Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / serial / serial_sa1100.c

diff --git a/qemu/roms/u-boot/drivers/serial/serial_sa1100.c b/qemu/roms/u-boot/drivers/serial/serial_sa1100.c
new file mode 100644 (file)
index 0000000..78f241d
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/serial/serial_sa1100.c
@@ -0,0 +1,162 @@
+/*
+ * (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 <SA-1100.h>
+#include <serial.h>
+#include <linux/compiler.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void sa1100_serial_setbrg(void)
+{
+       unsigned int reg = 0;
+
+       if (gd->baudrate == 1200)
+               reg = 191;
+       else if (gd->baudrate == 9600)
+               reg = 23;
+       else if (gd->baudrate == 19200)
+               reg = 11;
+       else if (gd->baudrate == 38400)
+               reg = 5;
+       else if (gd->baudrate == 57600)
+               reg = 3;
+       else if (gd->baudrate == 115200)
+               reg = 1;
+       else
+               hang ();
+
+#ifdef CONFIG_SERIAL1
+       /* SA1110 uart function */
+       Ser1SDCR0 |= SDCR0_SUS;
+
+       /* Wait until port is ready ... */
+       while(Ser1UTSR1 & UTSR1_TBY) {}
+
+       /* init serial serial 1 */
+       Ser1UTCR3 = 0x00;
+       Ser1UTSR0 = 0xff;
+       Ser1UTCR0 = ( UTCR0_1StpBit | UTCR0_8BitData );
+       Ser1UTCR1 = 0;
+       Ser1UTCR2 = (u32)reg;
+       Ser1UTCR3 = ( UTCR3_RXE | UTCR3_TXE );
+#elif defined(CONFIG_SERIAL3)
+       /* Wait until port is ready ... */
+       while (Ser3UTSR1 & UTSR1_TBY) {
+       }
+
+       /* init serial serial 3 */
+       Ser3UTCR3 = 0x00;
+       Ser3UTSR0 = 0xff;
+       Ser3UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData);
+       Ser3UTCR1 = 0;
+       Ser3UTCR2 = (u32) reg;
+       Ser3UTCR3 = (UTCR3_RXE | UTCR3_TXE);
+#else
+#error "Bad: you didn't configured serial ..."
+#endif
+}
+
+
+/*
+ * 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 sa1100_serial_init(void)
+{
+       serial_setbrg ();
+
+       return (0);
+}
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+static void sa1100_serial_putc(const char c)
+{
+#ifdef CONFIG_SERIAL1
+       /* wait for room in the tx FIFO on SERIAL1 */
+       while ((Ser1UTSR0 & UTSR0_TFS) == 0);
+
+       Ser1UTDR = c;
+#elif defined(CONFIG_SERIAL3)
+       /* wait for room in the tx FIFO on SERIAL3 */
+       while ((Ser3UTSR0 & UTSR0_TFS) == 0);
+
+       Ser3UTDR = c;
+#endif
+
+       /* 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 sa1100_serial_tstc(void)
+{
+#ifdef CONFIG_SERIAL1
+       return Ser1UTSR1 & UTSR1_RNE;
+#elif defined(CONFIG_SERIAL3)
+       return Ser3UTSR1 & UTSR1_RNE;
+#endif
+}
+
+/*
+ * 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 sa1100_serial_getc(void)
+{
+#ifdef CONFIG_SERIAL1
+       while (!(Ser1UTSR1 & UTSR1_RNE));
+
+       return (char) Ser1UTDR & 0xff;
+#elif defined(CONFIG_SERIAL3)
+       while (!(Ser3UTSR1 & UTSR1_RNE));
+
+       return (char) Ser3UTDR & 0xff;
+#endif
+}
+
+static struct serial_device sa1100_serial_drv = {
+       .name   = "sa1100_serial",
+       .start  = sa1100_serial_init,
+       .stop   = NULL,
+       .setbrg = sa1100_serial_setbrg,
+       .putc   = sa1100_serial_putc,
+       .puts   = default_serial_puts,
+       .getc   = sa1100_serial_getc,
+       .tstc   = sa1100_serial_tstc,
+};
+
+void sa1100_serial_initialize(void)
+{
+       serial_register(&sa1100_serial_drv);
+}
+
+__weak struct serial_device *default_serial_console(void)
+{
+       return &sa1100_serial_drv;
+}