Apply errata workarounds only when major/minor revisions match.
Prior to this patch, the errata workarounds were applied for any version of the CPU in the release build and in the debug build an assert failure resulted when the revision did not match. This patch applies errata workarounds in the Cortex-A57 reset handler only if the 'variant' and 'revision' fields read from the MIDR_EL1 match. In the debug build, a warning message is printed for each errata workaround which is not applied. The patch modifies the register usage in 'reset_handler` so as to adhere to ARM procedure calling standards. Fixes ARM-software/tf-issues#242 Change-Id: I51b1f876474599db885afa03346e38a476f84c29
WIP_v2.3-LS
master
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docs/cpu-errata-workarounds.md |
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include/lib/aarch64/arch.h |
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lib/cpus/aarch64/cortex_a57.S |
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lib/cpus/aarch64/cpu_helpers.S |
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