//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//

// Internal AMBA UART register mappings.
//
typedef struct _AMBA_UART_INFO_
{
    volatile PUCHAR pUART_DR;		// Data read or written from interface.
    volatile PUCHAR pUART_RSR;		// Receive status (r).
    volatile PUCHAR pUART_ECR;		// Error clear (w).
    volatile PUCHAR pUART_LCR_H;	// Line control registery (high byte).
    volatile PUCHAR pUART_LCR_M;	// Line control registery (middle byte).
    volatile PUCHAR pUART_LCR_L;	// Line control registery (low byte).
    volatile PUCHAR pUART_CR;		// Control register.
    volatile PUCHAR pUART_FR;		// Flag register (ro).
    volatile PUCHAR pUART_IIR;		// Interrupt ID (r).
    volatile PUCHAR pUART_ICR;		// Interrupt clear (w).
    volatile PUCHAR pUART_ILPR;		// IrDA low-power counter.
    volatile PUCHAR pSC_BASE;           // System Controller Base.
    volatile PULONG pSC_MCR;  

    UCHAR    RSR;
    UCHAR    LCR_H;
    UCHAR    LCR_M;
    UCHAR    LCR_L;
    UCHAR    CR;
    UCHAR    FR;
    UCHAR    IIR;

} AMBA_UART_INFO, *PAMBA_UART_INFO;


/* -------------------------------------------------------------------------------
 *  From AMBA UART (PL010) Block Specification (ARM-0001-CUST-DSPC-A03)
 * -------------------------------------------------------------------------------
 *  UART Register Offsets.
 *  
 */
#define AMBA_UARTDR                     0x00     /*  Data read or written from the interface. */
#define AMBA_UARTRSR                    0x04     /*  Receive status register (Read). */
#define AMBA_UARTECR                    0x04     /*  Error clear register (Write). */
#define AMBA_UARTLCR_H                  0x08     /*  Line control register, high byte. */
#define AMBA_UARTLCR_M                  0x0C     /*  Line control register, middle byte. */
#define AMBA_UARTLCR_L                  0x10     /*  Line control register, low byte. */
#define AMBA_UARTCR                     0x14     /*  Control register. */
#define AMBA_UARTFR                     0x18     /*  Flag register (Read only). */
#define AMBA_UARTIIR                    0x1C     /*  Interrupt indentification register (Read). */
#define AMBA_UARTICR                    0x1C     /*  Interrupt clear register (Write). */
#define AMBA_UARTILPR                   0x20     /*  IrDA low power counter register. */

#define AMBA_UARTRSR_OE                 0x08
#define AMBA_UARTRSR_BE                 0x04
#define AMBA_UARTRSR_PE                 0x02
#define AMBA_UARTRSR_FE                 0x01

#define AMBA_UARTFR_TXFE                0x80
#define AMBA_UARTFR_RXFF                0x40
#define AMBA_UARTFR_TXFF                0x20
#define AMBA_UARTFR_RXFE                0x10
#define AMBA_UARTFR_BUSY                0x08
#define AMBA_UARTFR_TMSK                (AMBA_UARTFR_TXFF + AMBA_UARTFR_BUSY)
#define AMBA_UARTFR_DCD			        0x04
#define AMBA_UARTFR_DSR                 0x02
#define AMBA_UARTFR_CTS                 0x01
 
#define AMBA_UARTCR_RTIE                0x40
#define AMBA_UARTCR_TIE                 0x20
#define AMBA_UARTCR_RIE                 0x10
#define AMBA_UARTCR_MSIE                0x08
#define AMBA_UARTCR_IIRLP               0x04
#define AMBA_UARTCR_SIREN               0x02
#define AMBA_UARTCR_UARTEN              0x01
 
#define AMBA_UARTLCR_H_WLEN_8           0x60
#define AMBA_UARTLCR_H_WLEN_7           0x40
#define AMBA_UARTLCR_H_WLEN_6           0x20
#define AMBA_UARTLCR_H_WLEN_5           0x00
#define AMBA_UARTLCR_H_FEN              0x10
#define AMBA_UARTLCR_H_STP2             0x08
#define AMBA_UARTLCR_H_EPS              0x04
#define AMBA_UARTLCR_H_PEN              0x02
#define AMBA_UARTLCR_H_BRK              0x01

#define AMBA_UARTIIR_RTIS               0x08
#define AMBA_UARTIIR_TIS                0x04
#define AMBA_UARTIIR_RIS                0x02
#define AMBA_UARTIIR_MIS                0x01
#define AMBA_UARTIIR_MASK               0x0F

#define AMBA_UART_BSIZE_MASK		0x9F
#define AMBA_UART_PARITY_MASK		0xF9
#define AMBA_UART_SBIT_MASK		0xF7