CCN: Add API to query the PART0 ID from CCN
This patch adds the API `ccn_get_part0_id` to query the PART0 ID from the
PERIPHERAL_ID 0 register in the CCN driver. This ID allows to distinguish
the variant of CCN present on the system and possibly enable dynamic
configuration of the IP based on the variant. Also added an assert in
`ccn_master_to_rn_id_map()` to ensure that the master map bitfield provided
by the platform is within the expected interface id.
Change-Id: I92d2db7bd93a9be8a7fbe72a522cbcba0aba2d0e
diff --git a/include/drivers/arm/ccn.h b/include/drivers/arm/ccn.h
index 2361596..85c45c6 100644
--- a/include/drivers/arm/ccn.h
+++ b/include/drivers/arm/ccn.h
@@ -51,6 +51,13 @@
#define CCN_L3_RUN_MODE_HAM 0x2 /* HNF_PM_HALF */
#define CCN_L3_RUN_MODE_FAM 0x3 /* HNF_PM_FULL */
+/* part 0 IDs for various CCN variants */
+#define CCN_502_PART0_ID 0x30
+#define CCN_504_PART0_ID 0x26
+#define CCN_505_PART0_ID 0x27
+#define CCN_508_PART0_ID 0x28
+#define CCN_512_PART0_ID 0x29
+
/*
* The following macro takes the value returned from a read of a HN-F P-state
* status register and returns the retention state value.
@@ -107,6 +114,7 @@
unsigned int top_addr_bit1,
unsigned char three_sn_en);
unsigned int ccn_get_l3_run_mode(void);
+int ccn_get_part0_id(uintptr_t periphbase);
#endif /* __ASSEMBLY__ */
#endif /* __CCN_H__ */