diff options
Diffstat (limited to 'arch/m68k/68000/m68VZ328.c')
| -rw-r--r-- | arch/m68k/68000/m68VZ328.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/arch/m68k/68000/m68VZ328.c b/arch/m68k/68000/m68VZ328.c new file mode 100644 index 000000000..ada87b23a --- /dev/null +++ b/arch/m68k/68000/m68VZ328.c @@ -0,0 +1,189 @@ +/***************************************************************************/ + +/* + * m68VZ328.c - 68VZ328 specific config + * + * 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/init.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/kd.h> +#include <linux/netdevice.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/rtc.h> +#include <linux/pgtable.h> + +#include <asm/machdep.h> +#include <asm/MC68VZ328.h> +#include <asm/bootstd.h> + +#ifdef CONFIG_INIT_LCD +#include "bootlogo-vz.h" +#endif + +/***************************************************************************/ + +int m68328_hwclk(int set, struct rtc_time *t); + +/***************************************************************************/ +/* Init Drangon Engine hardware */ +/***************************************************************************/ +#if defined(CONFIG_DRAGEN2) + +static void m68vz328_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 init_hardware(char *command, int size) +{ +#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_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 +} + +/***************************************************************************/ +/* Init RT-Control uCdimm hardware */ +/***************************************************************************/ +#elif defined(CONFIG_UCDIMM) + +static void m68vz328_reset(void) +{ + local_irq_disable(); + asm volatile ( + "moveal #0x10c00000, %a0;\n\t" + "moveb #0, 0xFFFFF300;\n\t" + "moveal 0(%a0), %sp;\n\t" + "moveal 4(%a0), %a0;\n\t" + "jmp (%a0);\n" + ); +} + +unsigned char *cs8900a_hwaddr; +static int errno; + +_bsc0(char *, getserialnum) +_bsc1(unsigned char *, gethwaddr, int, a) +_bsc1(char *, getbenv, char *, a) + +static void __init init_hardware(char *command, int size) +{ + char *p; + + pr_info("uCdimm serial string [%s]\n", getserialnum()); + p = cs8900a_hwaddr = gethwaddr(0); + pr_info("uCdimm hwaddr %pM\n", p); + p = getbenv("APPEND"); + if (p) + strcpy(p, command); + else + command[0] = 0; +} + +/***************************************************************************/ +#else + +static void m68vz328_reset(void) +{ +} + +static void __init init_hardware(char *command, int size) +{ +} + +/***************************************************************************/ +#endif +/***************************************************************************/ + +void __init config_BSP(char *command, int size) +{ + pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n"); + + init_hardware(command, size); + + mach_sched_init = hw_timer_init; + mach_hwclk = m68328_hwclk; + mach_reset = m68vz328_reset; +} + +/***************************************************************************/ |