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/* $NetBSD: machdep.c,v 1.1.1.1 1995/07/25 23:12:22 chuck Exp $ */
#include <sys/param.h>
#include <sys/types.h>
#include <sys/exec.h>
#include <sys/reboot.h>
#include "config.h"
/*
* get_boothowto: boothowto for kernel
*/
static int get_boothowto(cmd_flags)
char *cmd_flags;
{
int result = 0;
if (cmd_flags == NULL) return(0);
while (*cmd_flags) {
switch (*cmd_flags) {
case 's': result |= RB_SINGLE; break;
case 'a': result |= RB_ASKNAME; break;
default: break;
}
cmd_flags++;
}
return(result);
}
/*
* cmd_parse: parse command line
* expected format: "b[oot] [kernel_name] [-flags]"
*/
char *cmd_parse(cmd_buf, howto)
char *cmd_buf;
int *howto;
{
char *cmd_kernel, *cmd_flags;
u_char *cp;
*howto = 0;
cp = cmd_buf+1; /* skip 'b' */
while (*cp && *cp != ' ') cp++; /* skip to end or space */
while (*cp == ' ') cp++; /* skip spaces */
if (*cp == '\0') return(NULL); /* no args */
if (*cp == '-') { /* only flags? */
*howto = get_boothowto(cp);
return(NULL);
}
cmd_kernel = cp; /* got kernel name */
while (*cp && *cp != ' ') cp++; /* skip to end or space */
if (*cp == ' ') *cp++ = 0; /* null terminate kernel */
while (*cp == ' ') cp++; /* skip spaces */
if (*cp == '\0') return(cmd_kernel); /* no flags */
if (*cp != '-') return(cmd_kernel); /* garbage flags */
cmd_flags = cp; /* save flags */
while (*cp && *cp != ' ') cp++; /* skip to end or space */
if (*cp == ' ') *cp++ = 0; /* null terminate flags */
*howto = get_boothowto(cmd_flags);
return(cmd_kernel);
}
/*
* machdep_common_ether: get ethernet address
*/
void machdep_common_ether(ether)
unsigned char *ether;
{
caddr_t addr;
int *ea = (int *) ETHER_ADDR;
int e = *ea;
if (( e & 0x2fffff00 ) == 0x2fffff00)
panic("ERROR: ethernet address not set!\r\n");
ether[0] = 0x08;
ether[1] = 0x00;
ether[2] = 0x3e;
e = e >> 8;
ether[5] = e & 0xff;
e = e >> 8;
ether[4] = e & 0xff;
e = e >> 8;
ether[3] = e;
}
/*
* console i/o
*/
/*
* hardware
*/
struct zs_hw {
volatile u_char ctl;
volatile u_char data;
};
struct zs_hw *zs = (struct zs_hw *)CONS_ZS_ADDR;
/*
* putchar: put char to console
*/
void putchar(char c)
{
if (c == '\n') putchar('\r');
zs->ctl = 0;
while ((zs->ctl & 0x04) == 0) {
zs->ctl = 0;
}
zs->ctl = 8;
zs->ctl = c;
}
/*
* getchar: get char from console
*/
int
getchar()
{
int i;
while (1) {
zs->ctl = 0;
if ((zs->ctl & 0x1) != 0) break;
for (i = 100 ; i > 0 ; i--)
;
}
zs->ctl = 8;
return(zs->ctl);
}
/*
* peekchar
*/
peekchar()
{
zs->ctl = 0;
return(zs->ctl & 0x1);
}
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