ARCBIOS emulation code to be used on machines without ARCBIOS
Currently supports only IP12, but can be made to support others. includes effort from Steve Rumble and myself
This commit is contained in:
pooka
parent
667d14673b
commit
cafa4ad8f9
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/* $NetBSD: arcemu.c,v 1.1 2004/04/10 19:53:48 pooka Exp $ */
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/*
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* Copyright (c) 2004 Steve Rumble
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* Copyright (c) 2004 Antti Kantee
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/machtype.h>
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#include <machine/bus.h>
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#include <dev/cons.h>
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#include <dev/arcbios/arcbios.h>
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#include <dev/arcbios/arcbiosvar.h>
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#include <dev/ic/smc93cx6var.h>
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#define _ARCEMU_PRIVATE
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#include <sgimips/sgimips/arcemu.h>
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#include <sgimips/dev/picreg.h>
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static struct consdev arcemu_ip12_cn = {
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NULL, /* probe */
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NULL, /* init */
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NULL, /* getc */ /* XXX: this would be nice */
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arcemu_ip12_putc, /* putc */
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nullcnpollc, /* pollc */
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NULL, /* bell */
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NULL,
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NULL,
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NODEV,
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CN_NORMAL,
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};
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/*
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* Emulate various ARCBIOS functions on pre-ARCS sgimips
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* machines (<= IP17).
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*/
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static struct arcbios_fv arcemu_v = {
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.Load = arcemu_unimpl_Load,
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.Invoke = arcemu_unimpl_Invoke,
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.Execute = arcemu_unimpl_Execute,
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.Halt = arcemu_unimpl_void_void_noret,
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.PowerDown = arcemu_unimpl_void_void_noret,
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.Restart = arcemu_unimpl_void_void_noret,
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.Reboot = arcemu_unimpl_void_void_noret,
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.EnterInteractiveMode = arcemu_unimpl_void_void_noret,
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.reserved0 = NULL,
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.GetPeer = arcemu_unimpl_voidptr_voidptr,
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.GetChild = arcemu_unimpl_voidptr_voidptr,
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.GetParent = arcemu_unimpl_voidptr_voidptr,
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.GetConfigurationData = arcemu_unimpl_GetConfigurationData,
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.AddChild = arcemu_unimpl_AddChild,
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.DeleteComponent = arcemu_unimpl_DeleteComponent,
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.GetComponent = arcemu_unimpl_GetComponent,
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.SaveConfiguration = arcemu_unimpl_SaveConfiguration,
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.GetSystemId = arcemu_unimpl_voidptr_void,
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.GetMemoryDescriptor = arcemu_unimpl_GetMemoryDescriptor,
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.reserved1 = NULL,
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.GetTime = arcemu_unimpl_voidptr_void,
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.GetRelativeTime = arcemu_unimpl_GetRelativeTime,
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.GetDirectoryEntry = arcemu_unimpl_GetDirectoryEntry,
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.Open = arcemu_unimpl_Open,
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.Close = arcemu_unimpl_Close,
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.Read = arcemu_unimpl_GetDirectoryEntry,
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.GetReadStatus = arcemu_unimpl_GetReadStatus,
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.Write = arcemu_unimpl_GetDirectoryEntry,
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.Seek = arcemu_unimpl_Seek,
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.Mount = arcemu_unimpl_Mount,
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.GetEnvironmentVariable = arcemu_unimpl_GetEnvironmentVariable,
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.SetEnvironmentVariable = arcemu_unimpl_SetEnvironmentVariable,
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.GetFileInformation = arcemu_unimpl_GetFileInformation,
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.SetFileInformation = arcemu_unimpl_SetFileInformation,
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.FlushAllCaches = arcemu_unimpl_void_void
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};
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/*
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* Establish our emulated ARCBIOS vector or return ARCBIOS failure.
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*/
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int
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arcemu_init()
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{
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switch (arcemu_identify()) {
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case MACH_SGI_IP12:
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arcemu_ip12_init();
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break;
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default:
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return (1);
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}
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ARCBIOS = &arcemu_v;
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return (0);
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}
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/* Attempt to identify the SGI IP%d platform. */
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static int
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arcemu_identify()
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{
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/*
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* XXX - identifying an HPC should be sufficient for IP12
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* since it's the only non-ARCS offering with one.
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*/
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return (MACH_SGI_IP12); /* boy, that was easy! */
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}
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/*
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* IP12 specific
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*/
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/*
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* The following matches IP12 NVRAM memory layout
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*/
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static struct arcemu_ip12_nvramdata {
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char bootmode;
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char state;
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char netaddr[16];
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char lbaud[5];
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char rbaud[5];
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char console;
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char sccolor[6];
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char pgcolor[6];
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char lgcolor[6];
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char keydb;
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char pad0;
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char checksum;
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char diskless;
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char nokdb;
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char bootfile[50];
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char passwd[17];
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char volume[3];
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uint8_t enaddr[6];
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} ip12nvram;
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static char ip12enaddr[18];
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static void
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arcemu_ip12_eeprom_read()
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{
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struct seeprom_descriptor sd;
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bus_space_handle_t bsh;
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bus_space_tag_t tag;
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uint32_t reg;
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tag = SGIMIPS_BUS_SPACE_NORMAL;
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bus_space_map(tag, 0x1fa00000 + 0x1801bf, 1, 0, &bsh);
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/*
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* 4D/3x and VIP12 sport a smaller EEPROM than Indigo HP1/HPLC.
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* We're only interested in the first 64 half-words in either
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* case, but the seeprom driver has to know how many addressing
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* bits to feed the chip.
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*/
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reg = *(volatile u_int32_t *)MIPS_PHYS_TO_KSEG1(0x1fbd0000);
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if ((reg & 0x8000) == 0)
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sd.sd_chip = C46;
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else
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sd.sd_chip = C56_66;
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sd.sd_tag = tag;
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sd.sd_bsh = bsh;
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sd.sd_regsize = 1;
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sd.sd_control_offset = 0;
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sd.sd_status_offset = 0;
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sd.sd_dataout_offset = 0;
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sd.sd_chip = C56_66;
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sd.sd_DI = 0x10; /* EEPROM -> CPU */
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sd.sd_DO = 0x08; /* CPU -> EEPROM */
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sd.sd_CK = 0x04;
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sd.sd_CS = 0x02;
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sd.sd_MS = 0;
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sd.sd_RDY = 0;
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if (read_seeprom(&sd, (uint16_t *)&ip12nvram, 0, 64) != 1)
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panic("arcemu: NVRAM read failed");
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bus_space_unmap(tag, bsh, 1); /* play technically nice */
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/* cache enaddr string */
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sprintf(ip12enaddr, "%02x:%02x:%02x:%02x:%02x:%02x",
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ip12nvram.enaddr[0],
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ip12nvram.enaddr[1],
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ip12nvram.enaddr[2],
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ip12nvram.enaddr[3],
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ip12nvram.enaddr[4],
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ip12nvram.enaddr[5]);
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}
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static void
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arcemu_ip12_init()
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{
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arcemu_v.GetPeer = arcemu_ip12_GetPeer;
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arcemu_v.GetChild = arcemu_ip12_GetChild;
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arcemu_v.GetEnvironmentVariable = arcemu_ip12_GetEnvironmentVariable;
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arcemu_v.GetMemoryDescriptor = arcemu_ip12_GetMemoryDescriptor;
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arcemu_v.Reboot = IP12_PROM_REBOOT;
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arcemu_v.PowerDown = IP12_PROM_POWER_DOWN;
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arcemu_v.EnterInteractiveMode = IP12_PROM_INTERACTIVE_MODE;
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cn_tab = &arcemu_ip12_cn;
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arcemu_ip12_eeprom_read();
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strcpy(arcbios_system_identifier, "SGI-IP12");
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strcpy(arcbios_sysid_vendor, "SGI");
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strcpy(arcbios_sysid_product, "IP12");
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}
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static void *
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arcemu_ip12_GetPeer(void *node)
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{
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int i;
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if (node == NULL)
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return (NULL);
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for (i = 0; ip12_tree[i].Class != -1; i++) {
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if (&ip12_tree[i] == node && ip12_tree[i+1].Class != -1)
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return (&ip12_tree[i+1]);
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}
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return (NULL);
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}
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static void *
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arcemu_ip12_GetChild(void *node)
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{
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/*
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* ARCBIOS just walks the entire tree, so we'll represent our
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* emulated tree as a single level and avoid messy hierarchies.
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*/
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if (node == NULL)
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return (&ip12_tree[0]);
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return (NULL);
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}
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static char *
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arcemu_ip12_GetEnvironmentVariable(char *var)
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{
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/* 'd'ebug (serial), 'g'raphics, 'G'raphics w/ logo */
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if (strcasecmp("ConsoleOut", var) == 0) {
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switch (ip12nvram.console) {
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case 'd':
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case 'D':
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case 's':
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case 'S':
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return "serial(0)";
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case 'g':
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case 'G':
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return "graphics(0)";
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default:
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printf("arcemu: unknown console type %c\n",
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ip12nvram.console);
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}
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}
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/* Not super-important. My IP12 is 33MHz ;p */
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if (strcasecmp("cpufreq", var) == 0)
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return ("33");
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if (strcasecmp("dbaud", var) == 0)
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return (ip12nvram.lbaud);
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if (strcasecmp("eaddr", var) == 0)
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return (ip12enaddr);
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/* makebootdev() can handle "dksc(a,b,c)/netbsd", etc already */
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if (strcasecmp("OSLoadPartition", var) == 0)
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return (ip12nvram.bootfile);
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/* pull filename from e.g.: "dksc(0,1,0)netbsd" */
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if (strcasecmp("OSLoadFilename", var) == 0) {
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char *file;
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if ((file = strrchr(ip12nvram.bootfile, ')')) != NULL)
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return (file + 1);
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else
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return (NULL);
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}
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return (NULL);
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}
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static void *
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arcemu_ip12_GetMemoryDescriptor(void *mem)
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{
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static int bank;
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u_int32_t memcfg;
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static struct arcbios_mem am;
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if (mem == NULL)
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bank = 0;
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else if (bank > 3)
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return (NULL);
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switch (bank) {
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case 0:
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memcfg = *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PIC_MEMCFG0_PHYSADDR)
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>>16;
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break;
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case 1:
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memcfg = *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PIC_MEMCFG0_PHYSADDR)
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& 0xffff;
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break;
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case 2:
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memcfg = *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PIC_MEMCFG1_PHYSADDR)
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>> 16;
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break;
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case 3:
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memcfg = *(u_int32_t *)MIPS_PHYS_TO_KSEG1(PIC_MEMCFG1_PHYSADDR)
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& 0xffff;
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break;
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default:
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memcfg = PIC_MEMCFG_BADADDR;
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}
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if (memcfg == PIC_MEMCFG_BADADDR) {
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am.Type = ARCBIOS_MEM_BadMemory;
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am.BasePage =
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PIC_MEMCFG_ADDR(PIC_MEMCFG_BADADDR) / ARCBIOS_PAGESIZE;
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am.PageCount = 0;
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} else {
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am.Type = ARCBIOS_MEM_FreeContiguous;
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am.BasePage = PIC_MEMCFG_ADDR(memcfg) / ARCBIOS_PAGESIZE;
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am.PageCount = PIC_MEMCFG_SIZ(memcfg) / ARCBIOS_PAGESIZE;
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}
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bank++;
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return (&am);
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}
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/*
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* If this breaks.. well.. then it breaks.
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*/
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static void
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arcemu_ip12_putc(dev_t dummy, int c)
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{
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static void (*ip12write)(char *, int, int, int) = IP12_PROM_PRINT;
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char t[2];
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t[0] = c;
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t[1] = '\0';
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ip12write(t, 0, 0, 0);
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}
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/*
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* Unimplemented Vectors
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*/
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static void
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arcemu_unimpl()
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{
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panic("arcemu vector not established on IP%d.\n", mach_type);
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}
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static void
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arcemu_unimpl_void_void_noret()
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{
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panic("arcemu vector not established on IP%d.\n", mach_type);
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}
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static void
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arcemu_unimpl_void_void()
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{
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arcemu_unimpl();
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}
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static void *
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arcemu_unimpl_voidptr_void()
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{
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arcemu_unimpl();
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return (NULL);
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}
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static void *
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arcemu_unimpl_voidptr_voidptr(void *a)
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{
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arcemu_unimpl();
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return (NULL);
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}
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static uint32_t
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arcemu_unimpl_Load(char *a, uint32_t b, uint32_t c, uint32_t *d)
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{
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arcemu_unimpl();
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return (0);
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}
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static uint32_t
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arcemu_unimpl_Invoke(uint32_t a, uint32_t b, uint32_t c, char **d, char **e)
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{
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arcemu_unimpl();
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return (0);
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}
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static uint32_t
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arcemu_unimpl_Execute(char *a, uint32_t b, char **c, char **d)
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{
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arcemu_unimpl();
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return (0);
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}
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static uint32_t
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arcemu_unimpl_GetConfigurationData(void *a, void *b)
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{
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arcemu_unimpl();
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return (0);
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}
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static void *
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arcemu_unimpl_AddChild(void *a, void *b)
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{
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arcemu_unimpl();
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return (NULL);
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}
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static uint32_t
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arcemu_unimpl_DeleteComponent(void *a)
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{
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arcemu_unimpl();
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return (0);
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}
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static uint32_t
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arcemu_unimpl_GetComponent(char *a)
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{
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arcemu_unimpl();
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return (0);
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}
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static uint32_t
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arcemu_unimpl_SaveConfiguration()
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{
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arcemu_unimpl();
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return (0);
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}
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static void *
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arcemu_unimpl_GetMemoryDescriptor(void *a)
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{
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arcemu_unimpl();
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return (NULL);
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}
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static uint32_t
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arcemu_unimpl_GetRelativeTime()
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{
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arcemu_unimpl();
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return (0);
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}
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static uint32_t
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arcemu_unimpl_GetDirectoryEntry(uint32_t a, void *b, uint32_t c, uint32_t *d)
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{
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arcemu_unimpl();
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||||
return (0);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_Open(char *a, uint32_t b, uint32_t *c)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_Close(uint32_t a)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_GetReadStatus(uint32_t a)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_Seek(uint32_t a, int64_t *b, uint32_t c)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_Mount(char *a, uint32_t b)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static char *
|
||||
arcemu_unimpl_GetEnvironmentVariable(char *a)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_SetEnvironmentVariable(char *a, char *b)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_GetFileInformation(uint32_t a, void *b)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static uint32_t
|
||||
arcemu_unimpl_SetFileInformation(uint32_t a, uint32_t b, uint32_t c)
|
||||
{
|
||||
arcemu_unimpl();
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
|
@ -0,0 +1,109 @@
|
|||
/* $NetBSD: arcemu.h,v 1.1 2004/04/10 19:53:48 pooka Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 2004 Steve Rumble
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
#ifndef _ARCEMU_H_
|
||||
|
||||
#include <sys/param.h>
|
||||
|
||||
#include <mips/cpuregs.h>
|
||||
|
||||
#include <dev/arcbios/arcbios.h>
|
||||
#include <dev/arcbios/arcbiosvar.h>
|
||||
|
||||
int arcemu_init(void);
|
||||
|
||||
#ifdef _ARCEMU_PRIVATE
|
||||
|
||||
/* Platform identification */
|
||||
static int arcemu_identify(void);
|
||||
|
||||
/*
|
||||
* IP12 Emulation
|
||||
*/
|
||||
|
||||
/* Prom Emulators */
|
||||
static void arcemu_ip12_init(void);
|
||||
static void * arcemu_ip12_GetPeer(void *);
|
||||
static void * arcemu_ip12_GetChild(void *);
|
||||
static char * arcemu_ip12_GetEnvironmentVariable(char *);
|
||||
static void * arcemu_ip12_GetMemoryDescriptor(void *mem);
|
||||
|
||||
static void arcemu_ip12_eeprom_read(void);
|
||||
static void arcemu_ip12_putc(dev_t, int);
|
||||
|
||||
/* Prom Vectors */
|
||||
#define IP12_PROM_REBOOT (void *)MIPS_PHYS_TO_KSEG1(0x1fc00000)
|
||||
#define IP12_PROM_POWER_DOWN (void *)MIPS_PHYS_TO_KSEG1(0x1fc00018)
|
||||
#define IP12_PROM_INTERACTIVE_MODE (void *)MIPS_PHYS_TO_KSEG1(0x1fc00018)
|
||||
#define IP12_PROM_PRINT (void *)MIPS_PHYS_TO_KSEG1(0x1fc00080)
|
||||
|
||||
/* ARCBIOS Component Tree. Represented in linear fashion. */
|
||||
static struct arcbios_component ip12_tree[] = {
|
||||
{ COMPONENT_CLASS_ProcessorClass, COMPONENT_TYPE_CPU,
|
||||
-1, -1, -1, -1, -1, -1, -1, NULL },
|
||||
|
||||
/* end of list */
|
||||
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, NULL }
|
||||
};
|
||||
|
||||
/*
|
||||
* Unimplmented Vectors
|
||||
*/
|
||||
|
||||
static void arcemu_unimpl(void);
|
||||
static void arcemu_unimpl_void_void_noret(void)
|
||||
__attribute__((__noreturn__));
|
||||
static void arcemu_unimpl_void_void(void);
|
||||
static void *arcemu_unimpl_voidptr_void(void);
|
||||
static void *arcemu_unimpl_voidptr_voidptr(void *);
|
||||
static uint32_t arcemu_unimpl_Load(char *, uint32_t, uint32_t, uint32_t *);
|
||||
static uint32_t arcemu_unimpl_Invoke(uint32_t, uint32_t, uint32_t, char **,
|
||||
char **);
|
||||
static uint32_t arcemu_unimpl_Execute(char *, uint32_t, char **, char **);
|
||||
static uint32_t arcemu_unimpl_GetConfigurationData(void *, void *);
|
||||
static void *arcemu_unimpl_AddChild(void *, void *);
|
||||
static uint32_t arcemu_unimpl_DeleteComponent(void *);
|
||||
static uint32_t arcemu_unimpl_GetComponent(char *);
|
||||
static uint32_t arcemu_unimpl_SaveConfiguration(void);
|
||||
static void *arcemu_unimpl_GetMemoryDescriptor(void *);
|
||||
static uint32_t arcemu_unimpl_GetRelativeTime(void);
|
||||
static uint32_t arcemu_unimpl_GetDirectoryEntry(uint32_t, void *, uint32_t,
|
||||
uint32_t *);
|
||||
static uint32_t arcemu_unimpl_Open(char *, uint32_t, uint32_t *);
|
||||
static uint32_t arcemu_unimpl_Close(uint32_t);
|
||||
static uint32_t arcemu_unimpl_GetReadStatus(uint32_t);
|
||||
static uint32_t arcemu_unimpl_Seek(uint32_t, int64_t *, uint32_t);
|
||||
static uint32_t arcemu_unimpl_Mount(char *, uint32_t);
|
||||
static char *arcemu_unimpl_GetEnvironmentVariable(char *);
|
||||
static uint32_t arcemu_unimpl_SetEnvironmentVariable(char *, char *);
|
||||
static uint32_t arcemu_unimpl_GetFileInformation(uint32_t, void *);
|
||||
static uint32_t arcemu_unimpl_SetFileInformation(uint32_t, uint32_t, uint32_t);
|
||||
|
||||
#endif /* _ARCEMU_PRIVATE */
|
||||
|
||||
#endif /* _ARCEMU_H_ */
|
||||
Loading…
Reference in New Issue