diff options
Diffstat (limited to 'target/linux/easygate-2.6/files/arch/mips/bcm963xx/ser_init.c')
| -rw-r--r-- | target/linux/easygate-2.6/files/arch/mips/bcm963xx/ser_init.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/target/linux/easygate-2.6/files/arch/mips/bcm963xx/ser_init.c b/target/linux/easygate-2.6/files/arch/mips/bcm963xx/ser_init.c deleted file mode 100644 index bb745aec6e..0000000000 --- a/target/linux/easygate-2.6/files/arch/mips/bcm963xx/ser_init.c +++ /dev/null @@ -1,181 +0,0 @@ -/* -<:copyright-gpl - Copyright 2004 Broadcom Corp. All Rights Reserved. - - This program is free software; you can distribute it and/or modify it - under the terms of the GNU General Public License (Version 2) as - published by the Free Software Foundation. - - This program is distributed in the hope 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. -:> -*/ -/* - * Broadcom bcm63xx serial port initialization, also prepare for printk - * by registering with console_init - * - */ - -#include <linux/autoconf.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/console.h> -#include <linux/sched.h> - -#include <asm/addrspace.h> -#include <asm/irq.h> -#include <asm/reboot.h> -#include <asm/gdb-stub.h> -#include <asm/mc146818rtc.h> - -#include <bcm_map_part.h> -#include <6348_map_part.h> -#include <board.h> - -#define SER63XX_DEFAULT_BAUD 115200 -#define BD_BCM63XX_TIMER_CLOCK_INPUT (FPERIPH) -#define stUart ((volatile Uart * const) UART_BASE) - -// Transmit interrupts -#define TXINT (TXFIFOEMT | TXUNDERR | TXOVFERR) -// Receive interrupts -#define RXINT (RXFIFONE | RXOVFERR) - -/* -------------------------------------------------------------------------- - Name: serial_init - Purpose: Initalize the UART --------------------------------------------------------------------------- */ -void __init serial_init(void) -{ - u32 tmpVal = SER63XX_DEFAULT_BAUD; - ULONG clockFreqHz; - -#if defined(CONFIG_BCM96345) - // Make sure clock is ticking - PERF->blkEnables |= UART_CLK_EN; -#endif - - /* Dissable channel's receiver and transmitter. */ - stUart->control &= ~(BRGEN|TXEN|RXEN); - - /*--------------------------------------------------------------------*/ - /* Write the table value to the clock select register. */ - /* DPullen - this is the equation to use: */ - /* value = clockFreqHz / baud / 32-1; */ - /* (snmod) Actually you should also take into account any necessary */ - /* rounding. Divide by 16, look at lsb, if 0, divide by 2 */ - /* and subtract 1. If 1, just divide by 2 */ - /*--------------------------------------------------------------------*/ - clockFreqHz = BD_BCM63XX_TIMER_CLOCK_INPUT; - tmpVal = (clockFreqHz / tmpVal) / 16; - if( tmpVal & 0x01 ) - tmpVal /= 2; //Rounding up, so sub is already accounted for - else - tmpVal = (tmpVal / 2) - 1; // Rounding down so we must sub 1 - stUart->baudword = tmpVal; - - /* Finally, re-enable the transmitter and receiver. */ - stUart->control |= (BRGEN|TXEN|RXEN); - - stUart->config = (BITS8SYM | ONESTOP); - // Set the FIFO interrupt depth ... stUart->fifocfg = 0xAA; - stUart->fifoctl = RSTTXFIFOS | RSTRXFIFOS; - stUart->intMask = 0; - stUart->intMask = RXINT | TXINT; -} - - -/* prom_putc() - * Output a character to the UART - */ -void prom_putc(char c) -{ - /* Wait for Tx uffer to empty */ - while (! (READ16(stUart->intStatus) & TXFIFOEMT)); - /* Send character */ - stUart->Data = c; -} - -/* prom_puts() - * Write a string to the UART - */ -void prom_puts(const char *s) -{ - while (*s) { - if (*s == '\n') { - prom_putc('\r'); - } - prom_putc(*s++); - } -} - - -/* prom_getc_nowait() - * Returns a character from the UART - * Returns -1 if no characters available or corrupted - */ -int prom_getc_nowait(void) -{ - uint16 uStatus; - int cData = -1; - - uStatus = READ16(stUart->intStatus); - - if (uStatus & RXFIFONE) { /* Do we have a character? */ - cData = READ16(stUart->Data) & 0xff; /* Read character */ - if (uStatus & (RXFRAMERR | RXPARERR)) { /* If we got an error, throw it away */ - cData = -1; - } - } - - return cData; -} - -/* prom_getc() - * Returns a charcter from the serial port - * Will block until it receives a valid character -*/ -char prom_getc(void) -{ - int cData = -1; - - /* Loop until we get a valid character */ - while(cData == -1) { - cData = prom_getc_nowait(); - } - return (char) cData; -} - -/* prom_testc() - * Returns 0 if no characters available - */ -int prom_testc(void) -{ - uint16 uStatus; - - uStatus = READ16(stUart->intStatus); - - return (uStatus & RXFIFONE); -} - -#if defined (CONFIG_REMOTE_DEBUG) -/* Prevent other code from writing to the serial port */ -void _putc(char c) { } -void _puts(const char *ptr) { } -#else -/* Low level outputs call prom routines */ -void _putc(char c) { - prom_putc(c); -} -void _puts(const char *ptr) { - prom_puts(ptr); -} -#endif |