patch-2.4.19 linux-2.4.19/arch/mips/cobalt/setup.c

• Lines: 128
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/cobalt/setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/cobalt/setup.c linux-2.4.19/arch/mips/cobalt/setup.c
@@ -0,0 +1,127 @@
+/*
+ * Setup pointers to hardware dependent routines.
+ *
+ * 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.
+ *
+ * Copyright (C) 1996, 1997 by Ralf Baechle
+ * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv)
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/mc146818rtc.h>
+#include <linux/init.h>
+#include <linux/ide.h>
+
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/cobalt/cobalt.h>
+#include <asm/pci.h>
+#include <asm/processor.h>
+#include <asm/reboot.h>
+#include <asm/traps.h>
+
+extern void cobalt_machine_restart(char *command);
+extern void cobalt_machine_halt(void);
+extern void cobalt_machine_power_off(void);
+
+extern struct rtc_ops std_rtc_ops;
+extern struct ide_ops std_ide_ops;
+
+
+char arcs_cmdline[CL_SIZE] = { "console=ttyS0,115200 root=/dev/hda1" };
+
+const char *get_system_type(void)
+{
+	return "MIPS Cobalt";
+}
+
+
+#define GALILEO_T0_VAL		0xb4000850
+#define GALILEO_TIMER_CTRL	0xb4000864
+#define GALILEO_CPU_MASK	0xb4000c1c
+
+#define GALILEO_ENTC0		0x01
+#define GALILEO_SELTC0		0x02
+
+static void __init cobalt_time_init(void)
+{
+	rtc_ops = &std_rtc_ops;
+}
+
+static void __init cobalt_timer_setup(struct irqaction *irq)
+{
+	/* Load timer value for 150 Hz */
+	volatile unsigned long *timer_reg = (volatile unsigned long *)GALILEO_T0_VAL;
+
+	*timer_reg = 500000;
+
+	/* Register our timer interrupt */
+	setup_irq(0, irq);
+
+	/* Enable timer ints */
+	*((volatile unsigned long *) GALILEO_TIMER_CTRL) = 
+			(unsigned long) (GALILEO_ENTC0 | GALILEO_SELTC0);
+	/* Unmask timer int */
+	*((volatile unsigned long *) GALILEO_CPU_MASK) = (unsigned long) 0x00000100; 
+}
+
+
+void __init bus_error_init(void) { /* nothing */ }
+
+
+int cobalt_serial_present;
+int cobalt_serial_type;
+int cobalt_is_raq;
+
+void __init cobalt_setup(void)
+{
+
+	_machine_restart = cobalt_machine_restart;
+	_machine_halt = cobalt_machine_halt;
+	_machine_power_off = cobalt_machine_power_off;
+
+	board_time_init = cobalt_time_init;
+	board_timer_setup = cobalt_timer_setup;
+
+#ifdef CONFIG_BLK_DEV_IDE
+	ide_ops = &std_ide_ops;
+#endif
+        set_io_port_base(0xb0000000);
+
+	/* 
+	 * This is a prom style console. We just poke at the
+	 *  UART to make it talk.
+	 * Only use this console if you really screw up and can't
+	 *  get to the stage of setting up a real serial console.
+	 */
+	/*ns16550_setup_console();*/
+
+	/* We have to do this early, here, before the value could
+	 * possibly be overwritten by the bootup sequence.
+	 */
+	cobalt_serial_present = *((unsigned long *) 0xa020001c);
+	cobalt_serial_type    = *((unsigned long *) 0xa0200020);
+	cobalt_is_raq         = (cobalt_serial_present != 0x0
+				 && cobalt_serial_type == 0x1);
+}
+
+/* Prom init. We read our one and only communication with the
+    firmware. Grab the amount of installed memory */
+void __init prom_init(int argc)
+{
+	mips_machgroup = MACH_GROUP_COBALT;
+	
+	add_memory_region(0x0, argc & 0x7fffffff, BOOT_MEM_RAM);
+}
+
+void __init prom_free_prom_memory(void)
+{
+	/* Nothing to do! */
+}