diff options
| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2012-11-28 08:11:20 +0400 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2013-09-24 02:47:27 +0400 |
| commit | de885d147ad2c4a66777e3557440247efde1cc8d (patch) | |
| tree | 9e10c47ffec8f627809fa7825a5f948f40892b5d /arch/arm/include/asm | |
| parent | 5135d875e1457ef946a055003d8f80713e862135 (diff) | |
| download | linux-de885d147ad2c4a66777e3557440247efde1cc8d.tar.xz | |
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/include/asm')
| -rw-r--r-- | arch/arm/include/asm/mcpm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h index 0f7b7620e9a5..7626a7fd4938 100644 --- a/arch/arm/include/asm/mcpm.h +++ b/arch/arm/include/asm/mcpm.h @@ -42,6 +42,14 @@ extern void mcpm_entry_point(void); void mcpm_set_entry_vector(unsigned cpu, unsigned cluster, void *ptr); /* + * This sets an early poke i.e a value to be poked into some address + * from very early assembly code before the CPU is ungated. The + * address must be physical, and if 0 then nothing will happen. + */ +void mcpm_set_early_poke(unsigned cpu, unsigned cluster, + unsigned long poke_phys_addr, unsigned long poke_val); + +/* * CPU/cluster power operations API for higher subsystems to use. */ |