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MN10300: And Panasonic AM34 subarch and implement SMP

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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>
This commit is contained in:
Akira Takeuchi
2010-10-27 17:28:55 +01:00
committed by David Howells
parent 04157a6e7d
commit 368dd5acd1
80 changed files with 4500 additions and 487 deletions
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36
arch/mn10300/include/asm/frame.inc
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@@ -18,6 +18,9 @@
#ifndef __ASM_OFFSETS_H__
#include <asm/asm-offsets.h>
#endif
#ifdef CONFIG_SMP
#include <proc/smp-regs.h>
#endif
#define pi break
@@ -37,9 +40,25 @@
movm [d2,d3,a2,a3,exreg0,exreg1,exother],(sp)
mov sp,fp # FRAME pointer in A3
add -12,sp # allow for calls to be made
#ifdef CONFIG_SMP
#ifdef CONFIG_PREEMPT /* FIXME */
mov epsw,d2
and ~EPSW_IE,epsw
#endif
mov (CPUID),a0
add a0,a0
add a0,a0
mov (___frame,a0),a1
mov a1,(REG_NEXT,fp)
mov fp,(___frame,a0)
#ifdef CONFIG_PREEMPT /* FIXME */
mov d2,epsw
#endif
#else /* CONFIG_SMP */
mov (__frame),a1
mov a1,(REG_NEXT,fp)
mov fp,(__frame)
#endif /* CONFIG_SMP */
and ~EPSW_FE,epsw # disable the FPU inside the kernel
@@ -57,10 +76,27 @@
.macro RESTORE_ALL
# peel back the stack to the calling frame
# - this permits execve() to discard extra frames due to kernel syscalls
#ifdef CONFIG_SMP
#ifdef CONFIG_PREEMPT /* FIXME */
mov epsw,d2
and ~EPSW_IE,epsw
#endif
mov (CPUID),a0
add a0,a0
add a0,a0
mov (___frame,a0),fp
mov fp,sp
mov (REG_NEXT,fp),d0 # userspace has regs->next == 0
mov d0,(___frame,a0)
#ifdef CONFIG_PREEMPT /* FIXME */
mov d2,epsw
#endif
#else /* CONFIG_SMP */
mov (__frame),fp
mov fp,sp
mov (REG_NEXT,fp),d0 # userspace has regs->next == 0
mov d0,(__frame)
#endif /* CONFIG_SMP */
#ifndef CONFIG_MN10300_USING_JTAG
mov (REG_EPSW,fp),d0