FWU: Add Firmware Update support in BL1 for ARM platforms
This patch adds Firmware Update support for ARM platforms.
New files arm_bl1_fwu.c and juno_bl1_setup.c were added to provide
platform specific Firmware update code.
BL1 now includes mmap entry for `ARM_MAP_NS_DRAM1` to map DRAM for
authenticating NS_BL2U image(For both FVP and JUNO platform).
Change-Id: Ie116cd83f5dc00aa53d904c2f1beb23d58926555
diff --git a/plat/arm/common/arm_bl1_fwu.c b/plat/arm/common/arm_bl1_fwu.c
new file mode 100644
index 0000000..9a0d93a
--- /dev/null
+++ b/plat/arm/common/arm_bl1_fwu.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <bl_common.h>
+#include <debug.h>
+#include <errno.h>
+#include <plat_arm.h>
+#include <tbbr_img_desc.h>
+
+
+/* Struct to keep track of usable memory */
+typedef struct bl1_mem_info{
+ uintptr_t mem_base;
+ unsigned int mem_size;
+} bl1_mem_info_t;
+
+bl1_mem_info_t fwu_addr_map_secure[] = {
+ {
+ .mem_base = ARM_SHARED_RAM_BASE,
+ .mem_size = ARM_SHARED_RAM_SIZE
+ },
+ {
+ .mem_size = 0
+ }
+};
+
+bl1_mem_info_t fwu_addr_map_non_secure[] = {
+ {
+ .mem_base = ARM_NS_DRAM1_BASE,
+ .mem_size = ARM_NS_DRAM1_SIZE
+ },
+ {
+ .mem_base = V2M_FLASH0_BASE,
+ .mem_size = V2M_FLASH0_SIZE
+ },
+ {
+ .mem_size = 0
+ }
+};
+
+int bl1_plat_mem_check(uintptr_t mem_base,
+ unsigned int mem_size,
+ unsigned int flags)
+{
+ unsigned int index = 0;
+ bl1_mem_info_t *mmap;
+
+ assert(mem_base);
+ assert(mem_size);
+
+ /*
+ * Check the given image source and size.
+ */
+ if (GET_SEC_STATE(flags) == SECURE)
+ mmap = fwu_addr_map_secure;
+ else
+ mmap = fwu_addr_map_non_secure;
+
+ while (mmap[index].mem_size) {
+ if ((mem_base >= mmap[index].mem_base) &&
+ ((mem_base + mem_size)
+ <= (mmap[index].mem_base +
+ mmap[index].mem_size)))
+ return 0;
+
+ index++;
+ }
+
+ return -ENOMEM;
+}
+
+/*******************************************************************************
+ * This function does linear search for image_id and returns image_desc.
+ ******************************************************************************/
+image_desc_t *bl1_plat_get_image_desc(unsigned int image_id)
+{
+ unsigned int index = 0;
+
+ while (bl1_tbbr_image_descs[index].image_id != INVALID_IMAGE_ID) {
+ if (bl1_tbbr_image_descs[index].image_id == image_id)
+ return &bl1_tbbr_image_descs[index];
+ index++;
+ }
+
+ return NULL;
+}