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authorwdenk <wdenk>2002-09-18 21:21:13 +0000
committerwdenk <wdenk>2002-09-18 21:21:13 +0000
commit91d3256c6ef94531e731d5484b04a8a082cc5b98 (patch)
tree57369fc587d8de820623f512b510992794c6ad0f /common
parent4f163801ae9c2ce25130001793a7b222e4d79314 (diff)
downloadu-boot-linaro-stable-91d3256c6ef94531e731d5484b04a8a082cc5b98.tar.gz
Initial revision
Diffstat (limited to 'common')
-rw-r--r--common/devices.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/common/devices.c b/common/devices.c
new file mode 100644
index 000000000..2d0b04614
--- /dev/null
+++ b/common/devices.c
@@ -0,0 +1,193 @@
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <stdarg.h>
+#include <malloc.h>
+#include <devices.h>
+#include <i2c.h>
+
+list_t devlist = 0;
+device_t *stdio_devices[] = { NULL, NULL, NULL };
+char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
+
+#ifdef CFG_DEVICE_NULLDEV
+void nulldev_putc(const char c)
+{
+ /* nulldev is empty! */
+}
+
+void nulldev_puts(const char *s)
+{
+ /* nulldev is empty! */
+}
+
+int nulldev_input(void)
+{
+ /* nulldev is empty! */
+ return 0;
+}
+#endif
+
+/**************************************************************************
+ * SYSTEM DRIVERS
+ **************************************************************************
+ */
+
+static void drv_system_init (void)
+{
+ device_t dev;
+
+ memset (&dev, 0, sizeof (dev));
+
+ strcpy (dev.name, "serial");
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
+#if CONFIG_SERIAL_SOFTWARE_FIFO
+ dev.putc = serial_buffered_putc;
+ dev.puts = serial_buffered_puts;
+ dev.getc = serial_buffered_getc;
+ dev.tstc = serial_buffered_tstc;
+#else
+ dev.putc = serial_putc;
+ dev.puts = serial_puts;
+ dev.getc = serial_getc;
+ dev.tstc = serial_tstc;
+#endif
+
+ device_register (&dev);
+
+#ifdef CFG_DEVICE_NULLDEV
+ memset (&dev, 0, sizeof (dev));
+
+ strcpy (dev.name, "nulldev");
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
+ dev.putc = nulldev_putc;
+ dev.puts = nulldev_puts;
+ dev.getc = nulldev_input;
+ dev.tstc = nulldev_input;
+
+ device_register (&dev);
+#endif
+}
+
+/**************************************************************************
+ * DEVICES
+ **************************************************************************
+ */
+
+int device_register (device_t * dev)
+{
+ ListInsertItem (devlist, dev, LIST_END);
+ return 0;
+}
+
+/* deregister the device "devname".
+ * returns 0 if success, -1 if device is assigned and 1 if devname not found
+ */
+#ifdef CFG_DEVICE_DEREGISTER
+int device_deregister(char *devname)
+{
+ int i,l,dev_index;
+ device_t *dev = NULL;
+ char temp_names[3][8];
+
+ dev_index=-1;
+ for (i=1; i<=ListNumItems(devlist); i++) {
+ dev = ListGetPtrToItem (devlist, i);
+ if(strcmp(dev->name,devname)==0) {
+ dev_index=i;
+ break;
+ }
+ }
+ if(dev_index<0) /* device not found */
+ return 0;
+ /* get stdio devices (ListRemoveItem changes the dev list) */
+ for (l=0 ; l< MAX_FILES; l++) {
+ if (stdio_devices[l] == dev) {
+ /* Device is assigned -> report error */
+ return -1;
+ }
+ memcpy (&temp_names[l][0],
+ stdio_devices[l]->name,
+ sizeof(stdio_devices[l]->name));
+ }
+ ListRemoveItem(devlist,NULL,dev_index);
+ /* reassign Device list */
+ for (i=1; i<=ListNumItems(devlist); i++) {
+ dev = ListGetPtrToItem (devlist, i);
+ for (l=0 ; l< MAX_FILES; l++) {
+ if(strcmp(dev->name,temp_names[l])==0) {
+ stdio_devices[l] = dev;
+ }
+ }
+ }
+ return 0;
+}
+#endif /* CFG_DEVICE_DEREGISTER */
+
+int devices_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ int i;
+ ulong relocation_offset = gd->reloc_off;
+
+ /* relocate device name pointers */
+ for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
+ stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
+ relocation_offset);
+ }
+
+ /* Initialize the list */
+ devlist = ListCreate (sizeof (device_t));
+
+ if (devlist == NULL) {
+ eputs ("Cannot initialize the list of devices!\n");
+ return -1;
+ }
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
+ i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+#endif
+#ifdef CONFIG_LCD
+ drv_lcd_init ();
+#endif
+#ifdef CONFIG_VIDEO
+ drv_video_init ();
+#endif
+#ifdef CONFIG_WL_4PPM_KEYBOARD
+ drv_wlkbd_init ();
+#endif
+ drv_system_init ();
+
+ gd-> flags |= GD_FLG_DEVINIT; /* device initialization done */
+
+ return (0);
+}
+
+int devices_done (void)
+{
+ ListDispose (devlist);
+
+ return 0;
+}