Auto generate memory.x

Cargo.toml

@@ -66,6 +66,7 @@ default = ["unproven"]
 unproven = ["embedded-hal/unproven"]
 device-selected = []
 direct-call-deprecated = []
+ld = []
 rt = ["stm32f3/rt"]
 can = ["embedded-hal-can"]
 
@@ -75,6 +76,14 @@ svd-f303 = ["stm32f3/stm32f303"]
 svd-f373 = ["stm32f3/stm32f373"]
 svd-f3x4 = ["stm32f3/stm32f3x4"]
 
+mem-4 = []
+mem-6 = []
+mem-8 = []
+mem-b = []
+mem-c = []
+mem-d = []
+mem-e = []
+
 gpio-f302 = []
 gpio-f303 = []
 gpio-f303e = []
@@ -84,40 +93,40 @@ gpio-f373 = []
 # Any changes here should be mirrored in README.md, src/lib.rs, and
 # .github/workflows/ci.yml.
 stm32f301 = ["svd-f301", "direct-call-deprecated"]
-stm32f301x6 = ["stm32f301", "gpio-f302", "device-selected"]
-stm32f301x8 = ["stm32f301", "gpio-f302", "device-selected"]
+stm32f301x6 = ["stm32f301", "mem-6", "gpio-f302", "device-selected"]
+stm32f301x8 = ["stm32f301", "mem-8", "gpio-f302", "device-selected"]
 stm32f318 = ["svd-f301", "direct-call-deprecated"]
-stm32f318x8 = ["stm32f318", "gpio-f302", "device-selected"]
+stm32f318x8 = ["stm32f318", "mem-8", "gpio-f302", "device-selected"]
 stm32f302 = ["svd-f302", "direct-call-deprecated"]
-stm32f302x6 = ["stm32f302", "gpio-f302", "device-selected"]
-stm32f302x8 = ["stm32f302", "gpio-f302", "device-selected"]
-stm32f302xb = ["stm32f302", "gpio-f303", "device-selected"]
-stm32f302xc = ["stm32f302", "gpio-f303", "device-selected"]
-stm32f302xd = ["stm32f302", "gpio-f303e", "device-selected"]
-stm32f302xe = ["stm32f302", "gpio-f303e", "device-selected"]
+stm32f302x6 = ["stm32f302", "mem-6", "gpio-f302", "device-selected"]
+stm32f302x8 = ["stm32f302", "mem-8", "gpio-f302", "device-selected"]
+stm32f302xb = ["stm32f302", "mem-b", "gpio-f303", "device-selected"]
+stm32f302xc = ["stm32f302", "mem-c", "gpio-f303", "device-selected"]
+stm32f302xd = ["stm32f302", "mem-d", "gpio-f303e", "device-selected"]
+stm32f302xe = ["stm32f302", "mem-e", "gpio-f303e", "device-selected"]
 stm32f303 = ["svd-f303", "direct-call-deprecated"]
-stm32f303x6 = ["stm32f303", "gpio-f333", "device-selected"]
-stm32f303x8 = ["stm32f303", "gpio-f333", "device-selected"]
-stm32f303xb = ["stm32f303", "gpio-f303", "device-selected"]
-stm32f303xc = ["stm32f303", "gpio-f303", "device-selected"]
-stm32f303xd = ["stm32f303", "gpio-f303e", "device-selected"]
-stm32f303xe = ["stm32f303", "gpio-f303e", "device-selected"]
+stm32f303x6 = ["stm32f303", "mem-6", "gpio-f333", "device-selected"]
+stm32f303x8 = ["stm32f303", "mem-8", "gpio-f333", "device-selected"]
+stm32f303xb = ["stm32f303", "mem-b", "gpio-f303", "device-selected"]
+stm32f303xc = ["stm32f303", "mem-c", "gpio-f303", "device-selected"]
+stm32f303xd = ["stm32f303", "mem-d", "gpio-f303e", "device-selected"]
+stm32f303xe = ["stm32f303", "mem-e", "gpio-f303e", "device-selected"]
 stm32f328 = ["svd-f303", "direct-call-deprecated"]
-stm32f328x8 = ["stm32f328", "gpio-f333", "device-selected"]
+stm32f328x8 = ["stm32f328", "mem-8", "gpio-f333", "device-selected"]
 stm32f358 = ["svd-f303", "direct-call-deprecated"]
-stm32f358xc = ["stm32f358", "gpio-f303", "device-selected"]
+stm32f358xc = ["stm32f358", "mem-c", "gpio-f303", "device-selected"]
 stm32f398 = ["svd-f303", "direct-call-deprecated"]
-stm32f398xe = ["stm32f398", "gpio-f303e", "device-selected"]
+stm32f398xe = ["stm32f398", "mem-e", "gpio-f303e", "device-selected"]
 stm32f373 = ["svd-f373", "direct-call-deprecated"]
-stm32f373x8 = ["stm32f373", "gpio-f373", "device-selected"]
-stm32f373xb = ["stm32f373", "gpio-f373", "device-selected"]
-stm32f373xc = ["stm32f373", "gpio-f373", "device-selected"]
+stm32f373x8 = ["stm32f373", "mem-8", "gpio-f373", "device-selected"]
+stm32f373xb = ["stm32f373", "mem-b", "gpio-f373", "device-selected"]
+stm32f373xc = ["stm32f373", "mem-c", "gpio-f373", "device-selected"]
 stm32f378 = ["svd-f373", "direct-call-deprecated"]
-stm32f378xc = ["stm32f378", "gpio-f373", "device-selected"]
+stm32f378xc = ["stm32f378", "mem-c", "gpio-f373", "device-selected"]
 stm32f334 = ["svd-f3x4", "direct-call-deprecated"]
-stm32f334x4 = ["stm32f334", "gpio-f333", "device-selected"]
-stm32f334x6 = ["stm32f334", "gpio-f333", "device-selected"]
-stm32f334x8 = ["stm32f334", "gpio-f333", "device-selected"]
+stm32f334x4 = ["stm32f334", "mem-4", "gpio-f333", "device-selected"]
+stm32f334x6 = ["stm32f334", "mem-6", "gpio-f333", "device-selected"]
+stm32f334x8 = ["stm32f334", "mem-8", "gpio-f333", "device-selected"]
 
 defmt-default = ["defmt"]
 defmt-trace = ["defmt"]
@@ -137,45 +146,45 @@ opt-level = "s"
 
 [[example]]
 name = "pwm"
-required-features = ["stm32f303xc"]
+required-features = ["ld", "stm32f303xc"]
 
 [[example]]
 name = "toggle"
-required-features = ["rt", "stm32f303xc"]
+required-features = ["ld", "stm32f303xc"]
 
 [[example]]
 name = "usb_serial"
-required-features = ["rt", "stm32f303xc", "stm32-usbd"]
+required-features = ["ld", "stm32f303xc", "stm32-usbd"]
 
 [[example]]
 name = "spi"
-required-features = ["stm32f303"]
+required-features = ["ld", "stm32f303"]
 
 [[example]]
 name = "can"
-required-features = ["rt", "can", "stm32f303"]
+required-features = ["ld", "can", "stm32f303"]
 
 [[example]]
 name = "serial_dma"
-required-features = ["stm32f303"]
+required-features = ["ld", "stm32f303"]
 
 [[example]]
 name = "adc"
-required-features = ["stm32f303"]
+required-features = ["ld", "stm32f303"]
 
 [[example]]
 name = "i2c_scanner"
-required-features = ["stm32f303xc"]
+required-features = ["ld", "stm32f303xc"]
 
 [[example]]
 name = "gpio_erased"
-required-features = ["rt", "stm32f303xc"]
+required-features = ["ld", "stm32f303xc"]
 
 [[example]]
 name = "gpio_interrupts"
-required-features = ["rt", "stm32f303xc"]
+required-features = ["ld", "rt", "stm32f303xc"]
 
 [[test]]
 name = "rcc"
-required-features = ["rt", "defmt"]
+required-features = ["defmt"]
 harness = false

build.rs

@@ -0,0 +1,65 @@
+use std::{env, fs::File, io::prelude::*, path::PathBuf};
+
+fn main() {
+    if cfg!(feature = "ld") {
+        gen_memory_x();
+    }
+    println!("cargo:rerun-if-changed=build.rs");
+}
+
+fn gen_memory_x() {
+    #![allow(clippy::unneeded_wildcard_pattern)]
+
+    let mem_cfg_set = (
+        cfg!(feature = "mem-4"),
+        cfg!(feature = "mem-6"),
+        cfg!(feature = "mem-8"),
+        cfg!(feature = "mem-b"),
+        cfg!(feature = "mem-c"),
+        cfg!(feature = "mem-d"),
+        cfg!(feature = "mem-e"),
+    );
+    let flash = match mem_cfg_set {
+        (true, ..) => 16,
+        (_, true, ..) => 32,
+        (_, _, true, ..) => 64,
+        (.., true, _, _, _) => 128,
+        (.., _, true, _, _) => 256,
+        (.., _, _, true, _) => 384,
+        (.., _, _, _, true) => 512,
+        _ => unreachable!(),
+    };
+    let ccmram = if cfg!(feature = "svd-f303") || cfg!(feature = "svd-f3x4") {
+        match mem_cfg_set {
+            (true, ..) | (_, true, ..) | (_, _, true, ..) => 4,
+            (.., true, _, _, _) | (.., _, true, _, _) => 8,
+            (.., _, _, true, _) | (.., _, _, _, true) => 16,
+            _ => unreachable!(),
+        }
+    } else {
+        0
+    };
+    let ram = match mem_cfg_set {
+        (true, ..) | (_, true, ..) | (_, _, true, ..) => 16,
+        (.., true, _, _, _) if cfg!(feature = "svd-f373") => 24,
+        (.., true, _, _, _) if cfg!(feature = "svd-f302") => 32,
+        (.., _, true, _, _) if cfg!(feature = "svd-f373") => 32,
+        (.., true, _, _, _) if cfg!(feature = "svd-f303") => 40,
+        (.., _, true, _, _) if cfg!(feature = "svd-f302") => 40,
+        (.., _, true, _, _) if cfg!(feature = "svd-f303") => 48,
+        (.., _, _, true, _) | (.., _, _, _, true) if cfg!(feature = "svd-f302") => 64,
+        (.., _, _, true, _) | (.., _, _, _, true) if cfg!(feature = "svd-f303") => 80,
+        _ => unreachable!(),
+    } - ccmram;
+
+    let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    let mut file = File::create(out_dir.join("memory.x")).unwrap();
+    writeln!(file, "MEMORY {{").unwrap();
+    writeln!(file, "    FLASH (rx) : o = 0x8000000, l = {}K", flash).unwrap();
+    if ccmram > 0 {
+        writeln!(file, "    CCMRAM (rwx) : o = 0x10000000, l = {}K", ccmram).unwrap();
+    }
+    writeln!(file, "    RAM (rwx) : o = 0x20000000, l = {}K", ram).unwrap();
+    writeln!(file, "}}").unwrap();
+    println!("cargo:rustc-link-search={}", out_dir.display());
+}