patch-2.1.80 linux/arch/arm/kernel/setup-ebsa110.c

• Lines: 144
• Date: Tue Jan 20 16:39:41 1998
• Orig file: v2.1.79/linux/arch/arm/kernel/setup-ebsa110.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.79/linux/arch/arm/kernel/setup-ebsa110.c linux/arch/arm/kernel/setup-ebsa110.c
@@ -0,0 +1,143 @@
+/*
+ *  linux/arch/arm/kernel/setup-sa.c
+ *
+ *  Copyright (C) 1995, 1996 Russell King
+ */
+
+/*
+ * This file obtains various parameters about the system that the kernel
+ * is running on.
+ */
+
+#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/ldt.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/tty.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/major.h>
+#include <linux/utsname.h>
+
+#include <asm/segment.h>
+#include <asm/system.h>
+#include <asm/hardware.h>
+#include <asm/pgtable.h>
+
+#ifndef CONFIG_CMDLINE
+#define CONFIG_CMDLINE	"root=nfs rw console=ttyS1,38400n8"
+#endif
+#define MEM_SIZE	(16*1024*1024)
+
+#define COMMAND_LINE_SIZE 256
+
+unsigned char aux_device_present;
+unsigned long arm_id;
+extern int root_mountflags;
+extern int _etext, _edata, _end;
+
+#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 */
+
+static inline void setup_ramdisk (void)
+{
+    rd_image_start	= 0;
+    rd_prompt		= 1;
+    rd_doload		= 1;
+}
+#else
+#define setup_ramdisk()	
+#endif
+
+static char default_command_line[] = CONFIG_CMDLINE;
+static char command_line[COMMAND_LINE_SIZE] = { 0, };
+       char saved_command_line[COMMAND_LINE_SIZE];
+
+struct processor processor;
+extern const struct processor sa110_processor_functions;
+
+void setup_arch(char **cmdline_p,
+	unsigned long * memory_start_p, unsigned long * memory_end_p)
+{
+	unsigned long memory_start, memory_end;
+	char c = ' ', *to = command_line, *from;
+	int len = 0;
+
+	memory_start = (unsigned long)&_end;
+	memory_end = 0xc0000000 + MEM_SIZE;
+	from = default_command_line;
+
+	processor = sa110_processor_functions;
+	processor._proc_init ();
+
+	ROOT_DEV		= 0x00ff;
+	setup_ramdisk();
+
+	init_task.mm->start_code = TASK_SIZE;
+	init_task.mm->end_code	 = TASK_SIZE + (unsigned long) &_etext;
+	init_task.mm->end_data	 = TASK_SIZE + (unsigned long) &_edata;
+	init_task.mm->brk	 = TASK_SIZE + (unsigned long) &_end;
+
+	/* Save unparsed command line copy for /proc/cmdline */
+	memcpy(saved_command_line, from, COMMAND_LINE_SIZE);
+	saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
+
+	for (;;) {
+		if (c == ' ' &&
+		    from[0] == 'm' &&
+		    from[1] == 'e' &&
+		    from[2] == 'm' &&
+		    from[3] == '=') {
+			memory_end = simple_strtoul(from+4, &from, 0);
+			if ( *from == 'K' || *from == 'k' ) {
+				memory_end = memory_end << 10;
+				from++;
+			} else if ( *from == 'M' || *from == 'm' ) {
+				memory_end = memory_end << 20;
+				from++;
+			}
+			memory_end = memory_end + PAGE_OFFSET;
+		}
+		c = *from++;
+		if (!c)
+			break;
+		if (COMMAND_LINE_SIZE <= ++len)
+			break;
+		*to++ = c;
+	}
+
+	*to = '\0';
+	*cmdline_p = command_line;
+	*memory_start_p = memory_start;
+	*memory_end_p = memory_end;
+	strcpy (system_utsname.machine, "sa110");
+}
+
+int get_cpuinfo(char * buffer)
+{
+	int len;
+
+	len = sprintf (buffer,  "CPU:\n"
+				"Type\t\t: %s\n"
+				"Revision\t: %d\n"
+				"Manufacturer\t: %s\n"
+				"32bit modes\t: %s\n"
+				"BogoMips\t: %lu.%02lu\n",
+				"sa110",
+				(int)arm_id & 15,
+				"DEC",
+				"yes",
+				(loops_per_sec+2500) / 500000,
+				((loops_per_sec+2500) / 5000) % 100);
+	return len;
+}