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/config.h>
13 #include <linux/kernel.h>
14 #include <linux/sched.h>
15 #include <linux/param.h>
16 #include <linux/init.h>
17 #include <linux/interrupt.h>
20 #include <asm/traps.h>
21 #include <asm/machdep.h>
22 #include <asm/coldfire.h>
23 #include <asm/mcftimer.h>
24 #include <asm/mcfsim.h>
25 #include <asm/mcfdma.h>
26 #include <asm/delay.h>
27 #include <asm/mcfwdebug.h>
29 /***************************************************************************/
31 void coldfire_tick(void);
32 void coldfire_timer_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
33 unsigned long coldfire_timer_offset(void);
34 void coldfire_trap_init(void);
35 void coldfire_reset(void);
37 extern unsigned int mcf_timervector;
38 extern unsigned int mcf_profilevector;
39 extern unsigned int mcf_timerlevel;
41 /***************************************************************************/
44 * DMA channel base address table.
46 unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
47 MCF_MBAR + MCFDMA_BASE0,
48 MCF_MBAR + MCFDMA_BASE1,
49 MCF_MBAR + MCFDMA_BASE2,
50 MCF_MBAR + MCFDMA_BASE3,
53 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
55 /***************************************************************************/
57 void mcf_autovector(unsigned int vec)
59 volatile unsigned char *mbar;
61 if ((vec >= 25) && (vec <= 31)) {
62 mbar = (volatile unsigned char *) MCF_MBAR;
63 vec = 0x1 << (vec - 24);
64 *(mbar + MCFSIM_AVR) |= vec;
65 mcf_setimr(mcf_getimr() & ~vec);
69 /***************************************************************************/
71 void mcf_settimericr(unsigned int timer, unsigned int level)
73 volatile unsigned char *icrp;
74 unsigned int icr, imr;
78 case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
79 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
82 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
83 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
84 mcf_setimr(mcf_getimr() & ~imr);
88 /***************************************************************************/
90 int mcf_timerirqpending(int timer)
95 case 1: imr = MCFSIM_IMR_TIMER1; break;
96 case 2: imr = MCFSIM_IMR_TIMER2; break;
99 return (mcf_getipr() & imr);
102 /***************************************************************************/
104 void config_BSP(char *commandp, int size)
106 mcf_setimr(MCFSIM_IMR_MASKALL);
108 #if defined(CONFIG_BOOTPARAM)
109 strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
110 commandp[size-1] = 0;
111 #elif defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
112 defined(CONFIG_DISKtel) || defined(CONFIG_SECUREEDGEMP3) || \
113 defined(CONFIG_CLEOPATRA)
114 /* Copy command line from FLASH to local buffer... */
115 memcpy(commandp, (char *) 0xf0004000, size);
116 commandp[size-1] = 0;
117 /* Different timer setup - to prevent device clash */
118 mcf_timervector = 30;
119 mcf_profilevector = 31;
122 memset(commandp, 0, size);
125 mach_sched_init = coldfire_timer_init;
126 mach_tick = coldfire_tick;
127 mach_gettimeoffset = coldfire_timer_offset;
128 mach_trap_init = coldfire_trap_init;
129 mach_reset = coldfire_reset;
131 #ifdef MCF_BDM_DISABLE
133 * Disable the BDM clocking. This also turns off most of the rest of
134 * the BDM device. This is good for EMC reasons. This option is not
135 * incompatible with the memory protection option.
137 wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
141 /***************************************************************************/