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Cortex-A53: Fix reporting of missing errata when not needed 

Errata 819472, 824069, and 827319 are currently reported in a warning as
missing during boot for platforms that do not need them. Only warn when
the errata is needed for a given revision but not compiled in like other
errata workarounds.

Fixes: bd393704d2 ("Cortex-A53: Workarounds for 819472, 824069 and 827319")
Signed-off-by: Andrew F. Davis <afd@ti.com>
Change-Id: Ifd757b3d0e73a9bd465b98dc20648b6c13397d8d
This commit is contained in:
Andrew F. Davis 2019-04-24 16:11:03 -04:00
parent c3e4e0888d
commit cd884aa6fb
1 changed files with 24 additions and 18 deletions
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42
lib/cpus/aarch64/cortex_a53.S
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@ -45,31 +45,35 @@ endfunc cortex_a53_disable_smp
/* ---------------------------------------------------
* Errata Workaround for Cortex A53 Errata #819472.
* This applies only to revision <= r0p1 of Cortex A53.
* Due to the nature of the errata it is applied unconditionally
* when built in, report it as applicable in this case
* ---------------------------------------------------
*/
func check_errata_819472
/*
* Even though this is only needed for revision <= r0p1, it
* is always applied due to limitations of the current
* errata framework.
*/
mov x0, #ERRATA_APPLIES
#if ERRATA_A53_819472
mov x0, #ERRATA_APPLIES
ret
#else
mov x1, #0x01
b cpu_rev_var_ls
#endif
endfunc check_errata_819472
/* ---------------------------------------------------
* Errata Workaround for Cortex A53 Errata #824069.
* This applies only to revision <= r0p2 of Cortex A53.
* Due to the nature of the errata it is applied unconditionally
* when built in, report it as applicable in this case
* ---------------------------------------------------
*/
func check_errata_824069
/*
* Even though this is only needed for revision <= r0p2, it
* is always applied due to limitations of the current
* errata framework.
*/
mov x0, #ERRATA_APPLIES
#if ERRATA_A53_824069
mov x0, #ERRATA_APPLIES
ret
#else
mov x1, #0x02
b cpu_rev_var_ls
#endif
endfunc check_errata_824069
/* --------------------------------------------------
@ -103,16 +107,18 @@ endfunc check_errata_826319
/* ---------------------------------------------------
* Errata Workaround for Cortex A53 Errata #827319.
* This applies only to revision <= r0p2 of Cortex A53.
* Due to the nature of the errata it is applied unconditionally
* when built in, report it as applicable in this case
* ---------------------------------------------------
*/
func check_errata_827319
/*
* Even though this is only needed for revision <= r0p2, it
* is always applied due to limitations of the current
* errata framework.
*/
mov x0, #ERRATA_APPLIES
#if ERRATA_A53_827319
mov x0, #ERRATA_APPLIES
ret
#else
mov x1, #0x02
b cpu_rev_var_ls
#endif
endfunc check_errata_827319
/* ---------------------------------------------------------------------