patch-2.3.99-pre7 linux/arch/ppc/kernel/m8260_setup.c

• Lines: 304
• Date: Tue May 2 13:05:39 2000
• Orig file: v2.3.99-pre6/linux/arch/ppc/kernel/m8260_setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre6/linux/arch/ppc/kernel/m8260_setup.c linux/arch/ppc/kernel/m8260_setup.c
@@ -0,0 +1,303 @@
+/*
+ * $Id: m8xx_setup.c,v 1.4 1999/09/18 18:40:36 dmalek Exp $
+ *
+ *  linux/arch/ppc/kernel/setup.c
+ *
+ *  Copyright (C) 1995  Linus Torvalds
+ *  Adapted from 'alpha' version by Gary Thomas
+ *  Modified by Cort Dougan (cort@cs.nmt.edu)
+ *  Modified for MBX using prep/chrp/pmac functions by Dan (dmalek@jlc.net)
+ *  Further modified for generic 8xx and 8260 by Dan.
+ */
+
+/*
+ * bootup setup stuff..
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/malloc.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/tty.h>
+#include <linux/major.h>
+#include <linux/interrupt.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+#include <linux/blk.h>
+#include <linux/ioport.h>
+#include <linux/ide.h>
+
+#include <asm/mmu.h>
+#include <asm/processor.h>
+#include <asm/residual.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/ide.h>
+#include <asm/mpc8260.h>
+#include <asm/immap_8260.h>
+#include <asm/machdep.h>
+
+#include "time.h"
+#include "ppc8260_pic.h"
+
+static int m8260_set_rtc_time(unsigned long time);
+unsigned long m8260_get_rtc_time(void);
+void m8260_calibrate_decr(void);
+
+#if 0
+extern int mackbd_setkeycode(unsigned int scancode, unsigned int keycode);
+extern int mackbd_getkeycode(unsigned int scancode);
+extern int mackbd_pretranslate(unsigned char scancode, char raw_mode);
+extern int mackbd_translate(unsigned char scancode, unsigned char *keycode,
+			   char raw_mode);
+extern char mackbd_unexpected_up(unsigned char keycode);
+extern void mackbd_leds(unsigned char leds);
+extern void mackbd_init_hw(void);
+#endif
+
+extern unsigned long loops_per_sec;
+
+unsigned char __res[sizeof(bd_t)];
+unsigned long empty_zero_page[1024];
+
+#ifdef CONFIG_BLK_DEV_RAM
+extern int rd_doload;		/* 1 = load ramdisk, 0 = don't load */
+extern int rd_prompt;		/* 1 = prompt for ramdisk, 0 = don't prompt */
+extern int rd_image_start;	/* starting block # of image */
+#endif
+
+extern char saved_command_line[256];
+
+extern unsigned long find_available_memory(void);
+extern void m8260_cpm_reset(void);
+
+void __init adbdev_init(void)
+{
+}
+
+void __init
+m8260_setup_arch(void)
+{
+	extern char cmd_line[];
+	
+	printk("Boot arguments: %s\n", cmd_line);
+
+	/* Reset the Communication Processor Module.
+	*/
+	m8260_cpm_reset();
+}
+
+void
+abort(void)
+{
+#ifdef CONFIG_XMON
+	extern void xmon(void *);
+	xmon(0);
+#endif
+	machine_restart(NULL);
+}
+
+/* The decrementer counts at the system (internal) clock frequency
+ * divided by four.
+ */
+void __init m8260_calibrate_decr(void)
+{
+	bd_t	*binfo = (bd_t *)__res;
+	int freq, divisor;
+
+	freq = (binfo->bi_intfreq * 1000000);
+        divisor = 16;
+        decrementer_count = freq / HZ / divisor;
+        count_period_num = divisor;
+        count_period_den = freq / 1000000;
+}
+
+/* The 8260 has an internal 1-second timer update register that
+ * we should use for this purpose.
+ */
+static uint	rtc_time;
+static int
+m8260_set_rtc_time(unsigned long time)
+{
+	rtc_time = time;
+	return(0);
+}
+
+unsigned long __init
+m8260_get_rtc_time(void)
+{
+
+	/* Get time from the RTC.
+	*/
+	return((unsigned long)rtc_time);
+}
+
+void
+m8260_restart(char *cmd)
+{
+	extern void m8260_gorom(bd_t *bi, uint addr);
+
+	m8260_gorom(NULL, 0xff000100);
+}
+
+void
+m8260_power_off(void)
+{
+   m8260_restart(NULL);
+}
+
+void
+m8260_halt(void)
+{
+   m8260_restart(NULL);
+}
+
+
+int m8260_setup_residual(char *buffer)
+{
+        int     len = 0;
+	bd_t	*bp;
+
+	bp = (bd_t *)__res;
+			
+	len += sprintf(len+buffer,"clock\t\t: %dMHz\n"
+		       "bus clock\t: %dMHz\n",
+		       bp->bi_intfreq /*/ 1000000*/,
+		       bp->bi_busfreq /*/ 1000000*/);
+
+	return len;
+}
+
+/* Initialize the internal interrupt controller.  The number of
+ * interrupts supported can vary with the processor type, and the
+ * 8260 family can have up to 64.
+ * External interrupts can be either edge or level triggered, and
+ * need to be initialized by the appropriate driver.
+ */
+void __init
+m8260_init_IRQ(void)
+{
+	int i;
+	void cpm_interrupt_init(void);
+
+#if 0
+        ppc8260_pic.irq_offset = 0;
+#endif
+        for ( i = 0 ; i < NR_SIU_INTS ; i++ )
+                irq_desc[i].handler = &ppc8260_pic;
+	
+	/* Initialize the default interrupt mapping priorities,
+	 * in case the boot rom changed something on us.
+	 */
+	immr->im_intctl.ic_sicr = 0;
+	immr->im_intctl.ic_siprr = 0x05309770;
+	immr->im_intctl.ic_scprrh = 0x05309770;
+	immr->im_intctl.ic_scprrl = 0x05309770;
+
+}
+
+
+void __init
+m8260_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	 unsigned long r6, unsigned long r7)
+{
+
+	if ( r3 )
+		memcpy( (void *)__res,(void *)(r3+KERNELBASE), sizeof(bd_t) );
+	
+#ifdef CONFIG_BLK_DEV_INITRD
+	/* take care of initrd if we have one */
+	if ( r4 )
+	{
+		initrd_start = r4 + KERNELBASE;
+		initrd_end = r5 + KERNELBASE;
+	}
+#endif /* CONFIG_BLK_DEV_INITRD */
+	/* take care of cmd line */
+	if ( r6 )
+	{
+		
+		*(char *)(r7+KERNELBASE) = 0;
+		strcpy(cmd_line, (char *)(r6+KERNELBASE));
+	}
+
+	ppc_md.setup_arch     = m8260_setup_arch;
+	ppc_md.setup_residual = m8260_setup_residual;
+	ppc_md.get_cpuinfo    = NULL;
+	ppc_md.irq_cannonicalize = NULL;
+	ppc_md.init_IRQ       = m8260_init_IRQ;
+	ppc_md.get_irq	      = m8260_get_irq;
+	ppc_md.init           = NULL;
+
+	ppc_md.restart        = m8260_restart;
+	ppc_md.power_off      = m8260_power_off;
+	ppc_md.halt           = m8260_halt;
+
+	ppc_md.time_init      = NULL;
+	ppc_md.set_rtc_time   = m8260_set_rtc_time;
+	ppc_md.get_rtc_time   = m8260_get_rtc_time;
+	ppc_md.calibrate_decr = m8260_calibrate_decr;
+
+#if 0
+	ppc_md.kbd_setkeycode    = pckbd_setkeycode;
+	ppc_md.kbd_getkeycode    = pckbd_getkeycode;
+	ppc_md.kbd_pretranslate  = pckbd_pretranslate;
+	ppc_md.kbd_translate     = pckbd_translate;
+	ppc_md.kbd_unexpected_up = pckbd_unexpected_up;
+	ppc_md.kbd_leds          = pckbd_leds;
+	ppc_md.kbd_init_hw       = pckbd_init_hw;
+#ifdef CONFIG_MAGIC_SYSRQ
+	ppc_md.kbd_sysrq_xlate	 = pckbd_sysrq_xlate;
+#endif
+#else
+	ppc_md.kbd_setkeycode    = NULL;
+	ppc_md.kbd_getkeycode    = NULL;
+	ppc_md.kbd_translate     = NULL;
+	ppc_md.kbd_unexpected_up = NULL;
+	ppc_md.kbd_leds          = NULL;
+	ppc_md.kbd_init_hw       = NULL;
+#ifdef CONFIG_MAGIC_SYSRQ
+	ppc_md.kbd_sysrq_xlate	 = NULL;
+#endif
+#endif
+
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
+        ppc_ide_md.insw = m8xx_ide_insw;
+        ppc_ide_md.outsw = m8xx_ide_outsw;
+        ppc_ide_md.default_irq = m8xx_ide_default_irq;
+        ppc_ide_md.default_io_base = m8xx_ide_default_io_base;
+        ppc_ide_md.check_region = m8xx_ide_check_region;
+        ppc_ide_md.request_region = m8xx_ide_request_region;
+        ppc_ide_md.release_region = m8xx_ide_release_region;
+        ppc_ide_md.fix_driveid = m8xx_ide_fix_driveid;
+        ppc_ide_md.ide_init_hwif = m8xx_ide_init_hwif_ports;
+        ppc_ide_md.ide_request_irq = m8xx_ide_request_irq;
+
+        ppc_ide_md.io_base = _IO_BASE;
+#endif		
+}
+
+void
+prom_init(uint r3, uint r4, uint r5, uint r6)
+{
+	/* Nothing to do now, but we are called immediatedly upon
+	 * kernel start up with MMU disabled, so if there is
+	 * anything we need to do......
+	 */
+}
+
+/* Mainly for ksyms.
+*/
+int
+request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
+		       unsigned long flag, const char *naem, void *dev)
+{
+	panic("request IRQ\n");
+}