From c9d4f46b5d639a45747d5eaabd31d35856cb918f Mon Sep 17 00:00:00 2001 From: Scott McNutt Date: Fri, 19 Mar 2010 19:03:28 -0400 Subject: nios2: Move serial drivers to individual files in drivers/serial The standard Altera UART & JTAG UART as well as the OpenCores YANU driver are now in individual files in drivers/serial rather than a single file uner cpu/nios2. Signed-off-by: Scott McNutt diff --git a/cpu/nios2/Makefile b/cpu/nios2/Makefile index 75f30b4..3dfaa83 100644 --- a/cpu/nios2/Makefile +++ b/cpu/nios2/Makefile @@ -27,7 +27,7 @@ LIB = $(obj)lib$(CPU).a START = start.o SOBJS = exceptions.o -COBJS = cpu.o interrupts.o serial.o sysid.o traps.o epcs.o +COBJS = cpu.o interrupts.o sysid.o traps.o epcs.o SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) diff --git a/cpu/nios2/serial.c b/cpu/nios2/serial.c deleted file mode 100644 index 6c835af..0000000 --- a/cpu/nios2/serial.c +++ /dev/null @@ -1,309 +0,0 @@ -/* - * (C) Copyright 2004, Psyent Corporation - * Scott McNutt - * - * YANU Support: - * Copyright 2010, Renato Andreola - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - - -#include -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -/*------------------------------------------------------------------ - * JTAG acts as the serial port - *-----------------------------------------------------------------*/ -#if defined(CONFIG_CONSOLE_JTAG) - -static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE; - -void serial_setbrg( void ){ return; } -int serial_init( void ) { return(0);} - -void serial_putc (char c) -{ - unsigned val; - - while (NIOS_JTAG_WSPACE ( readl (&jtag->control)) == 0) - WATCHDOG_RESET (); - writel (&jtag->data, (unsigned char)c); -} - -void serial_puts (const char *s) -{ - while (*s != 0) - serial_putc (*s++); -} - -int serial_tstc (void) -{ - return ( readl (&jtag->control) & NIOS_JTAG_RRDY); -} - -int serial_getc (void) -{ - int c; - unsigned val; - - while (1) { - WATCHDOG_RESET (); - val = readl (&jtag->data); - if (val & NIOS_JTAG_RVALID) - break; - } - c = val & 0x0ff; - return (c); -} - -#elif defined(CONFIG_CONSOLE_YANU) -/*-----------------------------------------------------------------*/ -/* YANU Imagos serial port */ -/*-----------------------------------------------------------------*/ - -static yanu_uart_t *uart = (yanu_uart_t *)CONFIG_SYS_NIOS_CONSOLE; - -#if defined(CONFIG_SYS_NIOS_FIXEDBAUD) - -/* Everything's already setup for fixed-baud PTF assignment*/ - -void serial_setbrg (void) -{ - int n, k; - const unsigned max_uns = 0xFFFFFFFF; - unsigned best_n, best_m, baud; - - /* compute best N and M couple */ - best_n = YANU_MAX_PRESCALER_N; - for (n = YANU_MAX_PRESCALER_N; n >= 0; n--) { - if ((unsigned)CONFIG_SYS_CLK_FREQ / (1 << (n + 4)) >= - (unsigned)CONFIG_BAUDRATE) { - best_n = n; - break; - } - } - for (k = 0;; k++) { - if ((unsigned)CONFIG_BAUDRATE <= (max_uns >> (15+n-k))) - break; - } - best_m = - ((unsigned)CONFIG_BAUDRATE * (1 << (15 + n - k))) / - ((unsigned)CONFIG_SYS_CLK_FREQ >> k); - - baud = best_m + best_n * YANU_BAUDE; - writel(&uart->baud, baud); - - return; -} - -#else - -void serial_setbrg (void) -{ - int n, k; - const unsigned max_uns = 0xFFFFFFFF; - unsigned best_n, best_m, baud; - - /* compute best N and M couple */ - best_n = YANU_MAX_PRESCALER_N; - for (n = YANU_MAX_PRESCALER_N; n >= 0; n--) { - if ((unsigned)CONFIG_SYS_CLK_FREQ / (1 << (n + 4)) >= - gd->baudrate) { - best_n = n; - break; - } - } - for (k = 0;; k++) { - if (gd->baudrate <= (max_uns >> (15+n-k))) - break; - } - best_m = - (gd->baudrate * (1 << (15 + n - k))) / - ((unsigned)CONFIG_SYS_CLK_FREQ >> k); - - baud = best_m + best_n * YANU_BAUDE; - writel(&uart->baud, baud); - - return; -} - - -#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */ - -int serial_init (void) -{ - unsigned action,control; - - /* status register cleanup */ - action = YANU_ACTION_RRRDY | - YANU_ACTION_RTRDY | - YANU_ACTION_ROE | - YANU_ACTION_RBRK | - YANU_ACTION_RFE | - YANU_ACTION_RPE | - YANU_ACTION_RFE | YANU_ACTION_RFIFO_CLEAR | YANU_ACTION_TFIFO_CLEAR; - - writel(&uart->action, action); - - /* control register cleanup */ - /* no interrupts enabled */ - /* one stop bit */ - /* hardware flow control disabled */ - /* 8 bits */ - control = (0x7 << YANU_CONTROL_BITS_POS); - /* enven parity just to be clean */ - control |= YANU_CONTROL_PAREVEN; - /* we set threshold for fifo */ - control |= YANU_CONTROL_RDYDLY * YANU_RXFIFO_DLY; - control |= YANU_CONTROL_TXTHR * YANU_TXFIFO_THR; - - writel(&uart->control, control); - - /* to set baud rate */ - serial_setbrg(); - - return (0); -} - - -/*----------------------------------------------------------------------- - * YANU CONSOLE - *---------------------------------------------------------------------*/ -void serial_putc (char c) -{ - int tx_chars; - unsigned status; - - if (c == '\n') - serial_putc ('\r'); - - while (1) { - status = readl(&uart->status); - tx_chars = (status>>YANU_TFIFO_CHARS_POS) - & ((1<data, (unsigned char)c); -} - -void serial_puts (const char *s) -{ - while (*s != 0) { - serial_putc (*s++); - } -} - - -int serial_tstc(void) -{ - unsigned status ; - - status = readl(&uart->status); - return (((status >> YANU_RFIFO_CHARS_POS) & - ((1 << YANU_RFIFO_CHARS_N) - 1)) > 0); -} - -int serial_getc (void) -{ - while (serial_tstc() == 0) - WATCHDOG_RESET (); - - /* first we pull the char */ - writel(&uart->action, YANU_ACTION_RFIFO_PULL); - - return(readl(&uart->data) & YANU_DATA_CHAR_MASK); -} - -#else /*CONFIG_CONSOLE_YANU*/ - -/*------------------------------------------------------------------ - * UART the serial port - *-----------------------------------------------------------------*/ - -static nios_uart_t *uart = (nios_uart_t *) CONFIG_SYS_NIOS_CONSOLE; - -#if defined(CONFIG_SYS_NIOS_FIXEDBAUD) - -/* Everything's already setup for fixed-baud PTF - * assignment - */ -void serial_setbrg (void){ return; } -int serial_init (void) { return (0);} - -#else - -void serial_setbrg (void) -{ - unsigned div; - - div = (CONFIG_SYS_CLK_FREQ/gd->baudrate)-1; - writel (&uart->divisor,div); - return; -} - -int serial_init (void) -{ - serial_setbrg (); - return (0); -} - -#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */ - - -/*----------------------------------------------------------------------- - * UART CONSOLE - *---------------------------------------------------------------------*/ -void serial_putc (char c) -{ - if (c == '\n') - serial_putc ('\r'); - while ((readl (&uart->status) & NIOS_UART_TRDY) == 0) - WATCHDOG_RESET (); - writel (&uart->txdata,(unsigned char)c); -} - -void serial_puts (const char *s) -{ - while (*s != 0) { - serial_putc (*s++); - } -} - -int serial_tstc (void) -{ - return (readl (&uart->status) & NIOS_UART_RRDY); -} - -int serial_getc (void) -{ - while (serial_tstc () == 0) - WATCHDOG_RESET (); - return (readl (&uart->rxdata) & 0x00ff ); -} - -#endif /* CONFIG_JTAG_CONSOLE */ diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index 3c77a7c..d2b4820 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -25,11 +25,14 @@ include $(TOPDIR)/config.mk LIB := $(obj)libserial.a +COBJS-$(CONFIG_ALTERA_UART) += altera_uart.o +COBJS-$(CONFIG_ALTERA_JTAG_UART) += altera_jtag_uart.o COBJS-$(CONFIG_ARM_DCC) += arm_dcc.o COBJS-$(CONFIG_AT91RM9200_USART) += at91rm9200_usart.o COBJS-$(CONFIG_ATMEL_USART) += atmel_usart.o COBJS-$(CONFIG_MCFUART) += mcfuart.o COBJS-$(CONFIG_NS9750_UART) += ns9750_serial.o +COBJS-$(CONFIG_OPENCORES_YANU) += opencores_yanu.o COBJS-$(CONFIG_SYS_NS16550) += ns16550.o COBJS-$(CONFIG_DRIVER_S3C4510_UART) += s3c4510b_uart.o COBJS-$(CONFIG_S3C64XX) += s3c64xx.o diff --git a/drivers/serial/altera_jtag_uart.c b/drivers/serial/altera_jtag_uart.c new file mode 100644 index 0000000..9eccaa0 --- /dev/null +++ b/drivers/serial/altera_jtag_uart.c @@ -0,0 +1,70 @@ +/* + * (C) Copyright 2004, Psyent Corporation + * Scott McNutt + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/*------------------------------------------------------------------ + * JTAG acts as the serial port + *-----------------------------------------------------------------*/ +static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE; + +void serial_setbrg( void ){ return; } +int serial_init( void ) { return(0);} + +void serial_putc (char c) +{ + while (NIOS_JTAG_WSPACE ( readl (&jtag->control)) == 0) + WATCHDOG_RESET (); + writel (&jtag->data, (unsigned char)c); +} + +void serial_puts (const char *s) +{ + while (*s != 0) + serial_putc (*s++); +} + +int serial_tstc (void) +{ + return ( readl (&jtag->control) & NIOS_JTAG_RRDY); +} + +int serial_getc (void) +{ + int c; + unsigned val; + + while (1) { + WATCHDOG_RESET (); + val = readl (&jtag->data); + if (val & NIOS_JTAG_RVALID) + break; + } + c = val & 0x0ff; + return (c); +} diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c new file mode 100644 index 0000000..995e374 --- /dev/null +++ b/drivers/serial/altera_uart.c @@ -0,0 +1,94 @@ +/* + * (C) Copyright 2004, Psyent Corporation + * Scott McNutt + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/*------------------------------------------------------------------ + * UART the serial port + *-----------------------------------------------------------------*/ + +static nios_uart_t *uart = (nios_uart_t *) CONFIG_SYS_NIOS_CONSOLE; + +#if defined(CONFIG_SYS_NIOS_FIXEDBAUD) + +/* Everything's already setup for fixed-baud PTF + * assignment + */ +void serial_setbrg (void){ return; } +int serial_init (void) { return (0);} + +#else + +void serial_setbrg (void) +{ + unsigned div; + + div = (CONFIG_SYS_CLK_FREQ/gd->baudrate)-1; + writel (&uart->divisor,div); + return; +} + +int serial_init (void) +{ + serial_setbrg (); + return (0); +} + +#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */ + +/*----------------------------------------------------------------------- + * UART CONSOLE + *---------------------------------------------------------------------*/ +void serial_putc (char c) +{ + if (c == '\n') + serial_putc ('\r'); + while ((readl (&uart->status) & NIOS_UART_TRDY) == 0) + WATCHDOG_RESET (); + writel (&uart->txdata,(unsigned char)c); +} + +void serial_puts (const char *s) +{ + while (*s != 0) { + serial_putc (*s++); + } +} + +int serial_tstc (void) +{ + return (readl (&uart->status) & NIOS_UART_RRDY); +} + +int serial_getc (void) +{ + while (serial_tstc () == 0) + WATCHDOG_RESET (); + return (readl (&uart->rxdata) & 0x00ff ); +} diff --git a/drivers/serial/opencores_yanu.c b/drivers/serial/opencores_yanu.c new file mode 100644 index 0000000..dacda53 --- /dev/null +++ b/drivers/serial/opencores_yanu.c @@ -0,0 +1,188 @@ +/* + * Copyright 2010, Renato Andreola + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/*-----------------------------------------------------------------*/ +/* YANU Imagos serial port */ +/*-----------------------------------------------------------------*/ + +static yanu_uart_t *uart = (yanu_uart_t *)CONFIG_SYS_NIOS_CONSOLE; + +#if defined(CONFIG_SYS_NIOS_FIXEDBAUD) + +/* Everything's already setup for fixed-baud PTF assignment*/ + +void serial_setbrg (void) +{ + int n, k; + const unsigned max_uns = 0xFFFFFFFF; + unsigned best_n, best_m, baud; + + /* compute best N and M couple */ + best_n = YANU_MAX_PRESCALER_N; + for (n = YANU_MAX_PRESCALER_N; n >= 0; n--) { + if ((unsigned)CONFIG_SYS_CLK_FREQ / (1 << (n + 4)) >= + (unsigned)CONFIG_BAUDRATE) { + best_n = n; + break; + } + } + for (k = 0;; k++) { + if ((unsigned)CONFIG_BAUDRATE <= (max_uns >> (15+n-k))) + break; + } + best_m = + ((unsigned)CONFIG_BAUDRATE * (1 << (15 + n - k))) / + ((unsigned)CONFIG_SYS_CLK_FREQ >> k); + + baud = best_m + best_n * YANU_BAUDE; + writel(&uart->baud, baud); + + return; +} + +#else + +void serial_setbrg (void) +{ + int n, k; + const unsigned max_uns = 0xFFFFFFFF; + unsigned best_n, best_m, baud; + + /* compute best N and M couple */ + best_n = YANU_MAX_PRESCALER_N; + for (n = YANU_MAX_PRESCALER_N; n >= 0; n--) { + if ((unsigned)CONFIG_SYS_CLK_FREQ / (1 << (n + 4)) >= + gd->baudrate) { + best_n = n; + break; + } + } + for (k = 0;; k++) { + if (gd->baudrate <= (max_uns >> (15+n-k))) + break; + } + best_m = + (gd->baudrate * (1 << (15 + n - k))) / + ((unsigned)CONFIG_SYS_CLK_FREQ >> k); + + baud = best_m + best_n * YANU_BAUDE; + writel(&uart->baud, baud); + + return; +} + + +#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */ + +int serial_init (void) +{ + unsigned action,control; + + /* status register cleanup */ + action = YANU_ACTION_RRRDY | + YANU_ACTION_RTRDY | + YANU_ACTION_ROE | + YANU_ACTION_RBRK | + YANU_ACTION_RFE | + YANU_ACTION_RPE | + YANU_ACTION_RFE | YANU_ACTION_RFIFO_CLEAR | YANU_ACTION_TFIFO_CLEAR; + + writel(&uart->action, action); + + /* control register cleanup */ + /* no interrupts enabled */ + /* one stop bit */ + /* hardware flow control disabled */ + /* 8 bits */ + control = (0x7 << YANU_CONTROL_BITS_POS); + /* enven parity just to be clean */ + control |= YANU_CONTROL_PAREVEN; + /* we set threshold for fifo */ + control |= YANU_CONTROL_RDYDLY * YANU_RXFIFO_DLY; + control |= YANU_CONTROL_TXTHR * YANU_TXFIFO_THR; + + writel(&uart->control, control); + + /* to set baud rate */ + serial_setbrg(); + + return (0); +} + + +/*----------------------------------------------------------------------- + * YANU CONSOLE + *---------------------------------------------------------------------*/ +void serial_putc (char c) +{ + int tx_chars; + unsigned status; + + if (c == '\n') + serial_putc ('\r'); + + while (1) { + status = readl(&uart->status); + tx_chars = (status>>YANU_TFIFO_CHARS_POS) + & ((1<data, (unsigned char)c); +} + +void serial_puts (const char *s) +{ + while (*s != 0) { + serial_putc (*s++); + } +} + + +int serial_tstc(void) +{ + unsigned status ; + + status = readl(&uart->status); + return (((status >> YANU_RFIFO_CHARS_POS) & + ((1 << YANU_RFIFO_CHARS_N) - 1)) > 0); +} + +int serial_getc (void) +{ + while (serial_tstc() == 0) + WATCHDOG_RESET (); + + /* first we pull the char */ + writel(&uart->action, YANU_ACTION_RFIFO_PULL); + + return(readl(&uart->data) & YANU_DATA_CHAR_MASK); +} diff --git a/include/configs/EP1C20.h b/include/configs/EP1C20.h index 61d8e20..dc82e54 100644 --- a/include/configs/EP1C20.h +++ b/include/configs/EP1C20.h @@ -94,7 +94,8 @@ /*------------------------------------------------------------------------ * CONSOLE *----------------------------------------------------------------------*/ -#if defined(CONFIG_CONSOLE_JTAG) +#define CONFIG_ALTERA_UART 1 /* Use altera uart */ +#if defined(CONFIG_ALTERA_JTAG_UART) #define CONFIG_SYS_NIOS_CONSOLE 0x021208b0 /* JTAG UART base addr */ #else #define CONFIG_SYS_NIOS_CONSOLE 0x02120840 /* UART base addr */ diff --git a/include/configs/EP1S10.h b/include/configs/EP1S10.h index 41e64e6..498f26d 100644 --- a/include/configs/EP1S10.h +++ b/include/configs/EP1S10.h @@ -92,7 +92,8 @@ /*------------------------------------------------------------------------ * CONSOLE *----------------------------------------------------------------------*/ -#if defined(CONFIG_CONSOLE_JTAG) +#define CONFIG_ALTERA_UART 1 /* Use altera uart */ +#if defined(CONFIG_ALTERA_JTAG_UART) #define CONFIG_SYS_NIOS_CONSOLE 0x021208b0 /* JTAG UART base addr */ #else #define CONFIG_SYS_NIOS_CONSOLE 0x02120840 /* UART base addr */ diff --git a/include/configs/EP1S40.h b/include/configs/EP1S40.h index 5b332e4..4ad65d8 100644 --- a/include/configs/EP1S40.h +++ b/include/configs/EP1S40.h @@ -92,7 +92,8 @@ /*------------------------------------------------------------------------ * CONSOLE *----------------------------------------------------------------------*/ -#if defined(CONFIG_CONSOLE_JTAG) +#define CONFIG_ALTERA_UART 1 /* Use altera uart */ +#if defined(CONFIG_ALTERA_JTAG_UART) #define CONFIG_SYS_NIOS_CONSOLE 0x021208b0 /* JTAG UART base addr */ #else #define CONFIG_SYS_NIOS_CONSOLE 0x02120840 /* UART base addr */ diff --git a/include/configs/PCI5441.h b/include/configs/PCI5441.h index 831a60d..d06b7f8 100644 --- a/include/configs/PCI5441.h +++ b/include/configs/PCI5441.h @@ -92,7 +92,8 @@ /*------------------------------------------------------------------------ * CONSOLE *----------------------------------------------------------------------*/ -#if defined(CONFIG_CONSOLE_JTAG) +#define CONFIG_ALTERA_UART 1 /* Use altera uart */ +#if defined(CONFIG_ALTERA_JTAG_UART) #define CONFIG_SYS_NIOS_CONSOLE 0x00920820 /* JTAG UART base addr */ #else #define CONFIG_SYS_NIOS_CONSOLE 0x009208a0 /* UART base addr */ diff --git a/include/configs/PK1C20.h b/include/configs/PK1C20.h index cf6f7a9..165dde0 100644 --- a/include/configs/PK1C20.h +++ b/include/configs/PK1C20.h @@ -94,7 +94,8 @@ /*------------------------------------------------------------------------ * CONSOLE *----------------------------------------------------------------------*/ -#if defined(CONFIG_CONSOLE_JTAG) +#define CONFIG_ALTERA_UART 1 /* Use altera uart */ +#if defined(CONFIG_ALTERA_JTAG_UART) #define CONFIG_SYS_NIOS_CONSOLE 0x021208b0 /* JTAG UART base addr */ #else #define CONFIG_SYS_NIOS_CONSOLE 0x02120840 /* UART base addr */ -- cgit v0.10.2