patch-2.3.17 linux/arch/m68k/sun3/config.c

• Lines: 174
• Date: Sat Sep 4 13:06:41 1999
• Orig file: v2.3.16/linux/arch/m68k/sun3/config.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.16/linux/arch/m68k/sun3/config.c linux/arch/m68k/sun3/config.c
@@ -0,0 +1,173 @@
+/*
+ *  linux/arch/m68k/sun3/config.c
+ *
+ *  Copyright (C) 1996,1997 Pekka Pietik{inen
+ *
+ * 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 <stdarg.h>
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/kd.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/init.h>
+
+#include <asm/oplib.h>
+#include <asm/setup.h>
+#include <asm/contregs.h>
+#include <asm/movs.h>
+#include <asm/pgtable.h>
+#include <asm/sun3-head.h>
+#include <asm/sun3mmu.h>
+#include <asm/machdep.h>
+#include <asm/intersil.h>
+#include <asm/irq.h>
+#include <asm/segment.h>
+
+extern char _text, _end;
+
+static int kernel_start, kernel_end;
+char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
+
+static unsigned long sun3_gettimeoffset(void);
+extern int sun3_get_irq_list (char *);
+extern void sun3_sched_init(void (*handler)(int, void *, struct pt_regs *));
+extern void sun3_init_IRQ (void);
+extern void (*sun3_default_handler[]) (int, void *, struct pt_regs *);
+extern int sun3_request_irq (unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
+                              unsigned long flags, const char *devname, void *dev_id);
+extern void sun3_free_irq (unsigned int irq, void *dev_id);
+extern void sun3_enable_irq (unsigned int);
+extern void sun3_disable_irq (unsigned int);
+extern void sun3_enable_interrupts (void);
+extern void sun3_disable_interrupts (void);
+extern void sun3_get_model (unsigned char* model);
+extern void idprom_init (void);
+void sun3_gettod (int *yearp, int *monp, int *dayp,
+                   int *hourp, int *minp, int *secp);
+
+extern unsigned long sun_serial_setup(unsigned long memory_start);
+volatile char* clock_va; 
+extern unsigned char* sun3_intreg;
+
+__initfunc(void sun3_init(void))
+{
+	unsigned char enable_register;
+	int i;
+
+	m68k_machtype= MACH_SUN3;
+	m68k_cputype = CPU_68020;
+	m68k_fputype = FPU_68881; /* mc68881 actually */
+	m68k_mmutype = MMU_SUN3;
+	clock_va    =          (char *) 0xfe06000;	/* dark  */
+	sun3_intreg = (unsigned char *) 0xfe0a000;	/* magic */
+	sun3_disable_interrupts();
+	
+	prom_init((void *)LINUX_OPPROM_BEGVM);
+		
+	GET_CONTROL_BYTE(AC_SENABLE,enable_register);
+	enable_register |= 0x40; /* Enable FPU */	
+	SET_CONTROL_BYTE(AC_SENABLE,enable_register);
+	GET_CONTROL_BYTE(AC_SENABLE,enable_register);
+	
+	/* This code looks suspicious, because it doesn't subtract
+           memory belonging to the kernel from the available space */
+
+
+	memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg));
+
+	/* Reserve important PMEGS */
+	/* FIXME: These should be probed instead of hardcoded */
+
+	for (i=0; i<8; i++)		/* Kernel PMEGs */
+		sun3_reserved_pmeg[i] = 1;
+
+	sun3_reserved_pmeg[247] = 1;	/* ROM mapping  */
+	sun3_reserved_pmeg[248] = 1;	/* AMD Ethernet */
+	sun3_reserved_pmeg[251] = 1;	/* VB area      */
+	sun3_reserved_pmeg[254] = 1;	/* main I/O     */
+
+	sun3_reserved_pmeg[249] = 1;
+	sun3_reserved_pmeg[252] = 1;
+	sun3_reserved_pmeg[253] = 1;
+	set_fs(KERNEL_DS);
+}
+
+/* Without this, Bad Things happen when something calls arch_reset. */
+static void sun3_reboot (void)
+{
+	prom_reboot ("vmlinux");
+}
+
+__initfunc(void config_sun3(unsigned long *start_mem_p, unsigned long *end_mem_p))
+{
+	printk("ARCH: SUN3\n");
+	idprom_init();
+
+	/* Subtract kernel memory from available memory */
+
+        mach_sched_init      =  sun3_sched_init; 
+        mach_init_IRQ        =  sun3_init_IRQ;
+        mach_default_handler = &sun3_default_handler;
+        mach_request_irq     =  sun3_request_irq;
+        mach_free_irq        =  sun3_free_irq;
+//	mach_keyb_init       =  sun3_keyb_init;
+	enable_irq     	     =  sun3_enable_irq;
+        disable_irq  	     =  sun3_disable_irq;
+        mach_get_irq_list    =  sun3_get_irq_list;
+        mach_gettod          =  sun3_gettod;	
+        mach_reset           =  sun3_reboot;
+	mach_gettimeoffset   =  sun3_gettimeoffset;
+	mach_get_model	     =  sun3_get_model;
+#ifndef CONFIG_SERIAL_CONSOLE
+	conswitchp 	     = &dummy_con;
+#endif
+	kernel_start = 0x00000000; /* NOT &_text */
+	kernel_end   = ((((int)&_end) + 0x2000) & ~0x1fff) - 1;
+
+	*start_mem_p = kernel_end + 1;
+// PROM seems to want the last couple of physical pages. --m
+	*end_mem_p   = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE;
+	m68k_num_memory=1;
+        m68k_memory[0].size=*(romvec->pv_sun3mem);
+           
+        *start_mem_p = sun_serial_setup(*start_mem_p);
+}
+
+__initfunc(void sun3_sched_init(void (*timer_routine)(int, void *, struct pt_regs *)))
+{
+	sun3_disable_interrupts();
+        intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
+        intersil_clock->int_reg=INTERSIL_HZ_100_MASK;
+ 	intersil_clear();
+        sun3_enable_irq(5);
+        intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE);
+        sun3_enable_interrupts();
+        intersil_clear();
+}
+
+static unsigned long sun3_gettimeoffset(void)
+{ 
+  return 1;
+}
+
+void sun3_gettod (int *yearp, int *monp, int *dayp,
+                   int *hourp, int *minp, int *secp)
+{
+	struct intersil_dt* todintersil;
+        todintersil = (struct intersil_dt *) &intersil_clock->counter;
+        *secp  = todintersil->second; 
+        *minp  = todintersil->minute;
+        *hourp = todintersil->hour;
+        *dayp  = todintersil->day;
+        *monp  = todintersil->month;
+        *yearp = todintersil->year+68; /* The base year for sun3 is 1968 */
+}
+