MIPS: Netlogic: Add support for XLP2XX
XLP2XX is first in the series of 28nm XLPII processors.
The changes are to:
* Add processor ID for XLP2XX to asm/cpu.h and kernel/cpu-probe.c.
* Add a cpu_is_xlpii() function to check for XLPII processors.
* Update xlp_mmu_init() to use config4 to enable extended TLB.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5698/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
index d59cdd6..7a4a514 100644
--- a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
+++ b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
@@ -64,5 +64,12 @@
/* Device tree related */
void *xlp_dt_init(void *fdtp);
+static inline int cpu_is_xlpii(void)
+{
+ int chip = read_c0_prid() & 0xff00;
+
+ return chip == PRID_IMP_NETLOGIC_XLP2XX;
+}
+
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_NLM_XLP_H */