Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 267 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/drivers/serial/serial_s3c24x0.c b/qemu/roms/u-boot/drivers/serial/serial_s3c24x0.c
new file mode 100644
index 000000000..c07f4c9b4
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/serial/serial_s3c24x0.c
@@ -0,0 +1,267 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/compiler.h>
+#include <asm/arch/s3c24x0_cpu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SERIAL1
+#define UART_NR	S3C24X0_UART0
+
+#elif defined(CONFIG_SERIAL2)
+#define UART_NR	S3C24X0_UART1
+
+#elif defined(CONFIG_SERIAL3)
+#define UART_NR	S3C24X0_UART2
+
+#else
+#error "Bad: you didn't configure serial ..."
+#endif
+
+#include <asm/io.h>
+#include <serial.h>
+
+/* Multi serial device functions */
+#define DECLARE_S3C_SERIAL_FUNCTIONS(port) \
+	int s3serial##port##_init(void) \
+	{ \
+		return serial_init_dev(port); \
+	} \
+	void s3serial##port##_setbrg(void) \
+	{ \
+		serial_setbrg_dev(port); \
+	} \
+	int s3serial##port##_getc(void) \
+	{ \
+		return serial_getc_dev(port); \
+	} \
+	int s3serial##port##_tstc(void) \
+	{ \
+		return serial_tstc_dev(port); \
+	} \
+	void s3serial##port##_putc(const char c) \
+	{ \
+		serial_putc_dev(port, c); \
+	} \
+	void s3serial##port##_puts(const char *s) \
+	{ \
+		serial_puts_dev(port, s); \
+	}
+
+#define INIT_S3C_SERIAL_STRUCTURE(port, __name) {	\
+	.name	= __name,				\
+	.start	= s3serial##port##_init,		\
+	.stop	= NULL,					\
+	.setbrg	= s3serial##port##_setbrg,		\
+	.getc	= s3serial##port##_getc,		\
+	.tstc	= s3serial##port##_tstc,		\
+	.putc	= s3serial##port##_putc,		\
+	.puts	= s3serial##port##_puts,		\
+}
+
+#ifdef CONFIG_HWFLOW
+static int hwflow;
+#endif
+
+void _serial_setbrg(const int dev_index)
+{
+	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
+	unsigned int reg = 0;
+	int i;
+
+	/* value is calculated so : (int)(PCLK/16./baudrate) -1 */
+	reg = get_PCLK() / (16 * gd->baudrate) - 1;
+
+	writel(reg, &uart->ubrdiv);
+	for (i = 0; i < 100; i++)
+		/* Delay */ ;
+}
+
+static inline void serial_setbrg_dev(unsigned int dev_index)
+{
+	_serial_setbrg(dev_index);
+}
+
+/* Initialise the serial port. The settings are always 8 data bits, no parity,
+ * 1 stop bit, no start bits.
+ */
+static int serial_init_dev(const int dev_index)
+{
+	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
+
+#ifdef CONFIG_HWFLOW
+	hwflow = 0;	/* turned off by default */
+#endif
+
+	/* FIFO enable, Tx/Rx FIFO clear */
+	writel(0x07, &uart->ufcon);
+	writel(0x0, &uart->umcon);
+
+	/* Normal,No parity,1 stop,8 bit */
+	writel(0x3, &uart->ulcon);
+	/*
+	 * tx=level,rx=edge,disable timeout int.,enable rx error int.,
+	 * normal,interrupt or polling
+	 */
+	writel(0x245, &uart->ucon);
+
+#ifdef CONFIG_HWFLOW
+	writel(0x1, &uart->umcon);	/* rts up */
+#endif
+
+	/* FIXME: This is sooooooooooooooooooo ugly */
+#if defined(CONFIG_ARCH_GTA02_v1) || defined(CONFIG_ARCH_GTA02_v2)
+	/* we need auto hw flow control on the gsm and gps port */
+	if (dev_index == 0 || dev_index == 1)
+		writel(0x10, &uart->umcon);
+#endif
+	_serial_setbrg(dev_index);
+
+	return (0);
+}
+
+/*
+ * 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.
+ */
+int _serial_getc(const int dev_index)
+{
+	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
+
+	while (!(readl(&uart->utrstat) & 0x1))
+		/* wait for character to arrive */ ;
+
+	return readb(&uart->urxh) & 0xff;
+}
+
+static inline int serial_getc_dev(unsigned int dev_index)
+{
+	return _serial_getc(dev_index);
+}
+
+#ifdef CONFIG_HWFLOW
+int hwflow_onoff(int on)
+{
+	switch (on) {
+	case 0:
+	default:
+		break;		/* return current */
+	case 1:
+		hwflow = 1;	/* turn on */
+		break;
+	case -1:
+		hwflow = 0;	/* turn off */
+		break;
+	}
+	return hwflow;
+}
+#endif
+
+#ifdef CONFIG_MODEM_SUPPORT
+static int be_quiet = 0;
+void disable_putc(void)
+{
+	be_quiet = 1;
+}
+
+void enable_putc(void)
+{
+	be_quiet = 0;
+}
+#endif
+
+
+/*
+ * Output a single byte to the serial port.
+ */
+void _serial_putc(const char c, const int dev_index)
+{
+	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
+#ifdef CONFIG_MODEM_SUPPORT
+	if (be_quiet)
+		return;
+#endif
+
+	while (!(readl(&uart->utrstat) & 0x2))
+		/* wait for room in the tx FIFO */ ;
+
+#ifdef CONFIG_HWFLOW
+	while (hwflow && !(readl(&uart->umstat) & 0x1))
+		/* Wait for CTS up */ ;
+#endif
+
+	writeb(c, &uart->utxh);
+
+	/* If \n, also do \r */
+	if (c == '\n')
+		serial_putc('\r');
+}
+
+static inline void serial_putc_dev(unsigned int dev_index, const char c)
+{
+	_serial_putc(c, dev_index);
+}
+
+/*
+ * Test whether a character is in the RX buffer
+ */
+int _serial_tstc(const int dev_index)
+{
+	struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index);
+
+	return readl(&uart->utrstat) & 0x1;
+}
+
+static inline int serial_tstc_dev(unsigned int dev_index)
+{
+	return _serial_tstc(dev_index);
+}
+
+void _serial_puts(const char *s, const int dev_index)
+{
+	while (*s) {
+		_serial_putc(*s++, dev_index);
+	}
+}
+
+static inline void serial_puts_dev(int dev_index, const char *s)
+{
+	_serial_puts(s, dev_index);
+}
+
+DECLARE_S3C_SERIAL_FUNCTIONS(0);
+struct serial_device s3c24xx_serial0_device =
+INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0");
+DECLARE_S3C_SERIAL_FUNCTIONS(1);
+struct serial_device s3c24xx_serial1_device =
+INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1");
+DECLARE_S3C_SERIAL_FUNCTIONS(2);
+struct serial_device s3c24xx_serial2_device =
+INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2");
+
+__weak struct serial_device *default_serial_console(void)
+{
+#if defined(CONFIG_SERIAL1)
+	return &s3c24xx_serial0_device;
+#elif defined(CONFIG_SERIAL2)
+	return &s3c24xx_serial1_device;
+#elif defined(CONFIG_SERIAL3)
+	return &s3c24xx_serial2_device;
+#else
+#error "CONFIG_SERIAL? missing."
+#endif
+}
+
+void s3c24xx_serial_initialize(void)
+{
+	serial_register(&s3c24xx_serial0_device);
+	serial_register(&s3c24xx_serial1_device);
+	serial_register(&s3c24xx_serial2_device);
+}