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| author | pranav <dangipranav@gmail.com> | 2021-08-09 16:43:22 +0530 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2021-08-18 13:50:34 -0500 |
| commit | 1c0606819666241b5f9d6470a3f11813a6feddb8 (patch) | |
| tree | 6bf0fcf0b0eca1956d217ab2e6e521338c28f618 /bsps | |
| parent | confstr() support for RTEMS (diff) | |
| download | rtems-1c0606819666241b5f9d6470a3f11813a6feddb8.tar.bz2 | |
bsps/raspberrypi: Add SEV Instruction for RPi SMP firmware changes.
The Pi firmware added a wfe(wait for event), the cores 1-3 wait
for the start address being written to the mailbox register, followed
by a SEV poke to the mailbox that acts as a wfe wake-up event.
Diffstat (limited to 'bsps')
| -rw-r--r-- | bsps/arm/raspberrypi/start/bspsmp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/bsps/arm/raspberrypi/start/bspsmp.c b/bsps/arm/raspberrypi/start/bspsmp.c index 44f7a1d376..9dcfb0fb03 100644 --- a/bsps/arm/raspberrypi/start/bspsmp.c +++ b/bsps/arm/raspberrypi/start/bspsmp.c @@ -42,6 +42,7 @@ bool _CPU_SMP_Start_processor( uint32_t cpu_index ) if (cpu_index != cpu_index_self) { BCM2835_REG(BCM2836_MAILBOX_3_WRITE_SET_BASE + 0x10 * cpu_index) = (uint32_t)_start; + _ARM_Send_event(); /* * Wait for secondary processor to complete its basic initialization so |