[ADS5121] Support for the ADS5121 board
The following MPC5121e subsystems are supported:
- low-level CPU init
- NOR Boot Flash (common CFI driver)
- DDR SDRAM
- FEC
- I2C
- Watchdog
Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Signed-off-by: Rafal Jaworowski <raj@semihalf.com>
Signed-off-by: Jan Wrobel <wrr@semihalf.com>
diff --git a/cpu/mpc512x/serial.c b/cpu/mpc512x/serial.c
new file mode 100644
index 0000000..200ff2c
--- /dev/null
+++ b/cpu/mpc512x/serial.c
@@ -0,0 +1,197 @@
+/*
+ * (C) Copyright 2000 - 2007
+ * 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
+ *
+ * Based ont the MPC5200 PSC driver.
+ * Adapted for MPC512x by Jan Wrobel <wrr@semihalf.com>
+ */
+
+/*
+ * Minimal serial functions needed to use one of the PSC ports
+ * as serial console interface.
+ */
+
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_PSC_CONSOLE)
+
+static void fifo_init (volatile psc512x_t *psc)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+
+ /* reset Rx & Tx fifo slice */
+ psc->rfcmd = PSC_FIFO_RESET_SLICE;
+ psc->tfcmd = PSC_FIFO_RESET_SLICE;
+
+ /* disable Tx & Rx FIFO interrupts */
+ psc->rfintmask = 0;
+ psc->tfintmask = 0;
+
+ psc->tfsize = CONSOLE_FIFO_TX_SIZE | (CONSOLE_FIFO_TX_ADDR << 16);
+ psc->rfsize = CONSOLE_FIFO_RX_SIZE | (CONSOLE_FIFO_RX_ADDR << 16);
+
+ /* enable Tx & Rx FIFO slice */
+ psc->rfcmd = PSC_FIFO_ENABLE_SLICE;
+ psc->tfcmd = PSC_FIFO_ENABLE_SLICE;
+
+ im->fifoc.fifoc_cmd = FIFOC_DISABLE_CLOCK_GATE;
+ __asm__ volatile ("sync");
+}
+
+int serial_init(void)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+ unsigned long baseclk;
+ int div;
+
+ fifo_init (psc);
+
+ /* set MR register to point to MR1 */
+ psc->command = PSC_SEL_MODE_REG_1;
+
+ /* disable Tx/Rx */
+ psc->command = PSC_TX_DISABLE | PSC_RX_DISABLE;
+
+ /* choose the prescaler by 16 for the Tx/Rx clock generation */
+ psc->psc_clock_select = 0xdd00;
+
+ /* switch to UART mode */
+ psc->sicr = 0;
+
+ /* mode register points to mr1 */
+ /* configure parity, bit length and so on in mode register 1*/
+ psc->mode = PSC_MODE_8_BITS | PSC_MODE_PARNONE;
+ /* now, mode register points to mr2 */
+ psc->mode = PSC_MODE_1_STOPBIT;
+
+ /* calculate dividor for setting PSC CTUR and CTLR registers */
+ baseclk = (gd->ipb_clk + 8) / 16;
+ div = (baseclk + (gd->baudrate / 2)) / gd->baudrate;
+
+ psc->ctur = (div >> 8) & 0xff;
+ /* set baudrate */
+ psc->ctlr = div & 0xff;
+
+ /* disable all interrupts */
+ psc->psc_imr = 0;
+
+ /* reset and enable Rx/Tx */
+ psc->command = PSC_RST_RX;
+ psc->command = PSC_RST_TX;
+ psc->command = PSC_RX_ENABLE | PSC_TX_ENABLE;
+
+ return 0;
+}
+
+void serial_putc (const char c)
+{
+ volatile immap_t *im = (immap_t *)CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+
+ if (c == '\n')
+ serial_putc ('\r');
+
+ /* Wait for last character to go. */
+ while (!(psc->psc_status & PSC_SR_TXEMP))
+ ;
+
+ psc->tfdata_8 = c;
+}
+
+void serial_putc_raw (const char c)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+
+ /* Wait for last character to go. */
+ while (!(psc->psc_status & PSC_SR_TXEMP))
+ ;
+
+ psc->tfdata_8 = c;
+}
+
+
+void serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
+
+int serial_getc (void)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+
+ /* Wait for a character to arrive. */
+ while (psc->rfstat & PSC_FIFO_EMPTY)
+ ;
+
+ return psc->rfdata_8;
+}
+
+int serial_tstc (void)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+
+ return !(psc->rfstat & PSC_FIFO_EMPTY);
+}
+
+void serial_setbrg (void)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+ unsigned long baseclk, div;
+
+ baseclk = (gd->csb_clk + 8) / 16;
+ div = (baseclk + (gd->baudrate / 2)) / gd->baudrate;
+
+ psc->ctur = (div >> 8) & 0xFF;
+ psc->ctlr = div & 0xff; /* set baudrate */
+}
+
+void serial_setrts(int s)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+
+ if (s) {
+ /* Assert RTS (become LOW) */
+ psc->op1 = 0x1;
+ }
+ else {
+ /* Negate RTS (become HIGH) */
+ psc->op0 = 0x1;
+ }
+}
+
+int serial_getcts(void)
+{
+ volatile immap_t *im = (immap_t *) CFG_IMMR;
+ volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE];
+
+ return (psc->ip & 0x1) ? 0 : 1;
+}
+#endif /* CONFIG_PSC_CONSOLE */