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remove "kludge" com console. 

Simplify timebase initialization.
This commit is contained in:
matt 2003-03-17 23:28:09 +00:00
parent 0fb35cae8c
commit a935178cad
1 changed files with 5 additions and 113 deletions
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118
sys/arch/evbppc/ev64260/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.4 2003/03/16 07:07:19 matt Exp $ */
/* $NetBSD: machdep.c,v 1.5 2003/03/17 23:28:09 matt Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -118,7 +118,8 @@ void initppc(u_int, u_int, u_int, void *); /* Called from locore */
void strayintr(int);
int lcsplx(int);
void gt_bus_space_init(void);
extern void return_to_dink(int);
void return_to_dink(int);
void calc_delayconst(void);
struct powerpc_bus_space gt_pci0_mem_bs_tag = {
_BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
@ -190,26 +191,13 @@ initppc(startkernel, endkernel, args, btinfo)
}
avail_end = physmemr[0].start + physmemr[0].size; /* XXX temporary */
/*
* Get CPU clock
*/
{ /* XXX AKB */
extern u_long ticks_per_sec, ns_per_tick;
extern void calc_delayconst(void);
ticks_per_sec = 100000000; /* 100 MHz */
/* ticks_per_sec = 66000000; * 66 MHz */
ticks_per_sec /= 4; /* 4 cycles per DEC tick */
cpu_timebase = ticks_per_sec;
ns_per_tick = 1000000000 / ticks_per_sec;
calc_delayconst();
}
oea_batinit(0xf0000000, BAT_BL_256M);
oea_init((void (*)(void))ext_intr);
gt_bus_space_init();
calc_delayconst(); /* Set CPU clock */
consinit();
#if (NISA > 0)
@ -462,99 +450,3 @@ gt_bus_space_init(void)
"I/O space 0x10000-0x7fffff: error=%d\n", error);
#endif
}
#if 1
#define ISSET(t, f) ((t) & (f))
#define KCOM_BASE 0xfd000000 /* XXX COM1 */
#define KCOM_REGSIZE 0x00001000 /* XXX */
unsigned char *kcombase = (unsigned char *)KCOM_BASE;
void kcomcninit(struct consdev *);
int kcomcngetc(dev_t);
void kcomcnpollc(dev_t, int);
void kcomcnputc(dev_t, int);
static unsigned char kcom_reg_read(int);
static void kcom_reg_write(int, unsigned char);
/*
* The following functions are polled getc and putc routines,
* the core of the "kludge" in the Kludge Com driver :-)
*/
static inline unsigned char
kcom_reg_read(int off)
{
unsigned char rv;
__asm __volatile ("eieio; lbzx %0,%1,%2; eieio;"
: "=r"(rv) : "b"(off << 2), "r"(kcombase));
return rv;
}
static __inline void
kcom_reg_write(int off, unsigned char val)
{
__asm __volatile ("eieio; stbx %0,%1,%2; eieio;"
:: "r"(val), "b"(off << 2), "r"(kcombase));
}
void
kcomcninit(struct consdev *cd)
{
kcom_reg_write(com_ier, 0);
kcom_reg_write(com_mcr, MCR_RTS|MCR_DTR);
}
int
kcomcngetc(dev_t dev)
{
u_char stat, c;
/* block until a character becomes available */
while (!ISSET(stat = kcom_reg_read(com_lsr), LSR_RXRDY))
;
c = kcom_reg_read(com_data);
stat = kcom_reg_read(com_iir);
return (int)c;
}
void
kcomcnputc(dev_t dev, int c)
{
int timo;
/* wait for any pending transmission to finish */
timo = 150000;
while ((!ISSET(kcom_reg_read(com_lsr), LSR_TXRDY)) && --timo)
continue;
kcom_reg_write(com_data, c);
/* wait for this transmission to complete */
timo = 150000;
while ((!ISSET(kcom_reg_read(com_lsr), LSR_TXRDY)) && --timo)
continue;
}
void
kcomcnpollc(dev_t dev, int on)
{
}
struct consdev consdev_kcom = {
NULL,
kcomcninit,
kcomcngetc,
kcomcnputc,
kcomcnpollc,
NULL,
};
#if 1
struct consdev *cn_tab = &consdev_kcom;
#endif
#endif