Rename src/superio/NSC to src/superio/nsc.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>




git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2473 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 33 insertions, 0 deletions

diff --git a/src/superio/nsc/pc97317/pc97317_early_serial.c b/src/superio/nsc/pc97317/pc97317_early_serial.c
new file mode 100644
index 0000000000..3aa7f99890
--- /dev/null
+++ b/src/superio/nsc/pc97317/pc97317_early_serial.c
@@ -0,0 +1,33 @@
+#include <arch/romcc_io.h>
+#include "pc97317.h"
+
+#define PM_DEV PNP_DEV(0x2e, PC97317_PM)
+#define PM_BASE 0xe8
+
+/* The pc97317 needs clocks to be set up before the serial port will operate */
+
+static void pc97317_enable_serial(device_t dev, unsigned iobase)
+{
+	/* Set base address of power management unit */
+
+	pnp_set_logical_device(PM_DEV);
+	pnp_set_enable(dev, 0);
+	pnp_set_iobase(dev, PNP_IDX_IO0, PM_BASE);
+	pnp_set_enable(dev, 1);
+
+	/* Use on-chip clock multiplier */
+
+	outb(0x03, PM_BASE);
+	outb(inb(PM_BASE + 1) | 0x07, PM_BASE + 1);
+	
+	/* Wait for the clock to stabilise */
+	while(!inb(PM_BASE + 1 & 0x80))
+		;
+
+	/* Set the base address of the port */
+
+	pnp_set_logical_device(dev);
+	pnp_set_enable(dev, 0);
+	pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
+	pnp_set_enable(dev, 1);
+}