[PATCH] ARM: mm: print L310 cache controller version

[Flavio Suligoi]

The knowledge of the cache controller version
is very useful during the comparison of the performances
of similar boards, with similar CPU but different versions
of the L310 controller.

Signed-off-by: Flavio Suligoi <f.suligoi@xxxxxxx>
---
 arch/arm/mm/cache-l2x0.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 5b251c8..e5ac670 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -590,6 +590,34 @@ static void l2c310_configure(void __iomem *base)
 	if (revision >= L310_CACHE_ID_RTL_R3P0)
 		l2c_write_sec(l2x0_saved_regs.pwr_ctrl, base,
 			      L310_POWER_CTRL);
+
+	/* Display L310 cache controller version */
+	switch (revision) {
+	case L310_CACHE_ID_RTL_R0P0:
+		pr_info("L2C-310 revision: r0p0\n");
+		break;
+	case L310_CACHE_ID_RTL_R1P0:
+		pr_info("L2C-310 revision: r1p0\n");
+		break;
+	case L310_CACHE_ID_RTL_R2P0:
+		pr_info("L2C-310 revision: r2p0\n");
+		break;
+	case L310_CACHE_ID_RTL_R3P0:
+		pr_info("L2C-310 revision: r3p0\n");
+		break;
+	case L310_CACHE_ID_RTL_R3P1:
+		pr_info("L2C-310 revision: r3p1\n");
+		break;
+	case L310_CACHE_ID_RTL_R3P1_50REL0:
+		pr_info("L2C-310 revision: r3p1 50 rel0\n");
+		break;
+	case L310_CACHE_ID_RTL_R3P2:
+		pr_info("L2C-310 revision: r3p2\n");
+		break;
+	case L310_CACHE_ID_RTL_R3P3:
+		pr_info("L2C-310 revision: r3p3\n");
+		break;
+	}
 }
 
 static int l2c310_starting_cpu(unsigned int cpu)
-- 
2.7.4