Blackfin arch: SMP supporting patchset: Blackfin kernel and memory management code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like
In this patch, we provide SMP extend to Blackfin kernel and memory management code
Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/arch/blackfin/kernel/reboot.c b/arch/blackfin/kernel/reboot.c
index ae97ca4..eeee8cb 100644
--- a/arch/blackfin/kernel/reboot.c
+++ b/arch/blackfin/kernel/reboot.c
@@ -21,7 +21,7 @@
* the core reset.
*/
__attribute__((l1_text))
-static void bfin_reset(void)
+static void _bfin_reset(void)
{
/* Wait for completion of "system" events such as cache line
* line fills so that we avoid infinite stalls later on as
@@ -66,6 +66,18 @@
}
}
+static void bfin_reset(void)
+{
+ if (ANOMALY_05000353 || ANOMALY_05000386)
+ _bfin_reset();
+ else
+ /* the bootrom checks to see how it was reset and will
+ * automatically perform a software reset for us when
+ * it starts executing boot
+ */
+ asm("raise 1;");
+}
+
__attribute__((weak))
void native_machine_restart(char *cmd)
{
@@ -75,14 +87,10 @@
{
native_machine_restart(cmd);
local_irq_disable();
- if (ANOMALY_05000353 || ANOMALY_05000386)
- bfin_reset();
+ if (smp_processor_id())
+ smp_call_function((void *)bfin_reset, 0, 1);
else
- /* the bootrom checks to see how it was reset and will
- * automatically perform a software reset for us when
- * it starts executing boot
- */
- asm("raise 1;");
+ bfin_reset();
}
__attribute__((weak))