Commit 67536bf2 authored by Anton Blanchard's avatar Anton Blanchard

ppc64: remove some old xmon code

parent 597ae2a9
......@@ -14,29 +14,13 @@
#include <asm/page.h>
#include <asm/prom.h>
#include <asm/processor.h>
/* Transition to udbg isn't quite done yet...but very close. */
#define USE_UDBG
#ifdef USE_UDBG
#include <asm/udbg.h>
#endif
#ifndef USE_UDBG
static volatile unsigned char *sccc, *sccd;
#endif
unsigned long TXRDY, RXRDY;
extern void xmon_printf(const char *fmt, ...);
static int xmon_expect(const char *str, unsigned int timeout);
#ifndef USE_UDBG
static int console = 0;
#endif
static int via_modem = 0;
/* static int xmon_use_sccb = 0; --Unused */
#define TB_SPEED 25000000
extern void *comport1;
static inline unsigned int readtb(void)
{
unsigned int ret;
......@@ -45,14 +29,8 @@ static inline unsigned int readtb(void)
return ret;
}
#ifndef USE_UDBG
void buf_access(void)
{
sccd[3] &= ~0x80; /* reset DLAB */
}
#endif
static void sysrq_handle_xmon(int key, struct pt_regs *pt_regs, struct tty_struct *tty)
static void sysrq_handle_xmon(int key, struct pt_regs *pt_regs,
struct tty_struct *tty)
{
xmon(pt_regs);
}
......@@ -68,50 +46,12 @@ xmon_map_scc(void)
{
/* This maybe isn't the best place to register sysrq 'x' */
__sysrq_put_key_op('x', &sysrq_xmon_op);
#ifndef USE_UDBG
/* should already be mapped by the kernel boot */
sccd = (volatile unsigned char *) (((unsigned long)comport1));
sccc = (volatile unsigned char *) (((unsigned long)comport1)+5);
TXRDY = 0x20;
RXRDY = 1;
#endif
}
static int scc_initialized = 0;
void xmon_init_scc(void);
extern void pmu_poll(void);
int
xmon_write(void *handle, void *ptr, int nb)
{
#ifdef USE_UDBG
return udbg_write(ptr, nb);
#else
char *p = ptr;
int i, c, ct;
if (!scc_initialized)
xmon_init_scc();
ct = 0;
for (i = 0; i < nb; ++i) {
while ((*sccc & TXRDY) == 0) {
}
c = p[i];
if (c == '\n' && !ct) {
c = '\r';
ct = 1;
--i;
} else {
if (console)
printk("%c", c);
ct = 0;
}
buf_access();
*sccd = c;
}
return i;
#endif
}
int xmon_wants_key;
......@@ -119,66 +59,13 @@ int xmon_wants_key;
int
xmon_read(void *handle, void *ptr, int nb)
{
#ifdef USE_UDBG
return udbg_read(ptr, nb);
#else
char *p = ptr;
int i, c;
if (!scc_initialized)
xmon_init_scc();
for (i = 0; i < nb; ++i) {
do {
while ((*sccc & RXRDY) == 0)
;
buf_access();
c = *sccd;
} while (c == 0x11 || c == 0x13);
*p++ = c;
}
return i;
#endif
}
int
xmon_read_poll(void)
{
#ifdef USE_UDBG
return udbg_getc_poll();
#else
if ((*sccc & RXRDY) == 0) {
return -1;
}
buf_access();
return *sccd;
#endif
}
void
xmon_init_scc()
{
#ifndef USE_UDBG
sccd[3] = 0x83; eieio(); /* LCR = 8N1 + DLAB */
sccd[0] = 12; eieio(); /* DLL = 9600 baud */
sccd[1] = 0; eieio();
sccd[2] = 0; eieio(); /* FCR = 0 */
sccd[3] = 3; eieio(); /* LCR = 8N1 */
sccd[1] = 0; eieio(); /* IER = 0 */
#endif
scc_initialized = 1;
if (via_modem) {
for (;;) {
xmon_write(0, "ATE1V1\r", 7);
if (xmon_expect("OK", 5)) {
xmon_write(0, "ATA\r", 4);
if (xmon_expect("CONNECT", 40))
break;
}
xmon_write(0, "+++", 3);
xmon_expect("OK", 3);
}
}
}
void *xmon_stdin;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment