Make the RAM size of the riscv ULP linker script configurable

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "esp-idf-hal"
-version = "0.32.1"
+version = "0.32.2"
 authors = ["sapir <yasapir@gmail.com>", "Ivan Markov <ivan.markov@gmail.com>"]
 edition = "2018"
 resolver = "2"

build.rs

@@ -4,24 +4,22 @@ fn main() -> anyhow::Result<()> {
 }
 
 #[cfg(feature = "ulp")]
-fn main() -> anyhow::Result<()> {
+fn main() {
     println!("cargo:rustc-cfg=esp32s2");
 
     let ulp_dir = std::env::current_dir().unwrap().join("ulp");
-
     println!("cargo:rustc-link-search={}", ulp_dir.display());
 
-    println!("cargo:rustc-link-lib=static=ulp_start");
-
-    println!("cargo:rerun-if-changed=build.rs");
     println!(
         "cargo:rerun-if-changed={}",
         ulp_dir.join("libulp_start.a").display()
     );
     println!(
         "cargo:rerun-if-changed={}",
-        ulp_dir.join("ulp_link.x").display()
+        ulp_dir.join("ulp_link_base.x").display()
+    );
+    println!(
+        "cargo:rerun-if-changed={}",
+        ulp_dir.join("ulp_link_default.x").display()
     );
-
-    Ok(())
 }

ulp/ulp_link_base.x

@@ -1,5 +1,3 @@
-PROVIDE(_ram_size = 2K);
-
 PROVIDE(UserSoft = DefaultHandler);
 PROVIDE(SupervisorSoft = DefaultHandler);
 PROVIDE(MachineSoft = DefaultHandler);

ulp/ulp_link_default.x

@@ -0,0 +1,2 @@
+PROVIDE(_ram_size = 4K);
+INCLUDE ulp_link_base.x;