summaryrefslogtreecommitdiff
path: root/drivers/serial/serial.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/serial/serial.c')
-rw-r--r--drivers/serial/serial.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
new file mode 100644
index 0000000..acb74af
--- /dev/null
+++ b/drivers/serial/serial.c
@@ -0,0 +1,354 @@
+/*
+ * (C) Copyright 2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 <common.h>
+#include <serial.h>
+#include <stdio_dev.h>
+#include <post.h>
+#include <linux/compiler.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct serial_device *serial_devices;
+static struct serial_device *serial_current;
+
+static void serial_null(void)
+{
+}
+
+#define serial_initfunc(name) \
+ void name(void) \
+ __attribute__((weak, alias("serial_null")));
+
+serial_initfunc(mpc8xx_serial_initialize);
+serial_initfunc(ns16550_serial_initialize);
+serial_initfunc(pxa_serial_initialize);
+serial_initfunc(s3c24xx_serial_initialize);
+serial_initfunc(s5p_serial_initialize);
+serial_initfunc(zynq_serial_initalize);
+serial_initfunc(bfin_serial_initialize);
+serial_initfunc(bfin_jtag_initialize);
+serial_initfunc(mpc512x_serial_initialize);
+serial_initfunc(uartlite_serial_initialize);
+serial_initfunc(au1x00_serial_initialize);
+serial_initfunc(asc_serial_initialize);
+serial_initfunc(jz_serial_initialize);
+serial_initfunc(mpc5xx_serial_initialize);
+serial_initfunc(mpc8220_serial_initialize);
+serial_initfunc(mpc8260_scc_serial_initialize);
+serial_initfunc(mpc8260_smc_serial_initialize);
+serial_initfunc(mpc85xx_serial_initialize);
+serial_initfunc(iop480_serial_initialize);
+serial_initfunc(leon2_serial_initialize);
+serial_initfunc(leon3_serial_initialize);
+serial_initfunc(marvell_serial_initialize);
+serial_initfunc(amirix_serial_initialize);
+serial_initfunc(bmw_serial_initialize);
+serial_initfunc(cogent_serial_initialize);
+serial_initfunc(cpci750_serial_initialize);
+serial_initfunc(evb64260_serial_initialize);
+serial_initfunc(ml2_serial_initialize);
+serial_initfunc(sconsole_serial_initialize);
+serial_initfunc(p3mx_serial_initialize);
+serial_initfunc(altera_jtag_serial_initialize);
+serial_initfunc(altera_serial_initialize);
+serial_initfunc(atmel_serial_initialize);
+serial_initfunc(lpc32xx_serial_initialize);
+serial_initfunc(mcf_serial_initialize);
+serial_initfunc(ns9750_serial_initialize);
+serial_initfunc(oc_serial_initialize);
+serial_initfunc(s3c4510b_serial_initialize);
+serial_initfunc(s3c64xx_serial_initialize);
+serial_initfunc(sandbox_serial_initialize);
+serial_initfunc(clps7111_serial_initialize);
+serial_initfunc(imx_serial_initialize);
+serial_initfunc(ixp_serial_initialize);
+serial_initfunc(ks8695_serial_initialize);
+serial_initfunc(lh7a40x_serial_initialize);
+serial_initfunc(lpc2292_serial_initialize);
+serial_initfunc(max3100_serial_initialize);
+serial_initfunc(mxc_serial_initialize);
+serial_initfunc(netarm_serial_initialize);
+serial_initfunc(pl01x_serial_initialize);
+serial_initfunc(s3c44b0_serial_initialize);
+serial_initfunc(sa1100_serial_initialize);
+serial_initfunc(sh_serial_initialize);
+
+void serial_register(struct serial_device *dev)
+{
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+ dev->start += gd->reloc_off;
+ dev->setbrg += gd->reloc_off;
+ dev->getc += gd->reloc_off;
+ dev->tstc += gd->reloc_off;
+ dev->putc += gd->reloc_off;
+ dev->puts += gd->reloc_off;
+#endif
+
+ dev->next = serial_devices;
+ serial_devices = dev;
+}
+
+void serial_initialize(void)
+{
+ mpc8xx_serial_initialize();
+ ns16550_serial_initialize();
+ pxa_serial_initialize();
+ s3c24xx_serial_initialize();
+ s5p_serial_initialize();
+ mpc512x_serial_initialize();
+ bfin_serial_initialize();
+ bfin_jtag_initialize();
+ uartlite_serial_initialize();
+ zynq_serial_initalize();
+ au1x00_serial_initialize();
+ asc_serial_initialize();
+ jz_serial_initialize();
+ mpc5xx_serial_initialize();
+ mpc8220_serial_initialize();
+ mpc8260_scc_serial_initialize();
+ mpc8260_smc_serial_initialize();
+ mpc85xx_serial_initialize();
+ iop480_serial_initialize();
+ leon2_serial_initialize();
+ leon3_serial_initialize();
+ marvell_serial_initialize();
+ amirix_serial_initialize();
+ bmw_serial_initialize();
+ cogent_serial_initialize();
+ cpci750_serial_initialize();
+ evb64260_serial_initialize();
+ ml2_serial_initialize();
+ sconsole_serial_initialize();
+ p3mx_serial_initialize();
+ altera_jtag_serial_initialize();
+ altera_serial_initialize();
+ atmel_serial_initialize();
+ lpc32xx_serial_initialize();
+ mcf_serial_initialize();
+ ns9750_serial_initialize();
+ oc_serial_initialize();
+ s3c4510b_serial_initialize();
+ s3c64xx_serial_initialize();
+ sandbox_serial_initialize();
+ clps7111_serial_initialize();
+ imx_serial_initialize();
+ ixp_serial_initialize();
+ ks8695_serial_initialize();
+ lh7a40x_serial_initialize();
+ lpc2292_serial_initialize();
+ max3100_serial_initialize();
+ mxc_serial_initialize();
+ netarm_serial_initialize();
+ pl01x_serial_initialize();
+ s3c44b0_serial_initialize();
+ sa1100_serial_initialize();
+ sh_serial_initialize();
+
+ serial_assign(default_serial_console()->name);
+}
+
+void serial_stdio_init(void)
+{
+ struct stdio_dev dev;
+ struct serial_device *s = serial_devices;
+
+ while (s) {
+ memset(&dev, 0, sizeof(dev));
+
+ strcpy(dev.name, s->name);
+ dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
+
+ dev.start = s->start;
+ dev.stop = s->stop;
+ dev.putc = s->putc;
+ dev.puts = s->puts;
+ dev.getc = s->getc;
+ dev.tstc = s->tstc;
+
+ stdio_register(&dev);
+
+ s = s->next;
+ }
+}
+
+int serial_assign(const char *name)
+{
+ struct serial_device *s;
+
+ for (s = serial_devices; s; s = s->next) {
+ if (strcmp(s->name, name) == 0) {
+ serial_current = s;
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+void serial_reinit_all(void)
+{
+ struct serial_device *s;
+
+ for (s = serial_devices; s; s = s->next)
+ s->start();
+}
+
+static struct serial_device *get_current(void)
+{
+ struct serial_device *dev;
+
+ if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
+ dev = default_serial_console();
+
+ /* We must have a console device */
+ if (!dev) {
+#ifdef CONFIG_SPL_BUILD
+ puts("Cannot find console\n");
+ hang();
+#else
+ panic("Cannot find console\n");
+#endif
+ }
+ } else
+ dev = serial_current;
+ return dev;
+}
+
+int serial_init(void)
+{
+ return get_current()->start();
+}
+
+void serial_setbrg(void)
+{
+ get_current()->setbrg();
+}
+
+int serial_getc(void)
+{
+ return get_current()->getc();
+}
+
+int serial_tstc(void)
+{
+ return get_current()->tstc();
+}
+
+void serial_putc(const char c)
+{
+ get_current()->putc(c);
+}
+
+void serial_puts(const char *s)
+{
+ get_current()->puts(s);
+}
+
+#if CONFIG_POST & CONFIG_SYS_POST_UART
+static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE;
+
+/* Mark weak until post/cpu/.../uart.c migrate over */
+__weak
+int uart_post_test(int flags)
+{
+ unsigned char c;
+ int ret, saved_baud, b;
+ struct serial_device *saved_dev, *s;
+ bd_t *bd = gd->bd;
+
+ /* Save current serial state */
+ ret = 0;
+ saved_dev = serial_current;
+ saved_baud = bd->bi_baudrate;
+
+ for (s = serial_devices; s; s = s->next) {
+ /* If this driver doesn't support loop back, skip it */
+ if (!s->loop)
+ continue;
+
+ /* Test the next device */
+ serial_current = s;
+
+ ret = serial_init();
+ if (ret)
+ goto done;
+
+ /* Consume anything that happens to be queued */
+ while (serial_tstc())
+ serial_getc();
+
+ /* Enable loop back */
+ s->loop(1);
+
+ /* Test every available baud rate */
+ for (b = 0; b < ARRAY_SIZE(bauds); ++b) {
+ bd->bi_baudrate = bauds[b];
+ serial_setbrg();
+
+ /*
+ * Stick to printable chars to avoid issues:
+ * - terminal corruption
+ * - serial program reacting to sequences and sending
+ * back random extra data
+ * - most serial drivers add in extra chars (like \r\n)
+ */
+ for (c = 0x20; c < 0x7f; ++c) {
+ /* Send it out */
+ serial_putc(c);
+
+ /* Make sure it's the same one */
+ ret = (c != serial_getc());
+ if (ret) {
+ s->loop(0);
+ goto done;
+ }
+
+ /* Clean up the output in case it was sent */
+ serial_putc('\b');
+ ret = ('\b' != serial_getc());
+ if (ret) {
+ s->loop(0);
+ goto done;
+ }
+ }
+ }
+
+ /* Disable loop back */
+ s->loop(0);
+
+ /* XXX: There is no serial_stop() !? */
+ if (s->stop)
+ s->stop();
+ }
+
+ done:
+ /* Restore previous serial state */
+ serial_current = saved_dev;
+ bd->bi_baudrate = saved_baud;
+ serial_reinit_all();
+ serial_setbrg();
+
+ return ret;
+}
+#endif