1 /***************************************************************************/
4 * linux/arch/m68knommu/platform/5307/config.c
6 * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
7 * Copyright (C) 2000, Lineo (www.lineo.com)
10 /***************************************************************************/
12 #include <linux/kernel.h>
13 #include <linux/sched.h>
14 #include <linux/param.h>
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
19 #include <asm/traps.h>
20 #include <asm/machdep.h>
21 #include <asm/coldfire.h>
22 #include <asm/mcftimer.h>
23 #include <asm/mcfsim.h>
24 #include <asm/mcfdma.h>
25 #include <asm/mcfwdebug.h>
27 /***************************************************************************/
29 void coldfire_tick(void);
30 void coldfire_timer_init(irq_handler_t handler);
31 unsigned long coldfire_timer_offset(void);
32 void coldfire_trap_init(void);
33 void coldfire_reset(void);
35 extern unsigned int mcf_timervector;
36 extern unsigned int mcf_profilevector;
37 extern unsigned int mcf_timerlevel;
39 /***************************************************************************/
42 * Some platforms need software versions of the GPIO data registers.
44 unsigned short ppdata;
45 unsigned char ledbank = 0xff;
47 /***************************************************************************/
50 * DMA channel base address table.
52 unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
53 MCF_MBAR + MCFDMA_BASE0,
54 MCF_MBAR + MCFDMA_BASE1,
55 MCF_MBAR + MCFDMA_BASE2,
56 MCF_MBAR + MCFDMA_BASE3,
59 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
61 /***************************************************************************/
63 void mcf_autovector(unsigned int vec)
65 volatile unsigned char *mbar;
67 if ((vec >= 25) && (vec <= 31)) {
68 mbar = (volatile unsigned char *) MCF_MBAR;
69 vec = 0x1 << (vec - 24);
70 *(mbar + MCFSIM_AVR) |= vec;
71 mcf_setimr(mcf_getimr() & ~vec);
75 /***************************************************************************/
77 void mcf_settimericr(unsigned int timer, unsigned int level)
79 volatile unsigned char *icrp;
80 unsigned int icr, imr;
84 case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
85 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
88 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
89 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
90 mcf_setimr(mcf_getimr() & ~imr);
94 /***************************************************************************/
96 int mcf_timerirqpending(int timer)
101 case 1: imr = MCFSIM_IMR_TIMER1; break;
102 case 2: imr = MCFSIM_IMR_TIMER2; break;
105 return (mcf_getipr() & imr);
108 /***************************************************************************/
110 void config_BSP(char *commandp, int size)
112 mcf_setimr(MCFSIM_IMR_MASKALL);
114 #if defined(CONFIG_BOOTPARAM)
115 strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
116 commandp[size-1] = 0;
117 #elif defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
118 defined(CONFIG_DISKtel) || defined(CONFIG_SECUREEDGEMP3) || \
119 defined(CONFIG_CLEOPATRA)
120 /* Copy command line from FLASH to local buffer... */
121 memcpy(commandp, (char *) 0xf0004000, size);
122 commandp[size-1] = 0;
123 /* Different timer setup - to prevent device clash */
124 mcf_timervector = 30;
125 mcf_profilevector = 31;
128 memset(commandp, 0, size);
131 mach_sched_init = coldfire_timer_init;
132 mach_tick = coldfire_tick;
133 mach_gettimeoffset = coldfire_timer_offset;
134 mach_trap_init = coldfire_trap_init;
135 mach_reset = coldfire_reset;
137 #ifdef MCF_BDM_DISABLE
139 * Disable the BDM clocking. This also turns off most of the rest of
140 * the BDM device. This is good for EMC reasons. This option is not
141 * incompatible with the memory protection option.
143 wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
147 /***************************************************************************/