Merge "Revert workaround for A76 erratum 1800710" into integration
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b9ad2bb83e
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@ -241,9 +241,6 @@ For Cortex-A76, the following errata build flags are defined :
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- ``ERRATA_A76_1791580``: This applies errata 1791580 workaround to Cortex-A76
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CPU. This needs to be enabled only for revision <= r4p0 of the CPU.
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- ``ERRATA_A76_1800710``: This applies errata 1800710 workaround to Cortex-A76
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CPU. This needs to be enabled only for revision <= r4p0 of the CPU.
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- ``ERRATA_A76_1165522``: This applies errata 1165522 workaround to all
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revisions of Cortex-A76 CPU. This errata is fixed in r3p0 but due to
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limitation of errata framework this errata is applied to all revisions
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@ -20,7 +20,6 @@
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#define CORTEX_A76_CPUECTLR_EL1_WS_THR_L2 (ULL(3) << 24)
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#define CORTEX_A76_CPUECTLR_EL1_BIT_51 (ULL(1) << 51)
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#define CORTEX_A76_CPUECTLR_EL1_BIT_53 (ULL(1) << 53)
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/*******************************************************************************
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* CPU Auxiliary Control register specific definitions.
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@ -381,35 +381,6 @@ func check_errata_1791580
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b cpu_rev_var_ls
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endfunc check_errata_1791580
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/* --------------------------------------------------
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* Errata Workaround for Cortex A76 Errata #1800710.
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* This applies to revision <= r4p0 of Cortex A76.
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* Inputs:
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* x0: variant[4:7] and revision[0:3] of current cpu.
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* Shall clobber: x0-x17
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* --------------------------------------------------
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*/
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func errata_a76_1800710_wa
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/* Compare x0 against revision <= r4p0 */
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mov x17, x30
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bl check_errata_1800710
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cbz x0, 1f
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/* Disable allocation of splintered pages in the L2 TLB */
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mrs x1, CORTEX_A76_CPUECTLR_EL1
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orr x1, x1, CORTEX_A76_CPUECTLR_EL1_BIT_53
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msr CORTEX_A76_CPUECTLR_EL1, x1
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isb
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1:
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ret x17
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endfunc errata_a76_1800710_wa
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func check_errata_1800710
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/* Applies to everything <= r4p0 */
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mov x1, #0x40
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b cpu_rev_var_ls
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endfunc check_errata_1800710
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/* --------------------------------------------------
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* Errata Workaround for Cortex A76 Errata #1262606,
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* #1275112, and #1868343. #1262606 and #1275112
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@ -538,11 +509,6 @@ func cortex_a76_reset_func
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bl errata_a76_1791580_wa
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#endif
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#if ERRATA_A76_1800710
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mov x0, x18
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bl errata_a76_1800710_wa
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#endif
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#if WORKAROUND_CVE_2018_3639
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/* If the PE implements SSBS, we don't need the dynamic workaround */
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mrs x0, id_aa64pfr1_el1
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@ -624,7 +590,6 @@ func cortex_a76_errata_report
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report_errata ERRATA_A76_1275112, cortex_a76, 1275112
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report_errata ERRATA_A76_1286807, cortex_a76, 1286807
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report_errata ERRATA_A76_1791580, cortex_a76, 1791580
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report_errata ERRATA_A76_1800710, cortex_a76, 1800710
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report_errata ERRATA_A76_1165522, cortex_a76, 1165522
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report_errata ERRATA_A76_1868343, cortex_a76, 1868343
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report_errata WORKAROUND_CVE_2018_3639, cortex_a76, cve_2018_3639
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@ -270,10 +270,6 @@ ERRATA_A76_1286807 ?=0
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# only to revision <= r4p0 of the Cortex A76 cpu.
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ERRATA_A76_1791580 ?=0
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# Flag to apply erratum 1800710 workaround during reset. This erratum applies
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# only to revision <= r4p0 of the Cortex A76 cpu.
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ERRATA_A76_1800710 ?=0
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# Flag to apply erratum 1165522 workaround during reset. This erratum applies
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# to all revisions of Cortex A76 cpu.
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ERRATA_A76_1165522 ?=0
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@ -555,10 +551,6 @@ $(eval $(call add_define,ERRATA_A76_1286807))
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$(eval $(call assert_boolean,ERRATA_A76_1791580))
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$(eval $(call add_define,ERRATA_A76_1791580))
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# Process ERRATA_A76_1800710 flag
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$(eval $(call assert_boolean,ERRATA_A76_1800710))
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$(eval $(call add_define,ERRATA_A76_1800710))
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# Process ERRATA_A76_1165522 flag
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$(eval $(call assert_boolean,ERRATA_A76_1165522))
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$(eval $(call add_define,ERRATA_A76_1165522))
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