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[PATCH] m68knommu: use configurable RAM setup in linker script
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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>
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Greg Ungerer authored and Linus Torvalds committed Jun 26, 2006
1 parent 63e413d commit 73e2fba
Showing 1 changed file with 6 additions and 154 deletions.
160 changes: 6 additions & 154 deletions arch/m68knommu/kernel/vmlinux.lds.S
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/*
* 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
Expand All @@ -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

/*
Expand All @@ -41,165 +35,42 @@
#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
#define ROMVEC_LENGTH 0x400
#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
#define ROMVEC_LENGTH 0x400
#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
Expand All @@ -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
Expand Down Expand Up @@ -308,12 +173,6 @@ SECTIONS {
__rom_end = . ;
} > erom
#endif
#ifdef RAMVEC_START
. = RAMVEC_START ;
.ramvec : {
__ramvec = .;
} > ramvec
#endif

.data DATA_ADDR : {
. = ALIGN(4);
Expand Down Expand Up @@ -373,12 +232,5 @@ SECTIONS {
_ebss = . ;
} > BSS

#ifdef RAM_END
. = RAM_END ;
.eram : {
__ramend = . ;
_ramend = . ;
} > eram
#endif
}

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