summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-kirkwood
diff options
context:
space:
mode:
authorRonen Shitrit <rshitrit@marvell.com>2008-09-23 15:28:10 +0300
committerNicolas Pitre <nico@cam.org>2008-09-25 16:29:21 -0400
commit4360bb41920ffacd4a935fa692768129ee5bef4e (patch)
tree8d5bbe15ad4c39d089ac42ab0330d8c515584f65 /arch/arm/mach-kirkwood
parent3d014b01e54ce08d15a598f0bfb3ce597f14ca03 (diff)
downloadblackbird-op-linux-4360bb41920ffacd4a935fa692768129ee5bef4e.tar.gz
blackbird-op-linux-4360bb41920ffacd4a935fa692768129ee5bef4e.zip
[ARM] Kirkwood: add support for L2 cache WB/WT selection
Feroceon L2 cache can work in eighther write through or write back mode on Kirkwood. Add the option to configure this mode according to Kconfig. Signed-off-by: Ronen Shitrit <rshitrit@marvell.com> Signed-off-by: Nicolas Pitre <nico@marvell.com>
Diffstat (limited to 'arch/arm/mach-kirkwood')
-rw-r--r--arch/arm/mach-kirkwood/common.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index c8516e352d1c..85cad05d8c5b 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -588,9 +588,15 @@ static char * __init kirkwood_id(void)
}
}
-static int __init is_l2_writethrough(void)
+static void __init kirkwood_l2_init(void)
{
- return !!(readl(L2_CONFIG_REG) & L2_WRITETHROUGH);
+#ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH
+ writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG);
+ feroceon_l2_init(1);
+#else
+ writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG);
+ feroceon_l2_init(0);
+#endif
}
void __init kirkwood_init(void)
@@ -605,6 +611,6 @@ void __init kirkwood_init(void)
kirkwood_setup_cpu_mbus();
#ifdef CONFIG_CACHE_FEROCEON_L2
- feroceon_l2_init(is_l2_writethrough());
+ kirkwood_l2_init();
#endif
}
OpenPOWER on IntegriCloud