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/* $Id: idprom.c,v 1.19 1996/04/25 06:08:41 davem Exp $
* idprom.c: Routines to load the idprom into kernel addresses and
* interpret the data contained within.
*
* Because they use the IDPROM's machine type field, some of the
* virtual address cache probings on the sun4c are done here.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/oplib.h>
#include <asm/idprom.h>
#include <asm/machines.h> /* Fun with Sun released architectures. */
#include <asm/system.h> /* For halt() macro */
struct idp_struct *idprom;
static struct idp_struct idprom_buff;
/* Here is the master table of Sun machines which use some implementation
* of the Sparc CPU and have a meaningful IDPROM machtype value that we
* know about. See asm-sparc/machines.h for empirical constants.
*/
struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
/* First, Sun4's */
{ "Sun 4/100 Series", (SM_SUN4 | SM_4_110) },
{ "Sun 4/200 Series", (SM_SUN4 | SM_4_260) },
{ "Sun 4/300 Series", (SM_SUN4 | SM_4_330) },
{ "Sun 4/400 Series", (SM_SUN4 | SM_4_470) },
/* Now, Sun4c's */
{ "Sun4c SparcStation 1", (SM_SUN4C | SM_4C_SS1) },
{ "Sun4c SparcStation IPC", (SM_SUN4C | SM_4C_IPC) },
{ "Sun4c SparcStation 1+", (SM_SUN4C | SM_4C_SS1PLUS) },
{ "Sun4c SparcStation SLC", (SM_SUN4C | SM_4C_SLC) },
{ "Sun4c SparcStation 2", (SM_SUN4C | SM_4C_SS2) },
{ "Sun4c SparcStation ELC", (SM_SUN4C | SM_4C_ELC) },
{ "Sun4c SparcStation IPX", (SM_SUN4C | SM_4C_IPX) },
/* Finally, early Sun4m's */
{ "Sun4m SparcSystem600", (SM_SUN4M | SM_4M_SS60) },
{ "Sun4m SparcStation10", (SM_SUN4M | SM_4M_SS50) },
{ "Sun4m SparcStation5", (SM_SUN4M | SM_4M_SS40) },
/* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
{ "Sun4M OBP based system", (SM_SUN4M_OBP | 0x0) } };
void
sparc_display_systype(unsigned char machtyp)
{
char system_name[128];
int i;
for(i = 0; i<NUM_SUN_MACHINES; i++) {
if(Sun_Machines[i].id_machtype == machtyp) {
if(machtyp!=(SM_SUN4M_OBP | 0x0)) {
printk("TYPE: %s\n", Sun_Machines[i].name);
break;
} else {
prom_getproperty(prom_root_node, "banner-name",
system_name, sizeof(system_name));
printk("TYPE: %s\n", system_name);
break;
}
}
}
if(i == NUM_SUN_MACHINES)
printk("Uh oh, IDPROM had bogus id_machtype value <%x>\n", machtyp);
return;
}
void
get_idprom(void)
{
prom_getidp((char *) &idprom_buff, sizeof(idprom_buff));
idprom = &idprom_buff;
sparc_display_systype(idprom->id_machtype);
printk("Ethernet address: %x:%x:%x:%x:%x:%x\n",
idprom->id_eaddr[0], idprom->id_eaddr[1], idprom->id_eaddr[2],
idprom->id_eaddr[3], idprom->id_eaddr[4], idprom->id_eaddr[5]);
return;
}
/* find_vac_size() returns the number of bytes in the VAC (virtual
* address cache) on this machine.
*/
int
find_vac_size(void)
{
int vac_prop_len;
int vacsize = 0;
vac_prop_len = prom_getproplen(prom_root_node, "vac-size");
if(vac_prop_len != -1) {
vacsize = prom_getint(prom_root_node, "vac-size");
return vacsize;
} else {
switch(idprom->id_machtype) {
case (SM_SUN4C | SM_4C_SS1): /* SparcStation1 */
case (SM_SUN4C | SM_4C_IPC): /* SparcStation IPX */
case (SM_SUN4C | SM_4C_SS1PLUS): /* SparcStation1+ */
case (SM_SUN4C | SM_4C_SLC): /* SparcStation SLC */
case (SM_SUN4C | SM_4C_SS2): /* SparcStation2 Cache-Chip BUG! */
case (SM_SUN4C | SM_4C_ELC): /* SparcStation ELC */
case (SM_SUN4C | SM_4C_IPX): /* SparcStation IPX */
return 65536;
default:
printk("find_vac_size: Can't determine size of VAC, bailing out...\n");
halt();
break;
};
};
return -1;
}
/* find_vac_linesize() returns the size in bytes of the VAC linesize */
int
find_vac_linesize(void)
{
int vac_prop_len;
vac_prop_len = prom_getproplen(prom_root_node, "vac-linesize");
if(vac_prop_len != -1)
return prom_getint(prom_root_node, "vac-linesize");
else {
switch(idprom->id_machtype) {
case (SM_SUN4C | SM_4C_SS1): /* SparcStation1 */
case (SM_SUN4C | SM_4C_IPC): /* SparcStation IPC */
case (SM_SUN4C | SM_4C_SS1PLUS): /* SparcStation1+ */
case (SM_SUN4C | SM_4C_SLC): /* SparcStation SLC */
return 16;
case (SM_SUN4C | SM_4C_SS2): /* SparcStation2 Cache-Chip BUG! */
case (SM_SUN4C | SM_4C_ELC): /* SparcStation ELC */
case (SM_SUN4C | SM_4C_IPX): /* SparcStation IPX */
return 32;
default:
printk("find_vac_linesize: Can't determine VAC linesize, bailing out...\n");
halt();
break;
};
};
return -1;
}
int
find_vac_hwflushes(void)
{
register int len;
int tmp1, tmp2;
/* Sun 4/75 has typo in prom_node, it's a dash instead of an underscore
* in the property name. :-(
*/
len = prom_getproperty(prom_root_node, "vac_hwflush",
(char *) &tmp1, sizeof(int));
if(len != 4) tmp1=0;
len = prom_getproperty(prom_root_node, "vac-hwflush",
(char *) &tmp2, sizeof(int));
if(len != 4) tmp2=0;
return (tmp1|tmp2);
}
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