PPC32: In the bootwrapper/loader, rename setup_legacy to serial_fixups to

more accurately describe what it does.  Also for netbooting, pass along ip=on and
in general make sure we don't pass along bogus info in r5.

arch/ppc/boot/common/misc-simple.c

@@ -67,7 +67,7 @@ extern int CRT_tstc(void);
 extern unsigned long serial_init(int chan, void *ignored);
 extern void serial_close(unsigned long com_port);
 extern void gunzip(void *, int, unsigned char *, int *);
-extern void setup_legacy(void);
+extern void serial_fixups(void);
 
 struct bi_record *
 decompress_kernel(unsigned long load_addr, int num_words, unsigned long cksum)
@@ -76,7 +76,7 @@ decompress_kernel(unsigned long load_addr, int num_words, unsigned long cksum)
 	char *cp, ch;
 	struct bi_record *rec, *birecs;
 
-	setup_legacy();
+	serial_fixups();
 	com_port = serial_init(0, NULL);
 
 	/* assume the chunk below 8M is free */

arch/ppc/boot/common/relocate.S

@@ -9,7 +9,7 @@
  *	   trini@mvista.com
  * Derived from arch/ppc/boot/prep/head.S (Cort Dougan, many others).
  *
- * Copyright 2001 MontaVista Software Inc.
+ * Copyright 2001-2002 MontaVista Software 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
@@ -188,10 +188,11 @@ start_ldr:
 	bl	decompress_kernel
 
 	/*
-	 * Make sure the kernel knows we don't have things set  in
+	 * Make sure the kernel knows we don't have things set in
 	 * registers.  -- Tom
 	 */
 	li	r4,0
+	li	r5,0
 	li	r6,0
 
 	/*

arch/ppc/boot/prep/misc.c

@@ -75,7 +75,7 @@ extern void gunzip(void *, int, unsigned char *, int *);
 
 extern void _put_MSR(unsigned int val);
 extern unsigned long serial_init(int chan, void *ignored);
-extern void setup_legacy(void);
+extern void serial_fixups(void);
 
 void
 writel(unsigned int val, unsigned int address)
@@ -134,7 +134,7 @@ decompress_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
 	int start_multi = 0;
 	unsigned int pci_viddid, pci_did, tulip_pci_base, tulip_base;
 
-	setup_legacy();
+	serial_fixups();
 #if defined(CONFIG_SERIAL_CONSOLE)
 	com_port = serial_init(0, NULL);
 #endif /* CONFIG_SERIAL_CONSOLE */

arch/ppc/boot/simple/chrpmap.S

@@ -3,15 +3,15 @@
  *
  * Author: Tom Rini <trini@mvista.com>
  *
- * This will go and setup ISA_io to 0xFE00000.
+ * This will go and setup ISA_io to 0xFE00000 and return.
  */
 
 #include <asm/ppc_asm.h>
 
 	.text
 
-	.globl setup_legacy
-setup_legacy:
+	.globl serial_fixups
+serial_fixups:
 	lis	r3,ISA_io@h	/* Load ISA_io */
 	ori	r3,r3,ISA_io@l
 	lis	r4,0xFE00	/* Load the value, 0xFE00000 */

arch/ppc/boot/simple/direct.S

@@ -4,11 +4,12 @@
  * Author: Tom Rini <trini@mvista.com>
  *
  * This is an empty function for machines which use SERIAL_IO_MEM
- * and don't need ISA_io set to anything but 0;
+ * and don't need ISA_io set to anything but 0, or perform any other
+ * serial fixups.
  */
 
 	.text
 
-	.globl setup_legacy
-setup_legacy:
+	.globl serial_fixups
+serial_fixups:
 	blr

arch/ppc/boot/simple/legacy.S

@@ -3,15 +3,15 @@
  *
  * Author: Tom Rini <trini@mvista.com>
  *
- * This will go and setup ISA_io to 0x8000000.
+ * This will go and setup ISA_io to 0x8000000 and return.
  */
 
 #include <asm/ppc_asm.h>
 
 	.text
 
-	.globl setup_legacy
-setup_legacy:
+	.globl serial_fixups
+serial_fixups:
 	lis	r3,ISA_io@h	/* Load ISA_io */
 	ori	r3,r3,ISA_io@l
 	lis	r4,0x8000	/* Load the value, 0x8000000 */

arch/ppc/boot/simple/misc-embedded.c

@@ -54,7 +54,7 @@ char *bootrom_cmdline = "";
 char compiled_string[] = CONFIG_CMDLINE;
 #endif
 char ramroot_string[] = "root=/dev/ram";
-char netroot_string[] = "root=/dev/nfs rw ip=auto";
+char netroot_string[] = "root=/dev/nfs rw ip=on";
 
 /* Serial port to use. */
 unsigned long com_port;