Move bootloader main to examples

This should remove some confusion around embassy-boot-* being a library
vs. a binary. The binary is now an example bootloader instead.

4 files changed, 3 insertions, 97 deletions

diff --git a/embassy-boot/stm32/Cargo.toml b/embassy-boot/stm32/Cargo.toml
index 3f198c114..1b6eeef93 100644
--- a/embassy-boot/stm32/Cargo.toml
+++ b/embassy-boot/stm32/Cargo.toml
@@ -2,7 +2,9 @@
 edition = "2021"
 name = "embassy-boot-stm32"
 version = "0.1.0"
-description = "Bootloader for STM32 chips"
+description = "Bootloader lib for STM32 chips"
+
+[lib]
 
 [dependencies]
 defmt = { version = "0.3", optional = true }
diff --git a/embassy-boot/stm32/build.rs b/embassy-boot/stm32/build.rs
deleted file mode 100644
index 3997702f6..000000000
--- a/embassy-boot/stm32/build.rs
+++ /dev/null
@@ -1,32 +0,0 @@
-use std::env;
-use std::fs::File;
-use std::io::Write;
-use std::path::PathBuf;
-
-fn main() {
-    // Put `memory.x` in our output directory and ensure it's
-    // on the linker search path.
-    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
-    File::create(out.join("memory.x"))
-        .unwrap()
-        .write_all(include_bytes!("memory.x"))
-        .unwrap();
-    println!("cargo:rustc-link-search={}", out.display());
-
-    // By default, Cargo will re-run a build script whenever
-    // any file in the project changes. By specifying `memory.x`
-    // here, we ensure the build script is only re-run when
-    // `memory.x` is changed.
-    println!("cargo:rerun-if-changed=memory.x");
-
-    println!("cargo:rustc-link-arg-bins=--nmagic");
-    println!("cargo:rustc-link-arg-bins=-Tlink.x");
-    if env::var("CARGO_FEATURE_DEFMT").is_ok() {
-        println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
-    }
-
-    let target = env::var("TARGET").unwrap();
-    if target.starts_with("thumbv6m-") {
-        println!("cargo:rustc-cfg=armv6m");
-    }
-}
diff --git a/embassy-boot/stm32/memory.x b/embassy-boot/stm32/memory.x
deleted file mode 100644
index 110c23259..000000000
--- a/embassy-boot/stm32/memory.x
+++ /dev/null
@@ -1,18 +0,0 @@
-MEMORY
-{
-  /* NOTE 1 K = 1 KiBi = 1024 bytes */
-  FLASH                             : ORIGIN = 0x08000000, LENGTH = 24K
-  BOOTLOADER_STATE                  : ORIGIN = 0x08006000, LENGTH = 4K
-  ACTIVE                            : ORIGIN = 0x08008000, LENGTH = 32K
-  DFU                               : ORIGIN = 0x08010000, LENGTH = 36K
-  RAM                         (rwx) : ORIGIN = 0x20000008, LENGTH = 16K
-}
-
-__bootloader_state_start = ORIGIN(BOOTLOADER_STATE) - ORIGIN(FLASH);
-__bootloader_state_end = ORIGIN(BOOTLOADER_STATE) + LENGTH(BOOTLOADER_STATE) - ORIGIN(FLASH);
-
-__bootloader_active_start = ORIGIN(ACTIVE) - ORIGIN(FLASH);
-__bootloader_active_end = ORIGIN(ACTIVE) + LENGTH(ACTIVE) - ORIGIN(FLASH);
-
-__bootloader_dfu_start = ORIGIN(DFU) - ORIGIN(FLASH);
-__bootloader_dfu_end = ORIGIN(DFU) + LENGTH(DFU) - ORIGIN(FLASH);
diff --git a/embassy-boot/stm32/src/main.rs b/embassy-boot/stm32/src/main.rs
deleted file mode 100644
index 45c511ced..000000000
--- a/embassy-boot/stm32/src/main.rs
+++ /dev/null
@@ -1,46 +0,0 @@
-#![no_std]
-#![no_main]
-
-use cortex_m_rt::{entry, exception};
-#[cfg(feature = "defmt")]
-use defmt_rtt as _;
-use embassy_boot_stm32::*;
-use embassy_stm32::flash::{Flash, ERASE_SIZE};
-
-#[entry]
-fn main() -> ! {
-    let p = embassy_stm32::init(Default::default());
-
-    // Uncomment this if you are debugging the bootloader with debugger/RTT attached,
-    // as it prevents a hard fault when accessing flash 'too early' after boot.
-    /*
-        for i in 0..10000000 {
-            cortex_m::asm::nop();
-        }
-    */
-
-    let mut bl: BootLoader<ERASE_SIZE> = BootLoader::default();
-    let mut flash = Flash::unlock(p.FLASH);
-    let start = bl.prepare(&mut SingleFlashProvider::new(&mut flash));
-    core::mem::drop(flash);
-    unsafe { bl.load(start) }
-}
-
-#[no_mangle]
-#[cfg_attr(target_os = "none", link_section = ".HardFault.user")]
-unsafe extern "C" fn HardFault() {
-    cortex_m::peripheral::SCB::sys_reset();
-}
-
-#[exception]
-unsafe fn DefaultHandler(_: i16) -> ! {
-    const SCB_ICSR: *const u32 = 0xE000_ED04 as *const u32;
-    let irqn = core::ptr::read_volatile(SCB_ICSR) as u8 as i16 - 16;
-
-    panic!("DefaultHandler #{:?}", irqn);
-}
-
-#[panic_handler]
-fn panic(_info: &core::panic::PanicInfo) -> ! {
-    cortex_m::asm::udf();
-}