patch-2.3.43 linux/arch/ia64/sn/sn1/setup.c

• Lines: 78
• Date: Sun Feb 6 18:42:40 2000
• Orig file: v2.3.42/linux/arch/ia64/sn/sn1/setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.42/linux/arch/ia64/sn/sn1/setup.c linux/arch/ia64/sn/sn1/setup.c
@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright (C) 1999 Silicon Graphics, Inc.
+ * Copyright (C) Vijay Chander(vijay@engr.sgi.com)
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/kdev_t.h>
+#include <linux/string.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/timex.h>
+#include <linux/sched.h>
+
+#include <asm/io.h>
+#include <asm/machvec.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+
+
+/*
+ * The format of "screen_info" is strange, and due to early i386-setup
+ * code. This is just enough to make the console code think we're on a
+ * VGA color display.
+ */
+struct screen_info sn1_screen_info = {
+	orig_x:			 0,
+	orig_y:			 0,
+	orig_video_mode:	 3,
+	orig_video_cols:	80,
+	orig_video_ega_bx:	 3,
+	orig_video_lines:	25,
+	orig_video_isVGA:	 1,
+	orig_video_points:	16
+};
+
+/*
+ * This is here so we can use the CMOS detection in ide-probe.c to
+ * determine what drives are present.  In theory, we don't need this
+ * as the auto-detection could be done via ide-probe.c:do_probe() but
+ * in practice that would be much slower, which is painful when
+ * running in the simulator.  Note that passing zeroes in DRIVE_INFO
+ * is sufficient (the IDE driver will autodetect the drive geometry).
+ */
+char drive_info[4*16];
+
+unsigned long
+sn1_map_nr (unsigned long addr)
+{
+	return MAP_NR_SN1(addr);
+}
+
+void
+sn1_setup(char **cmdline_p)
+{
+
+	ROOT_DEV = to_kdev_t(0x0301);		/* default to first IDE drive */
+
+#if !defined (CONFIG_IA64_SOFTSDV_HACKS)
+	/* 
+	 * Program the timer to deliver timer ticks.  0x40 is the I/O port
+	 * address of PIT counter 0, 0x43 is the I/O port address of the 
+	 * PIT control word. 
+	 */
+	request_region(0x40,0x20,"timer");
+	outb(0x34, 0x43);            /* Control word */
+	outb(LATCH & 0xff , 0x40);   /* LSB */
+	outb(LATCH >> 8, 0x40);	     /* MSB */
+	printk("PIT: LATCH at 0x%x%x for %d HZ\n", LATCH >> 8, LATCH & 0xff, HZ);
+#endif
+#ifdef __SMP__
+	init_smp_config();
+#endif
+	screen_info = sn1_screen_info;
+}