ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/drivers/serial/serial_ixp.c b/marvell/uboot/drivers/serial/serial_ixp.c
new file mode 100644
index 0000000..b9d0f5b
--- /dev/null
+++ b/marvell/uboot/drivers/serial/serial_ixp.c
@@ -0,0 +1,130 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/ixp425.h>
+#include <watchdog.h>
+#include <serial.h>
+#include <linux/compiler.h>
+
+/*
+ * 14.7456 MHz
+ * Baud Rate = --------------
+ * 16 x Divisor
+ */
+#define SERIAL_CLOCK 921600
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void ixp_serial_setbrg(void)
+{
+ unsigned int quot = 0;
+ int uart = CONFIG_SYS_IXP425_CONSOLE;
+
+ if ((gd->baudrate <= SERIAL_CLOCK) && (SERIAL_CLOCK % gd->baudrate == 0))
+ quot = SERIAL_CLOCK / gd->baudrate;
+ else
+ hang ();
+
+ IER(uart) = 0; /* Disable for now */
+ FCR(uart) = 0; /* No fifos enabled */
+
+ /* set baud rate */
+ LCR(uart) = LCR_WLS0 | LCR_WLS1 | LCR_DLAB;
+ DLL(uart) = quot & 0xff;
+ DLH(uart) = quot >> 8;
+ LCR(uart) = LCR_WLS0 | LCR_WLS1;
+#ifdef CONFIG_SERIAL_RTS_ACTIVE
+ MCR(uart) = MCR_RTS; /* set RTS active */
+#else
+ MCR(uart) = 0; /* set RTS inactive */
+#endif
+ IER(uart) = IER_UUE;
+}
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+static int ixp_serial_init(void)
+{
+ serial_setbrg ();
+
+ return (0);
+}
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+static void ixp_serial_putc(const char c)
+{
+ /* wait for room in the tx FIFO on UART */
+ while ((LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_TEMT) == 0)
+ WATCHDOG_RESET(); /* Reset HW Watchdog, if needed */
+
+ THR(CONFIG_SYS_IXP425_CONSOLE) = c;
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc ('\r');
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+static int ixp_serial_tstc(void)
+{
+ return LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_DR;
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is succesfull, the character read is
+ * written into its argument c.
+ */
+static int ixp_serial_getc(void)
+{
+ while (!(LSR(CONFIG_SYS_IXP425_CONSOLE) & LSR_DR))
+ WATCHDOG_RESET(); /* Reset HW Watchdog, if needed */
+
+ return (char) RBR(CONFIG_SYS_IXP425_CONSOLE) & 0xff;
+}
+
+static struct serial_device ixp_serial_drv = {
+ .name = "ixp_serial",
+ .start = ixp_serial_init,
+ .stop = NULL,
+ .setbrg = ixp_serial_setbrg,
+ .putc = ixp_serial_putc,
+ .puts = default_serial_puts,
+ .getc = ixp_serial_getc,
+ .tstc = ixp_serial_tstc,
+};
+
+void ixp_serial_initialize(void)
+{
+ serial_register(&ixp_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+ return &ixp_serial_drv;
+}