patch-2.4.2 linux/arch/mips/cobalt/setup.c

• Lines: 412
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.1/linux/arch/mips/cobalt/setup.c
• Orig date: Sun Jul 9 22:18:15 2000

diff -u --recursive --new-file v2.4.1/linux/arch/mips/cobalt/setup.c linux/arch/mips/cobalt/setup.c
@@ -1,411 +0,0 @@
-/*
- * Setup pointers to hardware dependand 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
- */
-#include <linux/bios32.h>
-#include <linux/config.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/timex.h>
-#include <asm/bootinfo.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/cobalt.h>
-#include <asm/pci.h>
-#include <asm/processor.h>
-#include <asm/ptrace.h>
-#include <asm/reboot.h>
-#include <asm/vector.h>
-
-extern void cobalt_machine_restart(char *command);
-extern void cobalt_machine_halt(void);
-extern void cobalt_machine_power_off(void);
-
-extern int serial_console;
-
-/*
- * Initial irq handlers.
- */
-static void no_action(int cpl, void *dev_id, struct pt_regs *regs)
-{ 
-}
-
-/*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
-static struct irqaction irq2  = { no_action, 0, 0, "cascade", NULL, NULL};
-
-extern struct feature cobalt_feature;
-extern asmlinkage void cobalt_handle_int(void);
-
-static void cobalt_irq_setup(void) 
-{
-	/*
-	 * Clear all of the interrupts while we change the able around a bit.
-	 */
- 	set_cp0_status(ST0_IM, 0);
-
-	/* Sets the exception_handler array. */
-	set_except_vector(0, cobalt_handle_int);
-
-	request_region(0xb0000020, 0x20, "pic1");
-	request_region(0xb00000A0, 0x20, "pic2");
-	setup_x86_irq(2, &irq2);
-
-	cli();
-
-	set_cp0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1 | IE_IRQ0);
-
-	/* Setup VIA irq mask */
-	VIA_PORT_WRITE(0x20, 0x10);
-	VIA_PORT_WRITE(0x21, 0x00);
-	VIA_PORT_WRITE(0x21, 0x00);
-
-	VIA_PORT_WRITE(0xa0, 0x10);
-	VIA_PORT_WRITE(0xa1, 0x00);
-	VIA_PORT_WRITE(0xa1, 0x00);
-}
-
-void (*board_time_init)(struct irqaction *irq);
-
-static void cobalt_calibrate_timer(void)
-{
-	volatile unsigned long *timer_reg = (volatile unsigned long *)0xb4000850;
-
-	/* Default to 150MHZ, since this is what we are shipping. */
-	*timer_reg = 500000;
-}
-
-static void cobalt_time_init(struct irqaction *irq)
-{
-	/* Load timer value for 100 Hz */
-	cobalt_calibrate_timer();
-	/* *((volatile unsigned long *) 0xb4000850) = (unsigned long) 440000; */
-
-	setup_x86_irq(0, irq);
-
-	/* Enable timer ints */
-	*((volatile unsigned long *) 0xb4000864) = (unsigned long) 0x00000003;
-	/* Unmask timer int */
-	*((volatile unsigned long *) 0xb4000c1c) = (unsigned long) 0x00000100; 
-}
-
-extern struct pci_ops qube_pci_ops;
-int cobalt_serial_present;
-int cobalt_serial_type;
-int cobalt_is_raq;
-
-void cobalt_setup(void)
-{
-	tag *atag;
-
-	/*
-	 * We just check if a tag_screen_info can be gathered
-	 * in setup_arch(), if yes we don't proceed futher...
-	 */
-	atag = bi_TagFind(tag_screen_info);
-	if (!atag) {
-		/*
-		 * If no, we try to find the tag_arc_displayinfo which is
-		 * always created by Milo for an ARC box (for now Milo only
-		 * works on ARC boxes :) -Stoned.
-		 */
-		atag = bi_TagFind(tag_arcdisplayinfo);
-		if (atag) {
-
-			screen_info.orig_x = 
-				((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_x;
-			screen_info.orig_y = 
-				((mips_arc_DisplayInfo*)TAGVALPTR(atag))->cursor_y;
-			screen_info.orig_video_cols  = 
-				((mips_arc_DisplayInfo*)TAGVALPTR(atag))->columns;
-			screen_info.orig_video_lines  = 
-				((mips_arc_DisplayInfo*)TAGVALPTR(atag))->lines;
-		}
-	}
-
-	_machine_restart = cobalt_machine_restart;
-	_machine_halt = cobalt_machine_halt;
-	_machine_power_off = cobalt_machine_power_off;
-
-	irq_setup = cobalt_irq_setup;
-	board_time_init = cobalt_time_init;
-	feature = &cobalt_feature;
-	mips_io_port_base = COBALT_LOCAL_IO_SPACE;
-
-	pci_ops = &qube_pci_ops;
-
-#ifdef CONFIG_COBALT_SERIAL
-	serial_console = 1;
-#endif /* CONFIG_COBALT_SERIAL */
-
-	/* 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);
-}
-
-void	AddTagsEndSymbol(void);
-int bi_TagAdd (enum bi_tag type, unsigned long size, void *data);
-unsigned long next_tag = (unsigned long) NULL;
-unsigned long memory_upper = (unsigned long) NULL;
-
-int bi_TagAdd (enum bi_tag type, unsigned long size, void *data)
-{
-	tag t;
-	unsigned long addr;
-
-	t.tag = type;
-	t.size = size;
-
-	/*
-	 * If next_tag equals NULL it means it's the first tag we're asked
-	 * to create.
-	 */
-	if (next_tag == (unsigned long) NULL)  {
-		/*
-		 * If memory_upper not equals NULL it means that identify()
-		 * was able to figure out how much memory is present in the
-		 * box so we initialize next_tag from it.
-		 */
-		if (memory_upper != (unsigned long) NULL)
-			next_tag = memory_upper;
-
-		/* Else we rely on the fact that the first tag we create for
-		 * a box for which we don't know how RAM it gots is a tag of
-		 * type tag_memupper.  This is ensured by the first entry in
-		 * the defaults tag list for such a box (see identify.c).
-		 * First we check this.
-		 */
-		else {
-			/* Ok it's a memupper tag: we put it's value in 
-			 * memory_upper so launch() can pass it to the
-			 * kernel in register a0 and we initialize next_tag.
-			 */
- 			next_tag = *(unsigned long *) data;
-			memory_upper = *((unsigned long *) data);
-		}
-	}
-
-	/* We put the tag structure.  */
-	addr = next_tag - (sizeof (tag));
-
-	memcpy ((void *) addr, (void *) &t, (size_t) (sizeof (tag)));
-
-	/* We put the tag's data if any.  */
-	if (size != 0) {
-		addr = addr - size;
-		memcpy ((void *) addr, data, (size_t) (t.size));
-	}
-
-	/*
-	 * Set next_tag ready for the next tag creation.
-	 */
-	next_tag = addr;
-	AddTagsEndSymbol();
-
-	return 0;
-}
-
-void SetUpBootInfo(void)
-{
-	unsigned long LongVar;
-	int atag;
-
-	/*
-	 * This is hard coded here but will change when we have a
-	 * Size mem routine.
-	 */
-
-	/*
-	 * 64mb of memory.
-	 */
-
- 	//mips_memory_upper = 0x84000000;
-
-
-#ifndef BOOTLOADER
-
-#if 0	/* You break'a the kernel I break'a ya face. -DaveM */
-
-	/* Eight meg of memory.         */
-	mips_memory_upper = 0x80800000;  /* XXX  this appears to be unused  - 
-                                           this assignment is not present in the normal
-                                           $cvstree/linux/arch/mips/cobalt/setup.c */
-#endif
-#else
-#include "../../../../include/diagdefs.h"
-	mips_memory_upper = (unsigned long) kBootloaderMipsMemoryUpper;
-#endif
- 
-	LongVar = mips_memory_upper;
-	atag = bi_TagAdd(tag_memupper, ULONGSIZE, &LongVar);
-
-	/* Here is the machine type.
-	*/
-	LongVar = MACH_COBALT_27;
-	atag = bi_TagAdd(tag_machtype, ULONGSIZE, &LongVar);
-
-	LongVar = 0x80000000;
-	atag = bi_TagAdd(tag_memlower, ULONGSIZE, &LongVar);
-
-	LongVar = CPU_R4300;
-	atag = bi_TagAdd(tag_cputype, ULONGSIZE, &LongVar);
-
-	LongVar = MACH_GROUP_COBALT;
-	atag = bi_TagAdd(tag_machgroup, ULONGSIZE, &LongVar);
-
-	LongVar = 0;
-	atag = bi_TagAdd(tag_scache_size, ULONGSIZE, &LongVar);
-
-	LongVar = 48;
-	atag = bi_TagAdd(tag_tlb_entries, ULONGSIZE, &LongVar);
-
- 	LongVar = 0;
-	atag = bi_TagAdd(tag_drive_info, ULONGSIZE, &LongVar);
-
-	LongVar = 0xe0800000;
-	atag = bi_TagAdd(tag_vram_base, ULONGSIZE, &LongVar);
-
-	LongVar = 0;
-	atag = bi_TagAdd(tag_dummy, 0, &LongVar);
-}
-
-void AddTagsEndSymbol(void)
-{
-	short	X;
-	X = 1;
-}
-
-/*
- * Oh shit, this is so crappy ...
- */
-#include <linux/mm.h>
-#include <asm/pgtable.h>
-int my_cacheflush(unsigned long start, unsigned long size, unsigned int what)
-{
-	flush_cache_range(current->mm, start, start + size);
-	return 0;
-}
-
-
-/*
- * The ROM set the flag to 0x1 to turn off output.  This is interpreted
- * as "valid", "no kernel output", and index '0' into the following
- * tables.  We overload entry '0' to specify a sensible default rate.
- */
-static int cons_baud_int[]  = { 9600, 0,  9600, 0, 0,  115200, 0, 0 };
-static int cons_baud_baud[] = { B9600, 0, B9600, 0, 0, B115200, 0, 0 };
-
-static union cobalt_cons_info
-cobalt_get_console_info(void)
-{
-	char board_id = 0;
-	static union cobalt_cons_info cons_info;
-	static int read_info = 0;
-	extern void add_init_env(char *);
-
-	if (read_info)
-		return cons_info;
-
-	VIA_PORT_WRITE(VIA_CMOS_ADDR, VIA_CMOS_CONSOLE_FLG);
-	cons_info.ccons_char = VIA_PORT_READ(VIA_CMOS_DATA);
-
-#if 0
-	printk("cobalt_get_console_info: read 0x%x from console flag\n",
-	       cons_info.ccons_char);
-#endif
-
-	/*
-	 * CMOS hasn't been initialized or baud rate isn't known.
-	 * - read the board id and provide backwards compat.
-	 */
-	if (cons_info.ccons_bits.valid != VIA_CMOS_CONS_VALID
-	    || ! cons_baud_int[cons_info.ccons_bits.baud]
-	    || ! cons_baud_baud[cons_info.ccons_bits.baud]) {
-		pcibios_read_config_byte(0, PCI_DEVSHFT(COBALT_PCICONF_VIA),
-	                                 VIA_COBALT_BRD_ID_REG, &board_id);
-
-#if 0
-		printk("cobalt_get_console_info: read 0x%x from board config\n",
-		       board_id);
-#endif
-
-		switch (VIA_COBALT_BRD_REG_to_ID(board_id)) {
-		case COBALT_BRD_ID_QUBE1:
-			cons_info.ccons_bits.baud = VIA_CMOS_CONS_115K;
-			cons_info.ccons_bits.kout = 1;
-			break;
-		case COBALT_BRD_ID_RAQ1:
-			cons_info.ccons_bits.baud = VIA_CMOS_CONS_9600;
-			cons_info.ccons_bits.kout = 1;
-			break;
-		case COBALT_BRD_ID_QUBE2:
-			cons_info.ccons_bits.baud = VIA_CMOS_CONS_9600;
-			cons_info.ccons_bits.kout = 0;
-			break;
-		case COBALT_BRD_ID_RAQ2:
-			cons_info.ccons_bits.baud = VIA_CMOS_CONS_9600;
-			cons_info.ccons_bits.kout = 1;
-			break;
-		}
-		cons_info.ccons_bits.valid = VIA_CMOS_CONS_VALID;
-	}
-
-	read_info = 1;
-
-#if defined(DEBUG_LOADER)
-	cons_info.ccons_bits.kout = 1;
-#endif
-
-	if (!cons_info.ccons_bits.kout) {
-		add_init_env("CONSOLE=/dev/null");
-	}
-
-#if 0
-	printk("cobalt_get_console_info: returning 0x%x\n",
-		cons_info.ccons_char);
-#endif
-
-	return cons_info;
-}
-
-int
-cobalt_cons_koutok(void)
-{
-	union cobalt_cons_info cons;
-
-	cons = cobalt_get_console_info();
-
-	return cons.ccons_bits.kout;
-}
-
-int
-cobalt_cons_baudbaud(void)
-{
-	union cobalt_cons_info cons;
-
-	cons = cobalt_get_console_info();
-
-	return cons_baud_baud[cons.ccons_bits.baud];
-}
-
-int
-cobalt_cons_baudint(void)
-{
-	union cobalt_cons_info cons;
-
-	cons = cobalt_get_console_info();
-
-	return cons_baud_int[cons.ccons_bits.baud];
-}