void __init prom_meminit(u32 magic)
{
if (!prom_is_rex(magic))
pmax_setup_memory_region();
else
rex_setup_memory_region();
}
void __init prom_init(void)
{
extern void ATTRIB_NORET dec_machine_halt(void);
static char cpu_msg[] __initdata =
"Sorry, this kernel is compiled for a wrong CPU type!\n";
s32 argc = fw_arg0;
s32 *argv = (void *)fw_arg1;
u32 magic = fw_arg2;
s32 *prom_vec = (void *)fw_arg3;
/*
* Determine which PROM we have
* (and therefore which machine we're on!)
*/
which_prom(magic, prom_vec);
if (prom_is_rex(magic))
rex_clear_cache();
/* Register the early console. */
register_prom_console();
/* Were we compiled with the right CPU option? */
#if defined(CONFIG_CPU_R3000)
if ((current_cpu_data.cputype == CPU_R4000SC) ||
(current_cpu_data.cputype == CPU_R4400SC)) {
static char r4k_msg[] __initdata =
"Please recompile with \"CONFIG_CPU_R4x00 = y\".\n";
printk(cpu_msg);
printk(r4k_msg);
dec_machine_halt();
}
#endif
#if defined(CONFIG_CPU_R4X00)
if ((current_cpu_data.cputype == CPU_R3000) ||
(current_cpu_data.cputype == CPU_R3000A)) {
static char r3k_msg[] __initdata =
"Please recompile with \"CONFIG_CPU_R3000 = y\".\n";
printk(cpu_msg);
printk(r3k_msg);
dec_machine_halt();
}
#endif
prom_meminit(magic);
prom_identify_arch(magic);
prom_init_cmdline(argc, argv, magic);
}
/*
* Detect which PROM the DECSTATION has, and set the callback vectors
* appropriately.
*/
void __init which_prom(s32 magic, s32 *prom_vec)
{
/*
* No sign of the REX PROM's magic number means we assume a non-REX
* machine (i.e. we're on a DS2100/3100, DS5100 or DS5000/2xx)
*/
if (prom_is_rex(magic)) {
/*
* Set up prom abstraction structure with REX entry points.
*/
__rex_bootinit =
(void *)(long)*(prom_vec + REX_PROM_BOOTINIT);
__rex_bootread =
(void *)(long)*(prom_vec + REX_PROM_BOOTREAD);
__rex_getbitmap =
(void *)(long)*(prom_vec + REX_PROM_GETBITMAP);
__prom_getchar =
(void *)(long)*(prom_vec + REX_PROM_GETCHAR);
__prom_getenv =
(void *)(long)*(prom_vec + REX_PROM_GETENV);
__rex_getsysid =
(void *)(long)*(prom_vec + REX_PROM_GETSYSID);
__rex_gettcinfo =
(void *)(long)*(prom_vec + REX_PROM_GETTCINFO);
__prom_printf =
(void *)(long)*(prom_vec + REX_PROM_PRINTF);
__rex_slot_address =
(void *)(long)*(prom_vec + REX_PROM_SLOTADDR);
__rex_clear_cache =
(void *)(long)*(prom_vec + REX_PROM_CLEARCACHE);
} else {
/*
* Set up prom abstraction structure with non-REX entry points.
*/
__prom_getchar = (void *)PMAX_PROM_GETCHAR;
__prom_getenv = (void *)PMAX_PROM_GETENV;
__prom_printf = (void *)PMAX_PROM_PRINTF;
__pmax_open = (void *)PMAX_PROM_OPEN;
__pmax_lseek = (void *)PMAX_PROM_LSEEK;
__pmax_read = (void *)PMAX_PROM_READ;
__pmax_close = (void *)PMAX_PROM_CLOSE;
}
}
int __init prom_init(s32 argc, s32 *argv, u32 magic, s32 *prom_vec)
{
extern void dec_machine_halt(void);
/*
* Determine which PROM's we have
* (and therefore which machine we're on!)
*/
which_prom(magic, prom_vec);
if (prom_is_rex(magic))
rex_clear_cache();
/* Were we compiled with the right CPU option? */
#if defined(CONFIG_CPU_R3000)
if ((current_cpu_data.cputype == CPU_R4000SC) ||
(current_cpu_data.cputype == CPU_R4400SC)) {
prom_printf("Sorry, this kernel is compiled for the wrong CPU type!\n");
prom_printf("Please recompile with \"CONFIG_CPU_R4x00 = y\"\n");
dec_machine_halt();
}
#endif
#if defined(CONFIG_CPU_R4X00)
if ((current_cpu_data.cputype == CPU_R3000) ||
(current_cpu_data.cputype == CPU_R3000A)) {
prom_printf("Sorry, this kernel is compiled for the wrong CPU type!\n");
prom_printf("Please recompile with \"CONFIG_CPU_R3000 = y\"\n");
dec_machine_halt();
}
#endif
prom_meminit(magic);
prom_identify_arch(magic);
prom_init_cmdline(argc, argv, magic);
return 0;
}
void __init prom_init_cmdline(s32 argc, s32 *argv, u32 magic)
{
char *arg;
int start_arg, i;
/*
* collect args and prepare cmd_line
*/
if (!prom_is_rex(magic))
start_arg = 1;
else
start_arg = 2;
for (i = start_arg; i < argc; i++) {
arg = (void *)(long)(argv[i]);
strcat(arcs_cmdline, arg);
if (i < (argc - 1))
strcat(arcs_cmdline, " ");
}
#ifdef PROM_DEBUG
printk("arcs_cmdline: %s\n", &(arcs_cmdline[0]));
#endif
}
void __init prom_identify_arch(u32 magic)
{
unsigned char dec_cpunum, dec_firmrev, dec_etc, dec_systype;
u32 dec_sysid;
if (!prom_is_rex(magic)) {
dec_sysid = simple_strtoul(prom_getenv("systype"),
(char **)0, 0);
} else {
dec_sysid = rex_getsysid();
if (dec_sysid == 0) {
printk("Zero sysid returned from PROM! "
"Assuming a PMAX-like machine.\n");
dec_sysid = 1;
}
}
dec_cpunum = (dec_sysid & 0xff000000) >> 24;
dec_systype = (dec_sysid & 0xff0000) >> 16;
dec_firmrev = (dec_sysid & 0xff00) >> 8;
dec_etc = dec_sysid & 0xff;
/*
* FIXME: This may not be an exhaustive list of DECStations/Servers!
* Put all model-specific initialisation calls here.
*/
switch (dec_systype) {
case DS2100_3100:
mips_machtype = MACH_DS23100;
prom_init_kn01();
break;
case DS5100: /* DS5100 MIPSMATE */
mips_machtype = MACH_DS5100;
prom_init_kn230();
break;
case DS5000_200: /* DS5000 3max */
mips_machtype = MACH_DS5000_200;
prom_init_kn02();
break;
case DS5000_1XX: /* DS5000/100 3min */
mips_machtype = MACH_DS5000_1XX;
prom_init_kn02xa();
break;
case DS5000_2X0: /* DS5000/240 3max+ or DS5900 bigmax */
mips_machtype = MACH_DS5000_2X0;
prom_init_kn03();
if (!(ioasic_read(IO_REG_SIR) & KN03_IO_INR_3MAXP))
mips_machtype = MACH_DS5900;
break;
case DS5000_XX: /* Personal DS5000/xx maxine */
mips_machtype = MACH_DS5000_XX;
prom_init_kn02xa();
break;
case DS5800: /* DS5800 Isis */
mips_machtype = MACH_DS5800;
break;
case DS5400: /* DS5400 MIPSfair */
mips_machtype = MACH_DS5400;
break;
case DS5500: /* DS5500 MIPSfair-2 */
mips_machtype = MACH_DS5500;
break;
default:
mips_machtype = MACH_DSUNKNOWN;
break;
}
if (mips_machtype == MACH_DSUNKNOWN)
printk("This is an %s, id is %x\n",
dec_system_strings[mips_machtype], dec_systype);
else
printk("This is a %s\n", dec_system_strings[mips_machtype]);
}
