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////////////////////////////////////////////////////////////////////////////////

//

// Filename:    regdefs.h

//

// Project:     CMod S6 System on a Chip, ZipCPU demonstration project

//

// Purpose:     This file defines C constants which can be used when

//              communicating with the FPGA device from the PC host.

//

// Creator:     Dan Gisselquist, Ph.D.

//              Gisselquist Technology, LLC

//

////////////////////////////////////////////////////////////////////////////////

//

// Copyright (C) 2015-2017, Gisselquist Technology, LLC

//

// This program is free software (firmware): you can redistribute it and/or

// modify it under the terms of  the GNU General Public License as published

// by the Free Software Foundation, either version 3 of the License, or (at

// your option) any later version.

//

// This program is distributed in the hope that it will be useful, but WITHOUT

// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with this program.  (It's in the $(ROOT)/doc directory, run make with no

// target there if the PDF file isn't present.)  If not, see

// <http://www.gnu.org/licenses/> for a copy.

//

// License:     GPL, v3, as defined and found on www.gnu.org,

//              http://www.gnu.org/licenses/gpl.html

//

//

////////////////////////////////////////////////////////////////////////////////

//

//

#ifndef REGDEFS_H

#define REGDEFS_H

#define R_ICONTROL      0x00000400

#define R_BUSERR        0x00000404

#define R_ITIMERA       0x00000408

#define R_ITIMERB       0x0000040c

#define R_PWM           0x00000410

#define R_SPIO          0x00000414

#define R_GPIO          0x00000418

#define R_UART          0x0000041c

#define R_VERSION       0x00000420

// WB Scope registers

#define R_SCOPE         0x00000800

#define R_SCOPED        0x00000804

//

// And because the flash driver needs these constants defined ...

#define R_QSPI_EREG     0x00000c00

#define R_QSPI_CREG     0x00000c04

#define R_QSPI_SREG     0x00000c08

#define R_QSPI_IDREG    0x00000c0c

//

// RAM memory space

#define LGMEMSZ         14

#define RAMBASE         (1<<LGMEMSZ)

#define MEMWORDS        (1<<(LGMEMSZ-1))

#define RAMLEN          (1<<LGMEMSZ)

// Flash memory space

#define LGFLASHSZ       24              // Log_2 of the number of bytes in flash

#define SPIFLASH        (1<<LGFLASHSZ)

#define FLASHWORDS      (1<<(LGFLASHSZ-2))

#define FLASHLEN        (1<<LGFLASHSZ)

#define CONFIG_ADDRESS    SPIFLASH // Main Xilinx configuration (ZipCPU)

#define ALTCONFIG_ADDRESS (SPIFLASH+0x100000) // Alt Xilinx config (Dbg)

#define RESET_ADDRESS     (SPIFLASH+0x200000) // ZipCPU Reset address

// Interrupt control constants

#define GIE             0x80000000      // Enable all interrupts

#define SCOPEN          0x80040004      // Enable WBSCOPE interrupts

#define ISPIF_EN        0x88000800      // Enable SPI Flash interrupts

#define ISPIF_DIS       0x08000000      // Disable SPI Flash interrupts

#define ISPIF_CLR       0x08000800      // Clear pending SPI Flash interrupt

// Flash control constants

#define ERASEFLAG       0x80000000

#define DISABLEWP       0x10000000

#define ENABLEWP        0x00000000

// Sectors are defined as 64 kB (16 kW)

#define SZPAGEB         256

#define PGLENB          256

#define SZPAGEW         64

#define PGLENW          64

#define NPAGES          256     // 64 kB sectors / 256 bytes is ...

#define SECTORSZB       (NPAGES * SZPAGEB)      // In bytes, not words!!

#define SECTORSZW       (NPAGES * SZPAGEW)      // In words

#define NSECTORS        (FLASHLEN/SECTORSZB)    // 256 sectors

#define SECTOROF(A)     ((A) & (-1<<16))

#define PAGEOF(A)       ((A) & (-1<<8))

// Scop definition/sequences

#define SCOPE_NO_RESET  0x80000000

#define SCOPE_TRIGGER   (0x08000000|SCOPE_NO_RESET)

#define SCOPE_MANUAL    SCOPE_TRIGGER

#define SCOPE_DISABLE   (0x04000000)

typedef struct {

        unsigned        m_addr;

        const char      *m_name;

} REGNAME;

extern  const   REGNAME *bregs;

extern  const   int     NREGS;

// #define      NREGS   (sizeof(bregs)/sizeof(bregs[0]))

extern  unsigned        addrdecode(const char *v);

extern  const   char *addrname(const unsigned v);

// #include "ttybus.h"

// #include "portbus.h"

// #include "deppbus.h"

// typedef      DEPPBUS FPGA;

#include "ttybus.h"

typedef TTYBUS  FPGA;

#endif