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/mcfwdebug.h>
28 /***************************************************************************/
30 void coldfire_tick(void);
31 void coldfire_timer_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
32 unsigned long coldfire_timer_offset(void);
33 void coldfire_trap_init(void);
34 void coldfire_reset(void);
36 extern unsigned int mcf_timervector;
37 extern unsigned int mcf_profilevector;
38 extern unsigned int mcf_timerlevel;
40 /***************************************************************************/
43 * Some platforms need software versions of the GPIO data registers.
45 unsigned short ppdata;
46 unsigned char ledbank = 0xff;
48 /***************************************************************************/
51 * DMA channel base address table.
53 unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
54 MCF_MBAR + MCFDMA_BASE0,
55 MCF_MBAR + MCFDMA_BASE1,
56 MCF_MBAR + MCFDMA_BASE2,
57 MCF_MBAR + MCFDMA_BASE3,
60 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
62 /***************************************************************************/
64 void mcf_autovector(unsigned int vec)
66 volatile unsigned char *mbar;
68 if ((vec >= 25) && (vec <= 31)) {
69 mbar = (volatile unsigned char *) MCF_MBAR;
70 vec = 0x1 << (vec - 24);
71 *(mbar + MCFSIM_AVR) |= vec;
72 mcf_setimr(mcf_getimr() & ~vec);
76 /***************************************************************************/
78 void mcf_settimericr(unsigned int timer, unsigned int level)
80 volatile unsigned char *icrp;
81 unsigned int icr, imr;
85 case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
86 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
89 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
90 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
91 mcf_setimr(mcf_getimr() & ~imr);
95 /***************************************************************************/
97 int mcf_timerirqpending(int timer)
102 case 1: imr = MCFSIM_IMR_TIMER1; break;
103 case 2: imr = MCFSIM_IMR_TIMER2; break;
106 return (mcf_getipr() & imr);
109 /***************************************************************************/
111 void config_BSP(char *commandp, int size)
113 mcf_setimr(MCFSIM_IMR_MASKALL);
115 #if defined(CONFIG_BOOTPARAM)
116 strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
117 commandp[size-1] = 0;
118 #elif defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
119 defined(CONFIG_DISKtel) || defined(CONFIG_SECUREEDGEMP3) || \
120 defined(CONFIG_CLEOPATRA)
121 /* Copy command line from FLASH to local buffer... */
122 memcpy(commandp, (char *) 0xf0004000, size);
123 commandp[size-1] = 0;
124 /* Different timer setup - to prevent device clash */
125 mcf_timervector = 30;
126 mcf_profilevector = 31;
129 memset(commandp, 0, size);
132 mach_sched_init = coldfire_timer_init;
133 mach_tick = coldfire_tick;
134 mach_gettimeoffset = coldfire_timer_offset;
135 mach_trap_init = coldfire_trap_init;
136 mach_reset = coldfire_reset;
138 #ifdef MCF_BDM_DISABLE
140 * Disable the BDM clocking. This also turns off most of the rest of
141 * the BDM device. This is good for EMC reasons. This option is not
142 * incompatible with the memory protection option.
144 wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
148 /***************************************************************************/