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Addition of MicroVAX I (VAX610) processor simulator from Matt Burke
This commit is contained in:
Mark Pizzolato
480
VAX/vax610_sysdev.c
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480
VAX/vax610_sysdev.c
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@@ -0,0 +1,480 @@
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/* vax610_sysdev.c: MicroVAX I system-specific logic
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Copyright (c) 2011-2012, Matt Burke
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This module incorporates code from SimH, Copyright (c) 1998-2008, Robert M Supnik
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name(s) of the author(s) shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from the author(s).
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This module contains the MicroVAX I system-specific registers and devices.
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sysd system devices
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15-Feb-2012 MB First Version
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*/
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#include "vax_defs.h"
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#include <time.h>
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#ifndef DONT_USE_INTERNAL_ROM
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#include "vax_ka610_bin.h"
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#endif
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/* MicroVAX I boot device definitions */
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struct boot_dev {
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char *name;
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int32 code;
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};
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extern int32 R[16];
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extern int32 in_ie;
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extern int32 mchk_va, mchk_ref;
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extern int32 int_req[IPL_HLVL];
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extern jmp_buf save_env;
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extern int32 p1;
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extern int32 sim_switches;
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extern FILE *sim_log;
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extern CTAB *sim_vm_cmd;
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extern int32 trpirq, mem_err;
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int32 conisp, conpc, conpsl; /* console reg */
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char cpu_boot_cmd[CBUFSIZE] = { 0 }; /* boot command */
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static struct boot_dev boot_tab[] = {
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{ "RQ", 0x00415544 }, /* DUAn */
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{ "XQ", 0x00415158 }, /* XQAn */
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{ NULL }
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};
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t_stat sysd_reset (DEVICE *dptr);
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t_stat vax610_boot (int32 flag, char *ptr);
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t_stat vax610_boot_parse (int32 flag, char *ptr);
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t_stat cpu_boot (int32 unitno, DEVICE *dptr);
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extern int32 intexc (int32 vec, int32 cc, int32 ipl, int ei);
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extern int32 iccs_rd (void);
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extern int32 todr_rd (void);
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extern int32 rxcs_rd (void);
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extern int32 rxdb_rd (void);
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extern int32 txcs_rd (void);
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extern void iccs_wr (int32 dat);
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extern void todr_wr (int32 dat);
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extern void rxcs_wr (int32 dat);
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extern void txcs_wr (int32 dat);
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extern void txdb_wr (int32 dat);
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extern void ioreset_wr (int32 dat);
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extern int32 eval_int (void);
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/* SYSD data structures
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sysd_dev SYSD device descriptor
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sysd_unit SYSD units
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sysd_reg SYSD register list
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*/
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UNIT sysd_unit = { UDATA (NULL, 0, 0) };
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REG sysd_reg[] = {
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{ HRDATA (CONISP, conisp, 32) },
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{ HRDATA (CONPC, conpc, 32) },
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{ HRDATA (CONPSL, conpsl, 32) },
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{ NULL }
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};
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DEVICE sysd_dev = {
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"SYSD", &sysd_unit, sysd_reg, NULL,
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1, 16, 16, 1, 16, 8,
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NULL, NULL, &sysd_reset,
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NULL, NULL, NULL,
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NULL, 0
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};
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/* Special boot command, overrides regular boot */
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CTAB vax610_cmd[] = {
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{ "BOOT", &vax610_boot, RU_BOOT,
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"bo{ot} <device>{/R5:flg} boot device\n" },
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{ NULL }
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};
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/* Read KA610 specific IPR's */
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int32 ReadIPR (int32 rg)
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{
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int32 val;
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switch (rg) {
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case MT_ICCS: /* ICCS */
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val = iccs_rd ();
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break;
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case MT_RXCS: /* RXCS */
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val = rxcs_rd ();
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break;
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case MT_RXDB: /* RXDB */
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val = rxdb_rd ();
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break;
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case MT_TXCS: /* TXCS */
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val = txcs_rd ();
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break;
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case MT_TXDB: /* TXDB */
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val = 0;
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break;
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case MT_CONISP: /* console ISP */
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val = conisp;
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break;
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case MT_CONPC: /* console PC */
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val = conpc;
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break;
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case MT_CONPSL: /* console PSL */
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val = conpsl;
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break;
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case MT_SID: /* SID */
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val = (VAX610_SID | VAX610_FLOAT | VAX610_MREV | VAX610_HWREV);
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break;
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case MT_NICR: /* NICR */
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case MT_ICR: /* ICR */
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case MT_TODR: /* TODR */
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case MT_CSRS: /* CSRS */
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case MT_CSRD: /* CSRD */
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case MT_CSTS: /* CSTS */
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case MT_CSTD: /* CSTD */
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case MT_TBDR: /* TBDR */
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case MT_CADR: /* CADR */
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case MT_MCESR: /* MCESR */
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case MT_CAER: /* CAER */
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case MT_SBIFS: /* SBIFS */
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case MT_SBIS: /* SBIS */
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case MT_SBISC: /* SBISC */
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case MT_SBIMT: /* SBIMT */
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case MT_SBIER: /* SBIER */
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case MT_SBITA: /* SBITA */
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case MT_SBIQC: /* SBIQC */
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case MT_TBDATA: /* TBDATA */
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case MT_MBRK: /* MBRK */
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case MT_PME: /* PME */
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val = 0;
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break;
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default:
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RSVD_OPND_FAULT;
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}
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return val;
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}
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/* Write KA610 specific IPR's */
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void WriteIPR (int32 rg, int32 val)
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{
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switch (rg) {
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case MT_ICCS: /* ICCS */
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iccs_wr (val);
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break;
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case MT_RXCS: /* RXCS */
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rxcs_wr (val);
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break;
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case MT_RXDB: /* RXDB */
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break;
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case MT_TXCS: /* TXCS */
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txcs_wr (val);
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break;
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case MT_TXDB: /* TXDB */
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txdb_wr (val);
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break;
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case MT_IORESET: /* IORESET */
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ioreset_wr (val);
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break;
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case MT_SID:
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case MT_CONISP:
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case MT_CONPC:
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case MT_CONPSL: /* halt reg */
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RSVD_OPND_FAULT;
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case MT_NICR: /* NICR */
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case MT_ICR: /* ICR */
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case MT_TODR: /* TODR */
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case MT_CSRS: /* CSRS */
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case MT_CSRD: /* CSRD */
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case MT_CSTS: /* CSTS */
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case MT_CSTD: /* CSTD */
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case MT_TBDR: /* TBDR */
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case MT_CADR: /* CADR */
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case MT_MCESR: /* MCESR */
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case MT_CAER: /* CAER */
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case MT_SBIFS: /* SBIFS */
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case MT_SBIS: /* SBIS */
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case MT_SBISC: /* SBISC */
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case MT_SBIMT: /* SBIMT */
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case MT_SBIER: /* SBIER */
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case MT_SBITA: /* SBITA */
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case MT_SBIQC: /* SBIQC */
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case MT_TBDATA: /* TBDATA */
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case MT_MBRK: /* MBRK */
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case MT_PME: /* PME */
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break;
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default:
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RSVD_OPND_FAULT;
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}
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return;
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}
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/* Read/write I/O register space
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These routines are the 'catch all' for address space map. Any
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address that doesn't explicitly belong to memory or I/O
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is given to these routines for processing.
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*/
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struct reglink { /* register linkage */
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uint32 low; /* low addr */
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uint32 high; /* high addr */
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t_stat (*read)(int32 pa); /* read routine */
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void (*write)(int32 pa, int32 val, int32 lnt); /* write routine */
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};
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struct reglink regtable[] = {
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/* { QVMBASE, QVMBASE+QVMSIZE, &qv_mem_rd, &qv_mem_wr }, */
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{ 0, 0, NULL, NULL }
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};
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/* ReadReg - read register space
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Inputs:
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pa = physical address
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lnt = length (BWLQ) - ignored
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Output:
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longword of data
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*/
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int32 ReadReg (uint32 pa, int32 lnt)
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{
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struct reglink *p;
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for (p = ®table[0]; p->low != 0; p++) {
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if ((pa >= p->low) && (pa < p->high) && p->read)
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return p->read (pa);
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}
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MACH_CHECK (MCHK_READ);
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}
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/* WriteReg - write register space
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Inputs:
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pa = physical address
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val = data to write, right justified in 32b longword
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lnt = length (BWLQ)
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Outputs:
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none
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*/
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void WriteReg (uint32 pa, int32 val, int32 lnt)
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{
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struct reglink *p;
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for (p = ®table[0]; p->low != 0; p++) {
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if ((pa >= p->low) && (pa < p->high) && p->write) {
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p->write (pa, val, lnt);
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return;
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}
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}
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mem_err = 1;
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SET_IRQL;
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}
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/* Special boot command - linked into SCP by initial reset
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Syntax: BOOT <device>{/R5:val}
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Sets up R0-R5, calls SCP boot processor with effective BOOT CPU
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*/
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t_stat vax610_boot (int32 flag, char *ptr)
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{
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t_stat r;
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r = vax610_boot_parse (flag, ptr); /* parse the boot cmd */
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if (r != SCPE_OK) /* error? */
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return r;
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strncpy (cpu_boot_cmd, ptr, CBUFSIZE); /* save for reboot */
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return run_cmd (flag, "CPU");
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}
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/* Parse boot command, set up registers - also used on reset */
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t_stat vax610_boot_parse (int32 flag, char *ptr)
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{
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char gbuf[CBUFSIZE];
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char *slptr, *regptr;
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int32 i, r5v, unitno;
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DEVICE *dptr;
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UNIT *uptr;
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DIB *dibp;
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t_stat r;
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regptr = get_glyph (ptr, gbuf, 0); /* get glyph */
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if ((slptr = strchr (gbuf, '/'))) { /* found slash? */
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regptr = strchr (ptr, '/'); /* locate orig */
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*slptr = 0; /* zero in string */
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}
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dptr = find_unit (gbuf, &uptr); /* find device */
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if ((dptr == NULL) || (uptr == NULL))
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return SCPE_ARG;
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dibp = (DIB *) dptr->ctxt; /* get DIB */
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if (dibp == NULL)
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return SCPE_ARG;
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unitno = (int32) (uptr - dptr->units);
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r5v = 0;
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if ((strncmp (regptr, "/R5:", 4) == 0) ||
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(strncmp (regptr, "/R5=", 4) == 0) ||
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(strncmp (regptr, "/r5:", 4) == 0) ||
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(strncmp (regptr, "/r5=", 4) == 0)) {
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r5v = (int32) get_uint (regptr + 4, 16, LMASK, &r);
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if (r != SCPE_OK)
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return r;
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}
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else if (*regptr != 0)
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return SCPE_ARG;
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for (i = 0; boot_tab[i].name != NULL; i++) {
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if (strcmp (dptr->name, boot_tab[i].name) == 0) {
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R[0] = boot_tab[i].code | (('0' + unitno) << 24);
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R[1] = 0xC0;
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R[2] = 0;
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R[3] = 0;
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R[4] = 0;
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R[5] = r5v;
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return SCPE_OK;
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}
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}
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return SCPE_NOFNC;
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}
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int32 sysd_hlt_enb (void)
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{
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return 1;
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}
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/* Machine check */
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int32 machine_check (int32 p1, int32 opc, int32 cc, int32 delta)
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{
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int32 p2, acc;
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p2 = mchk_va + 4; /* save vap */
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cc = intexc (SCB_MCHK, cc, 0, IE_EXC); /* take exception */
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acc = ACC_MASK (KERN); /* in kernel mode */
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in_ie = 1;
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SP = SP - 16; /* push 4 words */
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Write (SP, 12, L_LONG, WA); /* # bytes */
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Write (SP + 4, p1, L_LONG, WA); /* mcheck type */
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Write (SP + 8, p2, L_LONG, WA); /* parameter 1 */
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Write (SP + 12, p2, L_LONG, WA); /* parameter 2 */
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in_ie = 0;
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return cc;
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}
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/* Console entry */
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int32 con_halt (int32 code, int32 cc)
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{
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if ((cpu_boot_cmd[0] == 0) || /* saved boot cmd? */
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(vax610_boot_parse (0, cpu_boot_cmd) != SCPE_OK) || /* reparse the boot cmd */
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(reset_all (0) != SCPE_OK) || /* reset the world */
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(cpu_boot (0, NULL) != SCPE_OK)) /* set up boot code */
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ABORT (STOP_BOOT); /* any error? */
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printf ("Rebooting...\n");
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if (sim_log)
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fprintf (sim_log, "Rebooting...\n");
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return cc;
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}
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/* Bootstrap */
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t_stat cpu_boot (int32 unitno, DEVICE *dptr)
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{
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t_stat r;
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printf ("Loading boot code from ka610.bin\n");
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if (sim_log) fprintf (sim_log,
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"Loading boot code from ka610.bin\n");
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r = load_cmd (0, "-O ka610.bin 200");
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if (r != SCPE_OK) {
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#ifndef DONT_USE_INTERNAL_ROM
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FILE *f;
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if ((f = sim_fopen ("ka610.bin", "wb"))) {
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printf ("Saving boot code to ka610.bin\n");
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if (sim_log)
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fprintf (sim_log, "Saving boot code to ka610.bin\n");
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sim_fwrite (vax_ka610_bin, sizeof(vax_ka610_bin[0]), sizeof(vax_ka610_bin)/sizeof(vax_ka610_bin[0]), f);
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fclose (f);
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printf ("Loading boot code from ka610.bin\n");
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if (sim_log)
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fprintf (sim_log, "Loading boot code from ka610.bin\n");
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r = load_cmd (0, "-O ka610.bin 200");
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if (r == SCPE_OK)
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SP = PC = 512;
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}
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#endif
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return r;
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}
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SP = PC = 512;
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AP = 1;
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return SCPE_OK;
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}
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/* SYSD reset */
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t_stat sysd_reset (DEVICE *dptr)
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{
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sim_vm_cmd = vax610_cmd;
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return SCPE_OK;
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}
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t_stat cpu_set_model (UNIT *uptr, int32 val, char *cptr, void *desc)
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{
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return SCPE_NOFNC;
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}
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t_stat cpu_show_model (FILE *st, UNIT *uptr, int32 val, void *desc)
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{
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fprintf (st, "model=MicroVAX I");
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return SCPE_OK;
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}
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Reference in New Issue
Block a user