[PATCH] m68knommu: use configurable RAM setup in linker script

Remove the fixed RAM configurations for each board type from the
linker script. Replace with simple defines usng the flexible RAM
configuration options. This cleans out of lot of board specific
munging of addresses.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/m68knommu/kernel/vmlinux.lds.S

 /*
  *	vmlinux.lds.S -- master linker script for m68knommu arch
  *
- *	(C) Copyright 2002-2004, Greg Ungerer <gerg@snapgear.com>
+ *	(C) Copyright 2002-2006, Greg Ungerer <gerg@snapgear.com>
  *
  *	This ends up looking compilcated, because of the number of
  *	address variations for ram and rom/flash layouts. The real
@@ -22,13 +22,7 @@
 #define	ROM_START	0x10c10400
 #define	ROM_LENGTH	0xfec00
 #define	ROM_END		0x10d00000
-#define	RAMVEC_START	0x00000000
-#define	RAMVEC_LENGTH	0x400
-#define	RAM_START	0x10000400
-#define	RAM_LENGTH	0xffc00
-#define	RAM_END		0x10100000
-#define _ramend	_ram_end_notused
-#define	DATA_ADDR	RAM_START
+#define	DATA_ADDR	CONFIG_KERNELBASE
 #endif
 
 /*
@@ -41,11 +35,6 @@
 #define	ROM_START	0x10c10400
 #define	ROM_LENGTH	0x1efc00
 #define	ROM_END		0x10e00000
-#define	RAMVEC_START	0x00000000
-#define	RAMVEC_LENGTH	0x400
-#define	RAM_START	0x00020400
-#define	RAM_LENGTH	0x7dfc00
-#define	RAM_END		0x00800000
 #endif
 #ifdef CONFIG_ROMKERNEL
 #define	ROMVEC_START	0x10c10000
@@ -53,11 +42,6 @@
 #define	ROM_START	0x10c10400
 #define	ROM_LENGTH	0x1efc00
 #define	ROM_END		0x10e00000
-#define	RAMVEC_START	0x00000000
-#define	RAMVEC_LENGTH	0x400
-#define	RAM_START	0x00020000
-#define	RAM_LENGTH	0x600000
-#define	RAM_END		0x00800000
 #endif
 #ifdef CONFIG_HIMEMKERNEL
 #define	ROMVEC_START	0x00600000
@@ -65,141 +49,28 @@
 #define	ROM_START	0x00600400
 #define	ROM_LENGTH	0x1efc00
 #define	ROM_END		0x007f0000
-#define	RAMVEC_START	0x00000000
-#define	RAMVEC_LENGTH	0x400
-#define	RAM_START	0x00020000
-#define	RAM_LENGTH	0x5e0000
-#define	RAM_END		0x00600000
 #endif
 #endif
 
-#ifdef CONFIG_DRAGEN2
-#define	RAM_START	0x10000
-#define	RAM_LENGTH	0x7f0000
-#endif
-
 #ifdef CONFIG_UCQUICC
 #define	ROMVEC_START	0x00000000
 #define	ROMVEC_LENGTH	0x404
 #define	ROM_START	0x00000404
 #define	ROM_LENGTH	0x1ff6fc
 #define	ROM_END		0x00200000
-#define	RAMVEC_START	0x00200000
-#define	RAMVEC_LENGTH	0x404
-#define	RAM_START	0x00200404
-#define	RAM_LENGTH	0x1ff6fc
-#define	RAM_END		0x00400000
-#endif
-
-/*
- *	The standard Arnewsh 5206 board only has 1MiB of ram. Not normally
- *	enough to be useful. Assume the user has fitted something larger,
- *	at least 4MiB in size. No point in not letting the kernel completely
- *	link, it will be obvious if it is too big when they go to load it.
- */
-#if defined(CONFIG_ARN5206)
-#define	RAM_START	0x10000
-#define	RAM_LENGTH	0x3f0000
-#endif
-
-/*
- *	The Motorola 5206eLITE board only has 1MiB of static RAM.
- */
-#if defined(CONFIG_ELITE)
-#define	RAM_START	0x30020000
-#define	RAM_LENGTH	0xe0000
-#endif
-
-/*
- *	All the Motorola eval boards have the same basic arrangement.
- *	The end of RAM will vary depending on how much ram is fitted,
- *	but this isn't important here, we assume at least 4MiB.
- */
-#if defined(CONFIG_M5206eC3) || defined(CONFIG_M5249C3) || \
-    defined(CONFIG_M5272C3) || defined(CONFIG_M5307C3) || \
-    defined(CONFIG_ARN5307) || defined(CONFIG_M5407C3) || \
-    defined(CONFIG_M5271EVB) || defined(CONFIG_M5275EVB) || \
-    defined(CONFIG_M5235EVB)
-#define	RAM_START	0x20000
-#define	RAM_LENGTH	0x3e0000
-#endif
-
-/*
- *	The Freescale 5208EVB board has 32MB of RAM.
- */
-#if defined(CONFIG_M5208EVB)
-#define	RAM_START	0x40020000
-#define	RAM_LENGTH	0x01fe0000
-#endif
-
-/*
- *	The senTec COBRA5272 board has nearly the same memory layout as 
- *	the M5272C3. We assume 16MiB ram.
- */
-#if defined(CONFIG_COBRA5272)
-#define RAM_START   0x20000
-#define RAM_LENGTH  0xfe0000
-#endif
-
-#if defined(CONFIG_M5282EVB)
-#define	RAM_START	0x10000
-#define	RAM_LENGTH	0x3f0000
-#endif
-
-/*
- *	The senTec COBRA5282 board has the same memory layout as the M5282EVB.
- */
-#if defined(CONFIG_COBRA5282)
-#define  RAM_START   0x10000
-#define  RAM_LENGTH  0x3f0000
-#endif
-
-
-/*
- *	The EMAC SoM-5282EM module.
- */
-#if defined(CONFIG_SOM5282EM)
-#define  RAM_START   0x10000
-#define  RAM_LENGTH  0xff0000
-#endif
-
-
-/*
- *	These flash boot boards use all of ram for operation. Again the
- *	actual memory size is not important here, assume at least 4MiB.
- *	They currently have no support for running in flash.
- */
-#if defined(CONFIG_NETtel) || defined(CONFIG_eLIA) || \
-    defined(CONFIG_DISKtel) || defined(CONFIG_SECUREEDGEMP3) || \
-    defined(CONFIG_HW_FEITH)
-#define	RAM_START	0x400
-#define	RAM_LENGTH	0x3ffc00
-#endif
-
-/*
- *	Sneha Boards mimimun memory
- *	The end of RAM will vary depending on how much ram is fitted,
- *	but this isn't important here, we assume at least 4MiB.
- */
-#if defined(CONFIG_CPU16B)   
-#define	RAM_START	0x20000
-#define	RAM_LENGTH	0x3e0000
-#endif
-
-#if defined(CONFIG_MOD5272)
-#define RAM_START	0x02000000
-#define RAM_LENGTH	0x00800000
-#define RAMVEC_START	0x20000000
-#define RAMVEC_LENGTH	0x00000400
 #endif
 
 #if defined(CONFIG_RAMKERNEL)
+#define	RAM_START	CONFIG_KERNELBASE
+#define	RAM_LENGTH	(CONFIG_RAMBASE + CONFIG_RAMSIZE - CONFIG_KERNELBASE)
 #define	TEXT		ram
 #define	DATA		ram
 #define	INIT		ram
 #define	BSS		ram
 #endif
 #if defined(CONFIG_ROMKERNEL) || defined(CONFIG_HIMEMKERNEL)
+#define	RAM_START	CONFIG_RAMBASE
+#define	RAM_LENGTH	CONFIG_RAMSIZE
 #define	TEXT		rom
 #define	DATA		ram
 #define	INIT		ram
@@ -215,13 +86,7 @@ OUTPUT_ARCH(m68k)
 ENTRY(_start)
 
 MEMORY {
-#ifdef RAMVEC_START
-	ramvec	: ORIGIN = RAMVEC_START, LENGTH = RAMVEC_LENGTH
-#endif
 	ram	: ORIGIN = RAM_START, LENGTH = RAM_LENGTH
-#ifdef RAM_END
-	eram	: ORIGIN = RAM_END, LENGTH = 0
-#endif
 #ifdef ROM_START
 	romvec	: ORIGIN = ROMVEC_START, LENGTH = ROMVEC_LENGTH
 	rom	: ORIGIN = ROM_START, LENGTH = ROM_LENGTH
@@ -308,12 +173,6 @@ SECTIONS {
 		__rom_end = . ;
 	} > erom
 #endif
-#ifdef RAMVEC_START
-	. = RAMVEC_START ;
-	.ramvec : {
-		__ramvec = .;
-	} > ramvec
-#endif
 
 	.data DATA_ADDR : {
 		. = ALIGN(4);
@@ -373,12 +232,5 @@ SECTIONS {
 		_ebss = . ;
 	} > BSS
 
-#ifdef RAM_END
-	. = RAM_END ;
-	.eram : {
-		__ramend = . ;
-		_ramend = . ;
-	} > eram
-#endif
 }