mips_ejtag.c|h: use version specific IMPs

and make version specific debug log

Change-Id: I17f7ff757cfa1264a1dadbfe20c5e21de62ef87a
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Reviewed-on: http://openocd.zylin.com/1929
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

2 files changed, 78 insertions, 14 deletions

diff --git a/src/target/mips_ejtag.c b/src/target/mips_ejtag.c
index 277c1d44..375cf517 100644
--- a/src/target/mips_ejtag.c
+++ b/src/target/mips_ejtag.c
@@ -341,6 +341,54 @@ static void mips_ejtag_init_mmr(struct mips_ejtag *ejtag_info)
 	}
 }
 
+static void ejtag_v20_print_imp(struct mips_ejtag *ejtag_info)
+{
+	LOG_DEBUG("EJTAG v2.0: features:%s%s%s%s%s%s%s%s",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_SDBBP) ? " SDBBP_SPECIAL2" : " SDBBP",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_EADDR_NO32BIT) ? " EADDR>32bit" : " EADDR=32bit",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_COMPLEX_BREAK) ? " COMPLEX_BREAK" : "",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_DCACHE_COH) ? " DCACHE_COH" : " DCACHE_NOT_COH",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_ICACHE_COH) ? " ICACHE_COH" : " ICACHE_NOT_COH",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_NOPB) ? " noPB" : " PB",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_NODB) ? " noDB" : " DB",
+		EJTAG_IMP_HAS(EJTAG_V20_IMP_NOIB) ? " noIB" : " IB");
+	LOG_DEBUG("EJTAG v2.0: Break Channels: %i",
+		(ejtag_info->impcode >> EJTAG_V20_IMP_BCHANNELS_SHIFT) &
+		EJTAG_V20_IMP_BCHANNELS_MASK);
+}
+
+static void ejtag_v26_print_imp(struct mips_ejtag *ejtag_info)
+{
+	LOG_DEBUG("EJTAG v2.6: features:%s%s",
+		EJTAG_IMP_HAS(EJTAG_V26_IMP_R3K) ? " R3k" : " R4k",
+		EJTAG_IMP_HAS(EJTAG_V26_IMP_DINT) ? " DINT" : "");
+}
+
+static void ejtag_main_print_imp(struct mips_ejtag *ejtag_info)
+{
+	LOG_DEBUG("EJTAG main: features:%s%s%s%s%s",
+		EJTAG_IMP_HAS(EJTAG_IMP_ASID8) ? " ASID_8" : "",
+		EJTAG_IMP_HAS(EJTAG_IMP_ASID6) ? " ASID_6" : "",
+		EJTAG_IMP_HAS(EJTAG_IMP_MIPS16) ? " MIPS16" : "",
+		EJTAG_IMP_HAS(EJTAG_IMP_NODMA) ? " noDMA" : " DMA",
+		EJTAG_IMP_HAS(EJTAG_DCR_MIPS64) ? " MIPS64" : " MIPS32");
+
+	switch (ejtag_info->ejtag_version) {
+		case EJTAG_VERSION_20:
+			ejtag_v20_print_imp(ejtag_info);
+			break;
+		case EJTAG_VERSION_25:
+		case EJTAG_VERSION_26:
+		case EJTAG_VERSION_31:
+		case EJTAG_VERSION_41:
+		case EJTAG_VERSION_51:
+			ejtag_v26_print_imp(ejtag_info);
+			break;
+		default:
+			break;
+	}
+}
+
 int mips_ejtag_init(struct mips_ejtag *ejtag_info)
 {
 	int retval;
@@ -376,14 +424,7 @@ int mips_ejtag_init(struct mips_ejtag *ejtag_info)
 			LOG_DEBUG("EJTAG: Unknown Version Detected");
 			break;
 	}
-	LOG_DEBUG("EJTAG: features:%s%s%s%s%s%s%s",
-		ejtag_info->impcode & EJTAG_IMP_R3K ? " R3k" : " R4k",
-		ejtag_info->impcode & EJTAG_IMP_DINT ? " DINT" : "",
-		ejtag_info->impcode & (1 << 22) ? " ASID_8" : "",
-		ejtag_info->impcode & (1 << 21) ? " ASID_6" : "",
-		ejtag_info->impcode & EJTAG_IMP_MIPS16 ? " MIPS16" : "",
-		ejtag_info->impcode & EJTAG_IMP_NODMA ? " noDMA" : " DMA",
-		ejtag_info->impcode & EJTAG_DCR_MIPS64  ? " MIPS64" : " MIPS32");
+	ejtag_main_print_imp(ejtag_info);
 
 	if ((ejtag_info->impcode & EJTAG_IMP_NODMA) == 0) {
 		LOG_DEBUG("EJTAG: DMA Access Mode detected. Disabling to "
diff --git a/src/target/mips_ejtag.h b/src/target/mips_ejtag.h
index ead0876d..4c8933c7 100644
--- a/src/target/mips_ejtag.h
+++ b/src/target/mips_ejtag.h
@@ -97,11 +97,35 @@
 #define EJTAG_DEBUG_DM			(1 << 30)
 #define EJTAG_DEBUG_DBD			(1 << 31)
 
-/* implementaion register bits */
-#define EJTAG_IMP_R3K			(1 << 28)
-#define EJTAG_IMP_DINT			(1 << 24)
-#define EJTAG_IMP_NODMA			(1 << 14)
+/* implementation MIPS register bits.
+ * Bits marked with V20 or v2.0 mean that, this registers supported only
+ * by EJTAG v2.0. Bits marked with Lexra or BMIPS are different from the
+ * official EJATG.
+ * NOTE: Lexra or BMIPS use EJTAG v2.0 */
+
+#define EJTAG_IMP_HAS(x)			(ejtag_info->impcode & (x))
+/* v2.0(Lexra) 29 - 1’b1 - Lexra Internal Trace Buffer implemented. This bit
+ * overlaps with version bit of MIPS EJTAG specification. */
+#define EJTAG_V26_IMP_R3K		(1 << 28)
+/* v2.0 - 24:25 - 2’b00- No profiling support */
+#define EJTAG_V26_IMP_DINT		(1 << 24)
+#define EJTAG_V20_IMP_SDBBP		(1 << 23) /* 1’b1 - sdbbp is Special2 Opcode */
+#define EJTAG_IMP_ASID8			(1 << 22)
+#define EJTAG_IMP_ASID6			(1 << 21)
+#define EJTAG_V20_IMP_COMPLEX_BREAK	(1 << 20) /* Complex Breaks supported*/
+#define EJTAG_V20_IMP_EADDR_NO32BIT	(1 << 19) /* EJTAG_ADDR > 32 bits wide */
+#define EJTAG_V20_IMP_DCACHE_COH	(1 << 18) /* DCache does keep DMA coherent */
+#define EJTAG_V20_IMP_ICACHE_COH	(1 << 17) /* DCache does keep DMA coherent */
 #define EJTAG_IMP_MIPS16		(1 << 16)
+#define EJTAG_IMP_NODMA			(1 << 14)
+/* v2.0 - 11:13 external PC trace. Trace PC Width. */
+/* v2.0 - 8:10 external PC trace. PCST Width and DCLK Division Factor */
+#define EJTAG_V20_IMP_NOPB		(1 << 7) /* no processor breaks */
+#define EJTAG_V20_IMP_NODB		(1 << 6) /* no data breaks */
+#define EJTAG_V20_IMP_NOIB		(1 << 5) /* no instruction breaks implemented */
+/* v2.0 - 1:4 Number of Break Channels. */
+#define EJTAG_V20_IMP_BCHANNELS_MASK	0xf
+#define EJTAG_V20_IMP_BCHANNELS_SHIFT	1
 #define EJTAG_DCR_MIPS64		(1 << 0)
 
 /* Debug Control Register DCR */
@@ -184,8 +208,7 @@ struct mips_ejtag {
 	uint32_t ejtag_dbasid_offs;	/* DAB ASID (4Kc) */
 
 	uint32_t ejtag_iba_step_size;
-	uint32_t ejtag_dba_step_size;	/* siez of step till next
-					 * *DBAn register. */
+	uint32_t ejtag_dba_step_size;	/* size of step till next *DBAn register. */
 };
 
 void mips_ejtag_set_instr(struct mips_ejtag *ejtag_info,