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, 13 insertions, 11 deletions

diff --git a/arch/mn10300/kernel/gdb-io-ttysm.c b/arch/mn10300/kernel/gdb-io-ttysm.c
index a560bbc3137d..97dfda23342c 100644
--- a/arch/mn10300/kernel/gdb-io-ttysm.c
+++ b/arch/mn10300/kernel/gdb-io-ttysm.c
@@ -58,9 +58,12 @@ void __init gdbstub_io_init(void)
         gdbstub_io_set_baud(115200);
 
         /* we want to get serial receive interrupts */
-        set_intr_level(gdbstub_port->rx_irq, GxICR_LEVEL_0);
-        set_intr_level(gdbstub_port->tx_irq, GxICR_LEVEL_0);
-        set_intr_stub(EXCEP_IRQ_LEVEL0, gdbstub_io_rx_handler);
+        set_intr_level(gdbstub_port->rx_irq,
+                NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL));
+        set_intr_level(gdbstub_port->tx_irq,
+                NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL));
+        set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL),
+                gdbstub_io_rx_handler);
 
         *gdbstub_port->rx_icr |= GxICR_ENABLE;
         tmp = *gdbstub_port->rx_icr;
@@ -84,12 +87,7 @@ void __init gdbstub_io_init(void)
         tmp = *gdbstub_port->_control;
 
         /* permit level 0 IRQs only */
-        asm volatile(
-                "       and %0,epsw     \n"
-                "       or %1,epsw      \n"
-                :
-                : "i"(~EPSW_IM), "i"(EPSW_IE|EPSW_IM_1)
-                );
+        local_change_intr_mask_level(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1));
 }
 
 /*
@@ -184,6 +182,9 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
 {
         unsigned ix;
         u8 ch, st;
+#if defined(CONFIG_MN10300_WD_TIMER)
+        int cpu;
+#endif
 
         *_ch = 0xff;
 
@@ -201,8 +202,9 @@ try_again:
                 if (nonblock)
                         return -EAGAIN;
 #ifdef CONFIG_MN10300_WD_TIMER
-                watchdog_alert_counter = 0;
-#endif /* CONFIG_MN10300_WD_TIMER */
+        for (cpu = 0; cpu < NR_CPUS; cpu++)
+                watchdog_alert_counter[cpu] = 0;
+#endif
                 goto try_again;
         }