diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2014-08-04 18:31:44 -0700 |
|---|---|---|
| committer | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2014-11-10 07:23:37 +0000 |
| commit | bf0acda1d6c269d7e3dca9bc9f5d6e9cdd5e1112 (patch) | |
| tree | 150e0bd86fd9f74ff80cf829547da1108484eda5 /arch | |
| parent | a1da316869ad376a23529540ff0191a23b45337b (diff) | |
ARM: qcom: scm: Get cacheline size from CTR
Instead of hardcoding the cacheline size as 32, get the cacheline size from
the CTR register.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-qcom/scm.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/arm/mach-qcom/scm.c b/arch/arm/mach-qcom/scm.c index 820c72165e19..c08786ebf116 100644 --- a/arch/arm/mach-qcom/scm.c +++ b/arch/arm/mach-qcom/scm.c @@ -27,9 +27,6 @@ #include "scm.h" -/* Cache line size for msm8x60 */ -#define CACHELINESIZE 32 - #define SCM_ENOMEM -5 #define SCM_EOPNOTSUPP -4 #define SCM_EINVAL_ADDR -3 @@ -214,13 +211,18 @@ static int __scm_call(const struct scm_command *cmd) static void scm_inv_range(unsigned long start, unsigned long end) { - start = round_down(start, CACHELINESIZE); - end = round_up(end, CACHELINESIZE); + u32 cacheline_size, ctr; + + asm volatile("mrc p15, 0, %0, c0, c0, 1" : "=r" (ctr)); + cacheline_size = 4 << ((ctr >> 16) & 0xf); + + start = round_down(start, cacheline_size); + end = round_up(end, cacheline_size); outer_inv_range(start, end); while (start < end) { asm ("mcr p15, 0, %0, c7, c6, 1" : : "r" (start) : "memory"); - start += CACHELINESIZE; + start += cacheline_size; } dsb(); isb(); |