diff options
Diffstat (limited to 'lib/cpus/aarch64/cortex_a78.S')
| -rw-r--r-- | lib/cpus/aarch64/cortex_a78.S | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/cpus/aarch64/cortex_a78.S b/lib/cpus/aarch64/cortex_a78.S index 3a74571f0..a1288bab1 100644 --- a/lib/cpus/aarch64/cortex_a78.S +++ b/lib/cpus/aarch64/cortex_a78.S @@ -198,6 +198,71 @@ func check_errata_1952683 b cpu_rev_var_ls endfunc check_errata_1952683 +/* -------------------------------------------------- + * Errata Workaround for Cortex A78 Errata 2132060. + * This applies to revisions r0p0, r1p0, r1p1, and r1p2. + * It is still open. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x1, x17 + * -------------------------------------------------- + */ +func errata_a78_2132060_wa + /* Check revision. */ + mov x17, x30 + bl check_errata_2132060 + cbz x0, 1f + + /* Apply the workaround. */ + mrs x1, CORTEX_A78_CPUECTLR_EL1 + mov x0, #CORTEX_A78_CPUECTLR_EL1_PF_MODE_CNSRV + bfi x1, x0, #CPUECTLR_EL1_PF_MODE_LSB, #CPUECTLR_EL1_PF_MODE_WIDTH + msr CORTEX_A78_CPUECTLR_EL1, x1 +1: + ret x17 +endfunc errata_a78_2132060_wa + +func check_errata_2132060 + /* Applies to r0p0, r0p1, r1p1, and r1p2 */ + mov x1, #0x12 + b cpu_rev_var_ls +endfunc check_errata_2132060 + +/* -------------------------------------------------------------------- + * Errata Workaround for A78 Erratum 2242635. + * This applies to revisions r1p0, r1p1, and r1p2 of the Cortex A78 + * processor and is still open. + * The issue also exists in r0p0 but there is no fix in that revision. + * x0: variant[4:7] and revision[0:3] of current cpu. + * Shall clobber: x0-x17 + * -------------------------------------------------------------------- + */ +func errata_a78_2242635_wa + /* Compare x0 against revisions r1p0 - r1p2 */ + mov x17, x30 + bl check_errata_2242635 + cbz x0, 1f + + ldr x0, =0x5 + msr S3_6_c15_c8_0, x0 /* CPUPSELR_EL3 */ + ldr x0, =0x10F600E000 + msr S3_6_c15_c8_2, x0 /* CPUPOR_EL3 */ + ldr x0, =0x10FF80E000 + msr S3_6_c15_c8_3, x0 /* CPUPMR_EL3 */ + ldr x0, =0x80000000003FF + msr S3_6_c15_c8_1, x0 /* CPUPCR_EL3 */ + + isb +1: + ret x17 +endfunc errata_a78_2242635_wa + +func check_errata_2242635 + /* Applies to revisions r1p0 through r1p2. */ + mov x1, #CPU_REV(1, 0) + mov x2, #CPU_REV(1, 2) + b cpu_rev_var_range +endfunc check_errata_2242635 + /* ------------------------------------------------- * The CPU Ops reset function for Cortex-A78 * ------------------------------------------------- @@ -232,6 +297,16 @@ func cortex_a78_reset_func bl errata_a78_1952683_wa #endif +#if ERRATA_A78_2132060 + mov x0, x18 + bl errata_a78_2132060_wa +#endif + +#if ERRATA_A78_2242635 + mov x0, x18 + bl errata_a78_2242635_wa +#endif + #if ENABLE_AMU /* Make sure accesses from EL0/EL1 and EL2 are not trapped to EL3 */ mrs x0, actlr_el3 @@ -291,6 +366,8 @@ func cortex_a78_errata_report report_errata ERRATA_A78_1951500, cortex_a78, 1951500 report_errata ERRATA_A78_1821534, cortex_a78, 1821534 report_errata ERRATA_A78_1952683, cortex_a78, 1952683 + report_errata ERRATA_A78_2132060, cortex_a78, 2132060 + report_errata ERRATA_A78_2242635, cortex_a78, 2242635 ldp x8, x30, [sp], #16 ret |