| /* |
| * 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/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 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); |
| |
| 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 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 void mvme16x_get_hardware_list(struct seq_file *m) |
| { |
| p_bdid p = &mvme_bdid; |
| |
| if (p->brdno == 0x0162 || p->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) |
| |
| static void 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; |
| } |
| |
| static struct console cons_info = |
| { |
| .name = "sercon", |
| .write = cons_write, |
| .flags = CON_PRINTBUFFER | CON_BOOT, |
| .index = -1, |
| }; |
| |
| static void __init mvme16x_early_console(void) |
| { |
| register_console(&cons_info); |
| |
| printk(KERN_INFO "MVME16x: early console registered\n"); |
| } |
| #endif |
| |
| 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_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; |
| #ifdef CONFIG_EARLY_PRINTK |
| mvme16x_early_console(); |
| #endif |
| } |
| } |
| |
| static irqreturn_t mvme16x_abort_int (int irq, void *dev_id) |
| { |
| 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) |
| { |
| *(volatile unsigned char *)0xfff4201b |= 8; |
| return tick_handler(irq, dev_id); |
| } |
| |
| void mvme16x_sched_init (irq_handler_t timer_routine) |
| { |
| 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; |
| } |
| |