* Setup some generic flags we can probe on SH-4A parts
*/
if (((pvr >> 16) & 0xff) == 0x10) {
- if ((cvr & 0x10000000) == 0)
+ boot_cpu_data.family = CPU_FAMILY_SH4A;
+
+ if ((cvr & 0x10000000) == 0) {
boot_cpu_data.flags |= CPU_HAS_DSP;
+ boot_cpu_data.family = CPU_FAMILY_SH4AL_DSP;
+ }
- boot_cpu_data.flags |= CPU_HAS_LLSC;
+ boot_cpu_data.flags |= CPU_HAS_LLSC | CPU_HAS_PERF_COUNTER;
boot_cpu_data.cut_major = pvr & 0x7f;
+
+ boot_cpu_data.icache.ways = 4;
+ boot_cpu_data.dcache.ways = 4;
+ } else {
+ /* And some SH-4 defaults.. */
+ boot_cpu_data.flags |= CPU_HAS_PTEA;
+ boot_cpu_data.family = CPU_FAMILY_SH4;
}
/* FPU detection works for everyone */
- if ((cvr & 0x20000000) == 1)
+ if ((cvr & 0x20000000))
boot_cpu_data.flags |= CPU_HAS_FPU;
/* Mask off the upper chip ID */
switch (pvr) {
case 0x205:
boot_cpu_data.type = CPU_SH7750;
- boot_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
- CPU_HAS_PERF_COUNTER;
+ boot_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG |
+ CPU_HAS_PERF_COUNTER;
break;
case 0x206:
boot_cpu_data.type = CPU_SH7750S;
- boot_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
- CPU_HAS_PERF_COUNTER;
+ boot_cpu_data.flags |= CPU_HAS_P2_FLUSH_BUG |
+ CPU_HAS_PERF_COUNTER;
break;
case 0x1100:
boot_cpu_data.type = CPU_SH7751;
- boot_cpu_data.flags |= CPU_HAS_FPU;
break;
case 0x2001:
case 0x2004:
boot_cpu_data.type = CPU_SH7770;
- boot_cpu_data.icache.ways = 4;
- boot_cpu_data.dcache.ways = 4;
-
- boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_LLSC;
break;
case 0x2006:
case 0x200A:
else
boot_cpu_data.type = CPU_SH7780;
- boot_cpu_data.icache.ways = 4;
- boot_cpu_data.dcache.ways = 4;
-
- boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
- CPU_HAS_LLSC;
break;
case 0x3000:
case 0x3003:
case 0x3009:
boot_cpu_data.type = CPU_SH7343;
- boot_cpu_data.icache.ways = 4;
- boot_cpu_data.dcache.ways = 4;
- boot_cpu_data.flags |= CPU_HAS_LLSC;
break;
case 0x3004:
case 0x3007:
boot_cpu_data.type = CPU_SH7785;
- boot_cpu_data.icache.ways = 4;
- boot_cpu_data.dcache.ways = 4;
- boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
- CPU_HAS_LLSC;
break;
case 0x4004:
boot_cpu_data.type = CPU_SH7786;
- boot_cpu_data.icache.ways = 4;
- boot_cpu_data.dcache.ways = 4;
- boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
- CPU_HAS_LLSC | CPU_HAS_PTEAEX;
+ boot_cpu_data.flags |= CPU_HAS_PTEAEX | CPU_HAS_L2_CACHE;
break;
case 0x3008:
- boot_cpu_data.icache.ways = 4;
- boot_cpu_data.dcache.ways = 4;
- boot_cpu_data.flags |= CPU_HAS_LLSC;
-
switch (prr) {
case 0x50:
case 0x51:
boot_cpu_data.type = CPU_SH7723;
- boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_L2_CACHE;
+ boot_cpu_data.flags |= CPU_HAS_L2_CACHE;
break;
case 0x70:
boot_cpu_data.type = CPU_SH7366;
break;
}
break;
+ case 0x300b:
+ boot_cpu_data.type = CPU_SH7724;
+ boot_cpu_data.flags |= CPU_HAS_L2_CACHE;
+ break;
case 0x4000: /* 1st cut */
case 0x4001: /* 2nd cut */
boot_cpu_data.type = CPU_SHX3;
- boot_cpu_data.icache.ways = 4;
- boot_cpu_data.dcache.ways = 4;
- boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER |
- CPU_HAS_LLSC;
break;
case 0x700:
boot_cpu_data.type = CPU_SH4_501;
boot_cpu_data.type = CPU_SH4_202;
boot_cpu_data.icache.ways = 2;
boot_cpu_data.dcache.ways = 2;
- boot_cpu_data.flags |= CPU_HAS_FPU;
break;
case 0x500 ... 0x501:
switch (prr) {
boot_cpu_data.icache.ways = 2;
boot_cpu_data.dcache.ways = 2;
- boot_cpu_data.flags |= CPU_HAS_FPU;
-
- break;
- default:
- boot_cpu_data.type = CPU_SH_NONE;
break;
}
-#ifdef CONFIG_CPU_HAS_PTEA
- boot_cpu_data.flags |= CPU_HAS_PTEA;
-#endif
-
/*
* On anything that's not a direct-mapped cache, look to the CVR
* for I/D-cache specifics.
}
/*
- * Setup the L2 cache desc
- *
* SH-4A's have an optional PIPT L2.
*/
if (boot_cpu_data.flags & CPU_HAS_L2_CACHE) {
- /* Bug if we can't decode the L2 info */
- BUG_ON(!(cvr & 0xf));
-
- /* Silicon and specifications have clearly never met.. */
- cvr ^= 0xf;
-
/*
- * Size calculation is much more sensible
- * than it is for the L1.
- *
- * Sizes are 128KB, 258KB, 512KB, and 1MB.
+ * Verify that it really has something hooked up, this
+ * is the safety net for CPUs that have optional L2
+ * support yet do not implement it.
*/
- size = (cvr & 0xf) << 17;
-
- BUG_ON(!size);
-
- boot_cpu_data.scache.way_incr = (1 << 16);
- boot_cpu_data.scache.entry_shift = 5;
- boot_cpu_data.scache.ways = 4;
- boot_cpu_data.scache.linesz = L1_CACHE_BYTES;
-
- boot_cpu_data.scache.entry_mask =
- (boot_cpu_data.scache.way_incr -
- boot_cpu_data.scache.linesz);
-
- boot_cpu_data.scache.sets = size /
- (boot_cpu_data.scache.linesz *
- boot_cpu_data.scache.ways);
-
- boot_cpu_data.scache.way_size =
- (boot_cpu_data.scache.sets *
- boot_cpu_data.scache.linesz);
+ if ((cvr & 0xf) == 0)
+ boot_cpu_data.flags &= ~CPU_HAS_L2_CACHE;
+ else {
+ /*
+ * Silicon and specifications have clearly never
+ * met..
+ */
+ cvr ^= 0xf;
+
+ /*
+ * Size calculation is much more sensible
+ * than it is for the L1.
+ *
+ * Sizes are 128KB, 258KB, 512KB, and 1MB.
+ */
+ size = (cvr & 0xf) << 17;
+
+ boot_cpu_data.scache.way_incr = (1 << 16);
+ boot_cpu_data.scache.entry_shift = 5;
+ boot_cpu_data.scache.ways = 4;
+ boot_cpu_data.scache.linesz = L1_CACHE_BYTES;
+
+ boot_cpu_data.scache.entry_mask =
+ (boot_cpu_data.scache.way_incr -
+ boot_cpu_data.scache.linesz);
+
+ boot_cpu_data.scache.sets = size /
+ (boot_cpu_data.scache.linesz *
+ boot_cpu_data.scache.ways);
+
+ boot_cpu_data.scache.way_size =
+ (boot_cpu_data.scache.sets *
+ boot_cpu_data.scache.linesz);
+ }
}
return 0;
git.openpandora.org / pandora-kernel.git / blobdiff