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/* mc_ssram.c - Memory Controller testbench SSRAM test

   Copyright (C) 2001 Ivan Guzvinec

   Copyright (C) 2010 Embecosm Limited

   Contributor Ivan Guzvinec <ivang@opencores.org>

   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

   This file is part of OpenRISC 1000 Architectural Simulator.

   This program is free software; 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 MERCHANTABILITY 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.  If not, see <http:  www.gnu.org/licenses/>.  */

/* ----------------------------------------------------------------------------

   This code is commented throughout for use with Doxygen.

   --------------------------------------------------------------------------*/

#include "support.h"

#include "mc-common.h"

#include "mc-ssram.h"

#include "config.h"

#include "mc-defines.h"

#include "gpio.h"

#include "fields.h"

typedef volatile unsigned long *REGISTER;

REGISTER mc_poc        = (unsigned long*)(MC_BASE + MC_POC);

REGISTER mc_csr        = (unsigned long*)(MC_BASE + MC_CSR);

REGISTER mc_ba_mask    = (unsigned long*)(MC_BASE + MC_BA_MASK);

REGISTER rgpio_out     = (unsigned long*)(GPIO_BASE + RGPIO_OUT);

REGISTER rgpio_in      = (unsigned long*)(GPIO_BASE + RGPIO_IN);

unsigned long lpoc;

unsigned char mc_cs;

unsigned long set_config()

{

    REGISTER mc_csc;

    unsigned char ch;

    lpoc = *mc_poc;

    for (ch=0; ch<8; ch++) {

        if (MC_SSRAM_CSMASK && (0x01 << ch) ) {

            mc_csc = (unsigned long*)(MC_BASE + MC_CSC(ch));

            SET_FIELD(*mc_csc, MC_CSC, SEL, mc_ssram_cs[ch].M);

            SET_FLAG(*mc_csc, MC_CSC, EN);

            printf ("Channel Config %d - CSC = 0x%08lX\n", ch, *mc_csc);

        }

    }

    return 0;

}

unsigned long get_config()

{

  REGISTER mc_csc;

  REGISTER mc_tms;

  unsigned char ch;

  mc_cs = 0;

  for (ch=0; ch<8; ch++) {

    mc_csc = (unsigned long*)(MC_BASE + MC_CSC(ch));

    mc_tms = (unsigned long*)(MC_BASE + MC_TMS(ch));

    if ( (GET_FIELD(*mc_csc, MC_CSC, MEMTYPE) == 1) &&

         (TEST_FLAG(*mc_csc, MC_CSC, EN) == 1     ) ) {

      mc_ssram_cs[ch].M  = GET_FIELD(*mc_csc, MC_CSC, SEL);

      mc_cs |= (1 << ch);

      printf("get_config(%d) : M=0x%0lx\n", ch,

             mc_ssram_cs[ch].M);

    }

  }

  printf("get_config() : cs=0x%0x\n", mc_cs);

  return 0;

}

int main()

{

    unsigned long ret;

    unsigned char ch;

    unsigned long test;

    unsigned long gpio_pat = 0;

    unsigned long nAddress;

    unsigned long nMemSize;

    unsigned long mc_sel;

    REGISTER mc_tms;

    REGISTER mc_csc;

    *rgpio_out = 0xFFFFFFFF;

#ifdef MC_READ_CONF

    if (get_config()) {

      printf("Error reading MC configuration\n");

      report(0x000000001);

      return(1);

    }

#else

    mc_cs = MC_SSRAM_CSMASK;

#endif

    *rgpio_out = 0;

    for (ch=0; ch<8; ch++) {

        if (mc_cs & (0x01 << ch) ) {

            printf ("--- Begin Test on CS%d ---\n", ch);

            mc_csc = (unsigned long*)(MC_BASE + MC_CSC(ch));

            mc_tms = (unsigned long*)(MC_BASE + MC_TMS(ch));

            mc_sel = GET_FIELD(*mc_csc, MC_CSC, SEL);

            printf ("CS configuration : CSC - 0x%08lX, TMS - 0x%08lXu\n",

                    *mc_csc, *mc_tms);

            for (test=0; test<4; test++) {

                /* configure MC*/

                CLEAR_FLAG(*mc_csc, MC_CSC, PEN); /* no parity */

                CLEAR_FLAG(*mc_csc, MC_CSC, BAS); /* bank after column */

                CLEAR_FLAG(*mc_csc, MC_CSC, WP);  /* write enable */

                switch (test) {

                case 0:

                    if ((MC_SSRAM_TESTS & MC_SSRAM_TEST0) != MC_SSRAM_TEST0)

                        continue;

                    break;

                case 1:

                    if ((MC_SSRAM_TESTS & MC_SSRAM_TEST1) != MC_SSRAM_TEST1)

                        continue;

                    SET_FLAG(*mc_csc, MC_CSC, PEN); /* parity */

                    break;

                case 2:

                    if ((MC_SSRAM_TESTS & MC_SSRAM_TEST2) != MC_SSRAM_TEST2)

                        continue;

                    SET_FLAG(*mc_csc, MC_CSC, BAS); /* bank after row */

                    break;

                case 3:

                    if ((MC_SSRAM_TESTS & MC_SSRAM_TEST3) != MC_SSRAM_TEST3)

                        continue;

                    SET_FLAG(*mc_csc, MC_CSC, WP);  /* RO */

                    break;

                } /*switch test*/

                printf ("Begin TEST %lu : CSC - 0x%08lX, TMS - 0x%08lX\n", test, *mc_csc, *mc_tms);

                nAddress = mc_sel << 21;

                nAddress |= MC_MEM_BASE;

                nMemSize = ( ((*mc_ba_mask && 0x000000FF) + 1) << 21);

                gpio_pat ^= 0x00000008;

                *rgpio_out = gpio_pat;

                ret = mc_test_row(nAddress, nAddress + nMemSize, MC_SSRAM_FLAGS);

                printf("\trow tested: nAddress = 0x%08lX, ret = 0x%08lX\n", nAddress, ret);

                if (ret) {

                    gpio_pat ^= 0x00000080;

                    *rgpio_out = gpio_pat;

                    report(ret);

                    return ret;

                }

            } /*for test*/

        } /*if*/

    } /*for CS*/

    printf("--- End SSRAM tests ---\n");

    report(0xDEADDEAD);

    gpio_pat ^= 0x00000020;

    *rgpio_out = gpio_pat;

    return 0;

} /* main */