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>
diff --git a/arch/mn10300/kernel/gdb-io-serial.c b/arch/mn10300/kernel/gdb-io-serial.c
index ae663dc..0d5d63c 100644
--- a/arch/mn10300/kernel/gdb-io-serial.c
+++ b/arch/mn10300/kernel/gdb-io-serial.c
@@ -23,6 +23,7 @@
#include <asm/exceptions.h>
#include <asm/serial-regs.h>
#include <unit/serial.h>
+#include <asm/smp.h>
/*
* initialise the GDB stub
@@ -45,22 +46,34 @@
XIRQxICR(GDBPORT_SERIAL_IRQ) = 0;
tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
+#if CONFIG_GDBSTUB_IRQ_LEVEL == 0
IVAR0 = EXCEP_IRQ_LEVEL0;
- set_intr_stub(EXCEP_IRQ_LEVEL0, gdbstub_io_rx_handler);
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 1
+ IVAR1 = EXCEP_IRQ_LEVEL1;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 2
+ IVAR2 = EXCEP_IRQ_LEVEL2;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 3
+ IVAR3 = EXCEP_IRQ_LEVEL3;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 4
+ IVAR4 = EXCEP_IRQ_LEVEL4;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 5
+ IVAR5 = EXCEP_IRQ_LEVEL5;
+#else
+#error "Unknown irq level for gdbstub."
+#endif
+
+ set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL),
+ gdbstub_io_rx_handler);
XIRQxICR(GDBPORT_SERIAL_IRQ) &= ~GxICR_REQUEST;
- XIRQxICR(GDBPORT_SERIAL_IRQ) = GxICR_ENABLE | GxICR_LEVEL_0;
+ XIRQxICR(GDBPORT_SERIAL_IRQ) =
+ GxICR_ENABLE | NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL);
tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
GDBPORT_SERIAL_IER = UART_IER_RDI | UART_IER_RLSI;
/* permit level 0 IRQs to take place */
- 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));
}
/*
@@ -87,6 +100,9 @@
{
unsigned ix;
u8 ch, st;
+#if defined(CONFIG_MN10300_WD_TIMER)
+ int cpu;
+#endif
*_ch = 0xff;
@@ -104,8 +120,9 @@
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;
}