diff options
Diffstat (limited to 'arch/m68knommu/platform/68VZ328/de2/config.c')
| -rw-r--r-- | arch/m68knommu/platform/68VZ328/de2/config.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/arch/m68knommu/platform/68VZ328/de2/config.c b/arch/m68knommu/platform/68VZ328/de2/config.c new file mode 100644 index 000000000000..d0586197f113 --- /dev/null +++ b/arch/m68knommu/platform/68VZ328/de2/config.c @@ -0,0 +1,191 @@ +/* + * linux/arch/m68knommu/platform/MC68VZ328/de2/config.c + * + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne + * Copyright (C) 2001 Georges Menie, Ken Desmet + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/console.h> +#include <linux/kd.h> +#include <linux/netdevice.h> + +#include <asm/setup.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/irq.h> +#include <asm/machdep.h> +#include <asm/MC68VZ328.h> + +#ifdef CONFIG_INIT_LCD +#include "screen.h" +#endif + +/* with a 33.16 MHz clock, this will give usec resolution to the time functions */ +#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK +#define CLOCK_PRE 7 +#define TICKS_PER_JIFFY 41450 + +static void +dragen2_sched_init(irqreturn_t (*timer_routine) (int, void *, struct pt_regs *)) +{ + /* disable timer 1 */ + TCTL = 0; + + /* set ISR */ + if (request_irq(TMR_IRQ_NUM, timer_routine, IRQ_FLG_LOCK, "timer", NULL)) + panic("Unable to attach timer interrupt\n"); + + /* Restart mode, Enable int, Set clock source */ + TCTL = TCTL_OM | TCTL_IRQEN | CLOCK_SOURCE; + TPRER = CLOCK_PRE; + TCMP = TICKS_PER_JIFFY; + + /* Enable timer 1 */ + TCTL |= TCTL_TEN; +} + +static void dragen2_tick(void) +{ + /* Reset Timer1 */ + TSTAT &= 0; +} + +static unsigned long dragen2_gettimeoffset(void) +{ + unsigned long ticks = TCN, offset = 0; + + /* check for pending interrupt */ + if (ticks < (TICKS_PER_JIFFY >> 1) && (ISR & (1 << TMR_IRQ_NUM))) + offset = 1000000 / HZ; + + ticks = (ticks * 1000000 / HZ) / TICKS_PER_JIFFY; + + return ticks + offset; +} + +static void dragen2_gettod(int *year, int *mon, int *day, int *hour, + int *min, int *sec) +{ + long now = RTCTIME; + + *year = *mon = *day = 1; + *hour = (now >> 24) % 24; + *min = (now >> 16) % 60; + *sec = now % 60; +} + +static void dragen2_reset(void) +{ + local_irq_disable(); + +#ifdef CONFIG_INIT_LCD + PBDATA |= 0x20; /* disable CCFL light */ + PKDATA |= 0x4; /* disable LCD controller */ + LCKCON = 0; +#endif + + __asm__ __volatile__( + "reset\n\t" + "moveal #0x04000000, %a0\n\t" + "moveal 0(%a0), %sp\n\t" + "moveal 4(%a0), %a0\n\t" + "jmp (%a0)" + ); +} + +static void init_hardware(void) +{ +#ifdef CONFIG_DIRECT_IO_ACCESS + SCR = 0x10; /* allow user access to internal registers */ +#endif + + /* CSGB Init */ + CSGBB = 0x4000; + CSB = 0x1a1; + + /* CS8900 init */ + /* PK3: hardware sleep function pin, active low */ + PKSEL |= PK(3); /* select pin as I/O */ + PKDIR |= PK(3); /* select pin as output */ + PKDATA |= PK(3); /* set pin high */ + + /* PF5: hardware reset function pin, active high */ + PFSEL |= PF(5); /* select pin as I/O */ + PFDIR |= PF(5); /* select pin as output */ + PFDATA &= ~PF(5); /* set pin low */ + + /* cs8900 hardware reset */ + PFDATA |= PF(5); + { int i; for (i = 0; i < 32000; ++i); } + PFDATA &= ~PF(5); + + /* INT1 enable (cs8900 IRQ) */ + PDPOL &= ~PD(1); /* active high signal */ + PDIQEG &= ~PD(1); + PDIRQEN |= PD(1); /* IRQ enabled */ + +#ifdef CONFIG_68328_SERIAL_UART2 + /* Enable RXD TXD port bits to enable UART2 */ + PJSEL &= ~(PJ(5) | PJ(4)); +#endif + +#ifdef CONFIG_INIT_LCD + /* initialize LCD controller */ + LSSA = (long) screen_bits; + LVPW = 0x14; + LXMAX = 0x140; + LYMAX = 0xef; + LRRA = 0; + LPXCD = 3; + LPICF = 0x08; + LPOLCF = 0; + LCKCON = 0x80; + PCPDEN = 0xff; + PCSEL = 0; + + /* Enable LCD controller */ + PKDIR |= 0x4; + PKSEL |= 0x4; + PKDATA &= ~0x4; + + /* Enable CCFL backlighting circuit */ + PBDIR |= 0x20; + PBSEL |= 0x20; + PBDATA &= ~0x20; + + /* contrast control register */ + PFDIR |= 0x1; + PFSEL &= ~0x1; + PWMR = 0x037F; +#endif +} + +void config_BSP(char *command, int size) +{ + printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n"); + +#if defined(CONFIG_BOOTPARAM) + strncpy(command, CONFIG_BOOTPARAM_STRING, size); + command[size-1] = 0; +#else + memset(command, 0, size); +#endif + + init_hardware(); + + mach_sched_init = (void *)dragen2_sched_init; + mach_tick = dragen2_tick; + mach_gettimeoffset = dragen2_gettimeoffset; + mach_reset = dragen2_reset; + mach_gettod = dragen2_gettod; +} |