]> git.ipfire.org Git - people/ms/u-boot.git/blobdiff - common/serial.c
serial: arm: Implement CONFIG_SERIAL_MULTI into mxc serial driver
[people/ms/u-boot.git] / common / serial.c
index 25b235aa135beeccdcf22ee966a306f5afb123fd..1ac8625fa552609628f9da015ab11a20f3007752 100644 (file)
 #include <common.h>
 #include <serial.h>
 #include <stdio_dev.h>
+#include <post.h>
+#include <linux/compiler.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static struct serial_device *serial_devices = NULL;
-static struct serial_device *serial_current = NULL;
+static struct serial_device *serial_devices;
+static struct serial_device *serial_current;
 
-#if !defined(CONFIG_LWMON) && !defined(CONFIG_PXA27X)
-struct serial_device *__default_serial_console (void)
+static void serial_null(void)
 {
-#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
-       return &serial_smc_device;
-#elif defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
-   || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
-       return &serial_scc_device;
-#elif defined(CONFIG_4xx) \
-   || defined(CONFIG_MB86R0x) || defined(CONFIG_MPC5xxx) \
-   || defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) \
-   || defined(CONFIG_MPC86xx) || defined(CONFIG_SYS_SC520)
-#if defined(CONFIG_CONS_INDEX) && defined(CONFIG_SYS_NS16550_SERIAL)
-#if (CONFIG_CONS_INDEX==1)
-       return &eserial1_device;
-#elif (CONFIG_CONS_INDEX==2)
-       return &eserial2_device;
-#elif (CONFIG_CONS_INDEX==3)
-       return &eserial3_device;
-#elif (CONFIG_CONS_INDEX==4)
-       return &eserial4_device;
-#else
-#error "Bad CONFIG_CONS_INDEX."
-#endif
-       return &serial0_device;
-#endif
-#elif defined(CONFIG_MPC512X)
-#if (CONFIG_PSC_CONSOLE == 3)
-               return &serial3_device;
-#elif (CONFIG_PSC_CONSOLE == 6)
-               return &serial6_device;
-#else
-#error "Bad CONFIG_PSC_CONSOLE."
-#endif
-#elif defined(CONFIG_S3C2410)
-#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
-#elif defined(CONFIG_S5P)
-#if defined(CONFIG_SERIAL0)
-       return &s5p_serial0_device;
-#elif defined(CONFIG_SERIAL1)
-       return &s5p_serial1_device;
-#elif defined(CONFIG_SERIAL2)
-       return &s5p_serial2_device;
-#elif defined(CONFIG_SERIAL3)
-       return &s5p_serial3_device;
-#else
-#error "CONFIG_SERIAL? missing."
-#endif
-#elif defined(CONFIG_OMAP3_ZOOM2)
-               return ZOOM2_DEFAULT_SERIAL_DEVICE;
-#else
-#error No default console
-#endif
 }
 
-struct serial_device *default_serial_console(void) __attribute__((weak, alias("__default_serial_console")));
-#endif
-
-int serial_register (struct serial_device *dev)
+#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(mpc8220_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(ns9750_serial_initialize);
+serial_initfunc(oc_serial_initialize);
+serial_initfunc(s3c4510b_serial_initialize);
+serial_initfunc(s3c64xx_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(lpc2292_serial_initialize);
+serial_initfunc(max3100_serial_initialize);
+serial_initfunc(mxc_serial_initialize);
+
+void serial_register(struct serial_device *dev)
 {
-#ifndef CONFIG_RELOC_FIXUP_WORKS
-       dev->init += gd->reloc_off;
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+       dev->start += gd->reloc_off;
        dev->setbrg += gd->reloc_off;
        dev->getc += gd->reloc_off;
        dev->tstc += gd->reloc_off;
@@ -109,101 +102,92 @@ int serial_register (struct serial_device *dev)
 
        dev->next = serial_devices;
        serial_devices = dev;
-
-       return 0;
 }
 
-void serial_initialize (void)
+void serial_initialize(void)
 {
-#if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
-       serial_register (&serial_smc_device);
-#endif
-#if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
- || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
-       serial_register (&serial_scc_device);
-#endif
-
-#if defined(CONFIG_SYS_NS16550_SERIAL)
-#if defined(CONFIG_SYS_NS16550_COM1)
-       serial_register(&eserial1_device);
-#endif
-#if defined(CONFIG_SYS_NS16550_COM2)
-       serial_register(&eserial2_device);
-#endif
-#if defined(CONFIG_SYS_NS16550_COM3)
-       serial_register(&eserial3_device);
-#endif
-#if defined(CONFIG_SYS_NS16550_COM4)
-       serial_register(&eserial4_device);
-#endif
-#endif /* CONFIG_SYS_NS16550_SERIAL */
-#if defined (CONFIG_FFUART)
-       serial_register(&serial_ffuart_device);
-#endif
-#if defined (CONFIG_BTUART)
-       serial_register(&serial_btuart_device);
-#endif
-#if defined (CONFIG_STUART)
-       serial_register(&serial_stuart_device);
-#endif
-#if defined(CONFIG_S3C2410)
-       serial_register(&s3c24xx_serial0_device);
-       serial_register(&s3c24xx_serial1_device);
-       serial_register(&s3c24xx_serial2_device);
-#endif
-#if defined(CONFIG_S5P)
-       serial_register(&s5p_serial0_device);
-       serial_register(&s5p_serial1_device);
-       serial_register(&s5p_serial2_device);
-       serial_register(&s5p_serial3_device);
-#endif
-#if defined(CONFIG_MPC512X)
-#if defined(CONFIG_SYS_PSC1)
-       serial_register(&serial1_device);
-#endif
-#if defined(CONFIG_SYS_PSC3)
-       serial_register(&serial3_device);
-#endif
-#if defined(CONFIG_SYS_PSC4)
-       serial_register(&serial4_device);
-#endif
-#if defined(CONFIG_SYS_PSC6)
-       serial_register(&serial6_device);
-#endif
-#endif
-       serial_assign (default_serial_console ()->name);
+       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();
+       mpc8220_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();
+       ns9750_serial_initialize();
+       oc_serial_initialize();
+       s3c4510b_serial_initialize();
+       s3c64xx_serial_initialize();
+       sandbox_serial_initialize();
+       clps7111_serial_initialize();
+       imx_serial_initialize();
+       ixp_serial_initialize();
+       ks8695_serial_initialize();
+       lh7a40x_serial_initialize();
+       lpc2292_serial_initialize();
+       max3100_serial_initialize();
+       mxc_serial_initialize();
+
+       serial_assign(default_serial_console()->name);
 }
 
-void serial_stdio_init (void)
+void serial_stdio_init(void)
 {
        struct stdio_dev dev;
        struct serial_device *s = serial_devices;
 
        while (s) {
-               memset (&dev, 0, sizeof (dev));
+               memset(&dev, 0, sizeof(dev));
 
-               strcpy (dev.name, s->name);
+               strcpy(dev.name, s->name);
                dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
 
-               dev.start = s->init;
-               dev.stop = s->uninit;
+               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);
+               stdio_register(&dev);
 
                s = s->next;
        }
 }
 
-int serial_assign (char *name)
+int serial_assign(const char *name)
 {
        struct serial_device *s;
 
        for (s = serial_devices; s; s = s->next) {
-               if (strcmp (s->name, name) == 0) {
+               if (strcmp(s->name, name) == 0) {
                        serial_current = s;
                        return 0;
                }
@@ -212,80 +196,143 @@ int serial_assign (char *name)
        return 1;
 }
 
-void serial_reinit_all (void)
+void serial_reinit_all(void)
 {
        struct serial_device *s;
 
-       for (s = serial_devices; s; s = s->next) {
-               s->init ();
-       }
+       for (s = serial_devices; s; s = s->next)
+               s->start();
 }
 
-int serial_init (void)
+static struct serial_device *get_current(void)
 {
-       if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
-               struct serial_device *dev = default_serial_console ();
+       struct serial_device *dev;
 
-               return dev->init ();
-       }
-
-       return serial_current->init ();
+       if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
+               dev = default_serial_console();
+
+               /* We must have a console device */
+               if (!dev)
+                       panic("Cannot find console");
+       } else
+               dev = serial_current;
+       return dev;
 }
 
-void serial_setbrg (void)
+int serial_init(void)
 {
-       if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
-               struct serial_device *dev = default_serial_console ();
-
-               dev->setbrg ();
-               return;
-       }
-
-       serial_current->setbrg ();
+       return get_current()->start();
 }
 
-int serial_getc (void)
+void serial_setbrg(void)
 {
-       if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
-               struct serial_device *dev = default_serial_console ();
-
-               return dev->getc ();
-       }
+       get_current()->setbrg();
+}
 
-       return serial_current->getc ();
+int serial_getc(void)
+{
+       return get_current()->getc();
 }
 
-int serial_tstc (void)
+int serial_tstc(void)
 {
-       if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
-               struct serial_device *dev = default_serial_console ();
+       return get_current()->tstc();
+}
 
-               return dev->tstc ();
-       }
+void serial_putc(const char c)
+{
+       get_current()->putc(c);
+}
 
-       return serial_current->tstc ();
+void serial_puts(const char *s)
+{
+       get_current()->puts(s);
 }
 
-void serial_putc (const char c)
+#if CONFIG_POST & CONFIG_SYS_POST_UART
+static const int bauds[] = CONFIG_SYS_BAUDRATE_TABLE;
+
+/* Mark weak until post/cpu/.../uart.c migrate over */
+__weak
+int uart_post_test(int flags)
 {
-       if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
-               struct serial_device *dev = default_serial_console ();
+       unsigned char c;
+       int ret, saved_baud, b;
+       struct serial_device *saved_dev, *s;
+       bd_t *bd = gd->bd;
 
-               dev->putc (c);
-               return;
-       }
+       /* Save current serial state */
+       ret = 0;
+       saved_dev = serial_current;
+       saved_baud = bd->bi_baudrate;
 
-       serial_current->putc (c);
-}
+       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;
+                               }
+                       }
+               }
 
-void serial_puts (const char *s)
-{
-       if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
-               struct serial_device *dev = default_serial_console ();
+               /* Disable loop back */
+               s->loop(0);
 
-               dev->puts (s);
-               return;
+               /* XXX: There is no serial_stop() !? */
+               if (s->stop)
+                       s->stop();
        }
 
-       serial_current->puts (s);
+ done:
+       /* Restore previous serial state */
+       serial_current = saved_dev;
+       bd->bi_baudrate = saved_baud;
+       serial_reinit_all();
+       serial_setbrg();
+
+       return ret;
 }
+#endif