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Diffstat (limited to 'arch/m68k/mvme16x/config.c')
-rw-r--r--arch/m68k/mvme16x/config.c418
1 files changed, 418 insertions, 0 deletions
diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
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index 000000000..a53803cc6
--- /dev/null
+++ b/arch/m68k/mvme16x/config.c
@@ -0,0 +1,418 @@
+/*
+ * 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/bootinfo-vme.h>
+#include <asm/byteorder.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 u32 mvme16x_gettimeoffset(void);
+extern int mvme16x_hwclk (int, struct rtc_time *);
+extern int mvme16x_set_clock_mmss (unsigned long);
+extern void mvme16x_reset (void);
+
+int bcd2int (unsigned char b);
+
+/* Save tick handler routine pointer, will point to xtime_update() in
+ * kernel/time/timekeeping.c, called via mvme16x_process_int() */
+
+static irq_handler_t tick_handler;
+
+
+unsigned short mvme16x_config;
+EXPORT_SYMBOL(mvme16x_config);
+
+
+int __init mvme16x_parse_bootinfo(const struct bi_record *bi)
+{
+ uint16_t tag = be16_to_cpu(bi->tag);
+ if (tag == BI_VME_TYPE || 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", be16_to_cpu(p->brdno), suf);
+}
+
+
+static void mvme16x_get_hardware_list(struct seq_file *m)
+{
+ uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
+
+ if (brdno == 0x0162 || 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);
+}
+
+#define pcc2chip ((volatile u_char *)0xfff42000)
+#define PccSCCMICR 0x1d
+#define PccSCCTICR 0x1e
+#define PccSCCRICR 0x1f
+#define PccTPIACKR 0x25
+
+#ifdef CONFIG_EARLY_PRINTK
+
+/**** cd2401 registers ****/
+#define CD2401_ADDR (0xfff45000)
+
+#define CyGFRCR (0x81)
+#define CyCCR (0x13)
+#define CyCLR_CHAN (0x40)
+#define CyINIT_CHAN (0x20)
+#define CyCHIP_RESET (0x10)
+#define CyENB_XMTR (0x08)
+#define CyDIS_XMTR (0x04)
+#define CyENB_RCVR (0x02)
+#define CyDIS_RCVR (0x01)
+#define CyCAR (0xee)
+#define CyIER (0x11)
+#define CyMdmCh (0x80)
+#define CyRxExc (0x20)
+#define CyRxData (0x08)
+#define CyTxMpty (0x02)
+#define CyTxRdy (0x01)
+#define CyLICR (0x26)
+#define CyRISR (0x89)
+#define CyTIMEOUT (0x80)
+#define CySPECHAR (0x70)
+#define CyOVERRUN (0x08)
+#define CyPARITY (0x04)
+#define CyFRAME (0x02)
+#define CyBREAK (0x01)
+#define CyREOIR (0x84)
+#define CyTEOIR (0x85)
+#define CyMEOIR (0x86)
+#define CyNOTRANS (0x08)
+#define CyRFOC (0x30)
+#define CyRDR (0xf8)
+#define CyTDR (0xf8)
+#define CyMISR (0x8b)
+#define CyRISR (0x89)
+#define CyTISR (0x8a)
+#define CyMSVR1 (0xde)
+#define CyMSVR2 (0xdf)
+#define CyDSR (0x80)
+#define CyDCD (0x40)
+#define CyCTS (0x20)
+#define CyDTR (0x02)
+#define CyRTS (0x01)
+#define CyRTPRL (0x25)
+#define CyRTPRH (0x24)
+#define CyCOR1 (0x10)
+#define CyPARITY_NONE (0x00)
+#define CyPARITY_E (0x40)
+#define CyPARITY_O (0xC0)
+#define Cy_5_BITS (0x04)
+#define Cy_6_BITS (0x05)
+#define Cy_7_BITS (0x06)
+#define Cy_8_BITS (0x07)
+#define CyCOR2 (0x17)
+#define CyETC (0x20)
+#define CyCtsAE (0x02)
+#define CyCOR3 (0x16)
+#define Cy_1_STOP (0x02)
+#define Cy_2_STOP (0x04)
+#define CyCOR4 (0x15)
+#define CyREC_FIFO (0x0F) /* Receive FIFO threshold */
+#define CyCOR5 (0x14)
+#define CyCOR6 (0x18)
+#define CyCOR7 (0x07)
+#define CyRBPR (0xcb)
+#define CyRCOR (0xc8)
+#define CyTBPR (0xc3)
+#define CyTCOR (0xc0)
+#define CySCHR1 (0x1f)
+#define CySCHR2 (0x1e)
+#define CyTPR (0xda)
+#define CyPILR1 (0xe3)
+#define CyPILR2 (0xe0)
+#define CyPILR3 (0xe1)
+#define CyCMR (0x1b)
+#define CyASYNC (0x02)
+#define CyLICR (0x26)
+#define CyLIVR (0x09)
+#define CySCRL (0x23)
+#define CySCRH (0x22)
+#define CyTFTC (0x80)
+
+void mvme16x_cons_write(struct console *co, const char *str, unsigned count)
+{
+ volatile unsigned char *base_addr = (u_char *)CD2401_ADDR;
+ volatile u_char sink;
+ u_char ier;
+ int port;
+ u_char do_lf = 0;
+ int i = 0;
+
+ /* Ensure transmitter is enabled! */
+
+ port = 0;
+ base_addr[CyCAR] = (u_char)port;
+ while (base_addr[CyCCR])
+ ;
+ base_addr[CyCCR] = CyENB_XMTR;
+
+ ier = base_addr[CyIER];
+ base_addr[CyIER] = CyTxMpty;
+
+ while (1) {
+ if (pcc2chip[PccSCCTICR] & 0x20)
+ {
+ /* We have a Tx int. Acknowledge it */
+ sink = pcc2chip[PccTPIACKR];
+ if ((base_addr[CyLICR] >> 2) == port) {
+ if (i == count) {
+ /* Last char of string is now output */
+ base_addr[CyTEOIR] = CyNOTRANS;
+ break;
+ }
+ if (do_lf) {
+ base_addr[CyTDR] = '\n';
+ str++;
+ i++;
+ do_lf = 0;
+ }
+ else if (*str == '\n') {
+ base_addr[CyTDR] = '\r';
+ do_lf = 1;
+ }
+ else {
+ base_addr[CyTDR] = *str++;
+ i++;
+ }
+ base_addr[CyTEOIR] = 0;
+ }
+ else
+ base_addr[CyTEOIR] = CyNOTRANS;
+ }
+ }
+
+ base_addr[CyIER] = ier;
+}
+
+#endif
+
+void __init config_mvme16x(void)
+{
+ p_bdid p = &mvme_bdid;
+ char id[40];
+ uint16_t brdno = be16_to_cpu(p->brdno);
+
+ mach_max_dma_address = 0xffffffff;
+ mach_sched_init = mvme16x_sched_init;
+ mach_init_IRQ = mvme16x_init_IRQ;
+ arch_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 = 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 (brdno == 0x0162 || brdno == 0x172)
+ {
+ unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
+
+ mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA;
+
+ printk ("MVME%x Hardware status:\n", 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;
+ }
+}
+
+static irqreturn_t mvme16x_abort_int (int irq, void *dev_id)
+{
+ unsigned long *new = (unsigned long *)vectors;
+ unsigned long *old = (unsigned long *)0xffe00000;
+ volatile unsigned char uc, *ucp;
+ uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
+
+ if (brdno == 0x0162 || 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 (brdno == 0x0162 || 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)
+{
+ uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
+ 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 (brdno == 0x0162 || 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. */
+u32 mvme16x_gettimeoffset(void)
+{
+ return (*(volatile u32 *)0xfff42008) * 1000;
+}
+
+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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