Add support for customized text start address

Author: qiuchengxuan

config/src/config.rs

@@ -12,6 +12,7 @@ pub struct Config {
     pub memory: Memory,
     pub heap: Heap,
     pub linker: Linker,
+    pub text: Option<Text>,
     pub probe: Option<Probe>,
     pub log: Option<Log>,
 }
@@ -71,6 +72,13 @@ pub struct HeapPool {
     pub capacity: u32,
 }
 
+#[non_exhaustive]
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub struct Text {
+    pub start: u32,
+}
+
 #[non_exhaustive]
 #[derive(Clone, Debug, Serialize, Deserialize)]
 #[serde(rename_all = "kebab-case")]

src/templates/layout.ld.hbs

@@ -30,7 +30,13 @@ SECTIONS
     } > FLASH
 {{~ /if}}
 
-    .text :
+{{~ #if config.text.start }}
+    _stext = {{addr config.text.start}};
+{{~ else}}
+    _stext = ADDR(.vtable) + SIZEOF(.vtable);
+{{~ /if}}
+
+    .text _stext:
     {
         *(.text.reset);
         *(.text.*);