path: root/arch/arm/include/asm/mcpm.h
diff options
authorNicolas Pitre <nicolas.pitre@linaro.org>2012-11-27 23:11:20 -0500
committerNicolas Pitre <nicolas.pitre@linaro.org>2013-09-23 18:47:27 -0400
commitde885d147ad2c4a66777e3557440247efde1cc8d (patch)
tree9e10c47ffec8f627809fa7825a5f948f40892b5d /arch/arm/include/asm/mcpm.h
parent5135d875e1457ef946a055003d8f80713e862135 (diff)
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/mcpm.h')
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.