Merge changes I256959d7,I721376bf into integration
* changes:
fix(cpus): remove plat_can_cmo check for aarch32
fix(cpus): update doc and check for plat_can_cmo
diff --git a/docs/getting_started/porting-guide.rst b/docs/getting_started/porting-guide.rst
index 7f38054..aa57e1d 100644
--- a/docs/getting_started/porting-guide.rst
+++ b/docs/getting_started/porting-guide.rst
@@ -1502,8 +1502,8 @@
- This function indicates whether cache management operations should be
performed. It returns 0 if CMOs should be skipped and non-zero
otherwise.
-- The function must not clobber x2 and x3. It's also not safe to rely on stack.
- Otherwise obey AAPCS.
+- The function must not clobber x1, x2 and x3. It's also not safe to rely on
+ stack. Otherwise obey AAPCS.
Modifications specific to a Boot Loader stage
---------------------------------------------
diff --git a/lib/aarch32/cache_helpers.S b/lib/aarch32/cache_helpers.S
index fd9b33f..13d1872 100644
--- a/lib/aarch32/cache_helpers.S
+++ b/lib/aarch32/cache_helpers.S
@@ -37,27 +37,12 @@
bx lr
.endm
-.macro check_plat_can_cmo
-#if CONDITIONAL_CMO
- mov r3, lr
- mov r2, r0
- bl plat_can_cmo
- mov lr, r3
- cmp r0, #0
- bne 1f
- bx lr
-1:
- mov r0, r2
-#endif
-.endm
-
/* ------------------------------------------
* Clean+Invalidate from base address till
* size. 'r0' = addr, 'r1' = size
* ------------------------------------------
*/
func flush_dcache_range
- check_plat_can_cmo
do_dcache_maintenance_by_mva cimvac, DCCIMVAC
endfunc flush_dcache_range
@@ -67,7 +52,6 @@
* ------------------------------------------
*/
func clean_dcache_range
- check_plat_can_cmo
do_dcache_maintenance_by_mva cmvac, DCCMVAC
endfunc clean_dcache_range
@@ -77,7 +61,6 @@
* ------------------------------------------
*/
func inv_dcache_range
- check_plat_can_cmo
do_dcache_maintenance_by_mva imvac, DCIMVAC
endfunc inv_dcache_range
@@ -185,7 +168,6 @@
* ---------------------------------------------------------------
*/
func dcsw_op_louis
- check_plat_can_cmo
dcsw_op #LOUIS_SHIFT, #CLIDR_FIELD_WIDTH, #LEVEL_SHIFT
endfunc dcsw_op_louis
@@ -198,7 +180,6 @@
* ---------------------------------------------------------------
*/
func dcsw_op_all
- check_plat_can_cmo
dcsw_op #LOC_SHIFT, #CLIDR_FIELD_WIDTH, #LEVEL_SHIFT
endfunc dcsw_op_all
@@ -224,7 +205,6 @@
* ---------------------------------------------------------------
*/
func dcsw_op_level1
- check_plat_can_cmo
dcsw_op_level #(1 << LEVEL_SHIFT)
endfunc dcsw_op_level1
@@ -237,7 +217,6 @@
* ---------------------------------------------------------------
*/
func dcsw_op_level2
- check_plat_can_cmo
dcsw_op_level #(2 << LEVEL_SHIFT)
endfunc dcsw_op_level2
@@ -250,6 +229,5 @@
* ---------------------------------------------------------------
*/
func dcsw_op_level3
- check_plat_can_cmo
dcsw_op_level #(3 << LEVEL_SHIFT)
endfunc dcsw_op_level3
diff --git a/lib/aarch64/cache_helpers.S b/lib/aarch64/cache_helpers.S
index 67fafb1..314ed6e 100644
--- a/lib/aarch64/cache_helpers.S
+++ b/lib/aarch64/cache_helpers.S
@@ -217,6 +217,7 @@
func dcsw_op_louis
+ check_plat_can_cmo
dcsw_op #LOUIS_SHIFT, #CLIDR_FIELD_WIDTH, #LEVEL_SHIFT
endfunc dcsw_op_louis