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Use SGI0 interruption and TAMP_BACKUP_MAGIC_NUMBER
to synchronize the core1 boot sequence requested by
core0 in psci_cpu_on():
- a initial interruption is needed in ROM code after
RCC_MP_GRSTCSETR_MPUP1RST (psci_cpu_off)
- the ROM code set to 0 the 2 registers
+ TAMP_BACKUP_BRANCH_ADDRESS
+ TAMP_BACKUP_MAGIC_NUMBER
when magic is not egual to
BOOT_API_A7_CORE0_MAGIC_NUMBER
This patch solve issue for cpu1 restart in kernel.
echo 0 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu1/online
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
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Add explaination for the return value of psci_migrate_info_type:
2 = Trusted OS.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
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Add PSCI v1.0 support for Linux and manage PSCI state
for each CPU (affinity 0 level) with all mandatory functions:
- PSCI_VERSION
- CPU_SUSPEND
- CPU_OFF
- CPU_ON
- AFFINITY_INFO
- SYSTEM_OFF
- SYSTEM_RESET
- PSCI_FEATURES
and 1 optional to avoid Linux warning
- MIGRATE_INFO_TYPE
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: CITOOLS <smet-aci-reviews@lists.codex.cro.st.com>
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