From: John Jacques <john.jacq...@lsi.com>
In some cases, the boot loader will leave the L3 cache in
SFONLY mode. This is required because the early fixup
code in arch/arm/boot/compressed does not flush L3 cache.
This commit causes Linux to enable the L3 cache in the
arch/arm/mach-axxia startup code.
Signed-off-by: John Jacques <john.jacq...@lsi.com>
---
arch/arm/mach-axxia/axxia.c | 14 +++++---------
1 file changed, 5 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mach-axxia/axxia.c b/arch/arm/mach-axxia/axxia.c
index 40b4186ca..a0b3532 100644
--- a/arch/arm/mach-axxia/axxia.c
+++ b/arch/arm/mach-axxia/axxia.c
@@ -63,9 +63,6 @@ static const char *axxia_dt_match[] __initconst = {
};
static void __iomem *base;
-
-#ifdef CONFIG_KEXEC
-
static void __iomem *dickens;
static void set_l3_pstate(u32 newstate)
@@ -95,14 +92,12 @@ static void set_l3_pstate(u32 newstate)
static void
flush_l3(void)
{
- /* Shutdown to flush */
- set_l3_pstate(0);
+ /* Switch to SFONLY to flush */
+ set_l3_pstate(1);
/* ...and then back up again */
set_l3_pstate(3);
}
-#endif
-
static struct map_desc axxia_static_mappings[] __initdata = {
#ifdef CONFIG_DEBUG_LL
{
@@ -204,12 +199,13 @@ static struct notifier_block axxia_amba_nb = {
void __init axxia_dt_init(void)
{
base = ioremap(0x2010000000, 0x40000);
-#ifdef CONFIG_KEXEC
if (!of_find_compatible_node(NULL, NULL, "lsi,axm5500-sim")) {
dickens = ioremap(0x2000000000, SZ_4M);
+#ifdef CONFIG_KEXEC
kexec_reinit = flush_l3;
- }
#endif
+ flush_l3();
+ }
bus_register_notifier(&platform_bus_type, &axxia_platform_nb);
bus_register_notifier(&amba_bustype, &axxia_amba_nb);
--
1.7.9.5
--
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