[Blackfin][PATCH] code cleanup

8 files changed, 177 insertions, 180 deletions

diff --git a/cpu/bf533/bf533_serial.h b/cpu/bf533/bf533_serial.h
index 82fcd57..0a04f3e 100644
--- a/cpu/bf533/bf533_serial.h
+++ b/cpu/bf533/bf533_serial.h
@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2005 blackfin.uclinux.org
  *
- * This file is based on 
+ * This file is based on
  * bf533_serial.h: Definitions for the BlackFin BF533 DSP serial driver.
  * Copyright (C) 2003	Bas Vermeulen <bas@buyways.nl>
  * 			BuyWays B.V. (www.buyways.nl)
diff --git a/cpu/bf533/cache.S b/cpu/bf533/cache.S
index d2b34a9..5dcc24f 100644
--- a/cpu/bf533/cache.S
+++ b/cpu/bf533/cache.S
@@ -68,7 +68,7 @@ ENTRY(_invalidate_entire_icache)
 	(R7:5) =[SP++];
 	RTS;
 
-/* 
+/*
  * Invalidate the Entire Data cache by
  * clearing DMC[1:0] bits
  */
@@ -80,7 +80,7 @@ ENTRY(_dcache_invalidate)
 	P0.H = (DMEM_CONTROL >> 16);
 	R7 =[P0];
 
-/* 
+/*
  * Clear the DMC[1:0] bits, All valid bits in the data
  * cache are set to the invalid state
  */
@@ -118,7 +118,7 @@ ENTRY(_blackfin_dcache_invalidate_range)
 	CC = P0 < P1(iu);
 	IF CC JUMP 1b(bp);
 
-/* 
+/*
  * If the data crosses a cache line, then we'll be pointing to
  * the last cache line, but won't have flushed/invalidated it yet, so do
  * one more.
diff --git a/cpu/bf533/flush.S b/cpu/bf533/flush.S
index 8010f72..58fe4c8 100644
--- a/cpu/bf533/flush.S
+++ b/cpu/bf533/flush.S
@@ -95,7 +95,7 @@ ENTRY(_icplb_flush)
 	 * R0 = Page start
 	 * R1 = Page length (actually, offset into size/prefix tables)
 	 * R3 = sub-bank deposit values
-  	 *
+	 *
 	 * The cache has 2 Ways, and 64 sets, so we iterate through
 	 * the sets, accessing the tag for each Way, for our Bank and
 	 * sub-bank, looking for dirty, valid tags that match our
@@ -142,7 +142,7 @@ ifs0:	R6 = R5 << 5;		/* Combine set*/
 	IF !CC JUMP ifskip;	/* Skip it if it doesn't match.*/
 
 	/* Tag address matches against page, so this is an entry
-	 * we must flush. 
+	 * we must flush.
 	 */
 
 	R7 >>= 10;		/* Mask off the non-address bits*/
@@ -185,7 +185,7 @@ ieall: NOP;
 	SSYNC;
 	JUMP ifinished;
 
-/* This is an external function being called by the user 
+/* This is an external function being called by the user
  * application through __flush_cache_all. Currently this function
  * serves the purpose of flushing all the pending writes in
  * in the data cache.
@@ -222,7 +222,7 @@ skip:	R6 += -1;
 
 /* This is an internal function to flush all pending
  * writes in the cache associated with a particular DCPLB.
- * 
+ *
  * R0 -  page's start address
  * R1 -  CPLB's data field.
  */
@@ -260,7 +260,7 @@ ENTRY(_dcplb_flush)
 	/* The page could be mapped into Bank A or Bank B, depending
 	 * on (a) whether both banks are configured as cache, and
 	 * (b) on whether address bit A[x] is set. x is determined
-	 * by DCBS in DMEM_CONTROL		
+	 * by DCBS in DMEM_CONTROL
 	 */
 	
 	R2 = 0;			/* Default to Bank A (Bank B would be 1)*/
diff --git a/cpu/bf533/init_sdram.S b/cpu/bf533/init_sdram.S
index d92c877..1aae9e3 100644
--- a/cpu/bf533/init_sdram.S
+++ b/cpu/bf533/init_sdram.S
@@ -28,17 +28,17 @@ init_sdram:
 	[--SP] = (R7:0);
 	[--SP] = (P5:0);
 
-#if (BFIN_BOOT_MODE == BF533_SPI_BOOT) 
+#if (BFIN_BOOT_MODE == BF533_SPI_BOOT)
 	p0.h = hi(SPI_BAUD);
 	p0.l = lo(SPI_BAUD);
 	r0.l = CONFIG_SPI_BAUD;
 	w[p0] = r0.l;
-    SSYNC;
+	SSYNC;
 #endif
 
 	/*
-         * PLL_LOCKCNT - how many SCLK Cycles to delay while PLL becomes stable
-         */
+	 * PLL_LOCKCNT - how many SCLK Cycles to delay while PLL becomes stable
+	 */
 	p0.h = hi(PLL_LOCKCNT);
 	p0.l = lo(PLL_LOCKCNT);
 	r0 = 0x300(Z);
@@ -46,43 +46,43 @@ init_sdram:
 	ssync;
 
 	/*
-         * Put SDRAM in self-refresh, incase anything is running
-         */
-        P2.H = hi(EBIU_SDGCTL);
-        P2.L = lo(EBIU_SDGCTL);
-        R0 = [P2];
-        BITSET (R0, 24);
-        [P2] = R0;
-        SSYNC;
-
-        /*
-         *  Set PLL_CTL with the value that we calculate in R0
-         *   - [14:09] = MSEL[5:0] : CLKIN / VCO multiplication factors
-         *   - [8]     = BYPASS    : BYPASS the PLL, run CLKIN into CCLK/SCLK
-         *   - [7]     = output delay (add 200ps of delay to mem signals)
-         *   - [6]     = input delay (add 200ps of input delay to mem signals)
-         *   - [5]     = PDWN      : 1=All Clocks off
-         *   - [3]     = STOPCK    : 1=Core Clock off
-         *   - [1]     = PLL_OFF   : 1=Disable Power to PLL
-         *   - [0]     = DF        : 1=Pass CLKIN/2 to PLL / 0=Pass CLKIN to PLL
-         *   all other bits set to zero
-         */
-
-        r0 = CONFIG_VCO_MULT & 63;      /* Load the VCO multiplier         */
-        r0 = r0 << 9;                   /* Shift it over,                  */
-        r1 = CONFIG_CLKIN_HALF;        /* Do we need to divide CLKIN by 2?*/
-        r0 = r1 | r0;
-        r1 = CONFIG_PLL_BYPASS;         /* Bypass the PLL?                 */
-        r1 = r1 << 8;                   /* Shift it over                   */
-        r0 = r1 | r0;                   /* add them all together           */
-
-        p0.h = hi(PLL_CTL);
-        p0.l = lo(PLL_CTL);             /* Load the address                */
-        cli r2;                         /* Disable interrupts              */
+	 * Put SDRAM in self-refresh, incase anything is running
+	 */
+	P2.H = hi(EBIU_SDGCTL);
+	P2.L = lo(EBIU_SDGCTL);
+	R0 = [P2];
+	BITSET (R0, 24);
+	[P2] = R0;
+	SSYNC;
+
+	/*
+	 *  Set PLL_CTL with the value that we calculate in R0
+	 *   - [14:09] = MSEL[5:0] : CLKIN / VCO multiplication factors
+	 *   - [8]     = BYPASS    : BYPASS the PLL, run CLKIN into CCLK/SCLK
+	 *   - [7]     = output delay (add 200ps of delay to mem signals)
+	 *   - [6]     = input delay (add 200ps of input delay to mem signals)
+	 *   - [5]     = PDWN      : 1=All Clocks off
+	 *   - [3]     = STOPCK    : 1=Core Clock off
+	 *   - [1]     = PLL_OFF   : 1=Disable Power to PLL
+	 *   - [0]     = DF        : 1=Pass CLKIN/2 to PLL / 0=Pass CLKIN to PLL
+	 *   all other bits set to zero
+	 */
+
+	r0 = CONFIG_VCO_MULT & 63;	/* Load the VCO multiplier         */
+	r0 = r0 << 9;			/* Shift it over,                  */
+	r1 = CONFIG_CLKIN_HALF;		/* Do we need to divide CLKIN by 2?*/
+	r0 = r1 | r0;
+	r1 = CONFIG_PLL_BYPASS;		/* Bypass the PLL?                 */
+	r1 = r1 << 8;			/* Shift it over                   */
+	r0 = r1 | r0;			/* add them all together           */
+
+	p0.h = hi(PLL_CTL);
+	p0.l = lo(PLL_CTL);		/* Load the address                */
+	cli r2;				/* Disable interrupts              */
 	ssync;
-        w[p0] = r0.l;                   /* Set the value                   */
-        idle;                           /* Wait for the PLL to stablize    */
-        sti r2;                         /* Enable interrupts               */
+	w[p0] = r0.l;			/* Set the value                   */
+	idle;				/* Wait for the PLL to stablize    */
+	sti r2;				/* Enable interrupts               */
 
 check_again:
 	p0.h = hi(PLL_STAT);
@@ -92,46 +92,46 @@ check_again:
 	if ! CC jump check_again;
 
 	/* Configure SCLK & CCLK Dividers */
-       	r0 = (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV);
-        p0.h = hi(PLL_DIV);
-        p0.l = lo(PLL_DIV);
-        w[p0] = r0.l;
-        ssync;
+	r0 = (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV);
+	p0.h = hi(PLL_DIV);
+	p0.l = lo(PLL_DIV);
+	w[p0] = r0.l;
+	ssync;
 
 	/*
-         * We now are running at speed, time to set the Async mem bank wait states
+	 * We now are running at speed, time to set the Async mem bank wait states
 	 * This will speed up execution, since we are normally running from FLASH.
 	 */
 
-        p2.h = (EBIU_AMBCTL1 >> 16);
-        p2.l = (EBIU_AMBCTL1 & 0xFFFF);
-        r0.h = (AMBCTL1VAL >> 16);
-        r0.l = (AMBCTL1VAL & 0xFFFF);
-        [p2] = r0;
-        ssync;
-
-        p2.h = (EBIU_AMBCTL0 >> 16);
-        p2.l = (EBIU_AMBCTL0 & 0xFFFF);
-        r0.h = (AMBCTL0VAL >> 16);
-        r0.l = (AMBCTL0VAL & 0xFFFF);
-        [p2] = r0;
-        ssync;
-
-        p2.h = (EBIU_AMGCTL >> 16);
-        p2.l = (EBIU_AMGCTL & 0xffff);
-        r0 = AMGCTLVAL;
-        w[p2] = r0;
-        ssync;
+	p2.h = (EBIU_AMBCTL1 >> 16);
+	p2.l = (EBIU_AMBCTL1 & 0xFFFF);
+	r0.h = (AMBCTL1VAL >> 16);
+	r0.l = (AMBCTL1VAL & 0xFFFF);
+	[p2] = r0;
+	ssync;
+	
+	p2.h = (EBIU_AMBCTL0 >> 16);
+	p2.l = (EBIU_AMBCTL0 & 0xFFFF);
+	r0.h = (AMBCTL0VAL >> 16);
+	r0.l = (AMBCTL0VAL & 0xFFFF);
+	[p2] = r0;
+	ssync;
+	
+	p2.h = (EBIU_AMGCTL >> 16);
+	p2.l = (EBIU_AMGCTL & 0xffff);
+	r0 = AMGCTLVAL;
+	w[p2] = r0;
+	ssync;
 
 	/*
 	 * Now, Initialize the SDRAM,
 	 * start with the SDRAM Refresh Rate Control Register
-         */
+	 */
 	p0.l = lo(EBIU_SDRRC);
-        p0.h = hi(EBIU_SDRRC);
-        r0 = mem_SDRRC;
-        w[p0] = r0.l;
-        ssync;
+	p0.h = hi(EBIU_SDRRC);
+	r0 = mem_SDRRC;
+	w[p0] = r0.l;
+	ssync;
 
 	/*
 	 * SDRAM Memory Bank Control Register - bank specific parameters
@@ -147,29 +147,29 @@ check_again:
 	 * Disable self-refresh
 	 */
 	P2.H = hi(EBIU_SDGCTL);
-        P2.L = lo(EBIU_SDGCTL);
-        R0 = [P2];
-        BITCLR (R0, 24);
+	P2.L = lo(EBIU_SDGCTL);
+	R0 = [P2];
+	BITCLR (R0, 24);
 
 	/*
-         * Check if SDRAM is already powered up, if it is, enable self-refresh
-         */
+	 * Check if SDRAM is already powered up, if it is, enable self-refresh
+	 */
 	p0.h = hi(EBIU_SDSTAT);
 	p0.l = lo(EBIU_SDSTAT);
 	r2.l = w[p0];
 	cc = bittst(r2,3);
 	if !cc jump skip;
-    	NOP;
+	NOP;
 	BITSET (R0, 23);
 skip:
 	[P2] = R0;
-        SSYNC;
+	SSYNC;
 
 	/* Write in the new value in the register */
-        R0.L = lo(mem_SDGCTL);
-        R0.H = hi(mem_SDGCTL);
+	R0.L = lo(mem_SDGCTL);
+	R0.H = hi(mem_SDGCTL);
 	[P2] = R0;
-        SSYNC;
+	SSYNC;
 	nop;
 
 	(P5:0) = [SP++];
@@ -177,4 +177,3 @@ skip:
 	RETS   = [SP++];
 	ASTAT  = [SP++];
 	RTS;
-
diff --git a/cpu/bf533/init_sdram_bootrom_initblock.S b/cpu/bf533/init_sdram_bootrom_initblock.S
index 67074f9..21cfeec 100644
--- a/cpu/bf533/init_sdram_bootrom_initblock.S
+++ b/cpu/bf533/init_sdram_bootrom_initblock.S
@@ -28,17 +28,17 @@ init_sdram:
 	[--SP] = (R7:0);
 	[--SP] = (P5:0);
 
-#if (BFIN_BOOT_MODE == BF533_SPI_BOOT) 
+#if (BFIN_BOOT_MODE == BF533_SPI_BOOT)
 	p0.h = hi(SPI_BAUD);
 	p0.l = lo(SPI_BAUD);
 	r0.l = CONFIG_SPI_BAUD_INITBLOCK;
 	w[p0] = r0.l;
-    SSYNC;
+	SSYNC;
 #endif
 
 	/*
-         * PLL_LOCKCNT - how many SCLK Cycles to delay while PLL becomes stable
-         */
+	 * PLL_LOCKCNT - how many SCLK Cycles to delay while PLL becomes stable
+	 */
 	p0.h = hi(PLL_LOCKCNT);
 	p0.l = lo(PLL_LOCKCNT);
 	r0 = 0x300(Z);
@@ -46,43 +46,43 @@ init_sdram:
 	ssync;
 
 	/*
-         * Put SDRAM in self-refresh, incase anything is running
-         */
-        P2.H = hi(EBIU_SDGCTL);
-        P2.L = lo(EBIU_SDGCTL);
-        R0 = [P2];
-        BITSET (R0, 24);
-        [P2] = R0;
-        SSYNC;
-
-        /*
-         *  Set PLL_CTL with the value that we calculate in R0
-         *   - [14:09] = MSEL[5:0] : CLKIN / VCO multiplication factors
-         *   - [8]     = BYPASS    : BYPASS the PLL, run CLKIN into CCLK/SCLK
-         *   - [7]     = output delay (add 200ps of delay to mem signals)
-         *   - [6]     = input delay (add 200ps of input delay to mem signals)
-         *   - [5]     = PDWN      : 1=All Clocks off
-         *   - [3]     = STOPCK    : 1=Core Clock off
-         *   - [1]     = PLL_OFF   : 1=Disable Power to PLL
-         *   - [0]     = DF        : 1=Pass CLKIN/2 to PLL / 0=Pass CLKIN to PLL
-         *   all other bits set to zero
-         */
-
-        r0 = CONFIG_VCO_MULT & 63;      /* Load the VCO multiplier         */
-        r0 = r0 << 9;                   /* Shift it over,                  */
-        r1 = CONFIG_CLKIN_HALF;        /* Do we need to divide CLKIN by 2?*/
-        r0 = r1 | r0;
-        r1 = CONFIG_PLL_BYPASS;         /* Bypass the PLL?                 */
-        r1 = r1 << 8;                   /* Shift it over                   */
-        r0 = r1 | r0;                   /* add them all together           */
-
-        p0.h = hi(PLL_CTL);
-        p0.l = lo(PLL_CTL);             /* Load the address                */
-        cli r2;                         /* Disable interrupts              */
+	 * Put SDRAM in self-refresh, incase anything is running
+	 */
+	P2.H = hi(EBIU_SDGCTL);
+	P2.L = lo(EBIU_SDGCTL);
+	R0 = [P2];
+	BITSET (R0, 24);
+	[P2] = R0;
+	SSYNC;
+
+	/*
+	 *  Set PLL_CTL with the value that we calculate in R0
+	 *   - [14:09] = MSEL[5:0] : CLKIN / VCO multiplication factors
+	 *   - [8]     = BYPASS    : BYPASS the PLL, run CLKIN into CCLK/SCLK
+	 *   - [7]     = output delay (add 200ps of delay to mem signals)
+	 *   - [6]     = input delay (add 200ps of input delay to mem signals)
+	 *   - [5]     = PDWN      : 1=All Clocks off
+	 *   - [3]     = STOPCK    : 1=Core Clock off
+	 *   - [1]     = PLL_OFF   : 1=Disable Power to PLL
+	 *   - [0]     = DF        : 1=Pass CLKIN/2 to PLL / 0=Pass CLKIN to PLL
+	 *   all other bits set to zero
+	 */
+
+	r0 = CONFIG_VCO_MULT & 63;	/* Load the VCO multiplier         */
+	r0 = r0 << 9;			/* Shift it over,                  */
+	r1 = CONFIG_CLKIN_HALF;		/* Do we need to divide CLKIN by 2?*/
+	r0 = r1 | r0;
+	r1 = CONFIG_PLL_BYPASS;		/* Bypass the PLL?                 */
+	r1 = r1 << 8;			/* Shift it over                   */
+	r0 = r1 | r0;			/* add them all together           */
+
+	p0.h = hi(PLL_CTL);
+	p0.l = lo(PLL_CTL);		/* Load the address                */
+	cli r2;				/* Disable interrupts              */
 	ssync;
-        w[p0] = r0.l;                   /* Set the value                   */
-        idle;                           /* Wait for the PLL to stablize    */
-        sti r2;                         /* Enable interrupts               */
+	w[p0] = r0.l;			/* Set the value                   */
+	idle;				/* Wait for the PLL to stablize    */
+	sti r2;				/* Enable interrupts               */
 
 check_again:
 	p0.h = hi(PLL_STAT);
@@ -92,46 +92,46 @@ check_again:
 	if ! CC jump check_again;
 
 	/* Configure SCLK & CCLK Dividers */
-       	r0 = (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV);
-        p0.h = hi(PLL_DIV);
-        p0.l = lo(PLL_DIV);
-        w[p0] = r0.l;
-        ssync;
+	r0 = (CONFIG_CCLK_ACT_DIV | CONFIG_SCLK_DIV);
+	p0.h = hi(PLL_DIV);
+	p0.l = lo(PLL_DIV);
+	w[p0] = r0.l;
+	ssync;
 
 	/*
-         * We now are running at speed, time to set the Async mem bank wait states
+	 * We now are running at speed, time to set the Async mem bank wait states
 	 * This will speed up execution, since we are normally running from FLASH.
 	 */
 
-        p2.h = (EBIU_AMBCTL1 >> 16);
-        p2.l = (EBIU_AMBCTL1 & 0xFFFF);
-        r0.h = (AMBCTL1VAL >> 16);
-        r0.l = (AMBCTL1VAL & 0xFFFF);
-        [p2] = r0;
-        ssync;
-
-        p2.h = (EBIU_AMBCTL0 >> 16);
-        p2.l = (EBIU_AMBCTL0 & 0xFFFF);
-        r0.h = (AMBCTL0VAL >> 16);
-        r0.l = (AMBCTL0VAL & 0xFFFF);
-        [p2] = r0;
-        ssync;
-
-        p2.h = (EBIU_AMGCTL >> 16);
-        p2.l = (EBIU_AMGCTL & 0xffff);
-        r0 = AMGCTLVAL;
-        w[p2] = r0;
-        ssync;
+	p2.h = (EBIU_AMBCTL1 >> 16);
+	p2.l = (EBIU_AMBCTL1 & 0xFFFF);
+	r0.h = (AMBCTL1VAL >> 16);
+	r0.l = (AMBCTL1VAL & 0xFFFF);
+	[p2] = r0;
+	ssync;
+	
+	p2.h = (EBIU_AMBCTL0 >> 16);
+	p2.l = (EBIU_AMBCTL0 & 0xFFFF);
+	r0.h = (AMBCTL0VAL >> 16);
+	r0.l = (AMBCTL0VAL & 0xFFFF);
+	[p2] = r0;
+	ssync;
+	
+	p2.h = (EBIU_AMGCTL >> 16);
+	p2.l = (EBIU_AMGCTL & 0xffff);
+	r0 = AMGCTLVAL;
+	w[p2] = r0;
+	ssync;
 
 	/*
 	 * Now, Initialize the SDRAM,
 	 * start with the SDRAM Refresh Rate Control Register
-         */
+	 */
 	p0.l = lo(EBIU_SDRRC);
-        p0.h = hi(EBIU_SDRRC);
-        r0 = mem_SDRRC;
-        w[p0] = r0.l;
-        ssync;
+	p0.h = hi(EBIU_SDRRC);
+	r0 = mem_SDRRC;
+	w[p0] = r0.l;
+	ssync;
 
 	/*
 	 * SDRAM Memory Bank Control Register - bank specific parameters
@@ -147,35 +147,33 @@ check_again:
 	 * Disable self-refresh
 	 */
 	P2.H = hi(EBIU_SDGCTL);
-        P2.L = lo(EBIU_SDGCTL);
-        R0 = [P2];
-        BITCLR (R0, 24);
+	P2.L = lo(EBIU_SDGCTL);
+	R0 = [P2];
+	BITCLR (R0, 24);
 
 	/*
-         * Check if SDRAM is already powered up, if it is, enable self-refresh
-         */
+	 * Check if SDRAM is already powered up, if it is, enable self-refresh
+	 */
 	p0.h = hi(EBIU_SDSTAT);
 	p0.l = lo(EBIU_SDSTAT);
 	r2.l = w[p0];
 	cc = bittst(r2,3);
 	if !cc jump skip;
-    	NOP;
+	NOP;
 	BITSET (R0, 23);
 skip:
 	[P2] = R0;
-        SSYNC;
+	SSYNC;
 
 	/* Write in the new value in the register */
-        R0.L = lo(mem_SDGCTL);
-        R0.H = hi(mem_SDGCTL);
+	R0.L = lo(mem_SDGCTL);
+	R0.H = hi(mem_SDGCTL);
 	[P2] = R0;
-        SSYNC;
+	SSYNC;
 	nop;
 
-	
 	(P5:0) = [SP++];
 	(R7:0) = [SP++];
 	RETS   = [SP++];
 	ASTAT  = [SP++];
 	RTS;
-
diff --git a/cpu/bf533/interrupt.S b/cpu/bf533/interrupt.S
index a5de96b..524da8f 100644
--- a/cpu/bf533/interrupt.S
+++ b/cpu/bf533/interrupt.S
@@ -95,7 +95,7 @@ _evt_rst:
 	sp += 12;
 
 _evt_rst_exit:
-	rtn; 
+	rtn;
 
 irq_panic:
 	r0 = IRQ_EVX;
@@ -134,7 +134,7 @@ _evt_evt7:
 
 evt_evt7_exit:
 	RESTORE_CONTEXT
-	rti; 
+	rti;
 
 .global _evt_evt8
 _evt_evt8:
diff --git a/cpu/bf533/start.S b/cpu/bf533/start.S
index 8e2d725..3a31e2f 100644
--- a/cpu/bf533/start.S
+++ b/cpu/bf533/start.S
@@ -32,7 +32,7 @@
 
 /*
  * Note: A change in this file subsequently requires a change in
- *       board/$(board_name)/config.mk for a valid u-boot.bin 
+ *       board/$(board_name)/config.mk for a valid u-boot.bin
  */
 
 #define ASSEMBLY
@@ -152,10 +152,10 @@ no_soft_reset:
 	[ p0 ++ ] = r1;
 	
 	p0.h = hi(SIC_IWR);
-        p0.l = lo(SIC_IWR);
-        r0.l = 0x1;
-        w[p0] = r0.l;
-        SSYNC;
+	p0.l = lo(SIC_IWR);
+	r0.l = 0x1;
+	w[p0] = r0.l;
+	SSYNC;
 
 	sp.l = (0xffb01000 & 0xFFFF);
 	sp.h = (0xffb01000 >> 16);
diff --git a/cpu/bf533/video.c b/cpu/bf533/video.c
index 056564a..3ff0151 100644
--- a/cpu/bf533/video.c
+++ b/cpu/bf533/video.c
@@ -45,7 +45,7 @@ int is_vblank_line(const int line)
 {
 	/*
 	 *  This array contains a single bit for each line in
-	 *  an NTSC frame. 
+	 *  an NTSC frame.
 	 */
 	if ((line <= 18) || (line >= 264 && line <= 281) || (line == 528))
 		return true;