PPC32: Updates for the 8260 embedded processor and the EST and TQM boards

12 files changed, 256 insertions, 82 deletions

diff --git a/arch/ppc/8260_io/enet.c b/arch/ppc/8260_io/enet.c
index f05960a4b98b..5e06697c88e7 100644
--- a/arch/ppc/8260_io/enet.c
+++ b/arch/ppc/8260_io/enet.c
@@ -807,7 +807,7 @@ int __init scc_enet_init(void)
 
 	/* Install our interrupt handler.
 	*/
-	request_8xxirq(SIU_INT_ENET, scc_enet_interrupt, 0, "enet", dev);
+	request_irq(SIU_INT_ENET, scc_enet_interrupt, 0, "enet", dev);
 
 	/* Set GSMR_H to enable all normal operating modes.
 	 * Set GSMR_L to enable Ethernet to MC68160.
diff --git a/arch/ppc/8260_io/fcc_enet.c b/arch/ppc/8260_io/fcc_enet.c
index ef6cdf1561f8..041b2b65de61 100644
--- a/arch/ppc/8260_io/fcc_enet.c
+++ b/arch/ppc/8260_io/fcc_enet.c
@@ -1705,12 +1705,12 @@ init_fcc_startup(fcc_info_t *fip, struct net_device *dev)
 
 	/* Install our interrupt handler.
 	*/
-	if (request_8xxirq(fip->fc_interrupt, fcc_enet_interrupt, 0,
+	if (request_irq(fip->fc_interrupt, fcc_enet_interrupt, 0,
 							"fenet", dev) < 0)
 		printk("Can't get FCC IRQ %d\n", fip->fc_interrupt);
 
 #ifdef	CONFIG_USE_MDIO
-	if (request_8xxirq(PHY_INTERRUPT, mii_link_interrupt, 0,
+	if (request_irq(PHY_INTERRUPT, mii_link_interrupt, 0,
 							"mii", dev) < 0)
 		printk("Can't get MII IRQ %d\n", fip->fc_interrupt);
 #endif	/* CONFIG_USE_MDIO */
diff --git a/arch/ppc/8260_io/uart.c b/arch/ppc/8260_io/uart.c
index f7fecd25612f..a79f85304f19 100644
--- a/arch/ppc/8260_io/uart.c
+++ b/arch/ppc/8260_io/uart.c
@@ -3,6 +3,8 @@
  *  Copyright (c) 1999 Dan Malek (dmalek@jlc.net)
  *  Copyright (c) 2000 MontaVista Software, Inc. (source@mvista.com)
  *	2.3.99 updates
+ *  Copyright (c) 2002 Allen Curtis, Ones and Zeros, Inc. (acurtis@onz.com)
+ *	2.5.50 updates
  *
  * I used the 8xx uart.c driver as the framework for this driver.
  * The original code was written for the EST8260 board.  I tried to make
@@ -28,6 +30,7 @@
 #include <linux/signal.h>
 #include <linux/sched.h>
 #include <linux/timer.h>
+#include <linux/workqueue.h>
 #include <linux/interrupt.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
@@ -69,9 +72,7 @@
 #define TX_WAKEUP	ASYNC_SHARE_IRQ
 
 static char *serial_name = "CPM UART driver";
-static char *serial_version = "0.01";
-
-static DECLARE_TASK_QUEUE(tq_serial);
+static char *serial_version = "0.02";
 
 static struct tty_driver serial_driver, callout_driver;
 static int serial_refcount;
@@ -201,8 +202,8 @@ typedef struct serial_info {
 	int			blocked_open; /* # of blocked opens */
 	long			session; /* Session of opening process */
 	long			pgrp; /* pgrp of opening process */
-	struct tq_struct	tqueue;
-	struct tq_struct	tqueue_hangup;
+	struct work_struct	tqueue;
+	struct work_struct	tqueue_hangup;
 	wait_queue_head_t	open_wait;
 	wait_queue_head_t	close_wait;
 
@@ -331,8 +332,7 @@ static _INLINE_ void rs_sched_event(ser_info_t *info,
 				  int event)
 {
 	info->event |= 1 << event;
-	queue_task(&info->tqueue, &tq_serial);
-	mark_bh(SERIAL_BH);
+	schedule_work(&info->tqueue);
 }
 
 static _INLINE_ void receive_chars(ser_info_t *info)
@@ -479,7 +479,7 @@ static _INLINE_ void receive_chars(ser_info_t *info)
 
 	info->rx_cur = (cbd_t *)bdp;
 
-	queue_task(&tty->flip.tqueue, &tq_timer);
+	schedule_delayed_work(&tty->flip.work, 1);
 }
 
 static _INLINE_ void transmit_chars(ser_info_t *info)
@@ -537,7 +537,7 @@ static _INLINE_ void check_modem_status(struct async_struct *info)
 			printk("scheduling hangup...");
 #endif
 			MOD_INC_USE_COUNT;
-			if (schedule_task(&info->tqueue_hangup) == 0)
+			if (schedule_work(&info->tqueue_hangup) == 0)
 				MOD_DEC_USE_COUNT;
 		}
 	}
@@ -628,11 +628,6 @@ static void rs_8xx_interrupt(int irq, void * dev_id, struct pt_regs * regs)
  * interrupt driver proper are done; the interrupt driver schedules
  * them using rs_sched_event(), and they get done here.
  */
-static void do_serial_bh(void)
-{
-	run_task_queue(&tq_serial);
-}
-
 static void do_softint(void *private_)
 {
 	ser_info_t	*info = (ser_info_t *) private_;
@@ -651,7 +646,7 @@ static void do_softint(void *private_)
 }
 
 /*
- * This routine is called from the scheduler tqueue when the interrupt
+ * This routine is called from the scheduler work queue when the interrupt
  * routine has signalled that a hangup has occurred.  The path of
  * hangup processing is:
  *
@@ -1308,7 +1303,7 @@ static void begin_break(ser_info_t *info)
 {
 	volatile cpm8260_t *cp;
 	uint	page, sblock;
-	ushort	num;
+	int	num;
 
 	cp = cpmp;
 
@@ -1352,7 +1347,7 @@ static void end_break(ser_info_t *info)
 {
 	volatile cpm8260_t *cp;
 	uint	page, sblock;
-	ushort	num;
+	int	num;
 
 	cp = cpmp;
 
@@ -1756,7 +1751,7 @@ static void rs_8xx_wait_until_sent(struct tty_struct *tty, int timeout)
 	 */
 	char_time = 1;
 	if (timeout)
-		char_time = min(char_time, timeout);
+		char_time = min(char_time, (unsigned long)timeout);
 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
 	printk("In rs_wait_until_sent(%d) check=%lu...", timeout, char_time);
 	printk("jiff=%lu...", jiffies);
@@ -1980,7 +1975,7 @@ static int rs_8xx_open(struct tty_struct *tty, struct file * filp)
 	ser_info_t	*info;
 	int 		retval, line;
 
-	line = MINOR(tty->device) - tty->driver.minor_start;
+	line = minor(tty->device) - tty->driver.minor_start;
 	if ((line < 0) || (line >= NR_PORTS))
 		return -ENODEV;
 	retval = get_async_struct(line, &info);
@@ -2455,7 +2450,7 @@ void kgdb_map_scc(void)
 
 static kdev_t serial_console_device(struct console *c)
 {
-	return MKDEV(TTY_MAJOR, 64 + c->index);
+	return mk_kdev(TTY_MAJOR, 64 + c->index);
 }
 
 
@@ -2503,8 +2498,6 @@ int __init rs_8xx_init(void)
 	volatile	immap_t		*immap;
 	volatile	iop8260_t	*io;
 	
-	init_bh(SERIAL_BH, do_serial_bh);
-
 	show_serial_version();
 
 	/* Initialize the tty_driver structure */
@@ -2680,10 +2673,8 @@ int __init rs_8xx_init(void)
 			init_waitqueue_head(&info->close_wait);
 			info->magic = SERIAL_MAGIC;
 			info->flags = state->flags;
-			info->tqueue.routine = do_softint;
-			info->tqueue.data = info;
-			info->tqueue_hangup.routine = do_serial_hangup;
-			info->tqueue_hangup.data = info;
+			INIT_WORK(&info->tqueue, do_softint, info);
+			INIT_WORK(&info->tqueue_hangup, do_serial_hangup, info);
 			info->line = i;
 			info->state = state;
 			state->info = (struct async_struct *)info;
@@ -2874,7 +2865,7 @@ int __init rs_8xx_init(void)
 
 			/* Install interrupt handler.
 			*/
-			request_8xxirq(state->irq, rs_8xx_interrupt, 0, "uart", info);
+			request_irq(state->irq, rs_8xx_interrupt, 0, "uart", info);
 
 			/* Set up the baud rate generator.
 			*/
diff --git a/arch/ppc/boot/simple/embed_config.c b/arch/ppc/boot/simple/embed_config.c
index f80860d892ff..7acebedfbd86 100644
--- a/arch/ppc/boot/simple/embed_config.c
+++ b/arch/ppc/boot/simple/embed_config.c
@@ -431,7 +431,7 @@ clk_8260(bd_t *bd)
 }
 #endif
 
-#ifdef CONFIG_EST8260
+#if defined(CONFIG_EST8260) || defined(CONFIG_TQM8260)
 void
 embed_config(bd_t **bdp)
 {
diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c
index 12192810db5d..52bce07df930 100644
--- a/arch/ppc/kernel/ppc_ksyms.c
+++ b/arch/ppc/kernel/ppc_ksyms.c
@@ -337,7 +337,7 @@ EXPORT_SYMBOL(cpm_free_handler);
 #if defined(CONFIG_8xx) || defined(CONFIG_4xx)
 EXPORT_SYMBOL(__res);
 #endif
-#if defined(CONFIG_8xx) || defined(CONFIG_8260)
+#if defined(CONFIG_8xx)
 EXPORT_SYMBOL(request_8xxirq);
 #endif
 
diff --git a/arch/ppc/platforms/Makefile b/arch/ppc/platforms/Makefile
index 4c39c6416963..a63cd434abc1 100644
--- a/arch/ppc/platforms/Makefile
+++ b/arch/ppc/platforms/Makefile
@@ -28,6 +28,8 @@ obj-$(CONFIG_PMAC_PBOOK)	+= sleep.o
 obj-$(CONFIG_PPC_RTAS)		+= error_log.o proc_rtas.o
 obj-$(CONFIG_PREP_RESIDUAL)	+= residual.o
 obj-$(CONFIG_ADIR)		+= adir_setup.o adir_pic.o adir_pci.o
+obj-$(CONFIG_EST8260)		+= est8260_setup.o
+obj-$(CONFIG_TQM8260)		+= tqm8260_setup.o
 obj-$(CONFIG_EV64260)		+= ev64260_setup.o
 obj-$(CONFIG_GEMINI)		+= gemini_pci.o gemini_setup.o gemini_prom.o
 obj-$(CONFIG_K2)		+= k2_setup.o k2_pci.o
diff --git a/arch/ppc/platforms/est8260.h b/arch/ppc/platforms/est8260.h
index 8ca998af51c5..14a9c0256380 100644
--- a/arch/ppc/platforms/est8260.h
+++ b/arch/ppc/platforms/est8260.h
@@ -3,8 +3,12 @@
  * will soon be removed.  All of the clock values are computed from
  * the configuration SCMR and the Power-On-Reset word.
  */
+#ifndef __EST8260_PLATFORM
+#define __EST8260_PLATFORM
 
-#define IMAP_ADDR	((uint)0xf0000000)
+#define IMAP_ADDR		((uint)0xf0000000)
+
+#define BOOTROM_RESTART_ADDR	((uint)0xff000104)
 
 
 /* A Board Information structure that is given to a program when
@@ -25,3 +29,4 @@ typedef struct bd_info {
 
 extern bd_t m8xx_board_info;
 
+#endif 	/* __EST8260_PLATFORM */
diff --git a/arch/ppc/platforms/est8260_setup.c b/arch/ppc/platforms/est8260_setup.c
new file mode 100644
index 000000000000..3aeecfc03a13
--- /dev/null
+++ b/arch/ppc/platforms/est8260_setup.c
@@ -0,0 +1,65 @@
+/*
+ * arch/ppc/platforms/est8260_setup.c
+ * 
+ * EST8260 platform support
+ *
+ * Author: Allen Curtis <acurtis@onz.com>
+ * Derived from: m8260_setup.c by Dan Malek, MVista
+ *
+ * Copyright 2002 Ones and Zeros, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/seq_file.h>
+
+#include <asm/mpc8260.h>
+#include <asm/machdep.h>
+
+static void (*callback_setup_arch)(void);
+
+extern unsigned char __res[sizeof(bd_t)];
+
+extern void m8260_init(unsigned long r3, unsigned long r4, 
+	unsigned long r5, unsigned long r6, unsigned long r7);
+
+static int
+est8260_show_cpuinfo(struct seq_file *m)
+{
+	bd_t	*binfo = (bd_t *)__res;
+
+	seq_printf(m, "vendor\t\t: EST Corporation\n"
+		      "machine\t\t: SBC8260 PowerPC\n"
+		      "\n"
+		      "mem size\t\t: 0x%08x\n"
+		      "console baud\t\t: %d\n"
+		      "\n",
+		      binfo->bi_memsize,
+		      binfo->bi_baudrate);
+	return 0;
+}
+
+static void __init
+est8260_setup_arch(void)
+{
+	printk("EST SBC8260 Port\n");
+	callback_setup_arch();
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	      unsigned long r6, unsigned long r7)
+{
+	/* Generic 8260 platform initialization */
+	m8260_init(r3, r4, r5, r6, r7);
+
+	/* Anything special for this platform */
+	ppc_md.show_cpuinfo	= est8260_show_cpuinfo;
+
+	callback_setup_arch	= ppc_md.setup_arch;
+	ppc_md.setup_arch	= est8260_setup_arch;
+}
diff --git a/arch/ppc/platforms/mpc82xx.h b/arch/ppc/platforms/mpc82xx.h
new file mode 100644
index 000000000000..02101b3b19e5
--- /dev/null
+++ b/arch/ppc/platforms/mpc82xx.h
@@ -0,0 +1,42 @@
+/*
+ * arch/ppc/platforms/mpc82xx.h
+ * 
+ * Board specific support for various 82xx platforms.
+ *
+ * Author: Allen Curtis <acurtis@onz.com>
+ *
+ * Copyright 2002 Ones and Zeros, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#ifndef __CONFIG_82XX_PLATFORMS
+#define __CONFIG_82XX_PLATFORMS
+
+#ifdef CONFIG_8260
+
+#ifdef CONFIG_EST8260
+#include <platforms/est8260.h>
+#endif
+
+#ifdef CONFIG_SBS8260
+#include <platforms/sbs8260.h>
+#endif
+
+#ifdef CONFIG_RPX6
+#include <platforms/rpxsuper.h>
+#endif
+
+#ifdef CONFIG_WILLOW
+#include <platforms/willow.h>
+#endif
+
+#ifdef CONFIG_TQM8260
+#include <platforms/tqm8260.h>
+#endif
+
+#endif	/* CONFIG_8260 */
+
+#endif
diff --git a/arch/ppc/platforms/tqm8260.h b/arch/ppc/platforms/tqm8260.h
index c166f3e74115..dc463c0a6647 100644
--- a/arch/ppc/platforms/tqm8260.h
+++ b/arch/ppc/platforms/tqm8260.h
@@ -4,8 +4,8 @@
  * Copyright (c) 2001 Wolfgang Denk (wd@denx.de)
  */
 
-#ifndef __MACH_TQM8260_H
-#define __MACH_TQM8260_H
+#ifndef __TQM8260_PLATFORM
+#define __TQM8260_PLATFORM
 
 #include <linux/config.h>
  
@@ -14,4 +14,6 @@
 #define IMAP_ADDR		((uint)0xFFF00000)
 #define PHY_INTERRUPT		25
 
-#endif	/* __MACH_TQM8260_H */
+#define BOOTROM_RESTART_ADDR	((uint)0x40000104)
+
+#endif	/* __TQM8260_PLATFORM */
diff --git a/arch/ppc/platforms/tqm8260_setup.c b/arch/ppc/platforms/tqm8260_setup.c
new file mode 100644
index 000000000000..759c62eda53d
--- /dev/null
+++ b/arch/ppc/platforms/tqm8260_setup.c
@@ -0,0 +1,79 @@
+/*
+ * arch/ppc/platforms/tqm8260_setup.c
+ * 
+ * TQM8260 platform support
+ *
+ * Author: Allen Curtis <acurtis@onz.com>
+ * Derived from: m8260_setup.c by Dan Malek, MVista
+ *
+ * Copyright 2002 Ones and Zeros, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/seq_file.h>
+
+#include <asm/immap_8260.h>
+#include <asm/mpc8260.h>
+#include <asm/machdep.h>
+
+static void (*callback_setup_arch)(void);
+
+extern unsigned char __res[sizeof(bd_t)];
+
+extern void m8260_init(unsigned long r3, unsigned long r4, 
+	unsigned long r5, unsigned long r6, unsigned long r7);
+
+static int
+tqm8260_show_cpuinfo(struct seq_file *m)
+{
+	bd_t	*binfo = (bd_t *)__res;
+
+	seq_printf(m, "vendor\t\t: IN2 Systems\n"
+		      "machine\t\t: TQM8260 PowerPC\n"
+		      "mem size\t\t: 0x%08x\n"
+		      "\n",
+		      binfo->bi_memsize);
+	return 0;
+}
+
+static int
+tqm8260_set_rtc_time(unsigned long time)
+{
+	((immap_t *)IMAP_ADDR)->im_sit.sit_tmcnt = time;
+	((immap_t *)IMAP_ADDR)->im_sit.sit_tmcntsc = 0x3;
+
+	return(0);
+}
+
+static unsigned long
+tqm8260_get_rtc_time(void)
+{
+	return ((immap_t *)IMAP_ADDR)->im_sit.sit_tmcnt;
+}
+
+static void __init
+tqm8260_setup_arch(void)
+{
+	printk("IN2 Systems TQM8260 port\n");
+	callback_setup_arch();
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	      unsigned long r6, unsigned long r7)
+{
+	/* Generic 8260 platform initialization */
+	m8260_init(r3, r4, r5, r6, r7);
+
+	/* Anything special for this platform */
+	ppc_md.show_cpuinfo	= tqm8260_show_cpuinfo;
+	ppc_md.set_rtc_time	= tqm8260_set_rtc_time;
+	ppc_md.get_rtc_time	= tqm8260_get_rtc_time;
+
+	callback_setup_arch	= ppc_md.setup_arch;
+	ppc_md.setup_arch	= tqm8260_setup_arch;
diff --git a/arch/ppc/syslib/m8260_setup.c b/arch/ppc/syslib/m8260_setup.c
index 93456f6cf6d5..3d0148b4b787 100644
--- a/arch/ppc/syslib/m8260_setup.c
+++ b/arch/ppc/syslib/m8260_setup.c
@@ -63,16 +63,6 @@ m8260_setup_arch(void)
 	m8260_cpm_reset();
 }
 
-static 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.
  */
@@ -93,30 +83,27 @@ m8260_calibrate_decr(void)
  */
 static uint rtc_time;
 
-static static int
+static int
 m8260_set_rtc_time(unsigned long time)
 {
-#ifdef CONFIG_TQM8260
-	((immap_t *)IMAP_ADDR)->im_sit.sit_tmcnt = time;
-	((immap_t *)IMAP_ADDR)->im_sit.sit_tmcntsc = 0x3;
-#else
 	rtc_time = time;
-#endif
+
 	return(0);
 }
 
 static unsigned long
 m8260_get_rtc_time(void)
 {
-#ifdef CONFIG_TQM8260
-	return ((immap_t *)IMAP_ADDR)->im_sit.sit_tmcnt;
-#else
 	/* Get time from the RTC.
 	*/
 	return((unsigned long)rtc_time);
-#endif
 }
 
+#ifndef BOOTROM_RESTART_ADDR
+#warning "Using default BOOTROM_RESTART_ADDR!"
+#define BOOTROM_RESTART_ADDR	0xff000104
+#endif
+
 static void
 m8260_restart(char *cmd)
 {
@@ -127,32 +114,28 @@ m8260_restart(char *cmd)
 	 * of the reset vector.  If that doesn't work for you, change this
 	 * or the reboot program to send a proper address.
 	 */
-#ifdef CONFIG_TQM8260
-	startaddr = 0x40000104;
-#else
-	startaddr = 0xff000104;
-#endif
+	startaddr = BOOTROM_RESTART_ADDR;
 	if (cmd != NULL) {
 		if (!strncmp(cmd, "startaddr=", 10))
 			startaddr = simple_strtoul(&cmd[10], NULL, 0);
 	}
 
-	m8260_gorom((unsigned int)__pa(__res), startaddr);
+	m8260_gorom((void*)__pa(__res), startaddr);
 }
 
 static void
-m8260_power_off(void)
+m8260_halt(void)
 {
-   m8260_restart(NULL);
+	local_irq_disable();
+	while (1);
 }
 
 static void
-m8260_halt(void)
+m8260_power_off(void)
 {
-   m8260_restart(NULL);
+	m8260_halt();
 }
 
-
 static int
 m8260_show_percpuinfo(struct seq_file *m, int i)
 {
@@ -181,9 +164,6 @@ 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;
 
@@ -194,7 +174,6 @@ m8260_init_IRQ(void)
 	immr->im_intctl.ic_siprr = 0x05309770;
 	immr->im_intctl.ic_scprrh = 0x05309770;
 	immr->im_intctl.ic_scprrl = 0x05309770;
-
 }
 
 /*
@@ -219,12 +198,29 @@ m8260_find_end_of_memory(void)
 static void __init
 m8260_map_io(void)
 {
-	io_block_mapping(0xf0000000, 0xf0000000, 0x10000000, _PAGE_IO);
-	io_block_mapping(0xe0000000, 0xe0000000, 0x10000000, _PAGE_IO);
+	uint addr;
+
+	/* Map IMMR region to a 256MB BAT */
+	addr = (immr != NULL) ? (uint)immr : IMAP_ADDR;
+	io_block_mapping(addr, addr, 0x10000000, _PAGE_IO);
+
+	/* Map I/O region to a 256MB BAT */
+	io_block_mapping(IO_VIRT_ADDR, IO_PHYS_ADDR, 0x10000000, _PAGE_IO);
 }
 
+/* Inputs:
+ *   r3 - Optional pointer to a board information structure.
+ *   r4 - Optional pointer to the physical starting address of the init RAM
+ *        disk.
+ *   r5 - Optional pointer to the physical ending address of the init RAM
+ *        disk.
+ *   r6 - Optional pointer to the physical starting address of any kernel
+ *        command-line parameters.
+ *   r7 - Optional pointer to the physical ending address of any kernel
+ *        command-line parameters.
+ */
 void __init
-platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+m8260_init(unsigned long r3, unsigned long r4, unsigned long r5,
 	      unsigned long r6, unsigned long r7)
 {
 	parse_bootinfo(find_bootinfo());
@@ -265,11 +261,3 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 	ppc_md.setup_io_mappings	= m8260_map_io;
 }
 
-/* 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");
-}