Merge pull request #1849 from loumay-arm/lm/a73_errata
Cortex-A73: Implement workaround for errata 852427
This commit is contained in:
commit
37118a1b5f
|
@ -166,6 +166,9 @@ For Cortex-A72, the following errata build flags are defined :
|
|||
|
||||
For Cortex-A73, the following errata build flags are defined :
|
||||
|
||||
- ``ERRATA_A73_852427``: This applies errata 852427 workaround to Cortex-A73
|
||||
CPU. This needs to be enabled only for revision r0p0 of the CPU.
|
||||
|
||||
- ``ERRATA_A73_855423``: This applies errata 855423 workaround to Cortex-A73
|
||||
CPU. This needs to be enabled only for revision <= r0p1 of the CPU.
|
||||
|
||||
|
|
|
@ -31,6 +31,8 @@
|
|||
|
||||
#define CORTEX_A73_IMP_DEF_REG1_DISABLE_LOAD_PASS_STORE (ULL(1) << 3)
|
||||
|
||||
#define CORTEX_A73_DIAGNOSTIC_REGISTER S3_0_C15_C0_1
|
||||
|
||||
#define CORTEX_A73_IMP_DEF_REG2 S3_0_C15_C0_2
|
||||
|
||||
#endif /* CORTEX_A73_H */
|
||||
|
|
|
@ -35,6 +35,34 @@ func cortex_a73_disable_smp
|
|||
ret
|
||||
endfunc cortex_a73_disable_smp
|
||||
|
||||
/* ---------------------------------------------------
|
||||
* Errata Workaround for Cortex A73 Errata #852427.
|
||||
* This applies only to revision r0p0 of Cortex A73.
|
||||
* Inputs:
|
||||
* x0: variant[4:7] and revision[0:3] of current cpu.
|
||||
* Shall clobber: x0-x17
|
||||
* ---------------------------------------------------
|
||||
*/
|
||||
func errata_a73_852427_wa
|
||||
/*
|
||||
* Compare x0 against revision r0p0
|
||||
*/
|
||||
mov x17, x30
|
||||
bl check_errata_852427
|
||||
cbz x0, 1f
|
||||
mrs x1, CORTEX_A73_DIAGNOSTIC_REGISTER
|
||||
orr x1, x1, #(1 << 12)
|
||||
msr CORTEX_A73_DIAGNOSTIC_REGISTER, x1
|
||||
isb
|
||||
1:
|
||||
ret x17
|
||||
endfunc errata_a73_852427_wa
|
||||
|
||||
func check_errata_852427
|
||||
mov x1, #0x00
|
||||
b cpu_rev_var_ls
|
||||
endfunc check_errata_852427
|
||||
|
||||
/* ---------------------------------------------------
|
||||
* Errata Workaround for Cortex A73 Errata #855423.
|
||||
* This applies only to revision <= r0p1 of Cortex A73.
|
||||
|
@ -71,8 +99,15 @@ endfunc check_errata_855423
|
|||
func cortex_a73_reset_func
|
||||
mov x19, x30
|
||||
bl cpu_get_rev_var
|
||||
mov x18, x0
|
||||
|
||||
#if ERRATA_A73_852427
|
||||
mov x0, x18
|
||||
bl errata_a73_852427_wa
|
||||
#endif
|
||||
|
||||
#if ERRATA_A73_855423
|
||||
mov x0, x18
|
||||
bl errata_a73_855423_wa
|
||||
#endif
|
||||
|
||||
|
@ -200,6 +235,7 @@ func cortex_a73_errata_report
|
|||
* Report all errata. The revision-variant information is passed to
|
||||
* checking functions of each errata.
|
||||
*/
|
||||
report_errata ERRATA_A73_852427, cortex_a73, 852427
|
||||
report_errata ERRATA_A73_855423, cortex_a73, 855423
|
||||
report_errata WORKAROUND_CVE_2017_5715, cortex_a73, cve_2017_5715
|
||||
report_errata WORKAROUND_CVE_2018_3639, cortex_a73, cve_2018_3639
|
||||
|
|
|
@ -159,6 +159,10 @@ ERRATA_A57_859972 ?=0
|
|||
# only to revision <= r0p3 of the Cortex A72 cpu.
|
||||
ERRATA_A72_859971 ?=0
|
||||
|
||||
# Flag to apply erratum 852427 workaround during reset. This erratum applies
|
||||
# only to revision r0p0 of the Cortex A73 cpu.
|
||||
ERRATA_A73_852427 ?=0
|
||||
|
||||
# Flag to apply erratum 855423 workaround during reset. This erratum applies
|
||||
# only to revision <= r0p1 of the Cortex A73 cpu.
|
||||
ERRATA_A73_855423 ?=0
|
||||
|
@ -292,6 +296,10 @@ $(eval $(call add_define,ERRATA_A57_859972))
|
|||
$(eval $(call assert_boolean,ERRATA_A72_859971))
|
||||
$(eval $(call add_define,ERRATA_A72_859971))
|
||||
|
||||
# Process ERRATA_A73_852427 flag
|
||||
$(eval $(call assert_boolean,ERRATA_A73_852427))
|
||||
$(eval $(call add_define,ERRATA_A73_852427))
|
||||
|
||||
# Process ERRATA_A73_855423 flag
|
||||
$(eval $(call assert_boolean,ERRATA_A73_855423))
|
||||
$(eval $(call add_define,ERRATA_A73_855423))
|
||||
|
|
Loading…
Reference in New Issue