- ``ERRATA_N1_1220197``: This applies errata 1220197 workaround to Neoverse-N1
CPU. This needs to be enabled only for revision <= r2p0 of the CPU.
+- ``ERRATA_N1_1257314``: This applies errata 1257314 workaround to Neoverse-N1
+ CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
- ``ERRATA_N1_1315703``: This applies errata 1315703 workaround to Neoverse-N1
CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
b cpu_rev_var_ls
endfunc check_errata_1220197
+/* --------------------------------------------------
+ * Errata Workaround for Neoverse N1 Errata #1257314
+ * This applies to revision <=r3p0 of Neoverse N1.
+ * Inputs:
+ * x0: variant[4:7] and revision[0:3] of current cpu.
+ * Shall clobber: x0-x17
+ * --------------------------------------------------
+ */
+func errata_n1_1257314_wa
+ /* Compare x0 against revision r3p0 */
+ mov x17, x30
+ bl check_errata_1257314
+ cbz x0, 1f
+ mrs x1, NEOVERSE_N1_CPUACTLR3_EL1
+ orr x1, x1, NEOVERSE_N1_CPUACTLR3_EL1_BIT_10
+ msr NEOVERSE_N1_CPUACTLR3_EL1, x1
+ isb
+1:
+ ret x17
+endfunc errata_n1_1257314_wa
+
+func check_errata_1257314
+ /* Applies to <=r3p0 */
+ mov x1, #0x30
+ b cpu_rev_var_ls
+endfunc check_errata_1257314
+
/* --------------------------------------------------
* Errata Workaround for Neoverse N1 Erratum 1315703.
* This applies to revision <= r3p0 of Neoverse N1.
bl errata_n1_1220197_wa
#endif
+#if ERRATA_N1_1257314
+ mov x0, x18
+ bl errata_n1_1257314_wa
+#endif
+
#if ERRATA_N1_1315703
mov x0, x18
bl errata_n1_1315703_wa
report_errata ERRATA_N1_1165347, neoverse_n1, 1165347
report_errata ERRATA_N1_1207823, neoverse_n1, 1207823
report_errata ERRATA_N1_1220197, neoverse_n1, 1220197
+ report_errata ERRATA_N1_1257314, neoverse_n1, 1257314
report_errata ERRATA_N1_1315703, neoverse_n1, 1315703
report_errata ERRATA_DSU_936184, neoverse_n1, dsu_936184
# only to revision <= r2p0 of the Neoverse N1 cpu.
ERRATA_N1_1220197 ?=0
+# Flag to apply erratum 1257314 workaround during reset. This erratum applies
+# only to revision <= r3p0 of the Neoverse N1 cpu.
+ERRATA_N1_1257314 ?=0
+
# Flag to apply erratum 1315703 workaround during reset. This erratum applies
# to revisions before r3p1 of the Neoverse N1 cpu.
ERRATA_N1_1315703 ?=1
$(eval $(call assert_boolean,ERRATA_N1_1220197))
$(eval $(call add_define,ERRATA_N1_1220197))
+# Process ERRATA_N1_1257314 flag
+$(eval $(call assert_boolean,ERRATA_N1_1257314))
+$(eval $(call add_define,ERRATA_N1_1257314))
+
# Process ERRATA_N1_1315703 flag
$(eval $(call assert_boolean,ERRATA_N1_1315703))
$(eval $(call add_define,ERRATA_N1_1315703))