diff options
| author | Tomasz Figa <t.figa@samsung.com> | 2015-01-08 06:51:07 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-01-16 14:35:31 (GMT) |
| commit | c6d1a2d0078a30eb6290428a858c4e790a0e8691 (patch) | |
| tree | 4c17f459b41e36f302e72850f2d21181a3c81b2d | |
| parent | 6b49241ac2525818508ee2baff9a58541c65421c (diff) | |
| download | linux-c6d1a2d0078a30eb6290428a858c4e790a0e8691.tar.xz | |
ARM: 8260/1: l2c: Add interface to ask hypervisor to configure L2C
Because certain secure hypervisor do not allow writes to individual L2C
registers, but rather expect set of parameters to be passed as argument
to secure monitor calls, there is a need to provide an interface for the
L2C driver to ask the firmware to configure the hardware according to
specified parameters. This patch adds such.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Nishanth Menon <nm@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/include/asm/outercache.h | 3 | ||||
| -rw-r--r-- | arch/arm/mm/cache-l2x0.c | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h index 891a56b..563b92f 100644 --- a/arch/arm/include/asm/outercache.h +++ b/arch/arm/include/asm/outercache.h @@ -23,6 +23,8 @@ #include <linux/types.h> +struct l2x0_regs; + struct outer_cache_fns { void (*inv_range)(unsigned long, unsigned long); void (*clean_range)(unsigned long, unsigned long); @@ -36,6 +38,7 @@ struct outer_cache_fns { /* This is an ARM L2C thing */ void (*write_sec)(unsigned long, unsigned); + void (*configure)(const struct l2x0_regs *); }; extern struct outer_cache_fns outer_cache; diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index dde0d54..5288153 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -110,6 +110,11 @@ static inline void l2c_unlock(void __iomem *base, unsigned num) static void l2c_configure(void __iomem *base) { + if (outer_cache.configure) { + outer_cache.configure(&l2x0_saved_regs); + return; + } + if (l2x0_data->configure) l2x0_data->configure(base); @@ -910,6 +915,7 @@ static int __init __l2c_init(const struct l2c_init_data *data, fns = data->outer_cache; fns.write_sec = outer_cache.write_sec; + fns.configure = outer_cache.configure; if (data->fixup) data->fixup(l2x0_base, cache_id, &fns); |