diff options
| -rw-r--r-- | CHANGELOG | 11 | ||||
| -rw-r--r-- | common/serial.c | 4 | ||||
| -rw-r--r-- | cpu/mpc5xxx/serial.c | 181 | ||||
| -rw-r--r-- | doc/README.serial_multi | 26 | ||||
| -rw-r--r-- | include/serial.h | 2 |
5 files changed, 211 insertions, 13 deletions
@@ -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 2acbd08b1..7b2995170 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 cacb9f057..6cb523d3c 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 a8d48fc4d..40f78159f 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 c8abb72e1..8c7b1c26c 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 |