drivers: marvell: add support for mapping the entire LLC to SRAM
Add llc_sram_enable() and llc_sram_disable() APIs to Marvell
cache_lls driver.
Add LLC_SRAM definition to Marvell common makefile - disabled
by the default.
Add description of LLC_SRAM flag to the build documentation.
Change-Id: Ib348e09752ce1206d29268ef96c9018b781db182
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
diff --git a/plat/marvell/armada/common/marvell_common.mk b/plat/marvell/armada/common/marvell_common.mk
index f5f0c41..fcc97ac 100644
--- a/plat/marvell/armada/common/marvell_common.mk
+++ b/plat/marvell/armada/common/marvell_common.mk
@@ -16,8 +16,21 @@
# flag to switch from PLL to ARO
ARO_ENABLE := 0
$(eval $(call add_define,ARO_ENABLE))
+
+# Convert LLC to secure SRAM
+LLC_SRAM := 0
+$(eval $(call add_define,LLC_SRAM))
+
# Enable/Disable LLC
+ifeq (${LLC_SRAM}, 0)
LLC_ENABLE := 1
+else
+# When LLC_SRAM=1, the entire LLC converted to SRAM and enabled at BL1.
+# All existing cases activating LLC at BL31 stage should be disabled.
+# The below assignment does not allow changing the LLC_ENABLE
+# value in the command line.
+LLC_ENABLE = 0
+endif
$(eval $(call add_define,LLC_ENABLE))
include lib/xlat_tables_v2/xlat_tables.mk