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Diffstat (limited to 'arch/m68k/mvme16x/config.c')
-rw-r--r--arch/m68k/mvme16x/config.c286
1 files changed, 286 insertions, 0 deletions
diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
new file mode 100644
index 00000000000..26ce81c1337
--- /dev/null
+++ b/arch/m68k/mvme16x/config.c
@@ -0,0 +1,286 @@
+/*
+ * 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 <linux/genhd.h>
+#include <linux/rtc.h>
+#include <linux/interrupt.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 irqreturn_t 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 show_mvme16x_interrupts (struct seq_file *, void *);
+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, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id);
+extern void mvme16x_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+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 irqreturn_t (*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;
+}
+
+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 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 %spresent\n",
+ rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
+ len += sprintf (buffer+len, "SCSI interface %spresent\n",
+ rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
+ len += sprintf (buffer+len, "Ethernet i/f %spresent\n",
+ rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
+ }
+ else
+ *buffer = '\0';
+
+ 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;
+ 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_free_irq = mvme16x_free_irq;
+ mach_process_int = mvme16x_process_int;
+ mach_get_irq_list = show_mvme16x_interrupts;
+ 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 ("\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, 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 */
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mvme16x_timer_int (int irq, void *dev_id, struct pt_regs *fp)
+{
+ *(volatile unsigned char *)0xfff4201b |= 8;
+ return tick_handler(irq, dev_id, fp);
+}
+
+void mvme16x_sched_init (irqreturn_t (*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);
+}
+
+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;
+}
+
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