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Commit 17f3f99f authored by Russell King's avatar Russell King
Browse files

ARM: l2c: write auxctrl register before unlocking 



We should write the auxillary control register before unlocking: the
write may be necessary to enable non-secure access to the lock
registers.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 3b8bad57

arch/arm/mm/cache-l2x0.c

+5 −5
Original line number Diff line number Diff line
@@ -92,10 +92,10 @@ static void l2c_enable(void __iomem *base, u32 aux, unsigned num_lock) 
{

	unsigned long flags;



	l2c_unlock(base, num_lock);



	writel_relaxed(aux, base + L2X0_AUX_CTRL);



	l2c_unlock(base, num_lock);



	local_irq_save(flags);

	__l2c_op_way(base + L2X0_INV_WAY);

	writel_relaxed(0, base + sync_reg_offset);
@@ -368,12 +368,12 @@ static void l2x0_unlock(u32 cache_id) 


static void l2x0_enable(void __iomem *base, u32 aux, unsigned num_lock)

{

	/* Make sure that I&D is not locked down when starting */

	l2x0_unlock(readl_relaxed(base + L2X0_CACHE_ID));



	/* l2x0 controller is disabled */

	writel_relaxed(aux, base + L2X0_AUX_CTRL);



	/* Make sure that I&D is not locked down when starting */

	l2x0_unlock(readl_relaxed(base + L2X0_CACHE_ID));



	l2x0_inv_all();



	/* enable L2X0 */