0_BASE+0x30)
#define BCM2835_UART0_IFLS       (BCM2835_UART0_BASE+0x34)
#define BCM2835_UART0_IMSC       (BCM2835_UART0_BASE+0x38)
#define BCM2835_UART0_RIS        (BCM2835_UART0_BASE+0x3C)
#define BCM2835_UART0_MIS        (BCM2835_UART0_BASE+0x40)
#define BCM2835_UART0_ICR        (BCM2835_UART0_BASE+0x44)
#define BCM2835_UART0_DMACR      (BCM2835_UART0_BASE+0x48)
#define BCM2835_UART0_ITCR       (BCM2835_UART0_BASE+0x80)
#define BCM2835_UART0_ITIP       (BCM2835_UART0_BASE+0x84)
#define BCM2835_UART0_ITOP       (BCM2835_UART0_BASE+0x88)
#define BCM2835_UART0_TDR        (BCM2835_UART0_BASE+0x8C)

#define BCM2835_UART0_MIS_RX    0x10
#define BCM2835_UART0_MIS_TX    0x20
#define BCM2835_UART0_IMSC_RX   0x10
#define BCM2835_UART0_IMSC_TX   0x20
#define BCM2835_UART0_FR_RXFE   0x10
#define BCM2835_UART0_FR_TXFF   0x20
#define BCM2835_UART0_ICR_RX    0x10
#define BCM2835_UART0_ICR_TX    0x20


/** @} */


/**
 * @name IRQ Registers
 *
 * @{
 */

#define BCM2835_BASE_INTC         (RPI_PERIPHERAL_BASE + 0xB200)

#define BCM2835_IRQ_BASIC         (BCM2835_BASE_INTC + 0x00)
#define BCM2835_IRQ_PENDING1      (BCM2835_BASE_INTC + 0x04)
#define BCM2835_IRQ_PENDING2      (BCM2835_BASE_INTC + 0x08)
#define BCM2835_IRQ_FIQ_CTRL      (BCM2835_BASE_INTC + 0x0C)
#define BCM2835_IRQ_ENABLE1       (BCM2835_BASE_INTC + 0x10)
#define BCM2835_IRQ_ENABLE2       (BCM2835_BASE_INTC + 0x14)
#define BCM2835_IRQ_ENABLE_BASIC  (BCM2835_BASE_INTC + 0x18)
#define BCM2835_IRQ_DISABLE1      (BCM2835_BASE_INTC + 0x1C)
#define BCM2835_IRQ_DISABLE2      (BCM2835_BASE_INTC + 0x20)
#define BCM2835_IRQ_DISABLE_BASIC (BCM2835_BASE_INTC + 0x24)

/** @} */


/**
 * @name GPU Timer Registers
 *
 * @{
 */

/**
 * NOTE: The GPU uses Compare registers 0 and 2 for
 *       it's own RTOS. 1 and 3 are available for use in
 *       RTEMS.
 */
#define BCM2835_GPU_TIMER_BASE    (RPI_PERIPHERAL_BASE + 0x3000)

#define BCM2835_GPU_TIMER_CS      (BCM2835_TIMER_BASE+0x00)
#define BCM2835_GPU_TIMER_CLO     (BCM2835_TIMER_BASE+0x04)
#define BCM2835_GPU_TIMER_CHI     (BCM2835_TIMER_BASE+0x08)
#define BCM2835_GPU_TIMER_C0      (BCM2835_TIMER_BASE+0x0C)
#define BCM2835_GPU_TIMER_C1      (BCM2835_TIMER_BASE+0x10)
#define BCM2835_GPU_TIMER_C2      (BCM2835_TIMER_BASE+0x14)
#define BCM2835_GPU_TIMER_C3      (BCM2835_TIMER_BASE+0x18)

/** @} */


/** @} */

#endif /* LIBBSP_ARM_RASPBERRYPI_RASPBERRYPI_H */