diff options
Diffstat (limited to 'arch/ppc/syslib/gen550_dbg.c')
| -rw-r--r-- | arch/ppc/syslib/gen550_dbg.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/arch/ppc/syslib/gen550_dbg.c b/arch/ppc/syslib/gen550_dbg.c deleted file mode 100644 index 9293f5c5909..00000000000 --- a/arch/ppc/syslib/gen550_dbg.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * A library of polled 16550 serial routines. These are intended to - * be used to support progress messages, xmon, kgdb, etc. on a - * variety of platforms. - * - * Adapted from lots of code ripped from the arch/ppc/boot/ polled - * 16550 support. - * - * Author: Matt Porter <mporter@mvista.com> - * - * 2002-2003 (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - */ - -#include <linux/types.h> -#include <linux/serial.h> -#include <linux/tty.h> /* For linux/serial_core.h */ -#include <linux/serial_core.h> -#include <linux/serialP.h> -#include <linux/serial_reg.h> -#include <asm/machdep.h> -#include <asm/serial.h> -#include <asm/io.h> - -#define SERIAL_BAUD 9600 - -/* SERIAL_PORT_DFNS is defined in <asm/serial.h> */ -#ifndef SERIAL_PORT_DFNS -#define SERIAL_PORT_DFNS -#endif - -static struct serial_state rs_table[RS_TABLE_SIZE] = { - SERIAL_PORT_DFNS /* defined in <asm/serial.h> */ -}; - -static void (*serial_outb)(unsigned long, unsigned char); -static unsigned long (*serial_inb)(unsigned long); - -static int shift; - -unsigned long direct_inb(unsigned long addr) -{ - return readb((void __iomem *)addr); -} - -void direct_outb(unsigned long addr, unsigned char val) -{ - writeb(val, (void __iomem *)addr); -} - -unsigned long io_inb(unsigned long port) -{ - return inb(port); -} - -void io_outb(unsigned long port, unsigned char val) -{ - outb(val, port); -} - -unsigned long serial_init(int chan, void *ignored) -{ - unsigned long com_port; - unsigned char lcr, dlm; - - /* We need to find out which type io we're expecting. If it's - * 'SERIAL_IO_PORT', we get an offset from the isa_io_base. - * If it's 'SERIAL_IO_MEM', we can the exact location. -- Tom */ - switch (rs_table[chan].io_type) { - case SERIAL_IO_PORT: - com_port = rs_table[chan].port; - serial_outb = io_outb; - serial_inb = io_inb; - break; - case SERIAL_IO_MEM: - com_port = (unsigned long)rs_table[chan].iomem_base; - serial_outb = direct_outb; - serial_inb = direct_inb; - break; - default: - /* We can't deal with it. */ - return -1; - } - - /* How far apart the registers are. */ - shift = rs_table[chan].iomem_reg_shift; - - /* save the LCR */ - lcr = serial_inb(com_port + (UART_LCR << shift)); - - /* Access baud rate */ - serial_outb(com_port + (UART_LCR << shift), UART_LCR_DLAB); - dlm = serial_inb(com_port + (UART_DLM << shift)); - - /* - * Test if serial port is unconfigured - * We assume that no-one uses less than 110 baud or - * less than 7 bits per character these days. - * -- paulus. - */ - if ((dlm <= 4) && (lcr & 2)) { - /* port is configured, put the old LCR back */ - serial_outb(com_port + (UART_LCR << shift), lcr); - } - else { - /* Input clock. */ - serial_outb(com_port + (UART_DLL << shift), - (rs_table[chan].baud_base / SERIAL_BAUD) & 0xFF); - serial_outb(com_port + (UART_DLM << shift), - (rs_table[chan].baud_base / SERIAL_BAUD) >> 8); - /* 8 data, 1 stop, no parity */ - serial_outb(com_port + (UART_LCR << shift), 0x03); - /* RTS/DTR */ - serial_outb(com_port + (UART_MCR << shift), 0x03); - - /* Clear & enable FIFOs */ - serial_outb(com_port + (UART_FCR << shift), 0x07); - } - - return (com_port); -} - -void -serial_putc(unsigned long com_port, unsigned char c) -{ - while ((serial_inb(com_port + (UART_LSR << shift)) & UART_LSR_THRE) == 0) - ; - serial_outb(com_port, c); -} - -unsigned char -serial_getc(unsigned long com_port) -{ - while ((serial_inb(com_port + (UART_LSR << shift)) & UART_LSR_DR) == 0) - ; - return serial_inb(com_port); -} - -int -serial_tstc(unsigned long com_port) -{ - return ((serial_inb(com_port + (UART_LSR << shift)) & UART_LSR_DR) != 0); -} - -void -serial_close(unsigned long com_port) -{ -} - -void -gen550_init(int i, struct uart_port *serial_req) -{ - rs_table[i].io_type = serial_req->iotype; - rs_table[i].port = serial_req->iobase; - rs_table[i].iomem_base = serial_req->membase; - rs_table[i].iomem_reg_shift = serial_req->regshift; - rs_table[i].baud_base = serial_req->uartclk ? serial_req->uartclk / 16 : BASE_BAUD; -} - -#ifdef CONFIG_SERIAL_TEXT_DEBUG -void -gen550_progress(char *s, unsigned short hex) -{ - volatile unsigned int progress_debugport; - volatile char c; - - progress_debugport = serial_init(0, NULL); - - serial_putc(progress_debugport, '\r'); - - while ((c = *s++) != 0) - serial_putc(progress_debugport, c); - - serial_putc(progress_debugport, '\n'); - serial_putc(progress_debugport, '\r'); -} -#endif /* CONFIG_SERIAL_TEXT_DEBUG */ |