diff options
Diffstat (limited to 'lib/cpus/aarch64/cortex_a78c.S')
| -rw-r--r-- | lib/cpus/aarch64/cortex_a78c.S | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/cpus/aarch64/cortex_a78c.S b/lib/cpus/aarch64/cortex_a78c.S index 5cdce89c2..71f07258b 100644 --- a/lib/cpus/aarch64/cortex_a78c.S +++ b/lib/cpus/aarch64/cortex_a78c.S @@ -177,6 +177,36 @@ func check_errata_2772121 b cpu_rev_var_ls endfunc check_errata_2772121 +/* -------------------------------------------------- + * Errata Workaround for Cortex A78C Errata 2779484. + * This applies to revisions r0p1 and r0p2. + * It is still open. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x1, x17 + * -------------------------------------------------- + */ +func errata_a78c_2779484_wa + /* Check revision. */ + mov x17, x30 + bl check_errata_2779484 + cbz x0, 1f + + /* Apply the workaround */ + mrs x1, CORTEX_A78C_ACTLR3_EL1 + orr x1, x1, #BIT(47) + msr CORTEX_A78C_ACTLR3_EL1, x1 + +1: + ret x17 +endfunc errata_a78c_2779484_wa + +func check_errata_2779484 + /* Applies to r0p1 and r0p2*/ + mov x1, #0x01 + mov x2, #0x02 + b cpu_rev_var_range +endfunc check_errata_2779484 + func check_errata_cve_2022_23960 #if WORKAROUND_CVE_2022_23960 mov x0, #ERRATA_APPLIES @@ -215,6 +245,11 @@ func cortex_a78c_reset_func bl errata_a78c_2395411_wa #endif +#if ERRATA_A78C_2779484 + mov x0, x18 + bl errata_a78c_2779484_wa +#endif + #if IMAGE_BL31 && WORKAROUND_CVE_2022_23960 /* * The Cortex-A78c generic vectors are overridden to apply errata @@ -269,6 +304,7 @@ func cortex_a78c_errata_report report_errata ERRATA_A78C_2376749, cortex_a78c, 2376749 report_errata ERRATA_A78C_2395411, cortex_a78c, 2395411 report_errata ERRATA_A78C_2772121, cortex_a78c, 2772121 + report_errata ERRATA_A78C_2779484, cortex_a78c, 2779484 report_errata WORKAROUND_CVE_2022_23960, cortex_a78c, cve_2022_23960 ldp x8, x30, [sp], #16 |