You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
1.9 KiB
83 lines
1.9 KiB
/*
|
|
* Generic 16550 kgdb support intended to be useful on a variety
|
|
* of platforms. To enable this support, it is necessary to set
|
|
* the CONFIG_GEN550 option. Any virtual mapping of the serial
|
|
* port(s) to be used can be accomplished by setting
|
|
* ppc_md.early_serial_map to a platform-specific mapping function.
|
|
*
|
|
* Adapted from ppc4xx_kgdb.c.
|
|
*
|
|
* Author: Matt Porter <mporter@kernel.crashing.org>
|
|
*
|
|
* 2002-2004 (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/kernel.h>
|
|
|
|
#include <asm/machdep.h>
|
|
|
|
extern unsigned long serial_init(int, void *);
|
|
extern unsigned long serial_getc(unsigned long);
|
|
extern unsigned long serial_putc(unsigned long, unsigned char);
|
|
|
|
#if defined(CONFIG_KGDB_TTYS0)
|
|
#define KGDB_PORT 0
|
|
#elif defined(CONFIG_KGDB_TTYS1)
|
|
#define KGDB_PORT 1
|
|
#elif defined(CONFIG_KGDB_TTYS2)
|
|
#define KGDB_PORT 2
|
|
#elif defined(CONFIG_KGDB_TTYS3)
|
|
#define KGDB_PORT 3
|
|
#else
|
|
#error "invalid kgdb_tty port"
|
|
#endif
|
|
|
|
static volatile unsigned int kgdb_debugport;
|
|
|
|
void putDebugChar(unsigned char c)
|
|
{
|
|
if (kgdb_debugport == 0)
|
|
kgdb_debugport = serial_init(KGDB_PORT, NULL);
|
|
|
|
serial_putc(kgdb_debugport, c);
|
|
}
|
|
|
|
int getDebugChar(void)
|
|
{
|
|
if (kgdb_debugport == 0)
|
|
kgdb_debugport = serial_init(KGDB_PORT, NULL);
|
|
|
|
return(serial_getc(kgdb_debugport));
|
|
}
|
|
|
|
void kgdb_interruptible(int enable)
|
|
{
|
|
return;
|
|
}
|
|
|
|
void putDebugString(char* str)
|
|
{
|
|
while (*str != '\0') {
|
|
putDebugChar(*str);
|
|
str++;
|
|
}
|
|
putDebugChar('\r');
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Note: gen550_init() must be called already on the port we are going
|
|
* to use.
|
|
*/
|
|
void
|
|
gen550_kgdb_map_scc(void)
|
|
{
|
|
printk(KERN_DEBUG "kgdb init\n");
|
|
if (ppc_md.early_serial_map)
|
|
ppc_md.early_serial_map();
|
|
kgdb_debugport = serial_init(KGDB_PORT, NULL);
|
|
}
|
|
|