ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/drivers/serial/serial.c b/marvell/uboot/drivers/serial/serial.c
new file mode 100644
index 0000000..df2b84a
--- /dev/null
+++ b/marvell/uboot/drivers/serial/serial.c
@@ -0,0 +1,581 @@
+/*
+ * (C) Copyright 2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <environment.h>
+#include <serial.h>
+#include <stdio_dev.h>
+#include <post.h>
+#include <linux/compiler.h>
+#include <errno.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct serial_device *serial_devices;
+static struct serial_device *serial_current;
+/*
+ * Table with supported baudrates (defined in config_xyz.h)
+ */
+static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
+
+/**
+ * serial_null() - Void registration routine of a serial driver
+ *
+ * This routine implements a void registration routine of a serial
+ * driver. The registration routine of a particular driver is aliased
+ * to this empty function in case the driver is not compiled into
+ * U-Boot.
+ */
+static void serial_null(void)
+{
+}
+
+/**
+ * on_baudrate() - Update the actual baudrate when the env var changes
+ *
+ * This will check for a valid baudrate and only apply it if valid.
+ */
+static int on_baudrate(const char *name, const char *value, enum env_op op,
+ int flags)
+{
+ int i;
+ int baudrate;
+
+ switch (op) {
+ case env_op_create:
+ case env_op_overwrite:
+ /*
+ * Switch to new baudrate if new baudrate is supported
+ */
+ baudrate = simple_strtoul(value, NULL, 10);
+
+ /* Not actually changing */
+ if (gd->baudrate == baudrate)
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(baudrate_table); ++i) {
+ if (baudrate == baudrate_table[i])
+ break;
+ }
+ if (i == ARRAY_SIZE(baudrate_table)) {
+ if ((flags & H_FORCE) == 0)
+ printf("## Baudrate %d bps not supported\n",
+ baudrate);
+ return 1;
+ }
+ if ((flags & H_INTERACTIVE) != 0) {
+ printf("## Switch baudrate to %d"
+ " bps and press ENTER ...\n", baudrate);
+ udelay(50000);
+ }
+
+ gd->baudrate = baudrate;
+#if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
+ gd->bd->bi_baudrate = baudrate;
+#endif
+
+ serial_setbrg();
+
+ udelay(50000);
+
+ if ((flags & H_INTERACTIVE) != 0)
+ while (1) {
+ if (getc() == '\r')
+ break;
+ }
+
+ return 0;
+ case env_op_delete:
+ printf("## Baudrate may not be deleted\n");
+ return 1;
+ default:
+ return 0;
+ }
+}
+U_BOOT_ENV_CALLBACK(baudrate, on_baudrate);
+
+/**
+ * serial_initfunc() - Forward declare of driver registration routine
+ * @name: Name of the real driver registration routine.
+ *
+ * This macro expands onto forward declaration of a driver registration
+ * routine, which is then used below in serial_initialize() function.
+ * The declaration is made weak and aliases to serial_null() so in case
+ * the driver is not compiled in, the function is still declared and can
+ * be used, but aliases to serial_null() and thus is optimized away.
+ */
+#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(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(oc_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(max3100_serial_initialize);
+serial_initfunc(mxc_serial_initialize);
+serial_initfunc(pl01x_serial_initialize);
+serial_initfunc(sa1100_serial_initialize);
+serial_initfunc(sh_serial_initialize);
+serial_initfunc(arm_dcc_initialize);
+serial_initfunc(mxs_auart_initialize);
+
+/**
+ * serial_register() - Register serial driver with serial driver core
+ * @dev: Pointer to the serial driver structure
+ *
+ * This function registers the serial driver supplied via @dev with
+ * serial driver core, thus making U-Boot aware of it and making it
+ * available for U-Boot to use. On platforms that still require manual
+ * relocation of constant variables, relocation of the supplied structure
+ * is performed.
+ */
+void serial_register(struct serial_device *dev)
+{
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+ if (dev->start)
+ dev->start += gd->reloc_off;
+ if (dev->stop)
+ dev->stop += gd->reloc_off;
+ if (dev->setbrg)
+ dev->setbrg += gd->reloc_off;
+ if (dev->getc)
+ dev->getc += gd->reloc_off;
+ if (dev->tstc)
+ dev->tstc += gd->reloc_off;
+ if (dev->putc)
+ dev->putc += gd->reloc_off;
+ if (dev->puts)
+ dev->puts += gd->reloc_off;
+#endif
+
+ dev->next = serial_devices;
+ serial_devices = dev;
+}
+
+/**
+ * serial_initialize() - Register all compiled-in serial port drivers
+ *
+ * This function registers all serial port drivers that are compiled
+ * into the U-Boot binary with the serial core, thus making them
+ * available to U-Boot to use. Lastly, this function assigns a default
+ * serial port to the serial core. That serial port is then used as a
+ * default output.
+ */
+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();
+ 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();
+ oc_serial_initialize();
+ sandbox_serial_initialize();
+ clps7111_serial_initialize();
+ imx_serial_initialize();
+ ixp_serial_initialize();
+ ks8695_serial_initialize();
+ lh7a40x_serial_initialize();
+ max3100_serial_initialize();
+ mxc_serial_initialize();
+ pl01x_serial_initialize();
+ sa1100_serial_initialize();
+ sh_serial_initialize();
+ arm_dcc_initialize();
+ mxs_auart_initialize();
+
+ serial_assign(default_serial_console()->name);
+}
+
+/**
+ * serial_stdio_init() - Register serial ports with STDIO core
+ *
+ * This function generates a proxy driver for each serial port driver.
+ * These proxy drivers then register with the STDIO core, making the
+ * serial drivers available as STDIO devices.
+ */
+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;
+ }
+}
+
+/**
+ * serial_assign() - Select the serial output device by name
+ * @name: Name of the serial driver to be used as default output
+ *
+ * This function configures the serial output multiplexing by
+ * selecting which serial device will be used as default. In case
+ * the STDIO "serial" device is selected as stdin/stdout/stderr,
+ * the serial device previously configured by this function will be
+ * used for the particular operation.
+ *
+ * Returns 0 on success, negative on error.
+ */
+int serial_assign(const char *name)
+{
+ struct serial_device *s;
+
+ for (s = serial_devices; s; s = s->next) {
+ if (strcmp(s->name, name))
+ continue;
+ serial_current = s;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+/**
+ * serial_reinit_all() - Reinitialize all compiled-in serial ports
+ *
+ * This function reinitializes all serial ports that are compiled
+ * into U-Boot by calling their serial_start() functions.
+ */
+void serial_reinit_all(void)
+{
+ struct serial_device *s;
+
+ for (s = serial_devices; s; s = s->next)
+ s->start();
+}
+
+/**
+ * get_current() - Return pointer to currently selected serial port
+ *
+ * This function returns a pointer to currently selected serial port.
+ * The currently selected serial port is altered by serial_assign()
+ * function.
+ *
+ * In case this function is called before relocation or before any serial
+ * port is configured, this function calls default_serial_console() to
+ * determine the serial port. Otherwise, the configured serial port is
+ * returned.
+ *
+ * Returns pointer to the currently selected serial port on success,
+ * NULL on error.
+ */
+static struct serial_device *get_current(void)
+{
+ struct serial_device *dev;
+
+ if (!(gd->flags & GD_FLG_RELOC))
+ dev = default_serial_console();
+ else if (!serial_current)
+ dev = default_serial_console();
+ else
+ dev = serial_current;
+
+ /* 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
+ }
+
+ return dev;
+}
+
+/**
+ * serial_init() - Initialize currently selected serial port
+ *
+ * This function initializes the currently selected serial port. This
+ * usually involves setting up the registers of that particular port,
+ * enabling clock and such. This function uses the get_current() call
+ * to determine which port is selected.
+ *
+ * Returns 0 on success, negative on error.
+ */
+int serial_init(void)
+{
+ return get_current()->start();
+}
+
+/**
+ * serial_setbrg() - Configure baud-rate of currently selected serial port
+ *
+ * This function configures the baud-rate of the currently selected
+ * serial port. The baud-rate is retrieved from global data within
+ * the serial port driver. This function uses the get_current() call
+ * to determine which port is selected.
+ *
+ * Returns 0 on success, negative on error.
+ */
+void serial_setbrg(void)
+{
+ get_current()->setbrg();
+}
+
+/**
+ * serial_getc() - Read character from currently selected serial port
+ *
+ * This function retrieves a character from currently selected serial
+ * port. In case there is no character waiting on the serial port,
+ * this function will block and wait for the character to appear. This
+ * function uses the get_current() call to determine which port is
+ * selected.
+ *
+ * Returns the character on success, negative on error.
+ */
+int serial_getc(void)
+{
+ return get_current()->getc();
+}
+
+/**
+ * serial_tstc() - Test if data is available on currently selected serial port
+ *
+ * This function tests if one or more characters are available on
+ * currently selected serial port. This function never blocks. This
+ * function uses the get_current() call to determine which port is
+ * selected.
+ *
+ * Returns positive if character is available, zero otherwise.
+ */
+int serial_tstc(void)
+{
+ return get_current()->tstc();
+}
+
+/**
+ * serial_putc() - Output character via currently selected serial port
+ * @c: Single character to be output from the serial port.
+ *
+ * This function outputs a character via currently selected serial
+ * port. This character is passed to the serial port driver responsible
+ * for controlling the hardware. The hardware may still be in process
+ * of transmitting another character, therefore this function may block
+ * for a short amount of time. This function uses the get_current()
+ * call to determine which port is selected.
+ */
+void serial_putc(const char c)
+{
+ get_current()->putc(c);
+}
+
+/**
+ * serial_puts() - Output string via currently selected serial port
+ * @s: Zero-terminated string to be output from the serial port.
+ *
+ * This function outputs a zero-terminated string via currently
+ * selected serial port. This function behaves as an accelerator
+ * in case the hardware can queue multiple characters for transfer.
+ * The whole string that is to be output is available to the function
+ * implementing the hardware manipulation. Transmitting the whole
+ * string may take some time, thus this function may block for some
+ * amount of time. This function uses the get_current() call to
+ * determine which port is selected.
+ */
+void serial_puts(const char *s)
+{
+ get_current()->puts(s);
+}
+
+/**
+ * default_serial_puts() - Output string by calling serial_putc() in loop
+ * @s: Zero-terminated string to be output from the serial port.
+ *
+ * This function outputs a zero-terminated string by calling serial_putc()
+ * in a loop. Most drivers do not support queueing more than one byte for
+ * transfer, thus this function precisely implements their serial_puts().
+ *
+ * To optimize the number of get_current() calls, this function only
+ * calls get_current() once and then directly accesses the putc() call
+ * of the &struct serial_device .
+ */
+void default_serial_puts(const char *s)
+{
+ struct serial_device *dev = get_current();
+ while (*s)
+ dev->putc(*s++);
+}
+
+#if CONFIG_POST & CONFIG_SYS_POST_UART
+static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE;
+
+/**
+ * uart_post_test() - Test the currently selected serial port using POST
+ * @flags: POST framework flags
+ *
+ * Do a loopback test of the currently selected serial port. This
+ * function is only useful in the context of the POST testing framwork.
+ * The serial port is firstly configured into loopback mode and then
+ * characters are sent through it.
+ *
+ * Returns 0 on success, value otherwise.
+ */
+/* 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