From: Barry Song <Baohua.Song@csr.com>
Date: Thu, 20 Dec 2012 09:20:46 +0000 (+0800)
Subject: ARM: PRIMA2: initialize l2x0 according to mach from DT
X-Git-Tag: v3.9-rc1~118^2~26^2~6
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=ea38960fb63ab5cce2442fa88f5041bcfb1ae8e3;p=linux.git

ARM: PRIMA2: initialize l2x0 according to mach from DT

prima2 and marco have diffetent l2 cache configuration, so
we initialize l2x0 cache based on dtb given to kernel.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
---

diff --git a/arch/arm/mach-prima2/l2x0.c b/arch/arm/mach-prima2/l2x0.c
index c99837797d76..cbcbe9cb094c 100644
--- a/arch/arm/mach-prima2/l2x0.c
+++ b/arch/arm/mach-prima2/l2x0.c
@@ -11,19 +11,38 @@
 #include <linux/of.h>
 #include <asm/hardware/cache-l2x0.h>
 
-static struct of_device_id prima2_l2x0_ids[]  = {
-	{ .compatible = "sirf,prima2-pl310-cache" },
+struct l2x0_aux
+{
+	u32 val;
+	u32 mask;
+};
+
+static struct l2x0_aux prima2_l2x0_aux __initconst = {
+	.val = 2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT,
+	.mask =	0,
+};
+
+static struct l2x0_aux marco_l2x0_aux __initconst = {
+	.val = (2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
+		(1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT),
+	.mask = L2X0_AUX_CTRL_MASK,
+};
+
+static struct of_device_id sirf_l2x0_ids[] __initconst = {
+	{ .compatible = "sirf,prima2-pl310-cache", .data = &prima2_l2x0_aux, },
+	{ .compatible = "sirf,marco-pl310-cache", .data = &marco_l2x0_aux, },
 	{},
 };
 
 static int __init sirfsoc_l2x0_init(void)
 {
 	struct device_node *np;
+	const struct l2x0_aux *aux;
 
-	np = of_find_matching_node(NULL, prima2_l2x0_ids);
+	np = of_find_matching_node(NULL, sirf_l2x0_ids);
 	if (np) {
-		pr_info("Initializing prima2 L2 cache\n");
-		return l2x0_of_init(0x40000, 0);
+		aux = of_match_node(sirf_l2x0_ids, np)->data;
+		return l2x0_of_init(aux->val, aux->mask);
 	}
 
 	return 0;