diff --git a/config/libc/picolibc.in b/config/libc/picolibc.in
index cd6da1ed..6c4c6cac 100644
--- a/config/libc/picolibc.in
+++ b/config/libc/picolibc.in
@@ -123,3 +123,43 @@ config LIBC_PICOLIBC_EXTRA_CONFIG_ARRAY
     default ""
     help
       Extra flags to pass to meson when configuring picolibc.
+
+config LIBC_PICOLIBC_DEFAULT_FLASH_ADDR
+    string
+    prompt "Default flash address for picolibc.ld"
+    default "0x10000000"
+    help
+      Sets the default base adddress for the read-only portion of the
+      application when linked using the default picolibc link
+      script. Can be overridden on the linker command line using
+      -Wl,--defsym=__flash=<value>
+
+config LIBC_PICOLIBC_DEFAULT_FLASH_SIZE
+    string
+    prompt "Default flash size for picolibc.ld"
+    default "0x00010000"
+    help
+      Sets the default size for the read-only portion of the
+      application when linked using the default picolibc link script.
+      Can be overridden on the linker command line using
+      -Wl,--defsym=__flash_size=<value>
+
+config LIBC_PICOLIBC_DEFAULT_RAM_ADDR
+    string
+    prompt "Default ram address for picolibc.ld"
+    default "0x20000000"
+    help
+      Sets the default base adddress for the read-write portion of the
+      application when linked using the default picolibc link
+      script. Can be overridden on the linker command line using
+      -Wl,--defsym=__ram=<value>
+
+config LIBC_PICOLIBC_DEFAULT_RAM_SIZE
+    string
+    prompt "Default ram size for picolibc.ld"
+    default "0x00008000"
+    help
+      Sets the default size for the read-write portion of the
+      application when linked using the default picolibc link script.
+      Can be overridden on the linker command line using
+      -Wl,--defsym=__ram_size=<value>
diff --git a/scripts/build/companion_libs/340-picolibc.sh b/scripts/build/companion_libs/340-picolibc.sh
index 929babf0..0b2038e6 100644
--- a/scripts/build/companion_libs/340-picolibc.sh
+++ b/scripts/build/companion_libs/340-picolibc.sh
@@ -82,6 +82,10 @@ endian = '${CT_ARCH_ENDIAN}'
 c_args = [ ${meson_cflags} '-nostdlib', '-fno-common', '-ftls-model=local-exec' ]
 needs_exe_wrapper = true
 skip_sanity_check = true
+default_flash_addr = '${CT_LIBC_PICOLIBC_DEFAULT_FLASH_ADDR}'
+default_flash_size = '${CT_LIBC_PICOLIBC_DEFAULT_FLASH_SIZE}'
+default_ram_addr = '${CT_LIBC_PICOLIBC_DEFAULT_RAM_ADDR}'
+default_ram_size = '${CT_LIBC_PICOLIBC_DEFAULT_RAM_SIZE}'
 EOF
 
     local picolibc_sysroot_dir