/* loop-init.c. Or1ksim simple C loop program which initializes data.
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/* loop-init.c. Or1ksim simple C loop program which initializes data.
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Copyright (C) 1999-2006 OpenCores
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Copyright (C) 1999-2006 OpenCores
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Copyright (C) 2010 Embecosm Limited
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Copyright (C) 2010 Embecosm Limited
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Contributors various OpenCores participants
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Contributors various OpenCores participants
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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more details.
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You should have received a copy of the GNU General Public License along
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http: www.gnu.org/licenses/>. */
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with this program. If not, see <http: www.gnu.org/licenses/>. */
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/* ----------------------------------------------------------------------------
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/* ----------------------------------------------------------------------------
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This code is commented throughout for use with Doxygen.
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This code is commented throughout for use with Doxygen.
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--------------------------------------------------------------------------*/
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--------------------------------------------------------------------------*/
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/* A program which initializes memory and SPR, then just loops. Used in
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/* A program which initializes memory and SPR, then just loops. Used in
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testing libor1ksim JTAG read functionality. */
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testing libor1ksim JTAG read functionality. */
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#include "support.h"
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#include "support.h"
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#include "spr-defs.h"
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#include "spr-defs.h"
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int
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int
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main ()
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main ()
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{
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{
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unsigned long int r;
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unsigned long int r;
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int i;
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int i;
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/* Set the SR to have SUMRA bit set, so that we can access certain regs in
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/* Set the SR to have SUMRA bit set, so that we can access certain regs in
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user mode. */
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user mode. */
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r = mfspr (SPR_SR);
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r = mfspr (SPR_SR);
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mtspr (SPR_SR, r | SPR_SR_SUMRA);
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mtspr (SPR_SR, r | SPR_SR_SUMRA);
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/* Set the MACLO and MACHI regs */
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/* Set the MACLO and MACHI regs */
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mtspr (SPR_MACLO, 0xdeadbeef);
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mtspr (SPR_MACLO, 0xdeadbeef);
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mtspr (SPR_MACHI, 0xcafebabe);
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mtspr (SPR_MACHI, 0xcafebabe);
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/* Set main memory starting at 0x100000. Set at later intervals 2^16 bytes
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/* Set main memory starting at 0x100000. Set at later intervals 2^16 bytes
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further on as well. */
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further on as well. */
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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unsigned char *block0 = (unsigned char *) (0x100000 + i);
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unsigned char *block0 = (unsigned char *) (0x100000 + i);
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unsigned char *block1 = (unsigned char *) (0x110000 + i);
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unsigned char *block1 = (unsigned char *) (0x110000 + i);
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unsigned char *block2 = (unsigned char *) (0x120000 + i);
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unsigned char *block2 = (unsigned char *) (0x120000 + i);
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*block0 = 16 + i;
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*block0 = 16 + i;
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*block1 = 32 + i;
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*block1 = 32 + i;
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*block2 = 48 + i;
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*block2 = 48 + i;
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}
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}
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/* Set the top of each memory block and the bottom of the second memory
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/* Set the top of each memory block and the bottom of the second memory
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block to a defined sequence. */
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block to a defined sequence. */
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unsigned char *mem1top = (unsigned char *) (0x001ffff8);
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unsigned char *mem1top = (unsigned char *) (0x001ffff8);
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unsigned char *mem2bot = (unsigned char *) (0xffe00000);
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unsigned char *mem2bot = (unsigned char *) (0xffe00000);
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unsigned char *mem2top = (unsigned char *) (0xfffffff8);
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unsigned char *mem2top = (unsigned char *) (0xfffffff8);
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mem1top[0] = 0xde;
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mem1top[0] = 0xde;
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mem1top[1] = 0xad;
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mem1top[1] = 0xad;
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mem1top[2] = 0xbe;
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mem1top[2] = 0xbe;
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mem1top[3] = 0xef;
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mem1top[3] = 0xef;
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mem1top[4] = 0xca;
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mem1top[4] = 0xca;
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mem1top[5] = 0xfe;
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mem1top[5] = 0xfe;
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mem1top[6] = 0xba;
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mem1top[6] = 0xba;
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mem1top[7] = 0xbe;
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mem1top[7] = 0xbe;
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mem2bot[0] = 0xde;
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mem2bot[0] = 0xde;
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mem2bot[1] = 0xad;
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mem2bot[1] = 0xad;
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mem2bot[2] = 0xbe;
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mem2bot[2] = 0xbe;
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mem2bot[3] = 0xef;
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mem2bot[3] = 0xef;
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mem2bot[4] = 0xca;
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mem2bot[4] = 0xca;
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mem2bot[5] = 0xfe;
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mem2bot[5] = 0xfe;
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mem2bot[6] = 0xba;
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mem2bot[6] = 0xba;
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mem2bot[7] = 0xbe;
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mem2bot[7] = 0xbe;
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mem2top[0] = 0xde;
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mem2top[0] = 0xde;
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mem2top[1] = 0xad;
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mem2top[1] = 0xad;
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mem2top[2] = 0xbe;
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mem2top[2] = 0xbe;
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mem2top[3] = 0xef;
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mem2top[3] = 0xef;
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mem2top[4] = 0xca;
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mem2top[4] = 0xca;
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mem2top[5] = 0xfe;
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mem2top[5] = 0xfe;
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mem2top[6] = 0xba;
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mem2top[6] = 0xba;
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mem2top[7] = 0xbe;
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mem2top[7] = 0xbe;
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/* Loop for ever doing stuff */
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/* Loop for ever doing stuff */
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while (1)
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while (1)
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{
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{
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}
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}
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} /* main () */
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} /* main () */
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