diff --git a/cpu/arm920t/serial.c b/cpu/arm920t/serial.c
index 6104e75..1749e82 100644
--- a/cpu/arm920t/serial.c
+++ b/cpu/arm920t/serial.c
@@ -1,18 +1,18 @@
-/*
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
+	/*
+	 * (C) Copyright 2002
+	 * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+	 *
+	 * 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.
+	 *
+	 * This program is distributed in the hope that it will be useful,
+	 * but WITHOUT ANY WARRANTY; without even the implied warranty of
+	 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	 * GNU General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
@@ -28,13 +28,13 @@
 #ifdef CONFIG_SERIAL1
 #define UART_NR	S3C24X0_UART0
 
-#elif CONFIG_SERIAL2
+#elif defined(CONFIG_SERIAL2)
 # if defined(CONFIG_TRAB)
 #  error "TRAB supports only CONFIG_SERIAL1"
 # endif
 #define UART_NR	S3C24X0_UART1
 
-#elif CONFIG_SERIAL3
+#elif defined(CONFIG_SERIAL3)
 # if defined(CONFIG_TRAB)
 #  #error "TRAB supports only CONFIG_SERIAL1"
 # endif
diff --git a/cpu/arm926ejs/interrupts.c b/cpu/arm926ejs/interrupts.c
index 10841fd..3770660 100644
--- a/cpu/arm926ejs/interrupts.c
+++ b/cpu/arm926ejs/interrupts.c
@@ -293,7 +293,7 @@
 /* waits specified delay value and resets timestamp */
 void udelay_masked (unsigned long usec)
 {
-	ulong tmo, tmp;
+	ulong tmo;
 
 	if(usec >= 1000){               /* if "big" number, spread normalization to seconds */
 		tmo = usec / 1000;      /* start to normalize for usec to ticks per sec */
diff --git a/cpu/i386/serial.c b/cpu/i386/serial.c
index f58b47c..db13008 100644
--- a/cpu/i386/serial.c
+++ b/cpu/i386/serial.c
@@ -51,7 +51,7 @@
 #include <asm/io.h>
 #include <asm/ibmpc.h>
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 #include <malloc.h>
 #endif
 
@@ -81,7 +81,7 @@
 #define asyncLSRRxFifoError1          0x80
 
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 /*-----------------------------------------------------------------------------+
   | Fifo
   +-----------------------------------------------------------------------------*/
@@ -193,7 +193,7 @@
 {
 	unsigned char status = 0;
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 	if (serial_buffer_active) {
 		return serial_buffered_getc();
 	}
@@ -225,7 +225,7 @@
 {
 	unsigned char status;
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 	if (serial_buffer_active) {
 		return serial_buffered_tstc();
 	}
@@ -248,7 +248,7 @@
 }
 
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 
 void serial_isr(void *arg)
 {
diff --git a/cpu/mpc5xxx/ide.c b/cpu/mpc5xxx/ide.c
index 4718869..1969172 100644
--- a/cpu/mpc5xxx/ide.c
+++ b/cpu/mpc5xxx/ide.c
@@ -73,7 +73,7 @@
 	*(vu_long *) MPC5XXX_ATA_PIO2 = reg;
 
 #ifdef CONFIG_IDE_RESET
-        init_ide_reset ();
+	init_ide_reset ();
 #endif /* CONFIG_IDE_RESET */
 
 	return (0);
diff --git a/cpu/ppc4xx/405gp_pci.c b/cpu/ppc4xx/405gp_pci.c
index c9e2e9c..ff9215f 100644
--- a/cpu/ppc4xx/405gp_pci.c
+++ b/cpu/ppc4xx/405gp_pci.c
@@ -364,7 +364,7 @@
  */
 static struct pci_config_table pci_405gp_config_table[] = {
 /*if VendID is 0 it terminates the table search (ie Walnut)*/
-#if CFG_PCI_SUBSYS_VENDORID
+#ifdef CFG_PCI_SUBSYS_VENDORID
 	{CFG_PCI_SUBSYS_VENDORID, PCI_ANY_ID, PCI_CLASS_BRIDGE_HOST,
 	 PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_bridge},
 #endif
diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
index df19605..cdb5039 100644
--- a/cpu/ppc4xx/cpu.c
+++ b/cpu/ppc4xx/cpu.c
@@ -70,17 +70,17 @@
 
 	get_sys_info(&sys_info);
 
-#if CONFIG_405GP
+#ifdef CONFIG_405GP
 	puts ("IBM PowerPC 405GP");
 	if (pvr == PVR_405GPR_RB) {
 		putc('r');
 	}
 	puts (" Rev. ");
 #endif
-#if CONFIG_405CR
+#ifdef CONFIG_405CR
 	puts ("IBM PowerPC 405CR Rev. ");
 #endif
-#if CONFIG_405EP
+#ifdef CONFIG_405EP
 	puts ("IBM PowerPC 405EP Rev. ");
 #endif
 	switch (pvr) {
@@ -89,7 +89,7 @@
 		putc('B');
 		break;
 	case PVR_405GP_RC:
-#if CONFIG_405CR
+#ifdef CONFIG_405CR
 	case PVR_405CR_RC:
 #endif
 		putc('C');
@@ -97,7 +97,7 @@
 	case PVR_405GP_RD:
 		putc('D');
 		break;
-#if CONFIG_405GP
+#ifdef CONFIG_405GP
 	case PVR_405GP_RE:
 		putc('E');
 		break;
diff --git a/cpu/ppc4xx/serial.c b/cpu/ppc4xx/serial.c
index 2c77338..41402cc 100644
--- a/cpu/ppc4xx/serial.c
+++ b/cpu/ppc4xx/serial.c
@@ -48,7 +48,7 @@
 #include <watchdog.h>
 #include "vecnum.h"
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 #include <malloc.h>
 #endif
 
@@ -351,7 +351,7 @@
 /*#define asyncRxBufferport1      ACTING_UART0_BASE+0x00 */
 
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 /*-----------------------------------------------------------------------------+
   | Fifo
   +-----------------------------------------------------------------------------*/
@@ -637,7 +637,7 @@
 }
 
 
-#if CONFIG_SERIAL_SOFTWARE_FIFO
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 
 void serial_isr (void *arg)
 {
diff --git a/cpu/ppc4xx/speed.c b/cpu/ppc4xx/speed.c
index 7172fe3..f8f88ff45 100644
--- a/cpu/ppc4xx/speed.c
+++ b/cpu/ppc4xx/speed.c
@@ -247,7 +247,7 @@
 	unsigned long temp1;
 	unsigned long lfdiv;
 	unsigned long m;
-	unsigned long prbdv0;    
+	unsigned long prbdv0;
 
 	/* Extract configured divisors */
 	mfsdr( sdr_sdstp0,strp0 );
diff --git a/cpu/s3c44b0/start.S b/cpu/s3c44b0/start.S
index ce31ec9..b4b7c3f 100644
--- a/cpu/s3c44b0/start.S
+++ b/cpu/s3c44b0/start.S
@@ -71,16 +71,15 @@
 	.word _start
 
 /*
- * Note: _armboot_end_data and _armboot_end are defined
- * by the (board-dependent) linker script.
- * _armboot_end_data is the first usable FLASH address after armboot
+ * These are defined in the board-specific linker script.
  */
-.globl _armboot_end_data
-_armboot_end_data:
-	.word armboot_end_data
-.globl _armboot_end
-_armboot_end:
-	.word armboot_end
+.globl _bss_start
+_bss_start:
+	.word __bss_start
+
+.globl _bss_end
+_bss_end:
+	.word _end
 
 #ifdef CONFIG_USE_IRQ
 /* IRQ stack memory (calculated at run-time) */
@@ -130,7 +129,7 @@
 	beq     stack_setup
 
 	ldr	r2, _armboot_start
-	ldr	r3, _armboot_end
+	ldr	r3, _bss_start
 	sub	r2, r3, r2		/* r2 <- size of armboot            */
 	add	r2, r0, r2		/* r2 <- source end address         */
 
diff --git a/cpu/sa1100/serial.c b/cpu/sa1100/serial.c
index d3b8628..a598489 100644
--- a/cpu/sa1100/serial.c
+++ b/cpu/sa1100/serial.c
@@ -66,7 +66,7 @@
 	Ser1UTCR1 = 0;
 	Ser1UTCR2 = (u32)reg;
 	Ser1UTCR3 = ( UTCR3_RXE | UTCR3_TXE );
-#elif CONFIG_SERIAL3
+#elif defined(CONFIG_SERIAL3)
 	/* Wait until port is ready ... */
 	while (Ser3UTSR1 & UTSR1_TBY) {
 	}
@@ -107,7 +107,7 @@
 	while ((Ser1UTSR0 & UTSR0_TFS) == 0);
 
 	Ser1UTDR = c;
-#elif CONFIG_SERIAL3
+#elif defined(CONFIG_SERIAL3)
 	/* wait for room in the tx FIFO on SERIAL3 */
 	while ((Ser3UTSR0 & UTSR0_TFS) == 0);
 
@@ -128,7 +128,7 @@
 {
 #ifdef CONFIG_SERIAL1
 	return Ser1UTSR1 & UTSR1_RNE;
-#elif CONFIG_SERIAL3
+#elif defined(CONFIG_SERIAL3)
 	return Ser3UTSR1 & UTSR1_RNE;
 #endif
 }
@@ -144,7 +144,7 @@
 	while (!(Ser1UTSR1 & UTSR1_RNE));
 
 	return (char) Ser1UTDR & 0xff;
-#elif CONFIG_SERIAL3
+#elif defined(CONFIG_SERIAL3)
 	while (!(Ser3UTSR1 & UTSR1_RNE));
 
 	return (char) Ser3UTDR & 0xff;