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Merge pull request #762 from douglas-raillard-arm/dr/doc_build_info

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Clarify dependency for PSCI_EXTENDED_STATE_ID
This commit is contained in:
danh-arm 2016-11-22 10:49:57 +00:00 committed by GitHub
commit 5c0df525ac
2 changed files with 6 additions and 4 deletions
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3
docs/user-guide.md
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@ -380,7 +380,8 @@ performed.
means by default the original power-state format is used by the PSCI
implementation. This flag should be specified by the platform makefile
and it governs the return value of PSCI_FEATURES API for CPU_SUSPEND
smc function id.
smc function id. When this option is enabled on ARM platforms, the
option `ARM_RECOM_STATE_ID_ENC` needs to be set to 1 as well.
* `RESET_TO_BL31`: Enable BL31 entrypoint as the CPU reset vector instead
of the BL1 entrypoint. It can take the value 0 (CPU reset to BL1

7
plat/arm/common/arm_common.mk
View File

@ -58,11 +58,12 @@ endif
# State-ID encoding to be parsed.
ARM_RECOM_STATE_ID_ENC := 0
# If the PSCI_EXTENDED_STATE_ID is set, then the recommended state ID need to
# be used. Else throw a build error.
# If the PSCI_EXTENDED_STATE_ID is set, then ARM_RECOM_STATE_ID_ENC need to
# be set. Else throw a build error.
ifeq (${PSCI_EXTENDED_STATE_ID}, 1)
ifeq (${ARM_RECOM_STATE_ID_ENC}, 0)
$(error "Incompatible STATE_ID build option specified")
$(error Build option ARM_RECOM_STATE_ID_ENC needs to be set if \
PSCI_EXTENDED_STATE_ID is set for ARM platforms)
endif
endif