diff --git a/guest/vmbase_example/Android.bp b/guest/vmbase_example/Android.bp
index 630cee6..86a63b7 100644
--- a/guest/vmbase_example/Android.bp
+++ b/guest/vmbase_example/Android.bp
@@ -19,8 +19,41 @@
     ],
 }
 
-cc_binary {
-    name: "vmbase_example",
+genrule {
+    name: "vmbase_image.ld.S.mm",
+    // Soong won't let us use cc_object to preprocess *.ld.S files because it
+    // can't resist feeding any and all *.S files to the assembler, which fails
+    // because linker scripts typically aren't valid assembly. Also, cc_object
+    // rejects inputs that don't end in one of .{s,S,c,cpp,cc,cxx,mm}. So keep
+    // the proper extension (.ld.S) for the file in VCS and use this convoluted
+    // extra step to please Soong by pretending that our linker script is in
+    // fact some Object C++ code, which fortunately it doesn't try to compile.
+    srcs: ["image.ld.S"],
+    out: ["image.ld.S.mm"],
+    cmd: "cp $(in) $(out)",
+    visibility: ["//visibility:private"],
+}
+
+cc_defaults {
+    name: "vmbase_example_ld_defaults",
+    defaults: ["vmbase_cc_defaults"],
+    cflags: [
+        "-E",
+        "-P",
+        "-xassembler-with-cpp", // allow C preprocessor directives
+    ],
+    srcs: [":vmbase_image.ld.S.mm"],
+    visibility: ["//visibility:private"],
+}
+
+cc_object {
+    name: "vmbase_example_bios.ld",
+    defaults: ["vmbase_example_ld_defaults"],
+    cflags: ["-DVMBASE_EXAMPLE_IS_BIOS"],
+}
+
+cc_defaults {
+    name: "vmbase_example_elf_defaults",
     defaults: ["vmbase_elf_defaults"],
     srcs: [
         "idmap.S",
@@ -28,16 +61,22 @@
     static_libs: [
         "libvmbase_example",
     ],
+}
+
+cc_binary {
+    name: "vmbase_example_bios",
+    defaults: ["vmbase_example_elf_defaults"],
+    asflags: ["-DVMBASE_EXAMPLE_IS_BIOS"],
     linker_scripts: [
-        "image.ld",
+        ":vmbase_example_bios.ld",
         ":vmbase_sections",
     ],
 }
 
 raw_binary {
-    name: "vmbase_example_bin",
-    stem: "vmbase_example.bin",
-    src: ":vmbase_example",
+    name: "vmbase_example_bios_bin",
+    stem: "vmbase_example_bios.bin",
+    src: ":vmbase_example_bios",
     enabled: false,
     target: {
         android_arm64: {
diff --git a/guest/vmbase_example/idmap.S b/guest/vmbase_example/idmap.S
index 71a6ade..268de5f 100644
--- a/guest/vmbase_example/idmap.S
+++ b/guest/vmbase_example/idmap.S
@@ -43,8 +43,12 @@
 	.quad		.L_TT_TYPE_TABLE + 0f		// up to 1 GiB of DRAM
 	.fill		509, 8, 0x0			// 509 GiB of remaining VA space
 
-	/* level 2 */
-0:	.quad		.L_BLOCK_MEM | 0x80000000	// DT provided by VMM
+0:	/* level 2 */
+#if defined(VMBASE_EXAMPLE_IS_BIOS)
+	.quad		.L_BLOCK_MEM | 0x80000000	// DT provided by VMM
 	.quad		.L_BLOCK_MEM_XIP | 0x80200000	// 2 MiB of DRAM containing image
 	.quad		.L_BLOCK_MEM | 0x80400000	// 2 MiB of writable DRAM
 	.fill		509, 8, 0x0
+#else
+#error "Unexpected vmbase_example mode: failed to generate idmap"
+#endif
diff --git a/guest/vmbase_example/image.ld b/guest/vmbase_example/image.ld.S
similarity index 85%
rename from guest/vmbase_example/image.ld
rename to guest/vmbase_example/image.ld.S
index 95ffdf8..3bfab9c 100644
--- a/guest/vmbase_example/image.ld
+++ b/guest/vmbase_example/image.ld.S
@@ -16,6 +16,10 @@
 
 MEMORY
 {
+#if defined(VMBASE_EXAMPLE_IS_BIOS)
 	image		: ORIGIN = 0x80200000, LENGTH = 2M
 	writable_data	: ORIGIN = 0x80400000, LENGTH = 2M
+#else
+#error "Unexpected vmbase_example mode: failed to generate image layout"
+#endif
 }