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> 201da177e4SLinus Torvalds #include <linux/tty.h> 211da177e4SLinus Torvalds #include <linux/console.h> 221da177e4SLinus Torvalds #include <linux/linkage.h> 231da177e4SLinus Torvalds #include <linux/init.h> 241da177e4SLinus Torvalds #include <linux/major.h> 251da177e4SLinus Torvalds #include <linux/genhd.h> 261da177e4SLinus Torvalds #include <linux/rtc.h> 271da177e4SLinus Torvalds #include <linux/interrupt.h> 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds #include <asm/bootinfo.h> 301da177e4SLinus Torvalds #include <asm/system.h> 311da177e4SLinus Torvalds #include <asm/pgtable.h> 321da177e4SLinus Torvalds #include <asm/setup.h> 331da177e4SLinus Torvalds #include <asm/irq.h> 341da177e4SLinus Torvalds #include <asm/traps.h> 351da177e4SLinus Torvalds #include <asm/rtc.h> 361da177e4SLinus Torvalds #include <asm/machdep.h> 371da177e4SLinus Torvalds #include <asm/mvme16xhw.h> 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds extern t_bdid mvme_bdid; 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE; 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds static void mvme16x_get_model(char *model); 441da177e4SLinus Torvalds static int mvme16x_get_hardware_list(char *buffer); 452850bc27SAl Viro extern void mvme16x_sched_init(irqreturn_t (*handler)(int, void *)); 461da177e4SLinus Torvalds extern unsigned long mvme16x_gettimeoffset (void); 471da177e4SLinus Torvalds extern int mvme16x_hwclk (int, struct rtc_time *); 481da177e4SLinus Torvalds extern int mvme16x_set_clock_mmss (unsigned long); 491da177e4SLinus Torvalds extern void mvme16x_reset (void); 501da177e4SLinus Torvalds extern void mvme16x_waitbut(void); 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds int bcd2int (unsigned char b); 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds /* Save tick handler routine pointer, will point to do_timer() in 551da177e4SLinus Torvalds * kernel/sched.c, called via mvme16x_process_int() */ 561da177e4SLinus Torvalds 572850bc27SAl Viro static irqreturn_t (*tick_handler)(int, void *); 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds unsigned short mvme16x_config; 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds int mvme16x_parse_bootinfo(const struct bi_record *bi) 641da177e4SLinus Torvalds { 651da177e4SLinus Torvalds if (bi->tag == BI_VME_TYPE || bi->tag == BI_VME_BRDINFO) 661da177e4SLinus Torvalds return 0; 671da177e4SLinus Torvalds else 681da177e4SLinus Torvalds return 1; 691da177e4SLinus Torvalds } 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds void mvme16x_reset(void) 721da177e4SLinus Torvalds { 731da177e4SLinus Torvalds printk ("\r\n\nCalled mvme16x_reset\r\n" 741da177e4SLinus Torvalds "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r"); 751da177e4SLinus Torvalds /* The string of returns is to delay the reset until the whole 761da177e4SLinus Torvalds * message is output. Assert reset bit in GCSR */ 771da177e4SLinus Torvalds *(volatile char *)0xfff40107 = 0x80; 781da177e4SLinus Torvalds } 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds static void mvme16x_get_model(char *model) 811da177e4SLinus Torvalds { 821da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 831da177e4SLinus Torvalds char suf[4]; 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds suf[1] = p->brdsuffix[0]; 861da177e4SLinus Torvalds suf[2] = p->brdsuffix[1]; 871da177e4SLinus Torvalds suf[3] = '\0'; 881da177e4SLinus Torvalds suf[0] = suf[1] ? '-' : '\0'; 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds sprintf(model, "Motorola MVME%x%s", p->brdno, suf); 911da177e4SLinus Torvalds } 921da177e4SLinus Torvalds 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds static int mvme16x_get_hardware_list(char *buffer) 951da177e4SLinus Torvalds { 961da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 971da177e4SLinus Torvalds int len = 0; 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 1031da177e4SLinus Torvalds len += sprintf (buffer+len, "VMEchip2 %spresent\n", 1041da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : ""); 1051da177e4SLinus Torvalds len += sprintf (buffer+len, "SCSI interface %spresent\n", 1061da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : ""); 1071da177e4SLinus Torvalds len += sprintf (buffer+len, "Ethernet i/f %spresent\n", 1081da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : ""); 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds else 1111da177e4SLinus Torvalds *buffer = '\0'; 1121da177e4SLinus Torvalds 1131da177e4SLinus Torvalds return (len); 1141da177e4SLinus Torvalds } 1151da177e4SLinus Torvalds 116200a3d35SRoman Zippel /* 117200a3d35SRoman Zippel * This function is called during kernel startup to initialize 118200a3d35SRoman Zippel * the mvme16x IRQ handling routines. Should probably ensure 119200a3d35SRoman Zippel * that the base vectors for the VMEChip2 and PCCChip2 are valid. 120200a3d35SRoman Zippel */ 121200a3d35SRoman Zippel 122200a3d35SRoman Zippel static void mvme16x_init_IRQ (void) 123200a3d35SRoman Zippel { 124200a3d35SRoman Zippel m68k_setup_user_interrupt(VEC_USER, 192, NULL); 125200a3d35SRoman Zippel } 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds #define pcc2chip ((volatile u_char *)0xfff42000) 1281da177e4SLinus Torvalds #define PccSCCMICR 0x1d 1291da177e4SLinus Torvalds #define PccSCCTICR 0x1e 1301da177e4SLinus Torvalds #define PccSCCRICR 0x1f 1311da177e4SLinus Torvalds 1321da177e4SLinus Torvalds void __init config_mvme16x(void) 1331da177e4SLinus Torvalds { 1341da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 1351da177e4SLinus Torvalds char id[40]; 1361da177e4SLinus Torvalds 1371da177e4SLinus Torvalds mach_max_dma_address = 0xffffffff; 1381da177e4SLinus Torvalds mach_sched_init = mvme16x_sched_init; 1391da177e4SLinus Torvalds mach_init_IRQ = mvme16x_init_IRQ; 1401da177e4SLinus Torvalds mach_gettimeoffset = mvme16x_gettimeoffset; 1411da177e4SLinus Torvalds mach_hwclk = mvme16x_hwclk; 1421da177e4SLinus Torvalds mach_set_clock_mmss = mvme16x_set_clock_mmss; 1431da177e4SLinus Torvalds mach_reset = mvme16x_reset; 1441da177e4SLinus Torvalds mach_get_model = mvme16x_get_model; 1451da177e4SLinus Torvalds mach_get_hardware_list = mvme16x_get_hardware_list; 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds /* Report board revision */ 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds if (strncmp("BDID", p->bdid, 4)) 1501da177e4SLinus Torvalds { 1511da177e4SLinus Torvalds printk ("\n\nBug call .BRD_ID returned garbage - giving up\n\n"); 1521da177e4SLinus Torvalds while (1) 1531da177e4SLinus Torvalds ; 1541da177e4SLinus Torvalds } 1551da177e4SLinus Torvalds /* Board type is only set by newer versions of vmelilo/tftplilo */ 1561da177e4SLinus Torvalds if (vme_brdtype == 0) 1571da177e4SLinus Torvalds vme_brdtype = p->brdno; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds mvme16x_get_model(id); 1601da177e4SLinus Torvalds printk ("\nBRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id, p->rev>>4, 1611da177e4SLinus Torvalds p->rev&0xf, p->yr, p->mth, p->day); 1621da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 1631da177e4SLinus Torvalds { 1641da177e4SLinus Torvalds unsigned char rev = *(unsigned char *)MVME162_VERSION_REG; 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA; 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds printk ("MVME%x Hardware status:\n", p->brdno); 1691da177e4SLinus Torvalds printk (" CPU Type 68%s040\n", 1701da177e4SLinus Torvalds rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC"); 1711da177e4SLinus Torvalds printk (" CPU clock %dMHz\n", 1721da177e4SLinus Torvalds rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25); 1731da177e4SLinus Torvalds printk (" VMEchip2 %spresent\n", 1741da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : ""); 1751da177e4SLinus Torvalds printk (" SCSI interface %spresent\n", 1761da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : ""); 1771da177e4SLinus Torvalds printk (" Ethernet interface %spresent\n", 1781da177e4SLinus Torvalds rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : ""); 1791da177e4SLinus Torvalds } 1801da177e4SLinus Torvalds else 1811da177e4SLinus Torvalds { 1821da177e4SLinus Torvalds mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401; 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds /* Dont allow any interrupts from the CD2401 until the interrupt */ 1851da177e4SLinus Torvalds /* handlers are installed */ 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds pcc2chip[PccSCCMICR] = 0x10; 1881da177e4SLinus Torvalds pcc2chip[PccSCCTICR] = 0x10; 1891da177e4SLinus Torvalds pcc2chip[PccSCCRICR] = 0x10; 1901da177e4SLinus Torvalds } 1911da177e4SLinus Torvalds } 1921da177e4SLinus Torvalds 1932850bc27SAl Viro static irqreturn_t mvme16x_abort_int (int irq, void *dev_id) 1941da177e4SLinus Torvalds { 1951da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 1961da177e4SLinus Torvalds unsigned long *new = (unsigned long *)vectors; 1971da177e4SLinus Torvalds unsigned long *old = (unsigned long *)0xffe00000; 1981da177e4SLinus Torvalds volatile unsigned char uc, *ucp; 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 2011da177e4SLinus Torvalds { 2021da177e4SLinus Torvalds ucp = (volatile unsigned char *)0xfff42043; 2031da177e4SLinus Torvalds uc = *ucp | 8; 2041da177e4SLinus Torvalds *ucp = uc; 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds else 2071da177e4SLinus Torvalds { 2081da177e4SLinus Torvalds *(volatile unsigned long *)0xfff40074 = 0x40000000; 2091da177e4SLinus Torvalds } 2101da177e4SLinus Torvalds *(new+4) = *(old+4); /* Illegal instruction */ 2111da177e4SLinus Torvalds *(new+9) = *(old+9); /* Trace */ 2121da177e4SLinus Torvalds *(new+47) = *(old+47); /* Trap #15 */ 2131da177e4SLinus Torvalds 2141da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 2151da177e4SLinus Torvalds *(new+0x5e) = *(old+0x5e); /* ABORT switch */ 2161da177e4SLinus Torvalds else 2171da177e4SLinus Torvalds *(new+0x6e) = *(old+0x6e); /* ABORT switch */ 2181da177e4SLinus Torvalds return IRQ_HANDLED; 2191da177e4SLinus Torvalds } 2201da177e4SLinus Torvalds 2212850bc27SAl Viro static irqreturn_t mvme16x_timer_int (int irq, void *dev_id) 2221da177e4SLinus Torvalds { 2231da177e4SLinus Torvalds *(volatile unsigned char *)0xfff4201b |= 8; 2242850bc27SAl Viro return tick_handler(irq, dev_id); 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds 2272850bc27SAl Viro void mvme16x_sched_init (irqreturn_t (*timer_routine)(int, void *)) 2281da177e4SLinus Torvalds { 2291da177e4SLinus Torvalds p_bdid p = &mvme_bdid; 2301da177e4SLinus Torvalds int irq; 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds tick_handler = timer_routine; 2331da177e4SLinus Torvalds /* Using PCCchip2 or MC2 chip tick timer 1 */ 2341da177e4SLinus Torvalds *(volatile unsigned long *)0xfff42008 = 0; 2351da177e4SLinus Torvalds *(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */ 2361da177e4SLinus Torvalds *(volatile unsigned char *)0xfff42017 |= 3; 2371da177e4SLinus Torvalds *(volatile unsigned char *)0xfff4201b = 0x16; 2381da177e4SLinus Torvalds if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0, 2391da177e4SLinus Torvalds "timer", mvme16x_timer_int)) 2401da177e4SLinus Torvalds panic ("Couldn't register timer int"); 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds if (p->brdno == 0x0162 || p->brdno == 0x172) 2431da177e4SLinus Torvalds irq = MVME162_IRQ_ABORT; 2441da177e4SLinus Torvalds else 2451da177e4SLinus Torvalds irq = MVME167_IRQ_ABORT; 2461da177e4SLinus Torvalds if (request_irq(irq, mvme16x_abort_int, 0, 2471da177e4SLinus Torvalds "abort", mvme16x_abort_int)) 2481da177e4SLinus Torvalds panic ("Couldn't register abort int"); 2491da177e4SLinus Torvalds } 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds /* This is always executed with interrupts disabled. */ 2531da177e4SLinus Torvalds unsigned long mvme16x_gettimeoffset (void) 2541da177e4SLinus Torvalds { 2551da177e4SLinus Torvalds return (*(volatile unsigned long *)0xfff42008); 2561da177e4SLinus Torvalds } 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds int bcd2int (unsigned char b) 2591da177e4SLinus Torvalds { 2601da177e4SLinus Torvalds return ((b>>4)*10 + (b&15)); 2611da177e4SLinus Torvalds } 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds int mvme16x_hwclk(int op, struct rtc_time *t) 2641da177e4SLinus Torvalds { 2651da177e4SLinus Torvalds #warning check me! 2661da177e4SLinus Torvalds if (!op) { 2671da177e4SLinus Torvalds rtc->ctrl = RTC_READ; 2681da177e4SLinus Torvalds t->tm_year = bcd2int (rtc->bcd_year); 2691da177e4SLinus Torvalds t->tm_mon = bcd2int (rtc->bcd_mth); 2701da177e4SLinus Torvalds t->tm_mday = bcd2int (rtc->bcd_dom); 2711da177e4SLinus Torvalds t->tm_hour = bcd2int (rtc->bcd_hr); 2721da177e4SLinus Torvalds t->tm_min = bcd2int (rtc->bcd_min); 2731da177e4SLinus Torvalds t->tm_sec = bcd2int (rtc->bcd_sec); 2741da177e4SLinus Torvalds rtc->ctrl = 0; 2751da177e4SLinus Torvalds } 2761da177e4SLinus Torvalds return 0; 2771da177e4SLinus Torvalds } 2781da177e4SLinus Torvalds 2791da177e4SLinus Torvalds int mvme16x_set_clock_mmss (unsigned long nowtime) 2801da177e4SLinus Torvalds { 2811da177e4SLinus Torvalds return 0; 2821da177e4SLinus Torvalds } 2831da177e4SLinus Torvalds 284