Apply workarounds for A53 Cat A Errata 835769 and 843419
These errata are only applicable to AArch64 state. See the errata notice
for more details:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.epm048406/index.html
Introduce the build options ERRATA_A53_835769 and ERRATA_A53_843419.
Enable both of them for Juno.
Apply the 835769 workaround as following:
* Compile with -mfix-cortex-a53-835769
* Link with --fix-cortex-a53-835769
Apply the 843419 workaround as following:
* Link with --fix-cortex-a53-843419
The erratum 843419 workaround can lead the linker to create new sections
suffixed with "*.stub*" and 4KB aligned. The erratum 835769 can lead the
linker to create new "*.stub" sections with no particular alignment.
Also add support for LDFLAGS_aarch32 and LDFLAGS_aarch64 in Makefile for
architecture-specific linker options.
Change-Id: Iab3337e338b7a0a16b0d102404d9db98c154f8f8
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
diff --git a/lib/cpus/aarch64/cortex_a53.S b/lib/cpus/aarch64/cortex_a53.S
index d369c6d..7a17f8f 100644
--- a/lib/cpus/aarch64/cortex_a53.S
+++ b/lib/cpus/aarch64/cortex_a53.S
@@ -138,6 +138,26 @@
b cpu_rev_var_hs
endfunc check_errata_855873
+/*
+ * Errata workaround for Cortex A53 Errata #835769.
+ * This applies to revisions <= r0p4 of Cortex A53.
+ * This workaround is statically enabled at build time.
+ */
+func check_errata_835769
+ mov x1, #0x04
+ b cpu_rev_var_ls
+endfunc check_errata_835769
+
+/*
+ * Errata workaround for Cortex A53 Errata #843419.
+ * This applies to revisions <= r0p4 of Cortex A53.
+ * This workaround is statically enabled at build time.
+ */
+func check_errata_843419
+ mov x1, #0x04
+ b cpu_rev_var_ls
+endfunc check_errata_843419
+
/* -------------------------------------------------
* The CPU Ops reset function for Cortex-A53.
* Shall clobber: x0-x19
@@ -251,7 +271,9 @@
* checking functions of each errata.
*/
report_errata ERRATA_A53_826319, cortex_a53, 826319
+ report_errata ERRATA_A53_835769, cortex_a53, 835769
report_errata ERRATA_A53_836870, cortex_a53, disable_non_temporal_hint
+ report_errata ERRATA_A53_843419, cortex_a53, 843419
report_errata ERRATA_A53_855873, cortex_a53, 855873
ldp x8, x30, [sp], #16