[rtems commit] bsp/raspberrypi: Enable FDT support.

[Christian Mauderer]

Module:    rtems
Branch:    master
Commit:    eca25efe2790b528e30b8e31eb1457be10b3666d
Changeset: http://git.rtems.org/rtems/commit/?id=eca25efe2790b528e30b8e31eb1457be10b3666d

Author:    G S Niteesh <gsnb.gn at gmail.com>
Date:      Fri Jan  3 09:14:14 2020 +0530

bsp/raspberrypi: Enable FDT support.

This commit adds FDT support to the BSP.

---

 bsps/arm/raspberrypi/include/bsp.h            |  4 ++++
 c/src/lib/libbsp/arm/raspberrypi/Makefile.am  |  1 +
 c/src/lib/libbsp/arm/raspberrypi/configure.ac | 12 ++++++++++++
 3 files changed, 17 insertions(+)

diff --git a/bsps/arm/raspberrypi/include/bsp.h b/bsps/arm/raspberrypi/include/bsp.h
index 1075cb1..b81d19c 100644
--- a/bsps/arm/raspberrypi/include/bsp.h
+++ b/bsps/arm/raspberrypi/include/bsp.h
@@ -41,6 +41,10 @@ extern "C" {
 
 #define BSP_FEATURE_IRQ_EXTENSION
 
+#if BSP_START_COPY_FDT_FROM_U_BOOT
+#define BSP_FDT_IS_SUPPORTED
+#endif
+
 #define RPI_L2_CACHE_ENABLE 1
 
 #define BSP_GPIO_PIN_COUNT 32
diff --git a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
index 5326deb..be154bf 100644
--- a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
+++ b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am
@@ -45,6 +45,7 @@ librtemsbsp_a_SOURCES += ../../../../../../bsps/shared/start/sbrk.c
 librtemsbsp_a_SOURCES += ../../../../../../bsps/shared/start/stackalloc.c
 librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/shared/start/bsp-start-memcpy.S
 librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/shared/cp15/arm-cp15-set-ttb-entries.c
+librtemsbsp_a_SOURCES += ../../../../../../bsps/shared/start/bsp-fdt.c
 
 # Startup
 librtemsbsp_a_SOURCES += ../../../../../../bsps/arm/raspberrypi/start/bspstart.c
diff --git a/c/src/lib/libbsp/arm/raspberrypi/configure.ac b/c/src/lib/libbsp/arm/raspberrypi/configure.ac
index 452aa4d..84780db 100644
--- a/c/src/lib/libbsp/arm/raspberrypi/configure.ac
+++ b/c/src/lib/libbsp/arm/raspberrypi/configure.ac
@@ -15,6 +15,18 @@ RTEMS_CANONICAL_TARGET_CPU
 AM_INIT_AUTOMAKE([no-define nostdinc foreign 1.12.2])
 RTEMS_BSP_CONFIGURE
 
+RTEMS_BSPOPTS_SET([BSP_START_COPY_FDT_FROM_U_BOOT],[*],[1])
+RTEMS_BSPOPTS_HELP([BSP_START_COPY_FDT_FROM_U_BOOT],[copy the U-Boot provided FDT to an internal storage])
+
+RTEMS_BSPOPTS_SET([BSP_FDT_BLOB_SIZE_MAX],[*],[262144])
+RTEMS_BSPOPTS_HELP([BSP_FDT_BLOB_SIZE_MAX],[maximum size of the FDT blob in bytes])
+
+RTEMS_BSPOPTS_SET([BSP_FDT_BLOB_READ_ONLY],[*],[1])
+RTEMS_BSPOPTS_HELP([BSP_FDT_BLOB_READ_ONLY],[place the FDT blob into the read-only data area])
+
+RTEMS_BSPOPTS_SET([BSP_FDT_BLOB_COPY_TO_READ_ONLY_LOAD_AREA],[*],[1])
+RTEMS_BSPOPTS_HELP([BSP_FDT_BLOB_COPY_TO_READ_ONLY_LOAD_AREA],[copy the FDT blob into the read-only load area via bsp_fdt_copy()])
+
 RTEMS_BSPOPTS_SET([BSP_START_RESET_VECTOR],[*],[])
 RTEMS_BSPOPTS_HELP([BSP_START_RESET_VECTOR],[reset vector address for BSP start])