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NetBSD/sys/arch/hpcmips/vr/vr.c

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/* $NetBSD: vr.c,v 1.8 1999/12/04 14:23:36 takemura Exp $ */
/*-
* Copyright (c) 1999
* Shin Takemura and PocketBSD Project. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the PocketBSD project
* and its contributors.
* 4. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#include <machine/reg.h>
#include <machine/psl.h>
#include <machine/locore.h>
#include <machine/sysconf.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <mips/mips_param.h> /* hokey spl()s */
#include <mips/mips/mips_mcclock.h> /* mcclock CPUspeed estimation */
#include <hpcmips/vr/vr.h>
#include <hpcmips/vr/vripreg.h>
#include <hpcmips/vr/rtcreg.h>
#include <hpcmips/hpcmips/machdep.h> /* XXXjrs replace with vectors */
#include <machine/bootinfo.h>
#include "vrip.h"
#if NVRIP > 0
#include <hpcmips/vr/vripvar.h>
#endif
#include "vrdsu.h"
#if NVRDSU > 0
#include <hpcmips/vr/vrdsuvar.h>
#endif
#include "com.h"
#if NCOM > 0
#include <sys/termios.h>
#include <sys/ttydefaults.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#include <hpcmips/vr/siureg.h>
#include <hpcmips/vr/com_vripvar.h>
#ifndef CONSPEED
#define CONSPEED TTYDEF_SPEED
#endif
#endif
#include "fb.h"
#include "vrkiu.h"
#if NFB > 0 || NVRKIU > 0
#include <dev/rcons/raster.h>
#include <dev/wscons/wsdisplayvar.h>
#endif
#if NFB > 0
#include <arch/hpcmips/dev/fbvar.h>
#endif
#if NFB > 0
#include <arch/hpcmips/vr/vrkiuvar.h>
#endif
void vr_init __P((void));
void vr_os_init __P((void));
void vr_bus_reset __P((void));
int vr_intr __P((u_int32_t mask, u_int32_t pc, u_int32_t statusReg, u_int32_t causeReg));
void vr_cons_init __P((void));
void vr_device_register __P((struct device *, void *));
void vr_fb_init __P((caddr_t*));
int vr_mem_init __P((caddr_t));
void vr_reboot __P((int howto, char *bootstr));
char *vrbcu_vrip_getcpuname __P((void));
int vrbcu_vrip_getcpumajor __P((void));
int vrbcu_vrip_getcpuminor __P((void));
extern unsigned nullclkread __P((void));
extern unsigned (*clkread) __P((void));
/*
* CPU interrupt dispatch table (HwInt[0:3])
*/
int null_handler __P((void*, u_int32_t, u_int32_t));
static int (*intr_handler[4]) __P((void*, u_int32_t, u_int32_t)) =
{
null_handler,
null_handler,
null_handler,
null_handler
};
static void *intr_arg[4];
void
vr_init()
{
/*
* Platform Information.
*/
/*
* Platform Specific Function Hooks
*/
platform.os_init = vr_os_init;
platform.bus_reset = vr_bus_reset;
platform.cons_init = vr_cons_init;
platform.device_register = vr_device_register;
platform.fb_init = vr_fb_init;
platform.mem_init = vr_mem_init;
platform.reboot = vr_reboot;
sprintf(cpu_model, "NEC %s rev%d.%d",
vrbcu_vrip_getcpuname(),
vrbcu_vrip_getcpumajor(),
vrbcu_vrip_getcpuminor());
}
int
vr_mem_init(kernend)
caddr_t kernend; /* kseg0 */
{
u_int32_t startaddr, endaddr, page;
int npage;
#define VR41_SYSADDR_DRAMSTART 0x0
#define VR41_SYSADDR_DRAM_LEN 0x04000000
startaddr = MIPS_PHYS_TO_KSEG1(
(btoc((u_int32_t)kernend - MIPS_KSEG0_START)) << PGSHIFT);
endaddr = MIPS_PHYS_TO_KSEG1(VR41_SYSADDR_DRAMSTART +
VR41_SYSADDR_DRAM_LEN);
for(page = startaddr, npage = 0; page < endaddr;
page+= NBPG, npage++) {
if (badaddr((char*)page, 4))
break;
((volatile int *)page)[0] = 0xa5a5a5a5;
((volatile int *)page)[4] = 0x5a5a5a5a;
wbflush();
if (*(volatile int *)page != 0xa5a5a5a5)
break;
}
/* Clear currently unused D-RAM area (For reboot Windows CE clearly)*/
memset((void*)startaddr, 0, npage * NBPG);
memset((void*)(KERNBASE + 0x400), 0, KERNTEXTOFF - KERNBASE - 0x800);
return npage;
}
void
vr_fb_init(kernend)
caddr_t *kernend;
{
/* Nothing to do */
}
void
vr_os_init()
{
/*
* Set up interrupt handling and I/O addresses.
*/
mips_hardware_intr = vr_intr;
splvec.splbio = MIPS_SPL0;
splvec.splnet = MIPS_SPL0;
splvec.spltty = MIPS_SPL0;
splvec.splimp = MIPS_SPL0;
splvec.splclock = MIPS_SPL_0_1;
splvec.splstatclock = MIPS_SPL_0_1;
/* no high resolution timer circuit; possibly never called */
clkread = nullclkread;
#ifdef NOT_YET
mcclock_addr = (volatile struct chiptime *)
MIPS_PHYS_TO_KSEG1(Vr_SYS_CLOCK);
mc_cpuspeed(mcclock_addr, MIPS_INT_MASK_1);
#else
printf("%s(%d): cpuspeed estimation is notimplemented\n",
__FILE__, __LINE__);
#endif
#ifdef HPCMIPS_L1CACHE_DISABLE
cpuspeed = 1; /* XXX, CPU is very very slow because L1 cache is */
/* disabled. */
#endif /* HPCMIPS_L1CAHCE_DISABLE */
}
/*
* Initalize the memory system and I/O buses.
*/
void
vr_bus_reset()
{
printf("%s(%d): vr_bus_reset() not implemented.\n",
__FILE__, __LINE__);
}
void
vr_cons_init()
{
#if NCOM > 0 || NFB > 0 || NVRKIU > 0
extern bus_space_tag_t system_bus_iot;
extern bus_space_tag_t mb_bus_space_init __P((void));
#endif
#if NCOM > 0
if (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) {
/* Serial console */
mb_bus_space_init(); /* At this time, not initialized yet */
if(com_vrip_cnattach(system_bus_iot, 0x0c000000, CONSPEED,
VRCOM_FREQ,
(TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) {
printf("%s(%d): can't init serial console", __FILE__, __LINE__);
} else {
return;
}
}
#endif
#if NFB > 0
mb_bus_space_init(); /* At this time, not initialized yet */
if(fb_cnattach(system_bus_iot, 0x0c000000, 0, 0)) {
printf("%s(%d): can't init fb console", __FILE__, __LINE__);
} else {
goto find_keyboard;
}
#endif
find_keyboard:
#if NVRKIU > 0
if (vrkiu_cnattach(system_bus_iot, VRIP_KIU_ADDR)) {
printf("%s(%d): can't init vrkiu as console",
__FILE__, __LINE__);
} else {
return;
}
#endif
}
void
vr_device_register(dev, aux)
struct device *dev;
void *aux;
{
printf("%s(%d): vr_device_register() not implemented.\n",
__FILE__, __LINE__);
panic("abort");
}
void
vr_reboot(howto, bootstr)
int howto;
char *bootstr;
{
/*
* power down
*/
if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
printf("fake powerdown\n");
__asm(__CONCAT(".word ",___STRING(VR_OPCODE_HIBERNATE)));
__asm("nop");
__asm("nop");
__asm("nop");
__asm("nop");
__asm("nop");
__asm(".set reorder");
/* not reach */
vr_reboot(howto&~RB_HALT, bootstr);
}
/*
* halt
*/
if (howto & RB_HALT) {
#if NVRIP > 0
_spllower(~MIPS_INT_MASK_0);
vrip_intr_suspend();
#else
splhigh();
#endif
__asm(".set noreorder");
__asm(__CONCAT(".word ",___STRING(VR_OPCODE_SUSPEND)));
__asm("nop");
__asm("nop");
__asm("nop");
__asm("nop");
__asm("nop");
__asm(".set reorder");
#if NVRIP > 0
vrip_intr_resume();
#endif
}
/*
* reset
*/
#if NVRDSU
vrdsu_reset();
#else
printf("%s(%d): There is no DSU.", __FILE__, __LINE__);
#endif
}
void *
vr_intr_establish(line, ih_fun, ih_arg)
int line;
int (*ih_fun) __P((void*, u_int32_t, u_int32_t));
void *ih_arg;
{
if (intr_handler[line] != null_handler) {
panic("vr_intr_establish: can't establish duplicated intr handler.");
}
intr_handler[line] = ih_fun;
intr_arg[line] = ih_arg;
return (void*)line;
}
void
vr_intr_disestablish(ih)
void *ih;
{
int line = (int)ih;
intr_handler[line] = null_handler;
intr_arg[line] = NULL;
}
int
null_handler(arg, pc, statusReg)
void *arg;
u_int32_t pc;
u_int32_t statusReg;
{
printf("null_handler\n");
return 0;
}
/*
* Handle interrupts.
*/
int
vr_intr(mask, pc, status, cause)
u_int32_t mask;
u_int32_t pc;
u_int32_t status;
u_int32_t cause;
{
int hwintr;
hwintr = (ffs(mask >> 10) -1) & 0x3;
(*intr_handler[hwintr])(intr_arg[hwintr], pc, status);
return (MIPS_SR_INT_IE | (status & ~cause & MIPS_HARD_INT_MASK));
}
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