diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/csb337/console/dbgu.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/csb337/console/dbgu.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/c/src/lib/libbsp/arm/csb337/console/dbgu.c b/c/src/lib/libbsp/arm/csb337/console/dbgu.c deleted file mode 100644 index 1a16762e32..0000000000 --- a/c/src/lib/libbsp/arm/csb337/console/dbgu.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Console driver for AT91RM9200 DBGU port - * - * This driver uses the shared console driver in - * ...../libbsp/shared/console.c - * - * Copyright (c) 2003 by Cogent Computer Systems - * Written by Mike Kelly <mike@cogcomp.com> - * and Jay Monkman <jtm@lopingdog.com> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ -#include <bsp.h> -#include <rtems/libio.h> -#include <termios.h> - -#include <at91rm9200.h> -#include <at91rm9200_dbgu.h> -#include <at91rm9200_pmc.h> -#include <rtems/bspIo.h> -#include <libchip/serial.h> -#include <libchip/sersupp.h> - -volatile int dbg_dly; - -/* static function prototypes */ -static int dbgu_first_open(int major, int minor, void *arg); -static int dbgu_last_close(int major, int minor, void *arg); -static int dbgu_read(int minor); -static ssize_t dbgu_write(int minor, const char *buf, size_t len); -static void dbgu_init(int minor); -static void dbgu_write_polled(int minor, char c); -static int dbgu_set_attributes(int minor, const struct termios *t); - -/* Pointers to functions for handling the UART. */ -const console_fns dbgu_fns = -{ - libchip_serial_default_probe, - dbgu_first_open, - dbgu_last_close, - dbgu_read, - dbgu_write, - dbgu_init, - dbgu_write_polled, /* not used in this driver */ - dbgu_set_attributes, - FALSE /* TRUE if interrupt driven, FALSE if not. */ -}; -/*********************************************************************/ -/* Functions called via callbacks (i.e. the ones in uart_fns */ -/*********************************************************************/ - -/* - * This is called the first time each device is opened. Since - * the driver is polled, we don't have to do anything. If the driver - * were interrupt driven, we'd enable interrupts here. - */ -static int dbgu_first_open(int major, int minor, void *arg) -{ - return 0; -} - - -/* - * This is called the last time each device is closed. Since - * the driver is polled, we don't have to do anything. If the driver - * were interrupt driven, we'd disable interrupts here. - */ -static int dbgu_last_close(int major, int minor, void *arg) -{ - return 0; -} - - -/* - * Read one character from UART. - * - * return -1 if there's no data, otherwise return - * the character in lowest 8 bits of returned int. - */ -static int dbgu_read(int minor) -{ - char c; - console_tbl *console_entry; - at91rm9200_dbgu_regs_t *dbgu; - - console_entry = BSP_get_uart_from_minor(minor); - - if (console_entry == NULL) { - return -1; - } - - dbgu = (at91rm9200_dbgu_regs_t *)console_entry->ulCtrlPort1; - - if (!(dbgu->sr & DBGU_INT_RXRDY)) { - return -1; - } - - c = dbgu->rhr & 0xff; - - return c; -} - - -/* - * Write buffer to UART - * - * return 1 on success, -1 on error - */ -static ssize_t dbgu_write(int minor, const char *buf, size_t len) -{ - int i, x; - char c; - console_tbl *console_entry; - at91rm9200_dbgu_regs_t *dbgu; - - console_entry = BSP_get_uart_from_minor(minor); - - if (console_entry == NULL) { - return -1; - } - - dbgu = (at91rm9200_dbgu_regs_t *)console_entry->ulCtrlPort1; - - for (i = 0; i < len; i++) { - /* Wait for fifo to have room */ - while(1) { - if (dbgu->sr & DBGU_INT_TXRDY) { - break; - } - } - - c = (char) buf[i]; - dbgu->thr = c; - - /* the TXRDY flag does not seem to update right away (is this true?) */ - /* so we wait a bit before continuing */ - for (x = 0; x < 100; x++) { - dbg_dly++; /* using a global so this doesn't get optimized out */ - } - } - - return 1; -} - - -/* Set up the UART. */ -static void dbgu_init(int minor) -{ - console_tbl *console_entry; - at91rm9200_dbgu_regs_t *dbgu; - - console_entry = BSP_get_uart_from_minor(minor); - - if (console_entry == NULL) { - return; - } - - dbgu = (at91rm9200_dbgu_regs_t *)console_entry->ulCtrlPort1; - - /* Clear error bits, and reset */ - dbgu->cr = (DBGU_CR_RSTSTA | DBGU_CR_RSTTX | DBGU_CR_RSTRX); - - /* Clear pending interrupts */ - dbgu->idr = DBGU_INT_ALL; - dbgu->imr = 0; - - /* Set port to no parity, no loopback */ - dbgu->mr = DBGU_MR_PAR_NONE | DBGU_MR_CHMODE_NORM; - - /* Set the baud rate */ - dbgu->brgr = (at91rm9200_get_mck() / 16) / BSP_get_baud(); - - /* Enable the DBGU */ - dbgu->cr = (DBGU_CR_TXEN | DBGU_CR_RXEN); -} - -/* This is used for getchark support */ -static void dbgu_write_polled(int minor, char c) -{ - dbgu_write(minor, &c, 1); -} - -/* This is for setting baud rate, bits, etc. */ -static int dbgu_set_attributes(int minor, const struct termios *t) -{ - return 0; -} - -/***********************************************************************/ -/* - * The following functions are not used by TERMIOS, but other RTEMS - * functions use them instead. - */ -/***********************************************************************/ -/* - * Read from UART. This is used in the exit code, and can't - * rely on interrupts. - */ -static int dbgu_poll_read(int minor) -{ - return dbgu_read(minor); -} - - -/* - * Write a character to the console. This is used by printk() and - * maybe other low level functions. It should not use interrupts or any - * RTEMS system calls. It needs to be very simple - */ -static void _BSP_put_char( char c ) { - dbgu_write_polled(0, c); -} - -BSP_output_char_function_type BSP_output_char = _BSP_put_char; - -static int _BSP_poll_char(void) -{ - return dbgu_poll_read(0); -} - -BSP_polling_getchar_function_type BSP_poll_char = _BSP_poll_char; |