mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-04 23:08:26 +02:00
[cns3xxx]: add nol2x0 cmdline to disable l2x0 cache
L2 cache via L2X0 cache controller available on some ARM boards can provide a performance boost in some situations but decrease performance in others. This adds a kernel cmdline to disable L2X0 for cns3xxx based boards. Signed-off-by: Tim Harvey <tharvey@gateworks.com> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34874 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
40ccb5f49b
commit
bb460376f5
@ -710,8 +710,6 @@ static struct gpio laguna_gpio_gw2380[] = {
|
||||
*/
|
||||
static void __init laguna_init(void)
|
||||
{
|
||||
cns3xxx_l2x0_init();
|
||||
|
||||
platform_device_register(&laguna_watchdog);
|
||||
|
||||
platform_device_register(&laguna_i2c_controller);
|
||||
|
@ -0,0 +1,47 @@
|
||||
--- a/arch/arm/mach-cns3xxx/core.c
|
||||
+++ b/arch/arm/mach-cns3xxx/core.c
|
||||
@@ -284,11 +284,24 @@ struct sys_timer cns3xxx_timer = {
|
||||
|
||||
#ifdef CONFIG_CACHE_L2X0
|
||||
|
||||
+static int cns3xxx_l2x0_enable = 1;
|
||||
+
|
||||
+static int __init cns3xxx_l2x0_disable(char *s)
|
||||
+{
|
||||
+ cns3xxx_l2x0_enable = 0;
|
||||
+ return 1;
|
||||
+}
|
||||
+__setup("nol2x0", cns3xxx_l2x0_disable);
|
||||
+
|
||||
void __init cns3xxx_l2x0_init(void)
|
||||
{
|
||||
- void __iomem *base = ioremap(CNS3XXX_L2C_BASE, SZ_4K);
|
||||
+ void __iomem *base;
|
||||
u32 val;
|
||||
|
||||
+ if (!cns3xxx_l2x0_enable)
|
||||
+ return;
|
||||
+
|
||||
+ base = ioremap(CNS3XXX_L2C_BASE, SZ_4K);
|
||||
if (WARN_ON(!base))
|
||||
return;
|
||||
|
||||
@@ -321,6 +334,7 @@ void __init cns3xxx_l2x0_init(void)
|
||||
/* 32 KiB, 8-way, parity disable */
|
||||
l2x0_init(base, 0x00540000, 0xfe000fff);
|
||||
}
|
||||
+arch_initcall(cns3xxx_l2x0_init);
|
||||
|
||||
#endif /* CONFIG_CACHE_L2X0 */
|
||||
|
||||
--- a/arch/arm/mach-cns3xxx/cns3420vb.c
|
||||
+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
|
||||
@@ -193,8 +193,6 @@ static struct platform_device *cns3420_p
|
||||
|
||||
static void __init cns3420_init(void)
|
||||
{
|
||||
- cns3xxx_l2x0_init();
|
||||
-
|
||||
platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
|
||||
|
||||
cns3xxx_ahci_init();
|
Loading…
Reference in New Issue
Block a user