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| author |   Nicolas Pitre <nicolas.pitre@linaro.org> | 2012-11-27 23:11:20 -0500 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2013-09-23 18:47:27 -0400 |
| commit | de885d147ad2c4a66777e3557440247efde1cc8d (patch) | |
| tree | 9e10c47ffec8f627809fa7825a5f948f40892b5d /arch/arm/common/mcpm_entry.c | |
| parent | ARM: SMP: basic IPI triggered completion support (diff) | |
| download | linux-dev-de885d147ad2c4a66777e3557440247efde1cc8d.tar.xz linux-dev-de885d147ad2c4a66777e3557440247efde1cc8d.zip | |
ARM: mcpm: add a simple poke mechanism to the early entry code
This allows to poke a predetermined value into a specific address
upon entering the early boot code in bL_head.S.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Diffstat (limited to 'arch/arm/common/mcpm_entry.c')
| -rw-r--r-- | arch/arm/common/mcpm_entry.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c index 370236dd1a03..4a2b32fd53a1 100644 --- a/arch/arm/common/mcpm_entry.c +++ b/arch/arm/common/mcpm_entry.c @@ -27,6 +27,18 @@ void mcpm_set_entry_vector(unsigned cpu, unsigned cluster, void *ptr) sync_cache_w(&mcpm_entry_vectors[cluster][cpu]); } +extern unsigned long mcpm_entry_early_pokes[MAX_NR_CLUSTERS][MAX_CPUS_PER_CLUSTER][2]; + +void mcpm_set_early_poke(unsigned cpu, unsigned cluster, + unsigned long poke_phys_addr, unsigned long poke_val) +{ + unsigned long *poke = &mcpm_entry_early_pokes[cluster][cpu][0]; + poke[0] = poke_phys_addr; + poke[1] = poke_val; + __cpuc_flush_dcache_area((void *)poke, 8); + outer_clean_range(__pa(poke), __pa(poke + 2)); +} + static const struct mcpm_platform_ops *platform_ops; int __init mcpm_platform_register(const struct mcpm_platform_ops *ops) |