config.c
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上传日期:2013-04-10
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- /*
- * 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/tty.h>
- #include <linux/console.h>
- #include <linux/linkage.h>
- #include <linux/init.h>
- #include <linux/major.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;
- extern void mvme16x_process_int (int level, struct pt_regs *regs);
- extern void mvme16x_init_IRQ (void);
- extern void mvme16x_free_irq (unsigned int, void *);
- extern int mvme16x_get_irq_list (char *);
- extern void mvme16x_enable_irq (unsigned int);
- extern void mvme16x_disable_irq (unsigned int);
- static void mvme16x_get_model(char *model);
- static int mvme16x_get_hardware_list(char *buffer);
- extern int mvme16x_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id);
- extern void mvme16x_sched_init(void (*handler)(int, void *, struct pt_regs *));
- extern int mvme16x_keyb_init(void);
- extern int mvme16x_kbdrate (struct kbd_repeat *);
- extern unsigned long mvme16x_gettimeoffset (void);
- extern void mvme16x_gettod (int *year, int *mon, int *day, int *hour,
- int *min, int *sec);
- extern int mvme16x_hwclk (int, struct rtc_time *);
- extern int mvme16x_set_clock_mmss (unsigned long);
- extern void mvme16x_check_partition (struct gendisk *hd, unsigned int dev);
- extern void mvme16x_mksound( unsigned int count, unsigned int ticks );
- 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 void (*tick_handler)(int, void *, struct pt_regs *);
- unsigned short 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;
- }
- int mvme16x_kbdrate (struct kbd_repeat *k)
- {
- return 0;
- }
- void mvme16x_mksound( unsigned int count, unsigned int ticks )
- {
- }
- void mvme16x_reset()
- {
- printk ("rnnCalled mvme16x_resetrn"
- "rrrrrrrrrrrrrrrrrr");
- /* 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] = ' ';
- suf[0] = suf[1] ? '-' : ' ';
- sprintf(model, "Motorola MVME%x%s", p->brdno, suf);
- }
- static int mvme16x_get_hardware_list(char *buffer)
- {
- p_bdid p = &mvme_bdid;
- int len = 0;
- if (p->brdno == 0x0162 || p->brdno == 0x0172)
- {
- unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
- len += sprintf (buffer+len, "VMEchip2 %spresentn",
- rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
- len += sprintf (buffer+len, "SCSI interface %spresentn",
- rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
- len += sprintf (buffer+len, "Ethernet i/f %spresentn",
- rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
- }
- else
- *buffer = ' ';
- return (len);
- }
- #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;
- #ifdef CONFIG_VT
- mach_keyb_init = mvme16x_keyb_init;
- mach_kbdrate = mvme16x_kbdrate;
- /* kd_mksound = mvme16x_mksound; */
- #endif
- mach_init_IRQ = mvme16x_init_IRQ;
- mach_gettimeoffset = mvme16x_gettimeoffset;
- mach_gettod = mvme16x_gettod;
- mach_hwclk = mvme16x_hwclk;
- mach_set_clock_mmss = mvme16x_set_clock_mmss;
- mach_reset = mvme16x_reset;
- mach_free_irq = mvme16x_free_irq;
- mach_process_int = mvme16x_process_int;
- mach_get_irq_list = mvme16x_get_irq_list;
- mach_request_irq = mvme16x_request_irq;
- enable_irq = mvme16x_enable_irq;
- disable_irq = mvme16x_disable_irq;
- mach_get_model = mvme16x_get_model;
- mach_get_hardware_list = mvme16x_get_hardware_list;
- /* Report board revision */
- if (strncmp("BDID", p->bdid, 4))
- {
- printk ("nnBug call .BRD_ID returned garbage - giving upnn");
- 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/%02xn", 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%s040n",
- rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC");
- printk (" CPU clock %dMHzn",
- rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25);
- printk (" VMEchip2 %spresentn",
- rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
- printk (" SCSI interface %spresentn",
- rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
- printk (" Ethernet interface %spresentn",
- 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 void mvme16x_abort_int (int irq, void *dev_id, struct pt_regs *fp)
- {
- 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 */
- }
- static void mvme16x_timer_int (int irq, void *dev_id, struct pt_regs *fp)
- {
- *(volatile unsigned char *)0xfff4201b |= 8;
- tick_handler(irq, dev_id, fp);
- }
- void mvme16x_sched_init (void (*timer_routine)(int, void *, struct pt_regs *))
- {
- 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);
- }
- extern void mvme16x_gettod (int *year, int *mon, int *day, int *hour,
- int *min, int *sec)
- {
- rtc->ctrl = RTC_READ;
- *year = bcd2int (rtc->bcd_year);
- *mon = bcd2int (rtc->bcd_mth);
- *day = bcd2int (rtc->bcd_dom);
- *hour = bcd2int (rtc->bcd_hr);
- *min = bcd2int (rtc->bcd_min);
- *sec = bcd2int (rtc->bcd_sec);
- rtc->ctrl = 0;
- }
- int bcd2int (unsigned char b)
- {
- return ((b>>4)*10 + (b&15));
- }
- int mvme16x_hwclk(int op, struct rtc_time *t)
- {
- return 0;
- }
- int mvme16x_set_clock_mmss (unsigned long nowtime)
- {
- return 0;
- }
- int mvme16x_keyb_init (void)
- {
- return 0;
- }