1 files changed, 143 insertions, 0 deletions
diff --git a/plat/arm/board/n1sdp/n1sdp_image_load.c b/plat/arm/board/n1sdp/n1sdp_image_load.c
new file mode 100644
index 0000000..6c3528c
--- /dev/null
+++ b/plat/arm/board/n1sdp/n1sdp_image_load.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <common/desc_image_load.h>
+#include <drivers/arm/css/sds.h>
+#include <libfdt.h>
+#include <plat/common/platform.h>
+
+#include "n1sdp_def.h"
+#include <plat/arm/common/plat_arm.h>
+
+/*
+ * Platform information structure stored in SDS.
+ * This structure holds information about platform's DDR
+ * size which will be used to zero out the memory before
+ * enabling the ECC capability as well as information
+ * about multichip setup
+ * 	- multichip mode
+ * 	- secondary_count
+ * 	- Local DDR size in GB, DDR memory in master board
+ * 	- Remote DDR size in GB, DDR memory in secondary board
+ */
+struct n1sdp_plat_info {
+	bool multichip_mode;
+	uint8_t secondary_count;
+	uint8_t local_ddr_size;
+	uint8_t remote_ddr_size;
+} __packed;
+
+/*******************************************************************************
+ * This function inserts Platform information via device tree nodes as,
+ *	platform-info {
+ *		multichip-mode = <0x0>;
+ *		secondary-chip-count = <0x0>;
+ *		local-ddr-size = <0x0>;
+ *		remote-ddr-size = <0x0>;
+ *	};
+ ******************************************************************************/
+static int plat_n1sdp_append_config_node(struct n1sdp_plat_info *plat_info)
+{
+	bl_mem_params_node_t *mem_params;
+	void *fdt;
+	int nodeoffset, err;
+
+	mem_params = get_bl_mem_params_node(NT_FW_CONFIG_ID);
+	if (mem_params == NULL) {
+		ERROR("NT_FW CONFIG base address is NULL\n");
+		return -1;
+	}
+
+	fdt = (void *)(mem_params->image_info.image_base);
+
+	/* Check the validity of the fdt */
+	if (fdt_check_header(fdt) != 0) {
+		ERROR("Invalid NT_FW_CONFIG DTB passed\n");
+		return -1;
+	}
+
+	nodeoffset = fdt_subnode_offset(fdt, 0, "platform-info");
+	if (nodeoffset < 0) {
+		ERROR("NT_FW_CONFIG: Failed to get platform-info node offset\n");
+		return -1;
+	}
+
+	err = fdt_setprop_u32(fdt, nodeoffset, "multichip-mode",
+			plat_info->multichip_mode);
+	if (err < 0) {
+		ERROR("NT_FW_CONFIG: Failed to set multichip-mode\n");
+		return -1;
+	}
+
+	err = fdt_setprop_u32(fdt, nodeoffset, "secondary-chip-count",
+			plat_info->secondary_count);
+	if (err < 0) {
+		ERROR("NT_FW_CONFIG: Failed to set secondary-chip-count\n");
+		return -1;
+	}
+
+	err = fdt_setprop_u32(fdt, nodeoffset, "local-ddr-size",
+			plat_info->local_ddr_size);
+	if (err < 0) {
+		ERROR("NT_FW_CONFIG: Failed to set local-ddr-size\n");
+		return -1;
+	}
+
+	err = fdt_setprop_u32(fdt, nodeoffset, "remote-ddr-size",
+			plat_info->remote_ddr_size);
+	if (err < 0) {
+		ERROR("NT_FW_CONFIG: Failed to set remote-ddr-size\n");
+		return -1;
+	}
+
+	flush_dcache_range((uintptr_t)fdt, mem_params->image_info.image_size);
+
+	return 0;
+}
+
+/*******************************************************************************
+ * This function returns the list of executable images.
+ ******************************************************************************/
+bl_params_t *plat_get_next_bl_params(void)
+{
+	int ret;
+	struct n1sdp_plat_info plat_info;
+
+	ret = sds_init();
+	if (ret != SDS_OK) {
+		ERROR("SDS initialization failed. ret:%d\n", ret);
+		panic();
+	}
+
+	ret = sds_struct_read(N1SDP_SDS_PLATFORM_INFO_STRUCT_ID,
+				N1SDP_SDS_PLATFORM_INFO_OFFSET,
+				&plat_info,
+				N1SDP_SDS_PLATFORM_INFO_SIZE,
+				SDS_ACCESS_MODE_NON_CACHED);
+	if (ret != SDS_OK) {
+		ERROR("Error getting platform info from SDS. ret:%d\n", ret);
+		panic();
+	}
+
+	/* Validate plat_info SDS */
+	if ((plat_info.local_ddr_size == 0U)
+		|| (plat_info.local_ddr_size > N1SDP_MAX_DDR_CAPACITY_GB)
+		|| (plat_info.remote_ddr_size > N1SDP_MAX_DDR_CAPACITY_GB)
+		|| (plat_info.secondary_count > N1SDP_MAX_SECONDARY_COUNT)
+		){
+		ERROR("platform info SDS is corrupted\n");
+		panic();
+	}
+
+	ret = plat_n1sdp_append_config_node(&plat_info);
+	if (ret != 0) {
+		panic();
+	}
+
+	return arm_get_next_bl_params();
+}