diff options
Diffstat (limited to 'cpu/ppc4xx/serial.c')
| -rw-r--r-- | cpu/ppc4xx/serial.c | 240 |
1 files changed, 212 insertions, 28 deletions
diff --git a/cpu/ppc4xx/serial.c b/cpu/ppc4xx/serial.c index 41402cc..4abd3fc 100644 --- a/cpu/ppc4xx/serial.c +++ b/cpu/ppc4xx/serial.c @@ -41,13 +41,20 @@ * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M */ /*------------------------------------------------------------------------------- */ - +/* + * Travis Sawyer 15 September 2004 + * Added CONFIG_SERIAL_MULTI support + */ #include <common.h> #include <commproc.h> #include <asm/processor.h> #include <watchdog.h> #include "vecnum.h" +#ifdef CONFIG_SERIAL_MULTI +#include <serial.h> +#endif + #ifdef CONFIG_SERIAL_SOFTWARE_FIFO #include <malloc.h> #endif @@ -147,7 +154,6 @@ #define asyncXOFFchar 0x13 #define asyncXONchar 0x11 - /* * Minimal serial functions needed to use one of the SMC ports * as serial console interface. @@ -177,7 +183,6 @@ int serial_init (void) return (0); } - void serial_setbrg (void) { DECLARE_GLOBAL_DATA_PTR; @@ -190,7 +195,6 @@ void serial_setbrg (void) out8 (SPU_BASE + spu_BRateDivh, ((br_reg & 0xff00) >> 8)); /* ... */ } - void serial_putc (const char c) { if (c == '\n') @@ -208,7 +212,6 @@ void serial_putc (const char c) } } - void serial_puts (const char *s) { while (*s) { @@ -216,7 +219,6 @@ void serial_puts (const char *s) } } - int serial_getc () { unsigned char status = 0; @@ -240,7 +242,6 @@ int serial_getc () return (0x000000ff & (int) in8 (asyncRxBufferport1)); } - int serial_tstc () { unsigned char status; @@ -264,7 +265,6 @@ int serial_tstc () #endif /* CONFIG_IOP480 */ - /*****************************************************************************/ #if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) || defined(CONFIG_405EP) @@ -350,7 +350,6 @@ int serial_tstc () /*#define asyncTxBufferport1 ACTING_UART0_BASE+0x00 */ /*#define asyncRxBufferport1 ACTING_UART0_BASE+0x00 */ - #ifdef CONFIG_SERIAL_SOFTWARE_FIFO /*-----------------------------------------------------------------------------+ | Fifo @@ -364,7 +363,6 @@ typedef struct { volatile static serial_buffer_t buf_info; #endif - #if defined(CONFIG_440) && !defined(CFG_EXT_SERIAL_CLOCK) static void serial_divs (int baudrate, unsigned long *pudiv, unsigned short *pbdiv ) @@ -411,14 +409,17 @@ static void serial_divs (int baudrate, unsigned long *pudiv, } #endif /* defined(CONFIG_440) && !defined(CFG_EXT_SERIAL_CLK */ - /* * Minimal serial functions needed to use one of the SMC ports * as serial console interface. */ #if defined(CONFIG_440) -int serial_init (void) +#if defined(CONFIG_SERIAL_MULTI) +int serial_init_dev (unsigned long dev_base) +#else +int serial_init(void) +#endif { DECLARE_GLOBAL_DATA_PTR; @@ -431,8 +432,18 @@ int serial_init (void) #endif #if defined(CONFIG_440_GX) +#if defined(CONFIG_SERIAL_MULTI) + if (UART0_BASE == dev_base) { + mfsdr(UART0_SDR,reg); + reg &= ~CR0_MASK; + } else { + mfsdr(UART1_SDR,reg); + reg &= ~CR0_MASK; + } +#else mfsdr(UART0_SDR,reg); reg &= ~CR0_MASK; +#endif #else reg = mfdcr(cntrl0) & ~CR0_MASK; #endif /* CONFIG_440_GX */ @@ -451,11 +462,32 @@ int serial_init (void) #if defined(CONFIG_440_GX) reg |= udiv << CR0_UDIV_POS; /* set the UART divisor */ +#if defined(CONFIG_SERIAL_MULTI) + if (UART0_BASE == dev_base) { + mtsdr (UART0_SDR,reg); + } else { + mtsdr (UART1_SDR,reg); + } +#else mtsdr (UART0_SDR,reg); +#endif #else reg |= (udiv - 1) << CR0_UDIV_POS; /* set the UART divisor */ mtdcr (cntrl0, reg); #endif + +#if defined(CONFIG_SERIAL_MULTI) + out8 (dev_base + UART_LCR, 0x80); /* set DLAB bit */ + out8 (dev_base + UART_DLL, bdiv); /* set baudrate divisor */ + out8 (dev_base + UART_DLM, bdiv >> 8);/* set baudrate divisor */ + out8 (dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */ + out8 (dev_base + UART_FCR, 0x00); /* disable FIFO */ + out8 (dev_base + UART_MCR, 0x00); /* no modem control DTR RTS */ + val = in8 (dev_base + UART_LSR); /* clear line status */ + val = in8 (dev_base + UART_RBR); /* read receive buffer */ + out8 (dev_base + UART_SCR, 0x00); /* set scratchpad */ + out8 (dev_base + UART_IER, 0x00); /* set interrupt enable reg */ +#else out8 (ACTING_UART0_BASE + UART_LCR, 0x80); /* set DLAB bit */ out8 (ACTING_UART0_BASE + UART_DLL, bdiv); /* set baudrate divisor */ out8 (ACTING_UART0_BASE + UART_DLM, bdiv >> 8);/* set baudrate divisor */ @@ -466,13 +498,17 @@ int serial_init (void) val = in8 (ACTING_UART0_BASE + UART_RBR); /* read receive buffer */ out8 (ACTING_UART0_BASE + UART_SCR, 0x00); /* set scratchpad */ out8 (ACTING_UART0_BASE + UART_IER, 0x00); /* set interrupt enable reg */ - +#endif return (0); } #else /* !defined(CONFIG_440) */ +#if defined(CONFIG_SERIAL_MULTI) +int serial_init_dev (unsigned long dev_base) +#else int serial_init (void) +#endif { DECLARE_GLOBAL_DATA_PTR; @@ -517,6 +553,18 @@ int serial_init (void) tmp = gd->baudrate * udiv * 16; bdiv = (clk + tmp / 2) / tmp; +#if defined(CONFIG_SERIAL_MULTI) + out8 (dev_base + UART_LCR, 0x80); /* set DLAB bit */ + out8 (dev_base + UART_DLL, bdiv); /* set baudrate divisor */ + out8 (dev_base + UART_DLM, bdiv >> 8);/* set baudrate divisor */ + out8 (dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */ + out8 (dev_base + UART_FCR, 0x00); /* disable FIFO */ + out8 (dev_base + UART_MCR, 0x00); /* no modem control DTR RTS */ + val = in8 (dev_base + UART_LSR); /* clear line status */ + val = in8 (dev_base + UART_RBR); /* read receive buffer */ + out8 (dev_base + UART_SCR, 0x00); /* set scratchpad */ + out8 (dev_base + UART_IER, 0x00); /* set interrupt enable reg */ +#else out8 (ACTING_UART0_BASE + UART_LCR, 0x80); /* set DLAB bit */ out8 (ACTING_UART0_BASE + UART_DLL, bdiv); /* set baudrate divisor */ out8 (ACTING_UART0_BASE + UART_DLM, bdiv >> 8);/* set baudrate divisor */ @@ -527,13 +575,17 @@ int serial_init (void) val = in8 (ACTING_UART0_BASE + UART_RBR); /* read receive buffer */ out8 (ACTING_UART0_BASE + UART_SCR, 0x00); /* set scratchpad */ out8 (ACTING_UART0_BASE + UART_IER, 0x00); /* set interrupt enable reg */ - +#endif return (0); } #endif /* if defined(CONFIG_440) */ +#if defined(CONFIG_SERIAL_MULTI) +void serial_setbrg_dev (unsigned long dev_base) +#else void serial_setbrg (void) +#endif { DECLARE_GLOBAL_DATA_PTR; @@ -556,39 +608,71 @@ void serial_setbrg (void) tmp = gd->baudrate * udiv * 16; bdiv = (clk + tmp / 2) / tmp; +#if defined(CONFIG_SERIAL_MULTI) + out8 (dev_base + UART_LCR, 0x80); /* set DLAB bit */ + out8 (dev_base + UART_DLL, bdiv); /* set baudrate divisor */ + out8 (dev_base + UART_DLM, bdiv >> 8);/* set baudrate divisor */ + out8 (dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */ +#else out8 (ACTING_UART0_BASE + UART_LCR, 0x80); /* set DLAB bit */ out8 (ACTING_UART0_BASE + UART_DLL, bdiv); /* set baudrate divisor */ out8 (ACTING_UART0_BASE + UART_DLM, bdiv >> 8);/* set baudrate divisor */ out8 (ACTING_UART0_BASE + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */ +#endif } - +#if defined(CONFIG_SERIAL_MULTI) +void serial_putc_dev (unsigned long dev_base, const char c) +#else void serial_putc (const char c) +#endif { int i; if (c == '\n') +#if defined(CONFIG_SERIAL_MULTI) + serial_putc_dev (dev_base, '\r'); +#else serial_putc ('\r'); +#endif /* check THRE bit, wait for transmiter available */ for (i = 1; i < 3500; i++) { +#if defined(CONFIG_SERIAL_MULTI) + if ((in8 (dev_base + UART_LSR) & 0x20) == 0x20) +#else if ((in8 (ACTING_UART0_BASE + UART_LSR) & 0x20) == 0x20) +#endif break; udelay (100); } +#if defined(CONFIG_SERIAL_MULTI) + out8 (dev_base + UART_THR, c); /* put character out */ +#else out8 (ACTING_UART0_BASE + UART_THR, c); /* put character out */ +#endif } - +#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 () +#if defined(CONFIG_SERIAL_MULTI) +int serial_getc_dev (unsigned long dev_base) +#else +int serial_getc (void) +#endif { unsigned char status = 0; @@ -596,7 +680,11 @@ int serial_getc () #if defined(CONFIG_HW_WATCHDOG) WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ #endif /* CONFIG_HW_WATCHDOG */ +#if defined(CONFIG_SERIAL_MULTI) + status = in8 (dev_base + UART_LSR); +#else status = in8 (ACTING_UART0_BASE + UART_LSR); +#endif if ((status & asyncLSRDataReady1) != 0x0) { break; } @@ -604,22 +692,37 @@ int serial_getc () asyncLSROverrunError1 | asyncLSRParityError1 | asyncLSRBreakInterrupt1 )) != 0) { +#if defined(CONFIG_SERIAL_MULTI) + out8 (dev_base + UART_LSR, +#else out8 (ACTING_UART0_BASE + UART_LSR, +#endif asyncLSRFramingError1 | asyncLSROverrunError1 | asyncLSRParityError1 | asyncLSRBreakInterrupt1); } } +#if defined(CONFIG_SERIAL_MULTI) + return (0x000000ff & (int) in8 (dev_base)); +#else return (0x000000ff & (int) in8 (ACTING_UART0_BASE)); +#endif } - -int serial_tstc () +#if defined(CONFIG_SERIAL_MULTI) +int serial_tstc_dev (unsigned long dev_base) +#else +int serial_tstc (void) +#endif { unsigned char status; +#if defined(CONFIG_SERIAL_MULTI) + status = in8 (dev_base + UART_LSR); +#else status = in8 (ACTING_UART0_BASE + UART_LSR); +#endif if ((status & asyncLSRDataReady1) != 0x0) { return (1); } @@ -627,7 +730,11 @@ int serial_tstc () asyncLSROverrunError1 | asyncLSRParityError1 | asyncLSRBreakInterrupt1 )) != 0) { +#if defined(CONFIG_SERIAL_MULTI) + out8 (dev_base + UART_LSR, +#else out8 (ACTING_UART0_BASE + UART_LSR, +#endif asyncLSRFramingError1 | asyncLSROverrunError1 | asyncLSRParityError1 | @@ -636,7 +743,6 @@ int serial_tstc () return 0; } - #ifdef CONFIG_SERIAL_SOFTWARE_FIFO void serial_isr (void *arg) @@ -651,8 +757,8 @@ void serial_isr (void *arg) } else { space = rx_get - rx_put; } - while (serial_tstc ()) { - c = serial_getc (); + while (serial_tstc_dev (ACTING_UART0_BASE)) { + c = serial_getc_dev (ACTING_UART0_BASE); if (space) { buf_info.rx_buffer[rx_put++] = c; space--; @@ -752,7 +858,6 @@ int serial_buffered_tstc (void) #endif /* CONFIG_SERIAL_SOFTWARE_FIFO */ - #if (CONFIG_COMMANDS & CFG_CMD_KGDB) /* AS HARNOIS : according to CONFIG_KGDB_SER_INDEX kgdb uses serial port @@ -788,7 +893,6 @@ void kgdb_serial_init (void) out8 (ACTING_UART1_BASE + UART_IER, 0x00); /* set interrupt enable reg */ } - void putDebugChar (const char c) { if (c == '\n') @@ -800,7 +904,6 @@ void putDebugChar (const char c) while ((in8 (ACTING_UART1_BASE + UART_LSR) & 0x20) != 0x20); } - void putDebugStr (const char *s) { while (*s) { @@ -808,7 +911,6 @@ void putDebugStr (const char *s) } } - int getDebugChar (void) { unsigned char status = 0; @@ -832,7 +934,6 @@ int getDebugChar (void) return (0x000000ff & (int) in8 (ACTING_UART1_BASE)); } - void kgdb_interruptible (int yes) { return; @@ -867,4 +968,87 @@ void kgdb_interruptible (int yes) #endif /* (CONFIG_KGDB_SER_INDEX & 2) */ #endif /* CFG_CMD_KGDB */ + +#if defined(CONFIG_SERIAL_MULTI) +int serial0_init(void) +{ + return (serial_init_dev(UART0_BASE)); +} + +int serial1_init(void) +{ + return (serial_init_dev(UART1_BASE)); +} +void serial0_setbrg (void) +{ + serial_setbrg_dev(UART0_BASE); +} +void serial1_setbrg (void) +{ + serial_setbrg_dev(UART1_BASE); +} + +void serial0_putc(const char c) +{ + serial_putc_dev(UART0_BASE,c); +} + +void serial1_putc(const char c) +{ + serial_putc_dev(UART1_BASE, c); +} +void serial0_puts(const char *s) +{ + serial_puts_dev(UART0_BASE, s); +} + +void serial1_puts(const char *s) +{ + serial_puts_dev(UART1_BASE, s); +} + +int serial0_getc(void) +{ + return(serial_getc_dev(UART0_BASE)); +} + +int serial1_getc(void) +{ + return(serial_getc_dev(UART1_BASE)); +} +int serial0_tstc(void) +{ + return (serial_tstc_dev(UART0_BASE)); +} + +int serial1_tstc(void) +{ + return (serial_tstc_dev(UART1_BASE)); +} + +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_405GP || CONFIG_405CR */ |