diff mbox series

armv7: cache: support L2 cache disable

Message ID f357e377-9cbd-426a-b493-d26a1547205d.haifeng.li@timesintelli.com
State Deferred
Delegated to: Tom Rini
Headers show
Series armv7: cache: support L2 cache disable | expand

Commit Message

Li Haifeng March 19, 2022, 10:36 a.m. UTC 
PL310 is the L2$ controller from ARM used in many SoCs. Before jumping
to linux, UBoot will call v7_outer_cache_disable in
cleanup_before_linux_select to disable L2$. This patch is to support
cache disable of PL310.

Signed-off-by: Haifeng Li <haifeng.li@timesintelli.com>
---

 arch/arm/lib/cache-pl310.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/lib/cache-pl310.c b/arch/arm/lib/cache-pl310.c
index bbaaaa4157..4fd6eda07a 100644
--- a/arch/arm/lib/cache-pl310.c
+++ b/arch/arm/lib/cache-pl310.c
@@ -13,6 +13,11 @@ 

 struct pl310_regs *const pl310 = (struct pl310_regs *)CONFIG_SYS_PL310_BASE;

+void v7_outer_cache_disable(void)
+{
+ writel(0, &pl310->pl310_ctrl);
+}
+
 static void pl310_cache_sync(void)
 {
  writel(0, &pl310->pl310_cache_sync);