diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.1/073-ARM-l2c-only-unlock-caches-if-NS_LOCKDOWN-bit-is-set.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.1/073-ARM-l2c-only-unlock-caches-if-NS_LOCKDOWN-bit-is-set.patch | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/target/linux/bcm53xx/patches-4.1/073-ARM-l2c-only-unlock-caches-if-NS_LOCKDOWN-bit-is-set.patch b/target/linux/bcm53xx/patches-4.1/073-ARM-l2c-only-unlock-caches-if-NS_LOCKDOWN-bit-is-set.patch deleted file mode 100644 index 852dd028d7..0000000000 --- a/target/linux/bcm53xx/patches-4.1/073-ARM-l2c-only-unlock-caches-if-NS_LOCKDOWN-bit-is-set.patch +++ /dev/null @@ -1,149 +0,0 @@ -From e946a8cbe4a47a7c2615ffb0d45712e72c7d0f3a Mon Sep 17 00:00:00 2001 -From: Russell King <rmk+kernel@arm.linux.org.uk> -Date: Fri, 15 May 2015 11:51:51 +0100 -Subject: [PATCH 73/74] ARM: l2c: only unlock caches if NS_LOCKDOWN bit is set - -Some L2C caches have a bit which allows non-secure software to control -the cache lockdown. Some platforms are unable to set this bit. To -avoid receiving an abort while trying to unlock the cache lines, check -the state of this bit before unlocking. We do this by providing a new -method in the l2c_init_data to perform the unlocking. - -Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> ---- - arch/arm/mm/cache-l2x0.c | 26 +++++++++++++++++++++++++- - 1 file changed, 25 insertions(+), 1 deletion(-) - ---- a/arch/arm/mm/cache-l2x0.c -+++ b/arch/arm/mm/cache-l2x0.c -@@ -42,6 +42,7 @@ struct l2c_init_data { - void (*fixup)(void __iomem *, u32, struct outer_cache_fns *); - void (*save)(void __iomem *); - void (*configure)(void __iomem *); -+ void (*unlock)(void __iomem *, unsigned); - struct outer_cache_fns outer_cache; - }; - -@@ -128,7 +129,7 @@ static void l2c_enable(void __iomem *bas - else - l2x0_data->configure(base); - -- l2c_unlock(base, num_lock); -+ l2x0_data->unlock(base, num_lock); - - local_irq_save(flags); - __l2c_op_way(base + L2X0_INV_WAY); -@@ -249,6 +250,7 @@ static const struct l2c_init_data l2c210 - .enable = l2c_enable, - .save = l2c_save, - .configure = l2c_configure, -+ .unlock = l2c_unlock, - .outer_cache = { - .inv_range = l2c210_inv_range, - .clean_range = l2c210_clean_range, -@@ -400,6 +402,12 @@ static void l2c220_enable(void __iomem * - l2c_enable(base, aux, num_lock); - } - -+static void l2c220_unlock(void __iomem *base, unsigned num_lock) -+{ -+ if (readl_relaxed(base + L2X0_AUX_CTRL) & L220_AUX_CTRL_NS_LOCKDOWN) -+ l2c_unlock(base, num_lock); -+} -+ - static const struct l2c_init_data l2c220_data = { - .type = "L2C-220", - .way_size_0 = SZ_8K, -@@ -407,6 +415,7 @@ static const struct l2c_init_data l2c220 - .enable = l2c220_enable, - .save = l2c_save, - .configure = l2c_configure, -+ .unlock = l2c220_unlock, - .outer_cache = { - .inv_range = l2c220_inv_range, - .clean_range = l2c220_clean_range, -@@ -755,6 +764,12 @@ static void l2c310_resume(void) - set_auxcr(get_auxcr() | BIT(3) | BIT(2) | BIT(1)); - } - -+static void l2c310_unlock(void __iomem *base, unsigned num_lock) -+{ -+ if (readl_relaxed(base + L2X0_AUX_CTRL) & L310_AUX_CTRL_NS_LOCKDOWN) -+ l2c_unlock(base, num_lock); -+} -+ - static const struct l2c_init_data l2c310_init_fns __initconst = { - .type = "L2C-310", - .way_size_0 = SZ_8K, -@@ -763,6 +778,7 @@ static const struct l2c_init_data l2c310 - .fixup = l2c310_fixup, - .save = l2c310_save, - .configure = l2c310_configure, -+ .unlock = l2c310_unlock, - .outer_cache = { - .inv_range = l2c210_inv_range, - .clean_range = l2c210_clean_range, -@@ -1067,6 +1083,7 @@ static const struct l2c_init_data of_l2c - .enable = l2c_enable, - .save = l2c_save, - .configure = l2c_configure, -+ .unlock = l2c_unlock, - .outer_cache = { - .inv_range = l2c210_inv_range, - .clean_range = l2c210_clean_range, -@@ -1086,6 +1103,7 @@ static const struct l2c_init_data of_l2c - .enable = l2c220_enable, - .save = l2c_save, - .configure = l2c_configure, -+ .unlock = l2c220_unlock, - .outer_cache = { - .inv_range = l2c220_inv_range, - .clean_range = l2c220_clean_range, -@@ -1213,6 +1231,7 @@ static const struct l2c_init_data of_l2c - .fixup = l2c310_fixup, - .save = l2c310_save, - .configure = l2c310_configure, -+ .unlock = l2c310_unlock, - .outer_cache = { - .inv_range = l2c210_inv_range, - .clean_range = l2c210_clean_range, -@@ -1242,6 +1261,7 @@ static const struct l2c_init_data of_l2c - .fixup = l2c310_fixup, - .save = l2c310_save, - .configure = l2c310_configure, -+ .unlock = l2c310_unlock, - .outer_cache = { - .inv_range = l2c210_inv_range, - .clean_range = l2c210_clean_range, -@@ -1419,6 +1439,7 @@ static const struct l2c_init_data of_aur - .fixup = aurora_fixup, - .save = aurora_save, - .configure = l2c_configure, -+ .unlock = l2c_unlock, - .outer_cache = { - .inv_range = aurora_inv_range, - .clean_range = aurora_clean_range, -@@ -1439,6 +1460,7 @@ static const struct l2c_init_data of_aur - .fixup = aurora_fixup, - .save = aurora_save, - .configure = l2c_configure, -+ .unlock = l2c_unlock, - .outer_cache = { - .resume = l2c_resume, - }, -@@ -1589,6 +1611,7 @@ static const struct l2c_init_data of_bcm - .enable = l2c310_enable, - .save = l2c310_save, - .configure = l2c310_configure, -+ .unlock = l2c310_unlock, - .outer_cache = { - .inv_range = bcm_inv_range, - .clean_range = bcm_clean_range, -@@ -1626,6 +1649,7 @@ static const struct l2c_init_data of_tau - .enable = l2c_enable, - .save = tauros3_save, - .configure = tauros3_configure, -+ .unlock = l2c_unlock, - /* Tauros3 broadcasts L1 cache operations to L2 */ - .outer_cache = { - .resume = l2c_resume, |