powerpc/mp: add support for discontiguous cores
Some SOCs have discontiguously-numbered cores, and so we can't determine the
valid core numbers via the FRR register any more. We define
CPU_TYPE_ENTRY_MASK to specify a discontiguous core mask, and helper functions
to process the mask and enumerate over the set of valid cores.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/common.h b/include/common.h
index d244bd4..05e2f72 100644
--- a/include/common.h
+++ b/include/common.h
@@ -485,7 +485,22 @@
#endif
/* $(CPU)/cpu.c */
+static inline int cpumask_next(int cpu, unsigned int mask)
+{
+ for (cpu++; !((1 << cpu) & mask); cpu++)
+ ;
+
+ return cpu;
+}
+
+#define for_each_cpu(iter, cpu, num_cpus, mask) \
+ for (iter = 0, cpu = cpumask_next(-1, mask); \
+ iter < num_cpus; \
+ iter++, cpu = cpumask_next(cpu, mask)) \
+
int cpu_numcores (void);
+u32 cpu_mask (void);
+int is_core_valid (unsigned int);
int probecpu (void);
int checkcpu (void);
int checkicache (void);