11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * arch/m68k/mvme16x/config.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1995 Richard Hirst [richard@sleepie.demon.co.uk] 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Based on: 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * linux/amiga/config.c 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * Copyright (C) 1993 Hamish Macdonald 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public 131da177e4SLinus Torvalds * License. See the file README.legal in the main directory of this archive 141da177e4SLinus Torvalds * for more details. 151da177e4SLinus Torvalds */ 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds #include <linux/types.h> 181da177e4SLinus Torvalds #include <linux/kernel.h> 191da177e4SLinus Torvalds #include <linux/mm.h> 20813dcf7aSAlexey Dobriyan #include <linux/seq_file.h> 211da177e4SLinus Torvalds #include <linux/tty.h> 221da177e4SLinus Torvalds #include <linux/console.h> 231da177e4SLinus Torvalds #include <linux/linkage.h> 241da177e4SLinus Torvalds #include <linux/init.h> 251da177e4SLinus Torvalds #include <linux/major.h> 261da177e4SLinus Torvalds #include <linux/genhd.h> 271da177e4SLinus Torvalds #include <linux/rtc.h> 281da177e4SLinus Torvalds #include <linux/interrupt.h> 29612e484fSAdrian Bunk #include <linux/module.h> 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #include <asm/bootinfo.h> 321da177e4SLinus Torvalds #include <asm/system.h> 331da177e4SLinus Torvalds #include <asm/pgtable.h> 341da177e4SLinus Torvalds #include <asm/setup.h> 351da177e4SLinus Torvalds #include <asm/irq.h> 361da177e4SLinus Torvalds #include <asm/traps.h> 371da177e4SLinus Torvalds #include <asm/rtc.h> 381da177e4SLinus Torvalds #include <asm/machdep.h> 391da177e4SLinus Torvalds #include <asm/mvme16xhw.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds extern t_bdid mvme_bdid; 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE; 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds static void mvme16x_get_model(char *model); 4640220c1aSDavid Howells extern void mvme16x_sched_init(irq_handler_t handler); 471da177e4SLinus Torvalds extern unsigned long mvme16x_gettimeoffset (void); 481da177e4SLinus Torvalds extern int mvme16x_hwclk (int, struct rtc_time *); 491da177e4SLinus Torvalds extern int mvme16x_set_clock_mmss (unsigned long); 501da177e4SLinus Torvalds extern void mvme16x_reset (void); 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds int bcd2int (unsigned char b); 531da177e4SLinus Torvalds 54e53f276bSTorben Hohn /* Save tick handler routine pointer, will point to xtime_update() in 55e53f276bSTorben Hohn * kernel/time/timekeeping.c, called via mvme16x_process_int() */ 561da177e4SLinus Torvalds 5740220c1aSDavid Howells static irq_handler_t tick_handler; 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds unsigned short mvme16x_config; 61612e484fSAdrian Bunk EXPORT_SYMBOL(mvme16x_config); 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds int mvme16x_parse_bootinfo(const struct bi_record *bi) 651da177e4SLinus Torvalds { 661da177e4SLinus Torvalds if (bi->tag == BI_VME_TYPE || bi->tag == BI_VME_BRDINFO) 671da177e4SLinus Torvalds return 0; 681da177e4SLinus Torvalds else 691da177e4SLinus Torvalds return 1; 701da177e4SLinus Torvalds } 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds void mvme16x_reset(void) 731da177e4SLinus Torvalds { 741da177e4SLinus Torvalds printk ("\r\n\nCalled mvme16x_reset\r\n" 751da177e4SLinus Torvalds "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r"); 761da177e4SLinus Torvalds /* The string of returns is to delay the reset until the whole 771da177e4SLinus Torvalds * message is output. Assert reset bit in GCSR */ 781da177e4SLinus Torvalds *(volatile char *)0xfff40107 = 0x80; 791da177e4SLinus Torvalds } 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds static void mvme16x_get_model(char *model) 821da177e4SLinus Torvalds { 831da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 841da177e4SLinus Torvalds char suf[4]; 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds suf[1] = p->brdsuffix[0]; 871da177e4SLinus Torvalds suf[2] = p->brdsuffix[1]; 881da177e4SLinus Torvalds suf[3] = '\0'; 891da177e4SLinus Torvalds suf[0] = suf[1] ? '-' : '\0'; 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds sprintf(model, "Motorola MVME%x%s", p->brdno, suf); 921da177e4SLinus Torvalds } 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds 95813dcf7aSAlexey Dobriyan static void mvme16x_get_hardware_list(struct seq_file *m) 961da177e4SLinus Torvalds { 971da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x0172) 1001da177e4SLinus Torvalds { 1011da177e4SLinus Torvalds unsigned char rev = *(unsigned char *)MVME162_VERSION_REG; 1021da177e4SLinus Torvalds 103813dcf7aSAlexey Dobriyan seq_printf (m, "VMEchip2 %spresent\n", 1041da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : ""); 105813dcf7aSAlexey Dobriyan seq_printf (m, "SCSI interface %spresent\n", 1061da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : ""); 107813dcf7aSAlexey Dobriyan seq_printf (m, "Ethernet i/f %spresent\n", 1081da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : ""); 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds } 1111da177e4SLinus Torvalds 112200a3d35SRoman Zippel /* 113200a3d35SRoman Zippel * This function is called during kernel startup to initialize 114200a3d35SRoman Zippel * the mvme16x IRQ handling routines. Should probably ensure 115200a3d35SRoman Zippel * that the base vectors for the VMEChip2 and PCCChip2 are valid. 116200a3d35SRoman Zippel */ 117200a3d35SRoman Zippel 11866a3f820SAl Viro static void __init mvme16x_init_IRQ (void) 119200a3d35SRoman Zippel { 120f30a6484SGeert Uytterhoeven m68k_setup_user_interrupt(VEC_USER, 192); 121200a3d35SRoman Zippel } 1221da177e4SLinus Torvalds 1231da177e4SLinus Torvalds #define pcc2chip ((volatile u_char *)0xfff42000) 1241da177e4SLinus Torvalds #define PccSCCMICR 0x1d 1251da177e4SLinus Torvalds #define PccSCCTICR 0x1e 1261da177e4SLinus Torvalds #define PccSCCRICR 0x1f 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds void __init config_mvme16x(void) 1291da177e4SLinus Torvalds { 1301da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 1311da177e4SLinus Torvalds char id[40]; 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds mach_max_dma_address = 0xffffffff; 1341da177e4SLinus Torvalds mach_sched_init = mvme16x_sched_init; 1351da177e4SLinus Torvalds mach_init_IRQ = mvme16x_init_IRQ; 1361da177e4SLinus Torvalds mach_gettimeoffset = mvme16x_gettimeoffset; 1371da177e4SLinus Torvalds mach_hwclk = mvme16x_hwclk; 1381da177e4SLinus Torvalds mach_set_clock_mmss = mvme16x_set_clock_mmss; 1391da177e4SLinus Torvalds mach_reset = mvme16x_reset; 1401da177e4SLinus Torvalds mach_get_model = mvme16x_get_model; 1411da177e4SLinus Torvalds mach_get_hardware_list = mvme16x_get_hardware_list; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds /* Report board revision */ 1441da177e4SLinus Torvalds 1451da177e4SLinus Torvalds if (strncmp("BDID", p->bdid, 4)) 1461da177e4SLinus Torvalds { 1471da177e4SLinus Torvalds printk ("\n\nBug call .BRD_ID returned garbage - giving up\n\n"); 1481da177e4SLinus Torvalds while (1) 1491da177e4SLinus Torvalds ; 1501da177e4SLinus Torvalds } 1511da177e4SLinus Torvalds /* Board type is only set by newer versions of vmelilo/tftplilo */ 1521da177e4SLinus Torvalds if (vme_brdtype == 0) 1531da177e4SLinus Torvalds vme_brdtype = p->brdno; 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds mvme16x_get_model(id); 1561da177e4SLinus Torvalds printk ("\nBRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id, p->rev>>4, 1571da177e4SLinus Torvalds p->rev&0xf, p->yr, p->mth, p->day); 1581da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 1591da177e4SLinus Torvalds { 1601da177e4SLinus Torvalds unsigned char rev = *(unsigned char *)MVME162_VERSION_REG; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA; 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds printk ("MVME%x Hardware status:\n", p->brdno); 1651da177e4SLinus Torvalds printk (" CPU Type 68%s040\n", 1661da177e4SLinus Torvalds rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC"); 1671da177e4SLinus Torvalds printk (" CPU clock %dMHz\n", 1681da177e4SLinus Torvalds rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25); 1691da177e4SLinus Torvalds printk (" VMEchip2 %spresent\n", 1701da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : ""); 1711da177e4SLinus Torvalds printk (" SCSI interface %spresent\n", 1721da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : ""); 1731da177e4SLinus Torvalds printk (" Ethernet interface %spresent\n", 1741da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : ""); 1751da177e4SLinus Torvalds } 1761da177e4SLinus Torvalds else 1771da177e4SLinus Torvalds { 1781da177e4SLinus Torvalds mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401; 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds /* Dont allow any interrupts from the CD2401 until the interrupt */ 1811da177e4SLinus Torvalds /* handlers are installed */ 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds pcc2chip[PccSCCMICR] = 0x10; 1841da177e4SLinus Torvalds pcc2chip[PccSCCTICR] = 0x10; 1851da177e4SLinus Torvalds pcc2chip[PccSCCRICR] = 0x10; 1861da177e4SLinus Torvalds } 1871da177e4SLinus Torvalds } 1881da177e4SLinus Torvalds 1892850bc27SAl Viro static irqreturn_t mvme16x_abort_int (int irq, void *dev_id) 1901da177e4SLinus Torvalds { 1911da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 1921da177e4SLinus Torvalds unsigned long *new = (unsigned long *)vectors; 1931da177e4SLinus Torvalds unsigned long *old = (unsigned long *)0xffe00000; 1941da177e4SLinus Torvalds volatile unsigned char uc, *ucp; 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 1971da177e4SLinus Torvalds { 1981da177e4SLinus Torvalds ucp = (volatile unsigned char *)0xfff42043; 1991da177e4SLinus Torvalds uc = *ucp | 8; 2001da177e4SLinus Torvalds *ucp = uc; 2011da177e4SLinus Torvalds } 2021da177e4SLinus Torvalds else 2031da177e4SLinus Torvalds { 2041da177e4SLinus Torvalds *(volatile unsigned long *)0xfff40074 = 0x40000000; 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds *(new+4) = *(old+4); /* Illegal instruction */ 2071da177e4SLinus Torvalds *(new+9) = *(old+9); /* Trace */ 2081da177e4SLinus Torvalds *(new+47) = *(old+47); /* Trap #15 */ 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 2111da177e4SLinus Torvalds *(new+0x5e) = *(old+0x5e); /* ABORT switch */ 2121da177e4SLinus Torvalds else 2131da177e4SLinus Torvalds *(new+0x6e) = *(old+0x6e); /* ABORT switch */ 2141da177e4SLinus Torvalds return IRQ_HANDLED; 2151da177e4SLinus Torvalds } 2161da177e4SLinus Torvalds 2172850bc27SAl Viro static irqreturn_t mvme16x_timer_int (int irq, void *dev_id) 2181da177e4SLinus Torvalds { 2191da177e4SLinus Torvalds *(volatile unsigned char *)0xfff4201b |= 8; 2202850bc27SAl Viro return tick_handler(irq, dev_id); 2211da177e4SLinus Torvalds } 2221da177e4SLinus Torvalds 22340220c1aSDavid Howells void mvme16x_sched_init (irq_handler_t timer_routine) 2241da177e4SLinus Torvalds { 2251da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 2261da177e4SLinus Torvalds int irq; 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds tick_handler = timer_routine; 2291da177e4SLinus Torvalds /* Using PCCchip2 or MC2 chip tick timer 1 */ 2301da177e4SLinus Torvalds *(volatile unsigned long *)0xfff42008 = 0; 2311da177e4SLinus Torvalds *(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */ 2321da177e4SLinus Torvalds *(volatile unsigned char *)0xfff42017 |= 3; 2331da177e4SLinus Torvalds *(volatile unsigned char *)0xfff4201b = 0x16; 2341da177e4SLinus Torvalds if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0, 2351da177e4SLinus Torvalds "timer", mvme16x_timer_int)) 2361da177e4SLinus Torvalds panic ("Couldn't register timer int"); 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 2391da177e4SLinus Torvalds irq = MVME162_IRQ_ABORT; 2401da177e4SLinus Torvalds else 2411da177e4SLinus Torvalds irq = MVME167_IRQ_ABORT; 2421da177e4SLinus Torvalds if (request_irq(irq, mvme16x_abort_int, 0, 2431da177e4SLinus Torvalds "abort", mvme16x_abort_int)) 2441da177e4SLinus Torvalds panic ("Couldn't register abort int"); 2451da177e4SLinus Torvalds } 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds /* This is always executed with interrupts disabled. */ 2491da177e4SLinus Torvalds unsigned long mvme16x_gettimeoffset (void) 2501da177e4SLinus Torvalds { 2511da177e4SLinus Torvalds return (*(volatile unsigned long *)0xfff42008); 2521da177e4SLinus Torvalds } 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds int bcd2int (unsigned char b) 2551da177e4SLinus Torvalds { 2561da177e4SLinus Torvalds return ((b>>4)*10 + (b&15)); 2571da177e4SLinus Torvalds } 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds int mvme16x_hwclk(int op, struct rtc_time *t) 2601da177e4SLinus Torvalds { 2611da177e4SLinus Torvalds #warning check me! 2621da177e4SLinus Torvalds if (!op) { 2631da177e4SLinus Torvalds rtc->ctrl = RTC_READ; 2641da177e4SLinus Torvalds t->tm_year = bcd2int (rtc->bcd_year); 2651da177e4SLinus Torvalds t->tm_mon = bcd2int (rtc->bcd_mth); 2661da177e4SLinus Torvalds t->tm_mday = bcd2int (rtc->bcd_dom); 2671da177e4SLinus Torvalds t->tm_hour = bcd2int (rtc->bcd_hr); 2681da177e4SLinus Torvalds t->tm_min = bcd2int (rtc->bcd_min); 2691da177e4SLinus Torvalds t->tm_sec = bcd2int (rtc->bcd_sec); 2701da177e4SLinus Torvalds rtc->ctrl = 0; 2711da177e4SLinus Torvalds } 2721da177e4SLinus Torvalds return 0; 2731da177e4SLinus Torvalds } 2741da177e4SLinus Torvalds 2751da177e4SLinus Torvalds int mvme16x_set_clock_mmss (unsigned long nowtime) 2761da177e4SLinus Torvalds { 2771da177e4SLinus Torvalds return 0; 2781da177e4SLinus Torvalds } 2791da177e4SLinus Torvalds 280