Re: [PATCH]armv7: cache: support L2 cache disable

Haifeng Li at
Sat Mar 19 11:55:17 CET 2022

please ignore this thread. I re-sent the patch inline in another thread as Tom mentioned.

From:Haifeng Li < at>
Sent At:2022 Mar. 18 (Fri.) 21:05
To:Tom Rini <trini at>
Cc:u-boot <u-boot at>
Subject:Re: [PATCH]armv7: cache: support L2 cache disable

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 < at>

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

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);

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