281 lines
7.2 KiB
C
281 lines
7.2 KiB
C
/*
|
|
* arch/m68k/mvme16x/config.c
|
|
*
|
|
* Copyright (C) 1995 Richard Hirst [richard@sleepie.demon.co.uk]
|
|
*
|
|
* Based on:
|
|
*
|
|
* linux/amiga/config.c
|
|
*
|
|
* Copyright (C) 1993 Hamish Macdonald
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file README.legal in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/console.h>
|
|
#include <linux/linkage.h>
|
|
#include <linux/init.h>
|
|
#include <linux/major.h>
|
|
#include <linux/genhd.h>
|
|
#include <linux/rtc.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/system.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/setup.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/traps.h>
|
|
#include <asm/rtc.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/mvme16xhw.h>
|
|
|
|
extern t_bdid mvme_bdid;
|
|
|
|
static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE;
|
|
|
|
static void mvme16x_get_model(char *model);
|
|
extern void mvme16x_sched_init(irq_handler_t handler);
|
|
extern unsigned long mvme16x_gettimeoffset (void);
|
|
extern int mvme16x_hwclk (int, struct rtc_time *);
|
|
extern int mvme16x_set_clock_mmss (unsigned long);
|
|
extern void mvme16x_reset (void);
|
|
extern void mvme16x_waitbut(void);
|
|
|
|
int bcd2int (unsigned char b);
|
|
|
|
/* Save tick handler routine pointer, will point to do_timer() in
|
|
* kernel/sched.c, called via mvme16x_process_int() */
|
|
|
|
static irq_handler_t tick_handler;
|
|
|
|
|
|
unsigned short mvme16x_config;
|
|
EXPORT_SYMBOL(mvme16x_config);
|
|
|
|
|
|
int mvme16x_parse_bootinfo(const struct bi_record *bi)
|
|
{
|
|
if (bi->tag == BI_VME_TYPE || bi->tag == BI_VME_BRDINFO)
|
|
return 0;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
void mvme16x_reset(void)
|
|
{
|
|
printk ("\r\n\nCalled mvme16x_reset\r\n"
|
|
"\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r");
|
|
/* The string of returns is to delay the reset until the whole
|
|
* message is output. Assert reset bit in GCSR */
|
|
*(volatile char *)0xfff40107 = 0x80;
|
|
}
|
|
|
|
static void mvme16x_get_model(char *model)
|
|
{
|
|
p_bdid p = &mvme_bdid;
|
|
char suf[4];
|
|
|
|
suf[1] = p->brdsuffix[0];
|
|
suf[2] = p->brdsuffix[1];
|
|
suf[3] = '\0';
|
|
suf[0] = suf[1] ? '-' : '\0';
|
|
|
|
sprintf(model, "Motorola MVME%x%s", p->brdno, suf);
|
|
}
|
|
|
|
|
|
static void mvme16x_get_hardware_list(struct seq_file *m)
|
|
{
|
|
p_bdid p = &mvme_bdid;
|
|
|
|
if (p->brdno == 0x0162 || p->brdno == 0x0172)
|
|
{
|
|
unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
|
|
|
|
seq_printf (m, "VMEchip2 %spresent\n",
|
|
rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
|
|
seq_printf (m, "SCSI interface %spresent\n",
|
|
rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
|
|
seq_printf (m, "Ethernet i/f %spresent\n",
|
|
rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function is called during kernel startup to initialize
|
|
* the mvme16x IRQ handling routines. Should probably ensure
|
|
* that the base vectors for the VMEChip2 and PCCChip2 are valid.
|
|
*/
|
|
|
|
static void __init mvme16x_init_IRQ (void)
|
|
{
|
|
m68k_setup_user_interrupt(VEC_USER, 192, NULL);
|
|
}
|
|
|
|
#define pcc2chip ((volatile u_char *)0xfff42000)
|
|
#define PccSCCMICR 0x1d
|
|
#define PccSCCTICR 0x1e
|
|
#define PccSCCRICR 0x1f
|
|
|
|
void __init config_mvme16x(void)
|
|
{
|
|
p_bdid p = &mvme_bdid;
|
|
char id[40];
|
|
|
|
mach_max_dma_address = 0xffffffff;
|
|
mach_sched_init = mvme16x_sched_init;
|
|
mach_init_IRQ = mvme16x_init_IRQ;
|
|
mach_gettimeoffset = mvme16x_gettimeoffset;
|
|
mach_hwclk = mvme16x_hwclk;
|
|
mach_set_clock_mmss = mvme16x_set_clock_mmss;
|
|
mach_reset = mvme16x_reset;
|
|
mach_get_model = mvme16x_get_model;
|
|
mach_get_hardware_list = mvme16x_get_hardware_list;
|
|
|
|
/* Report board revision */
|
|
|
|
if (strncmp("BDID", p->bdid, 4))
|
|
{
|
|
printk ("\n\nBug call .BRD_ID returned garbage - giving up\n\n");
|
|
while (1)
|
|
;
|
|
}
|
|
/* Board type is only set by newer versions of vmelilo/tftplilo */
|
|
if (vme_brdtype == 0)
|
|
vme_brdtype = p->brdno;
|
|
|
|
mvme16x_get_model(id);
|
|
printk ("\nBRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id, p->rev>>4,
|
|
p->rev&0xf, p->yr, p->mth, p->day);
|
|
if (p->brdno == 0x0162 || p->brdno == 0x172)
|
|
{
|
|
unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
|
|
|
|
mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA;
|
|
|
|
printk ("MVME%x Hardware status:\n", p->brdno);
|
|
printk (" CPU Type 68%s040\n",
|
|
rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC");
|
|
printk (" CPU clock %dMHz\n",
|
|
rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25);
|
|
printk (" VMEchip2 %spresent\n",
|
|
rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
|
|
printk (" SCSI interface %spresent\n",
|
|
rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
|
|
printk (" Ethernet interface %spresent\n",
|
|
rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
|
|
}
|
|
else
|
|
{
|
|
mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401;
|
|
|
|
/* Dont allow any interrupts from the CD2401 until the interrupt */
|
|
/* handlers are installed */
|
|
|
|
pcc2chip[PccSCCMICR] = 0x10;
|
|
pcc2chip[PccSCCTICR] = 0x10;
|
|
pcc2chip[PccSCCRICR] = 0x10;
|
|
}
|
|
}
|
|
|
|
static irqreturn_t mvme16x_abort_int (int irq, void *dev_id)
|
|
{
|
|
p_bdid p = &mvme_bdid;
|
|
unsigned long *new = (unsigned long *)vectors;
|
|
unsigned long *old = (unsigned long *)0xffe00000;
|
|
volatile unsigned char uc, *ucp;
|
|
|
|
if (p->brdno == 0x0162 || p->brdno == 0x172)
|
|
{
|
|
ucp = (volatile unsigned char *)0xfff42043;
|
|
uc = *ucp | 8;
|
|
*ucp = uc;
|
|
}
|
|
else
|
|
{
|
|
*(volatile unsigned long *)0xfff40074 = 0x40000000;
|
|
}
|
|
*(new+4) = *(old+4); /* Illegal instruction */
|
|
*(new+9) = *(old+9); /* Trace */
|
|
*(new+47) = *(old+47); /* Trap #15 */
|
|
|
|
if (p->brdno == 0x0162 || p->brdno == 0x172)
|
|
*(new+0x5e) = *(old+0x5e); /* ABORT switch */
|
|
else
|
|
*(new+0x6e) = *(old+0x6e); /* ABORT switch */
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t mvme16x_timer_int (int irq, void *dev_id)
|
|
{
|
|
*(volatile unsigned char *)0xfff4201b |= 8;
|
|
return tick_handler(irq, dev_id);
|
|
}
|
|
|
|
void mvme16x_sched_init (irq_handler_t timer_routine)
|
|
{
|
|
p_bdid p = &mvme_bdid;
|
|
int irq;
|
|
|
|
tick_handler = timer_routine;
|
|
/* Using PCCchip2 or MC2 chip tick timer 1 */
|
|
*(volatile unsigned long *)0xfff42008 = 0;
|
|
*(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */
|
|
*(volatile unsigned char *)0xfff42017 |= 3;
|
|
*(volatile unsigned char *)0xfff4201b = 0x16;
|
|
if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0,
|
|
"timer", mvme16x_timer_int))
|
|
panic ("Couldn't register timer int");
|
|
|
|
if (p->brdno == 0x0162 || p->brdno == 0x172)
|
|
irq = MVME162_IRQ_ABORT;
|
|
else
|
|
irq = MVME167_IRQ_ABORT;
|
|
if (request_irq(irq, mvme16x_abort_int, 0,
|
|
"abort", mvme16x_abort_int))
|
|
panic ("Couldn't register abort int");
|
|
}
|
|
|
|
|
|
/* This is always executed with interrupts disabled. */
|
|
unsigned long mvme16x_gettimeoffset (void)
|
|
{
|
|
return (*(volatile unsigned long *)0xfff42008);
|
|
}
|
|
|
|
int bcd2int (unsigned char b)
|
|
{
|
|
return ((b>>4)*10 + (b&15));
|
|
}
|
|
|
|
int mvme16x_hwclk(int op, struct rtc_time *t)
|
|
{
|
|
#warning check me!
|
|
if (!op) {
|
|
rtc->ctrl = RTC_READ;
|
|
t->tm_year = bcd2int (rtc->bcd_year);
|
|
t->tm_mon = bcd2int (rtc->bcd_mth);
|
|
t->tm_mday = bcd2int (rtc->bcd_dom);
|
|
t->tm_hour = bcd2int (rtc->bcd_hr);
|
|
t->tm_min = bcd2int (rtc->bcd_min);
|
|
t->tm_sec = bcd2int (rtc->bcd_sec);
|
|
rtc->ctrl = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int mvme16x_set_clock_mmss (unsigned long nowtime)
|
|
{
|
|
return 0;
|
|
}
|
|
|