1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index a56bb3528755..c846a9608cbd 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -22,7 +22,7 @@ efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
                         unsigned long map_size, unsigned long desc_size,
                         u32 desc_ver)
 {
-        int node, prev;
+        int node, prev, num_rsv;
         int status;
         u32 fdt_val32;
         u64 fdt_val64;
@@ -73,6 +73,14 @@ efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
                 prev = node;
         }
 
+        /*
+         * Delete all memory reserve map entries. When booting via UEFI,
+         * kernel will use the UEFI memory map to find reserved regions.
+         */
+        num_rsv = fdt_num_mem_rsv(fdt);
+        while (num_rsv-- > 0)
+                fdt_del_mem_rsv(fdt, num_rsv);
+
         node = fdt_subnode_offset(fdt, 0, "chosen");
         if (node < 0) {
                 node = fdt_add_subnode(fdt, 0, "chosen");