[rtems commit] bsp/qoriq: Add QORIQ_HAS_WRITE_BACK_L1_CACHE

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    b1ef3674c0bffdd169e070f039d413cceb5e706c
Changeset: http://git.rtems.org/rtems/commit/?id=b1ef3674c0bffdd169e070f039d413cceb5e706c

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Wed Jul 27 11:30:09 2016 +0200

bsp/qoriq: Add QORIQ_HAS_WRITE_BACK_L1_CACHE

Fixes start via U-Boot on P1020.

---

 c/src/lib/libbsp/powerpc/qoriq/configure.ac  | 4 ++++
 c/src/lib/libbsp/powerpc/qoriq/start/start.S | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/c/src/lib/libbsp/powerpc/qoriq/configure.ac b/c/src/lib/libbsp/powerpc/qoriq/configure.ac
index 10dd17c..9e63763 100644
--- a/c/src/lib/libbsp/powerpc/qoriq/configure.ac
+++ b/c/src/lib/libbsp/powerpc/qoriq/configure.ac
@@ -172,6 +172,10 @@ RTEMS_BSPOPTS_SET([QORIQ_HAS_HYPERVISOR_MODE],[qoriq_t*],[1])
 RTEMS_BSPOPTS_SET([QORIQ_HAS_HYPERVISOR_MODE],[*],[])
 RTEMS_BSPOPTS_HELP([QORIQ_HAS_HYPERVISOR_MODE],[defined if the processor core has a hypervisor mode])
 
+RTEMS_BSPOPTS_SET([QORIQ_HAS_WRITE_BACK_L1_CACHE],[qoriq_t*],[])
+RTEMS_BSPOPTS_SET([QORIQ_HAS_WRITE_BACK_L1_CACHE],[*],[1])
+RTEMS_BSPOPTS_HELP([QORIQ_HAS_WRITE_BACK_L1_CACHE],[defined if the L1 cache supports write-back])
+
 RTEMS_BSPOPTS_SET([QORIQ_CLUSTER_1_L2CSR0],[qoriq_t*],[0xfec20000])
 RTEMS_BSPOPTS_SET([QORIQ_CLUSTER_1_L2CSR0],[*],[])
 RTEMS_BSPOPTS_HELP([QORIQ_CLUSTER_1_L2CSR0],[address of Cluster 1 L2CSR0 register])
diff --git a/c/src/lib/libbsp/powerpc/qoriq/start/start.S b/c/src/lib/libbsp/powerpc/qoriq/start/start.S
index 959347c..6d6cd94 100644
--- a/c/src/lib/libbsp/powerpc/qoriq/start/start.S
+++ b/c/src/lib/libbsp/powerpc/qoriq/start/start.S
@@ -60,7 +60,14 @@ _start:
 	bl	bsp_fdt_copy
 #endif /* U_BOOT_USE_FDT */
 
+#ifdef QORIQ_HAS_WRITE_BACK_L1_CACHE
+	LWI	r3, bsp_section_start_begin
+	LWI	r4, bsp_section_data_load_end
+	sub	r4, r4, r3
+	bl	rtems_cache_flush_multiple_data_lines
+#else
 	bl	qoriq_l1cache_invalidate
+#endif
 
 #ifdef QORIQ_CLUSTER_1_L2CSR0
 	LWI	r3, QORIQ_CLUSTER_1_L2CSR0