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-rw-r--r--CHANGELOG11
-rw-r--r--common/serial.c4
-rw-r--r--cpu/mpc5xxx/serial.c181
-rw-r--r--doc/README.serial_multi26
-rw-r--r--include/serial.h2
5 files changed, 211 insertions, 13 deletions
diff --git a/CHANGELOG b/CHANGELOG
index af8df174d9..dd73e0bef3 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,17 @@
Changes since U-Boot 1.1.4:
======================================================================
+* Add support for CONFIG_SERIAL_MULTI on MPC5xxx
+ Patch by Martin Krause, 8 Jun 2006
+
+ This patch supports two serial consoles on boards with
+ a MPC5xxx CPU. The console can be switched at runtime
+ by setting stdin, stdout and stderr to the desired serial
+ interface (serial0 or serial1). The PSCs to be used as
+ console port are definded by CONFIG_PSC_CONSOLE
+ and CONFIG_PSC_CONSOLE2.
+ See README.serial_multi for details.
+
* Bugfix in I2C initialisation on S3C2400.
If the bus is blocked because of a previously interrupted
transfer, up to eleven clocks are generated on the I2CSCL
diff --git a/common/serial.c b/common/serial.c
index 2acbd08b16..7b29951708 100644
--- a/common/serial.c
+++ b/common/serial.c
@@ -41,7 +41,7 @@ struct serial_device *default_serial_console (void)
|| defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
return &serial_scc_device;
#elif defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
- || defined(CONFIG_405EP)
+ || defined(CONFIG_405EP) || defined(CONFIG_MPC5xxx)
return &serial0_device;
#else
#error No default console
@@ -75,7 +75,7 @@ void serial_initialize (void)
#endif
#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
- || defined(CONFIG_405EP)
+ || defined(CONFIG_405EP) || defined(CONFIG_MPC5xxx)
serial_register(&serial0_device);
serial_register(&serial1_device);
#endif
diff --git a/cpu/mpc5xxx/serial.c b/cpu/mpc5xxx/serial.c
index cacb9f0573..6cb523d3c7 100644
--- a/cpu/mpc5xxx/serial.c
+++ b/cpu/mpc5xxx/serial.c
@@ -23,6 +23,9 @@
* Hacked for MPC8260 by Murray.Jensen@cmst.csiro.au, 19-Oct-00, with
* changes based on the file arch/ppc/mbxboot/m8260_tty.c from the
* Linux/PPC sources (m8260_tty.c had no copyright info in it).
+ *
+ * Martin Krause, 8 Jun 2006
+ * Added CONFIG_SERIAL_MULTI support
*/
/*
@@ -33,6 +36,10 @@
#include <common.h>
#include <mpc5xxx.h>
+#if defined (CONFIG_SERIAL_MULTI)
+#include <serial.h>
+#endif
+
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_PSC_CONSOLE)
@@ -55,9 +62,41 @@ DECLARE_GLOBAL_DATA_PTR;
#error CONFIG_PSC_CONSOLE must be in 1 ... 6
#endif
+#if defined(CONFIG_SERIAL_MULTI) && !defined(CONFIG_PSC_CONSOLE2)
+#error you must define CONFIG_PSC_CONSOLE2 if CONFIG_SERIAL_MULTI is set
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+#if CONFIG_PSC_CONSOLE2 == 1
+#define PSC_BASE2 MPC5XXX_PSC1
+#elif CONFIG_PSC_CONSOLE2 == 2
+#define PSC_BASE2 MPC5XXX_PSC2
+#elif CONFIG_PSC_CONSOLE2 == 3
+#define PSC_BASE2 MPC5XXX_PSC3
+#elif defined(CONFIG_MGT5100)
+#error CONFIG_PSC_CONSOLE2 must be in 1, 2 or 3
+#elif CONFIG_PSC_CONSOLE2 == 4
+#define PSC_BASE2 MPC5XXX_PSC4
+#elif CONFIG_PSC_CONSOLE2 == 5
+#define PSC_BASE2 MPC5XXX_PSC5
+#elif CONFIG_PSC_CONSOLE2 == 6
+#define PSC_BASE2 MPC5XXX_PSC6
+#else
+#error CONFIG_PSC_CONSOLE2 must be in 1 ... 6
+#endif
+#endif /* CONFIG_SERIAL_MULTI */
+
+#if defined(CONFIG_SERIAL_MULTI)
+int serial_init_dev (unsigned long dev_base)
+#else
int serial_init (void)
+#endif
{
+#if defined(CONFIG_SERIAL_MULTI)
+ volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
unsigned long baseclk;
int div;
@@ -100,13 +139,24 @@ int serial_init (void)
return (0);
}
-void
-serial_putc(const char c)
+#if defined(CONFIG_SERIAL_MULTI)
+void serial_putc_dev (unsigned long dev_base, const char c)
+#else
+void serial_putc(const char c)
+#endif
{
+#if defined(CONFIG_SERIAL_MULTI)
+ volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
if (c == '\n')
+#if defined(CONFIG_SERIAL_MULTI)
+ serial_putc_dev (dev_base, '\r');
+#else
serial_putc('\r');
+#endif
/* Wait for last character to go. */
while (!(psc->psc_status & PSC_SR_TXEMP))
@@ -115,18 +165,32 @@ serial_putc(const char c)
psc->psc_buffer_8 = c;
}
-void
-serial_puts (const char *s)
+#if defined(CONFIG_SERIAL_MULTI)
+void serial_puts_dev (unsigned long dev_base, const char *s)
+#else
+void serial_puts (const char *s)
+#endif
{
while (*s) {
+#if defined(CONFIG_SERIAL_MULTI)
+ serial_putc_dev (dev_base, *s++);
+#else
serial_putc (*s++);
+#endif
}
}
-int
-serial_getc(void)
+#if defined(CONFIG_SERIAL_MULTI)
+int serial_getc_dev (unsigned long dev_base)
+#else
+int serial_getc(void)
+#endif
{
+#if defined(CONFIG_SERIAL_MULTI)
+ volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
/* Wait for a character to arrive. */
while (!(psc->psc_status & PSC_SR_RXRDY))
@@ -135,18 +199,32 @@ serial_getc(void)
return psc->psc_buffer_8;
}
-int
-serial_tstc(void)
+#if defined(CONFIG_SERIAL_MULTI)
+int serial_tstc_dev (unsigned long dev_base)
+#else
+int serial_tstc(void)
+#endif
{
+#if defined(CONFIG_SERIAL_MULTI)
+ volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
return (psc->psc_status & PSC_SR_RXRDY);
}
-void
-serial_setbrg(void)
+#if defined(CONFIG_SERIAL_MULTI)
+void serial_setbrg_dev (unsigned long dev_base)
+#else
+void serial_setbrg(void)
+#endif
{
+#if defined(CONFIG_SERIAL_MULTI)
+ volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
+#else
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#endif
unsigned long baseclk, div;
#if defined(CONFIG_MGT5100)
@@ -160,4 +238,87 @@ serial_setbrg(void)
psc->ctur = (div >> 8) & 0xFF;
psc->ctlr = div & 0xff;
}
+
+#if defined(CONFIG_SERIAL_MULTI)
+int serial0_init(void)
+{
+ return (serial_init_dev(PSC_BASE));
+}
+
+int serial1_init(void)
+{
+ return (serial_init_dev(PSC_BASE2));
+}
+void serial0_setbrg (void)
+{
+ serial_setbrg_dev(PSC_BASE);
+}
+void serial1_setbrg (void)
+{
+ serial_setbrg_dev(PSC_BASE2);
+}
+
+void serial0_putc(const char c)
+{
+ serial_putc_dev(PSC_BASE,c);
+}
+
+void serial1_putc(const char c)
+{
+ serial_putc_dev(PSC_BASE2, c);
+}
+void serial0_puts(const char *s)
+{
+ serial_puts_dev(PSC_BASE, s);
+}
+
+void serial1_puts(const char *s)
+{
+ serial_puts_dev(PSC_BASE2, s);
+}
+
+int serial0_getc(void)
+{
+ return(serial_getc_dev(PSC_BASE));
+}
+
+int serial1_getc(void)
+{
+ return(serial_getc_dev(PSC_BASE2));
+}
+int serial0_tstc(void)
+{
+ return (serial_tstc_dev(PSC_BASE));
+}
+
+int serial1_tstc(void)
+{
+ return (serial_tstc_dev(PSC_BASE2));
+}
+
+struct serial_device serial0_device =
+{
+ "serial0",
+ "UART0",
+ serial0_init,
+ serial0_setbrg,
+ serial0_getc,
+ serial0_tstc,
+ serial0_putc,
+ serial0_puts,
+};
+
+struct serial_device serial1_device =
+{
+ "serial1",
+ "UART1",
+ serial1_init,
+ serial1_setbrg,
+ serial1_getc,
+ serial1_tstc,
+ serial1_putc,
+ serial1_puts,
+};
+#endif /* CONFIG_SERIAL_MULTI */
+
#endif /* CONFIG_PSC_CONSOLE */
diff --git a/doc/README.serial_multi b/doc/README.serial_multi
index a8d48fc4d9..40f78159f5 100644
--- a/doc/README.serial_multi
+++ b/doc/README.serial_multi
@@ -52,3 +52,29 @@ PPC4XX Specific
setenv stdout serial0
setenv stderr serial0
setenv stdin serial0
+
+MPC5xxx Specific
+================
+
+Up to two PSCs can be used as console.
+
+Support for hardware handshake has not been implemented yet.
+
+*) The first (default) console port is defined by:
+ #define CONFIG_PSC_CONSOLE <PSC number>
+
+*) The second (alternative) console port is defined by:
+ #define CONFIG_PSC_CONSOLE2 <PSC number>
+
+*) Commands to switch to the second console:
+ setenv stdout serial1
+ setenv stderr serial1
+ setenv stdin serial1
+
+*) Commands to switch to the first console:
+ setenv stdout serial0
+ setenv stderr serial0
+ setenv stdin serial0
+
+*) If a file descriptor is set to "serial" then the
+ current serial device will be used.
diff --git a/include/serial.h b/include/serial.h
index c8abb72e1f..8c7b1c26c1 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -23,7 +23,7 @@ extern struct serial_device serial_scc_device;
extern struct serial_device * default_serial_console (void);
#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
- || defined(CONFIG_405EP)
+ || defined(CONFIG_405EP) || defined(CONFIG_MPC5xxx)
extern struct serial_device serial0_device;
extern struct serial_device serial1_device;
#endif