diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7b071a00425d..4a2fd3deaa16 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1495,6 +1495,9 @@ config ARCH_SUPPORTS_KEXEC_IMAGE_VERIFY_SIG
 config ARCH_DEFAULT_KEXEC_IMAGE_VERIFY_SIG
 	def_bool y
 
+config ARCH_SUPPORTS_KEXEC_KHO
+	def_bool y
+
 config ARCH_SUPPORTS_CRASH_DUMP
 	def_bool y
 
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 417a8a86b2db..9aa05b84d202 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -346,6 +346,8 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p)
 
 	paging_init();
 
+	kho_reserve_previous_mem();
+
 	acpi_table_upgrade();
 
 	/* Parse the ACPI tables for possible boot-time configuration */
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 74c1db8ce271..1a8fc91509af 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -358,6 +358,8 @@ void __init bootmem_init(void)
 	 */
 	arch_reserve_crashkernel();
 
+	kho_reserve_scratch();
+
 	memblock_dump_all();
 }
 
@@ -386,6 +388,12 @@ void __init mem_init(void)
 	/* this will put all unused low memory onto the freelists */
 	memblock_free_all();
 
+	/*
+	 * Now that all KHO pages are marked as reserved, let's flip them back
+	 * to normal pages with accurate refcount.
+	 */
+	kho_populate_refcount();
+
 	/*
 	 * Check boundaries twice: Some fundamental inconsistencies can be
 	 * detected at build time already.
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index bf502ba8da95..f9b9a36fb722 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1006,6 +1006,42 @@ void __init early_init_dt_check_for_usable_mem_range(void)
 		memblock_add(rgn[i].base, rgn[i].size);
 }
 
+/**
+ * early_init_dt_check_kho - Decode info required for kexec handover from DT
+ */
+static void __init early_init_dt_check_kho(void)
+{
+	unsigned long node = chosen_node_offset;
+	u64 kho_start, scratch_start, scratch_size, mem_start, mem_size;
+	const __be32 *p;
+	int l;
+
+	if (!IS_ENABLED(CONFIG_KEXEC_KHO) || (long)node < 0)
+		return;
+
+	p = of_get_flat_dt_prop(node, "linux,kho-dt", &l);
+	if (l != (dt_root_addr_cells + dt_root_size_cells) * sizeof(__be32))
+		return;
+
+	kho_start = dt_mem_next_cell(dt_root_addr_cells, &p);
+
+	p = of_get_flat_dt_prop(node, "linux,kho-scratch", &l);
+	if (l != (dt_root_addr_cells + dt_root_size_cells) * sizeof(__be32))
+		return;
+
+	scratch_start = dt_mem_next_cell(dt_root_addr_cells, &p);
+	scratch_size = dt_mem_next_cell(dt_root_addr_cells, &p);
+
+	p = of_get_flat_dt_prop(node, "linux,kho-mem", &l);
+	if (l != (dt_root_addr_cells + dt_root_size_cells) * sizeof(__be32))
+		return;
+
+	mem_start = dt_mem_next_cell(dt_root_addr_cells, &p);
+	mem_size = dt_mem_next_cell(dt_root_addr_cells, &p);
+
+	kho_populate(kho_start, scratch_start, scratch_size, mem_start, mem_size);
+}
+
 #ifdef CONFIG_SERIAL_EARLYCON
 
 int __init early_init_dt_scan_chosen_stdout(void)
@@ -1304,6 +1340,9 @@ void __init early_init_dt_scan_nodes(void)
 
 	/* Handle linux,usable-memory-range property */
 	early_init_dt_check_for_usable_mem_range();
+
+	/* Handle kexec handover */
+	early_init_dt_check_kho();
 }
 
 bool __init early_init_dt_scan(void *params)
diff --git a/drivers/of/kexec.c b/drivers/of/kexec.c
index 68278340cecf..59070b09ad45 100644
--- a/drivers/of/kexec.c
+++ b/drivers/of/kexec.c
@@ -264,6 +264,55 @@ static inline int setup_ima_buffer(const struct kimage *image, void *fdt,
 }
 #endif /* CONFIG_IMA_KEXEC */
 
+static int kho_add_chosen(const struct kimage *image, void *fdt, int chosen_node)
+{
+	void *dt = NULL;
+	phys_addr_t dt_mem = 0;
+	phys_addr_t dt_len = 0;
+	phys_addr_t scratch_mem = 0;
+	phys_addr_t scratch_len = 0;
+	void *mem_cache = NULL;
+	phys_addr_t mem_cache_mem = 0;
+	phys_addr_t mem_cache_len = 0;
+	int ret = 0;
+
+#ifdef CONFIG_KEXEC_KHO
+	dt = image->kho.dt.buffer;
+	dt_mem = image->kho.dt.mem;
+	dt_len = image->kho.dt.bufsz;
+
+	scratch_mem = kho_scratch_phys;
+	scratch_len = kho_scratch_len;
+
+	mem_cache = image->kho.mem_cache.buffer;
+	mem_cache_mem = image->kho.mem_cache.mem;
+	mem_cache_len = image->kho.mem_cache.bufsz;
+#endif
+
+	if (!dt || !mem_cache)
+		goto out;
+
+	pr_debug("Adding kho metadata to DT");
+
+	ret = fdt_appendprop_addrrange(fdt, 0, chosen_node, "linux,kho-dt",
+				       dt_mem, dt_len);
+	if (ret)
+		goto out;
+
+	ret = fdt_appendprop_addrrange(fdt, 0, chosen_node, "linux,kho-scratch",
+				       scratch_mem, scratch_len);
+	if (ret)
+		goto out;
+
+	ret = fdt_appendprop_addrrange(fdt, 0, chosen_node, "linux,kho-mem",
+				       mem_cache_mem, mem_cache_len);
+	if (ret)
+		goto out;
+
+out:
+	return ret;
+}
+
 /*
  * of_kexec_alloc_and_setup_fdt - Alloc and setup a new Flattened Device Tree
  *
@@ -412,6 +461,11 @@ void *of_kexec_alloc_and_setup_fdt(const struct kimage *image,
 		}
 	}
 
+	/* Add kho metadata if this is a KHO image */
+	ret = kho_add_chosen(image, fdt, chosen_node);
+	if (ret)
+		goto out;
+
 	/* add bootargs */
 	if (cmdline) {
 		ret = fdt_setprop_string(fdt, chosen_node, "bootargs", cmdline);
