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* Initialize the icu with a table driven method again.

This commit is contained in:
matthias 1997-04-01 16:32:47 +00:00
parent 88128328a9
commit 6231519c48
1 changed files with 27 additions and 13 deletions
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40
sys/arch/pc532/pc532/mainbus.c
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@ -64,22 +64,24 @@ mbattach(parent, self, aux)
void *aux;
{
int clk, net;
static u_char icu_table[] = {
/*
* The ICU is initialized by the Monitor as follows:
* CCTL=0x15 MCTL=0 LCSV=13 IPS=0 PDIR=0xfe PDAT=0xfe
*
* G0 is used SWAP RAM/ROM, G1-G6 for interrupts and
* G7 to select between the ncr or the aic SCSI controller.
*/
IPS, 0x7e, /* 0=i/o, 1=int_req */
PDIR, 0x7e, /* 1=in, 0=out */
PDAT, 0xfe, /* keep ROM at high mem */
0xff
};
printf("\n");
/*
* The ICU is initialized by the Monitor as follows:
* CCTL=0x15 MCTL=0 LCSV=13 IPS=0 PDIR=0xfe PDAT=0xfe
*/
icu_init(icu_table);
/*
* G0 is used SWAP RAM/ROM, G1-G6 for interrupts and
* G7 to select between the ncr or the aic SCSI controller.
*/
ICUB(IPS) = 0x7e; /* 0=i/o, 1=int_req */
ICUB(PDIR) = 0x7e; /* 1=in, 0=out */
ICUB(PDAT) = 0xfe; /* keep ROM at high mem */
/* Set up the ICU. */
/* Set up the interrupt system. */
intr_init();
/* Allocate softclock at IPL_NET as splnet() has to block softclock. */
@ -135,3 +137,15 @@ mbsearch(parent, cf, aux)
}
return (0);
}
void
icu_init(p)
u_char *p;
{
di();
while (*p != 0xff) {
ICUB(p[0]) = p[1];
p += 2;
}
ei();
}