diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2014-11-06 15:17:33 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-10 12:01:24 +0200 |
| commit | 6cdacb37f0e84666831d78f4bf9af2cbc30cbb81 (patch) | |
| tree | 00b24a90e82dabeabe6f02efacb513ca2da425de /src/arch/arm64/include/armv8 | |
| parent | 1f4db4046f911b2ed586509de5d8e109b46a9485 (diff) | |
arm64: secmon: add entry point for turned on CPUs
Newly turned on CPUs need a place to go bring its EL3
state inline with expectations. Plumb this path in for
CPUs turning on as well as waking up from a power down
state. Some of the infrastructure declarations were
moved around for easier consumption in ramstage and
secmon. Lastly, a psci_soc_init() is added to
inform the SoC of the CPU's entry point as well do
any initialization.
BUG=chrome-os-partner:32112
BRANCH=None
TEST=Built and booted. On entry point not actually utilized.
Change-Id: I2af424c2906df159f78ed5e0a26a6bc0ba2ba24f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: dbefec678a111e8b42acf2ae162c1ccdd7f9fd40
Original-Change-Id: I7b8c8c828ffb73752ca3ac1117cd895a5aa275d8
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/228296
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9422
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/arch/arm64/include/armv8')
| -rw-r--r-- | src/arch/arm64/include/armv8/arch/cpu.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/arch/arm64/include/armv8/arch/cpu.h b/src/arch/arm64/include/armv8/arch/cpu.h index c6ca7d38c6..d968a06fe4 100644 --- a/src/arch/arm64/include/armv8/arch/cpu.h +++ b/src/arch/arm64/include/armv8/arch/cpu.h @@ -148,4 +148,26 @@ void arch_cpu_wait_for_action(void); */ unsigned int smp_processor_id(void); +/* + * Stages and rmodules have 2 entry points: BSP and non-BSP. Provided + * a pointer the correct non-BSP entry point will be returned. The + * first instruction is for BSP and the 2nd is for non-BSP. Instructions + * are all 32-bit on arm64. + */ +static inline void *secondary_entry_point(void *e) +{ + uintptr_t nonbsp = (uintptr_t)e; + + return (void *)(nonbsp + sizeof(uint32_t)); +} + +/* + * The arm64_cpu_startup() initializes a CPU's exception stack and regular + * stack as well initializing the C environment for the processor. It + * calls into the array of function pointers at symbol c_entry depending + * on BSP state. Note that arm64_cpu_startup contains secondary entry + * point which can be obtained by secondary_entry_point(). + */ +void arm64_cpu_startup(void); + #endif /* __ARCH_CPU_H__ */ |