diff options
author | Ronald G. Minnich <rminnich@gmail.com> | 2006-08-17 20:31:09 +0000 |
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committer | Ronald G. Minnich <rminnich@gmail.com> | 2006-08-17 20:31:09 +0000 |
commit | 8a02b7d54eab215592c72e1a9dd9f998de98abd8 (patch) | |
tree | f0c97835c5c452637e56ba3cd8947c3bb5f33029 /src/superio/smsc/lpc47m10x/lpc47m10x_early_serial.c | |
parent | bff323b93b8cdee0362d1351b8fde54fd2c66e45 (diff) |
add smsc part. Mod sun board to use smsc part for now
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2380 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/superio/smsc/lpc47m10x/lpc47m10x_early_serial.c')
-rw-r--r-- | src/superio/smsc/lpc47m10x/lpc47m10x_early_serial.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/superio/smsc/lpc47m10x/lpc47m10x_early_serial.c b/src/superio/smsc/lpc47m10x/lpc47m10x_early_serial.c new file mode 100644 index 0000000000..013453a9f4 --- /dev/null +++ b/src/superio/smsc/lpc47m10x/lpc47m10x_early_serial.c @@ -0,0 +1,69 @@ +/*
+ * $Header$
+ *
+ * lpc47m10x_early_serial.c: Pre-RAM driver for SMSC LPC47M10X2 Super I/O chip
+ * derived from lpc47n217 + *
+ * Copyright (C) 2005 Digital Design Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * $Log$
+ *
+ */
+ +#include <arch/romcc_io.h> +#include "lpc47m10x.h" + +//----------------------------------------------------------------------------------
+// Function: pnp_enter_conf_state
+// Parameters: dev - high 8 bits = Super I/O port
+// Return Value: None
+// Description: Enable access to the LPC47M10X2's configuration registers.
+//
+static inline void pnp_enter_conf_state(device_t dev) { + unsigned port = dev>>8; + outb(0x55, port); +}
+ +//----------------------------------------------------------------------------------
+// Function: pnp_exit_conf_state
+// Parameters: dev - high 8 bits = Super I/O port
+// Return Value: None
+// Description: Disable access to the LPC47M10X2's configuration registers.
+//
+static void pnp_exit_conf_state(device_t dev) { + unsigned port = dev>>8; + outb(0xaa, port); +} + +//----------------------------------------------------------------------------------
+// Function: lpc47b272_enable_serial
+// Parameters: dev - high 8 bits = Super I/O port,
+// low 8 bits = logical device number (per lpc47b272.h)
+// iobase - processor I/O port address to assign to this serial device
+// Return Value: bool
+// Description: Configure the base I/O port of the specified serial device
+// and enable the serial device.
+//
+static void lpc47b272_enable_serial(device_t dev, unsigned iobase) +{ + pnp_enter_conf_state(dev); + pnp_set_logical_device(dev); + pnp_set_enable(dev, 0); + pnp_set_iobase(dev, PNP_IDX_IO0, iobase); + pnp_set_enable(dev, 1); + pnp_exit_conf_state(dev); +} |