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authorGeert Uytterhoeven <geert@linux-m68k.org>2011-12-26 20:32:02 +0100
committerGreg Ungerer <gerg@uclinux.org>2011-12-30 10:20:49 +1000
commitad8f955daf77d303f0ee08d2acab30d3886cbd2b (patch)
tree325095c2c9411c3ca753be57e83ef31d4979d57b /arch/m68k/Kconfig.cpu
parentfbe3364ac4fa82caa585f98e4a525946d2cc21f4 (diff)
downloadlinux-ad8f955daf77d303f0ee08d2acab30d3886cbd2b.tar.bz2
m68k/Kconfig: Separate classic m68k and coldfire early
While you can build multiplatform kernels for machines with classic m68k processors, you cannot mix support for classic m68k and coldfire processors. To avoid such hybrid kernels, introduce CONFIG_M68KCLASSIC as an antipole for CONFIG_COLDFIRE, and make all specific processor support depend on one of them. All classic m68k machine support also needs to depend on this. The defaults (CONFIG_M68KCLASSIC if MMU, CONFIG_COLDFIRE if !MMU) are chosen such to make most of the existing configs build and work. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68k/Kconfig.cpu')
-rw-r--r--arch/m68k/Kconfig.cpu66
1 files changed, 38 insertions, 28 deletions
diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index 5ae1d63ef5e9..f10a5d0f0774 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -1,5 +1,37 @@
comment "Processor Type"
+choice
+ prompt "CPU family support"
+ default M68KCLASSIC if MMU
+ default COLDFIRE if !MMU
+ help
+ The Freescale (was Motorola) M68K family of processors implements
+ the full 68000 processor instruction set.
+ The Freescale ColdFire family of processors is a modern derivitive
+ of the 68000 processor family. They are mainly targeted at embedded
+ applications, and are all System-On-Chip (SOC) devices, as opposed
+ to stand alone CPUs. They implement a subset of the original 68000
+ processor instruction set.
+ If you anticipate running this kernel on a computer with a classic
+ MC68xxx processor, select M68KCLASSIC.
+ If you anticipate running this kernel on a computer with a ColdFire
+ processor, select COLDFIRE.
+
+config M68KCLASSIC
+ bool "Classic M68K CPU family support"
+
+config COLDFIRE
+ bool "Coldfire CPU family support"
+ select GENERIC_GPIO
+ select ARCH_REQUIRE_GPIOLIB
+ select CPU_HAS_NO_BITFIELDS
+ select CPU_HAS_NO_MULDIV64
+ select GENERIC_CSUM
+
+endchoice
+
+if M68KCLASSIC
+
config M68000
bool
select CPU_HAS_NO_BITFIELDS
@@ -20,20 +52,6 @@ config MCPU32
based on the 68020 processor. For the most part it is used in
System-On-Chip parts, and does not contain a paging MMU.
-config COLDFIRE
- bool
- select GENERIC_GPIO
- select ARCH_REQUIRE_GPIOLIB
- select CPU_HAS_NO_BITFIELDS
- select CPU_HAS_NO_MULDIV64
- select GENERIC_CSUM
- help
- The Freescale ColdFire family of processors is a modern derivitive
- of the 68000 processor family. They are mainly targeted at embedded
- applications, and are all System-On-Chip (SOC) devices, as opposed
- to stand alone CPUs. They implement a subset of the original 68000
- processor instruction set.
-
config M68020
bool "68020 support"
depends on MMU
@@ -103,10 +121,13 @@ config M68360
help
Motorola 68360 processor support.
+endif # M68KCLASSIC
+
+if COLDFIRE
+
config M5206
bool "MCF5206"
depends on !MMU
- select COLDFIRE
select COLDFIRE_SW_A7
select HAVE_MBAR
help
@@ -115,7 +136,6 @@ config M5206
config M5206e
bool "MCF5206e"
depends on !MMU
- select COLDFIRE
select COLDFIRE_SW_A7
select HAVE_MBAR
help
@@ -124,7 +144,6 @@ config M5206e
config M520x
bool "MCF520x"
depends on !MMU
- select COLDFIRE
select GENERIC_CLOCKEVENTS
select HAVE_CACHE_SPLIT
help
@@ -133,7 +152,6 @@ config M520x
config M523x
bool "MCF523x"
depends on !MMU
- select COLDFIRE
select GENERIC_CLOCKEVENTS
select HAVE_CACHE_SPLIT
select HAVE_IPSBAR
@@ -143,7 +161,6 @@ config M523x
config M5249
bool "MCF5249"
depends on !MMU
- select COLDFIRE
select COLDFIRE_SW_A7
select HAVE_MBAR
help
@@ -155,7 +172,6 @@ config M527x
config M5271
bool "MCF5271"
depends on !MMU
- select COLDFIRE
select M527x
select HAVE_CACHE_SPLIT
select HAVE_IPSBAR
@@ -166,7 +182,6 @@ config M5271
config M5272
bool "MCF5272"
depends on !MMU
- select COLDFIRE
select COLDFIRE_SW_A7
select HAVE_MBAR
help
@@ -175,7 +190,6 @@ config M5272
config M5275
bool "MCF5275"
depends on !MMU
- select COLDFIRE
select M527x
select HAVE_CACHE_SPLIT
select HAVE_IPSBAR
@@ -186,7 +200,6 @@ config M5275
config M528x
bool "MCF528x"
depends on !MMU
- select COLDFIRE
select GENERIC_CLOCKEVENTS
select HAVE_CACHE_SPLIT
select HAVE_IPSBAR
@@ -196,7 +209,6 @@ config M528x
config M5307
bool "MCF5307"
depends on !MMU
- select COLDFIRE
select COLDFIRE_SW_A7
select HAVE_CACHE_CB
select HAVE_MBAR
@@ -206,7 +218,6 @@ config M5307
config M532x
bool "MCF532x"
depends on !MMU
- select COLDFIRE
select HAVE_CACHE_CB
help
Freescale (Motorola) ColdFire 532x processor support.
@@ -214,7 +225,6 @@ config M532x
config M5407
bool "MCF5407"
depends on !MMU
- select COLDFIRE
select COLDFIRE_SW_A7
select HAVE_CACHE_CB
select HAVE_MBAR
@@ -227,7 +237,6 @@ config M54xx
config M547x
bool "MCF547x"
depends on !MMU
- select COLDFIRE
select M54xx
select HAVE_CACHE_CB
select HAVE_MBAR
@@ -237,13 +246,14 @@ config M547x
config M548x
bool "MCF548x"
depends on !MMU
- select COLDFIRE
select M54xx
select HAVE_CACHE_CB
select HAVE_MBAR
help
Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.
+endif # COLDFIRE
+
comment "Processor Specific Options"