MN10300: And Panasonic AM34 subarch and implement SMP

Implement the Panasonic MN10300 AM34 CPU subarch and implement SMP support for
MN10300.  Also implement support for the MN2WS0060 processor and the ASB2364
evaluation board which are AM34 based.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 86 insertions, 33 deletions

diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index a0a16e6e4a4e..81e27816aaf8 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -48,7 +48,7 @@ config GENERIC_CALIBRATE_DELAY
         def_bool y
 
 config GENERIC_CMOS_UPDATE
-        def_bool y
+        def_bool n
 
 config GENERIC_FIND_NEXT_BIT
         def_bool y
@@ -72,10 +72,6 @@ config GENERIC_HARDIRQS
 config HOTPLUG_CPU
         def_bool n
 
-config HZ
-        int
-        default 1000
-
 mainmenu "Matsushita MN10300/AM33 Kernel Configuration"
 
 source "init/Kconfig"
@@ -98,6 +94,9 @@ config MN10300_UNIT_ASB2303
 config MN10300_UNIT_ASB2305
         bool "ASB2305"
 
+config MN10300_UNIT_ASB2364
+        bool "ASB2364"
+
 endchoice
 
 choice
@@ -115,17 +114,13 @@ config MN10300_PROC_MN103E010
         select MN10300_PROC_HAS_TTYSM1
         select MN10300_PROC_HAS_TTYSM2
 
-endchoice
-
-choice
-        prompt "Processor core support"
-        default MN10300_CPU_AM33V2
-        help
-          This option specifies the processor core for which the kernel will be
-          compiled. It affects the instruction set used.
-
-config MN10300_CPU_AM33V2
-        bool "AM33v2"
+config MN10300_PROC_MN2WS0050
+        bool "MN2WS0050"
+        depends on MN10300_UNIT_ASB2364
+        select AM34_2
+        select MN10300_PROC_HAS_TTYSM0
+        select MN10300_PROC_HAS_TTYSM1
+        select MN10300_PROC_HAS_TTYSM2
 
 endchoice
 
@@ -138,7 +133,7 @@ config MN10300_HAS_ATOMIC_OPS_UNIT
 config FPU
         bool "FPU present"
         default y
-        depends on MN10300_PROC_MN103E010
+        depends on MN10300_PROC_MN103E010 || MN10300_PROC_MN2WS0050
 
 config LAZY_SAVE_FPU
         bool "Save FPU state lazily"
@@ -179,24 +174,55 @@ config KERNEL_TEXT_ADDRESS
 
 config KERNEL_ZIMAGE_BASE_ADDRESS
         hex "Base address of compressed vmlinux image"
-        default "0x90700000"
+        default "0x50700000"
+
+config BOOT_STACK_OFFSET
+        hex
+        default "0xF00" if SMP
+        default "0xFF0" if !SMP
 
+config BOOT_STACK_SIZE
+        hex
+        depends on SMP
+        default "0x100"
 endmenu
 
-config PREEMPT
-        bool "Preemptible Kernel"
-        help
-          This option reduces the latency of the kernel when reacting to
-          real-time or interactive events by allowing a low priority process to
-          be preempted even if it is in kernel mode executing a system call.
-          This allows applications to run more reliably even when the system is
-          under load.
+config SMP
+        bool "Symmetric multi-processing support"
+        default y
+        depends on MN10300_PROC_MN2WS0038 || MN10300_PROC_MN2WS0050
+        ---help---
+          This enables support for systems with more than one CPU. If you have
+          a system with only one CPU, like most personal computers, say N. If
+          you have a system with more than one CPU, say Y.
+
+          If you say N here, the kernel will run on single and multiprocessor
+          machines, but will use only one CPU of a multiprocessor machine. If
+          you say Y here, the kernel will run on many, but not all,
+          singleprocessor machines. On a singleprocessor machine, the kernel
+          will run faster if you say N here.
+
+          See also <file:Documentation/i386/IO-APIC.txt>,
+          <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
+          <http://www.tldp.org/docs.html#howto>.
 
-          Say Y here if you are building a kernel for a desktop, embedded
-          or real-time system.  Say N if you are unsure.
+          If you don't know what to do here, say N.
+
+config NR_CPUS
+        int
+        depends on SMP
+        default "2"
+
+config USE_GENERIC_SMP_HELPERS
+        bool
+        depends on SMP
+        default y
+
+source "kernel/Kconfig.preempt"
 
 config MN10300_CURRENT_IN_E2
         bool "Hold current task address in E2 register"
+        depends on !SMP
         default y
         help
           This option removes the E2/R2 register from the set available to gcc
@@ -218,12 +244,14 @@ config MN10300_USING_JTAG
           suppresses the use of certain hardware debugging features, such as
           single-stepping, which are taken over completely by the JTAG unit.
 
+source "kernel/Kconfig.hz"
+
 config MN10300_RTC
         bool "Using MN10300 RTC"
-        depends on MN10300_PROC_MN103E010
+        depends on MN10300_PROC_MN103E010 || MN10300_PROC_MN2WS0050
+        select GENERIC_CMOS_UPDATE
         default n
         help
-
           This option enables support for the RTC, thus enabling time to be
           tracked, even when system is powered down. This is available on-chip
           on the MN103E010.
@@ -315,14 +343,23 @@ config MN10300_TTYSM1
 
 choice
         prompt "Select the timer to supply the clock for SIF1"
-        default MN10300_TTYSM0_TIMER9
+        default MN10300_TTYSM1_TIMER12 \
+                if !(AM33_2 || AM33_3)
+        default MN10300_TTYSM1_TIMER9 \
+                if AM33_2 || AM33_3
         depends on MN10300_TTYSM1
 
+config MN10300_TTYSM1_TIMER12
+        bool "Use timer 12 (16-bit)"
+        depends on !(AM33_2 || AM33_3)
+
 config MN10300_TTYSM1_TIMER9
         bool "Use timer 9 (16-bit)"
+        depends on AM33_2 || AM33_3
 
 config MN10300_TTYSM1_TIMER3
         bool "Use timer 3 (8-bit)"
+        depends on AM33_2 || AM33_3
 
 endchoice
 
@@ -337,17 +374,33 @@ config MN10300_TTYSM2
 
 choice
         prompt "Select the timer to supply the clock for SIF2"
-        default MN10300_TTYSM0_TIMER10
+        default MN10300_TTYSM2_TIMER3 \
+                if !(AM33_2 || AM33_3)
+        default MN10300_TTYSM2_TIMER10 \
+                if AM33_2 || AM33_3
         depends on MN10300_TTYSM2
 
+config MN10300_TTYSM2_TIMER9
+        bool "Use timer 9 (16-bit)"
+        depends on !(AM33_2 || AM33_3)
+
+config MN10300_TTYSM2_TIMER1
+        bool "Use timer 1 (8-bit)"
+        depends on !(AM33_2 || AM33_3)
+
+config MN10300_TTYSM2_TIMER3
+        bool "Use timer 3 (8-bit)"
+        depends on !(AM33_2 || AM33_3)
+
 config MN10300_TTYSM2_TIMER10
         bool "Use timer 10 (16-bit)"
+        depends on AM33_2 || AM33_3
 
 endchoice
 
 config MN10300_TTYSM2_CTS
         bool "Enable the use of the CTS line /dev/ttySM2"
-        depends on MN10300_TTYSM2
+        depends on MN10300_TTYSM2 && AM33_2
 
 endmenu