firmware: use libbuild_misoc in libdrtioaux. NFC.

artiq/firmware/Cargo.lock

@@ -42,6 +42,16 @@ dependencies = [
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "bootloader"
+version = "0.0.0"
+dependencies = [
+ "board 0.0.0",
+ "build_artiq 0.0.0",
+ "crc 1.6.0 (git+git://github.com/whitequark/crc-rs?rev=51cd356)",
+ "rlibc 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "build_artiq"
 version = "0.0.0"
@@ -49,6 +59,11 @@ dependencies = [
  "walkdir 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "build_const"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "build_misoc"
 version = "0.0.0"
@@ -77,6 +92,14 @@ name = "compiler_builtins"
 version = "0.1.0"
 source = "git+https://github.com/m-labs/compiler-builtins?rev=97916b1#97916b17ca542eac0524b8570c7d05913891a0dc"
 
+[[package]]
+name = "crc"
+version = "1.6.0"
+source = "git+git://github.com/whitequark/crc-rs?rev=51cd356#51cd3560aa9d3823061f2bb46797d8c61f4cfa9e"
+dependencies = [
+ "build_const 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "cslice"
 version = "0.3.0"
@@ -87,6 +110,7 @@ name = "drtioaux"
 version = "0.0.0"
 dependencies = [
  "board 0.0.0",
+ "build_misoc 0.0.0",
  "byteorder 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "std_artiq 0.0.0",
@@ -174,6 +198,11 @@ dependencies = [
  "std_artiq 0.0.0",
 ]
 
+[[package]]
+name = "rlibc"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "runtime"
 version = "0.0.0"
@@ -261,10 +290,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [metadata]
 "checksum bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b3c30d3802dfb7281680d6285f2ccdaa8c2d8fee41f93805dba5c4cf50dc23cf"
+"checksum build_const 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e90dc84f5e62d2ebe7676b83c22d33b6db8bd27340fb6ffbff0a364efa0cb9c9"
 "checksum byteorder 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "652805b7e73fada9d85e9a6682a4abd490cb52d96aeecc12e33a0de34dfd0d23"
 "checksum cc 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a9b13a57efd6b30ecd6598ebdb302cca617930b5470647570468a65d12ef9719"
 "checksum compiler_builtins 0.1.0 (git+https://github.com/m-labs/compiler-builtins?rev=97916b1)" = "<none>"
 "checksum compiler_builtins 0.1.0 (git+https://github.com/rust-lang-nursery/compiler-builtins?rev=631b568)" = "<none>"
+"checksum crc 1.6.0 (git+git://github.com/whitequark/crc-rs?rev=51cd356)" = "<none>"
 "checksum cslice 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0f8cb7306107e4b10e64994de6d3274bd08996a7c1322a27b86482392f96be0a"
 "checksum fringe 1.1.0 (git+https://github.com/m-labs/libfringe?rev=bd23494)" = "<none>"
 "checksum gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)" = "5e33ec290da0d127825013597dbdfc28bee4964690c7ce1166cbc2a7bd08b1bb"
@@ -273,6 +304,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "880f77541efa6e5cc74e76910c9884d9859683118839d6a1dc3b11e63512565b"
 "checksum log_buffer 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ec57723b84bbe7bdf76aa93169c9b59e67473317c6de3a83cb2a0f8ccb2aa493"
 "checksum managed 0.4.0 (git+https://github.com/m-labs/rust-managed.git?rev=629a6786a1cf1692015f464ed16c04eafa5cb8d1)" = "<none>"
+"checksum rlibc 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc874b127765f014d792f16763a81245ab80500e2ad921ed4ee9e82481ee08fe"
 "checksum rustc-cfg 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "56a596b5718bf5e059d59a30af12f7f462a152de147aa462b70892849ee18704"
 "checksum same-file 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d931a44fdaa43b8637009e7632a02adc4f2b2e0733c08caa4cf00e8da4a117a7"
 "checksum smoltcp 0.4.0 (git+https://github.com/m-labs/smoltcp?rev=507d2fe)" = "<none>"

artiq/firmware/Cargo.toml

@@ -1,2 +1,2 @@
 [workspace]
-members = ["runtime", "ksupport", "satman"]
+members = ["bootloader", "runtime", "ksupport", "satman"]

artiq/firmware/bootloader/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+authors = ["M-Labs"]
+name = "bootloader"
+version = "0.0.0"
+build = "build.rs"
+
+[lib]
+name = "bootloader"
+crate-type = ["staticlib"]
+path = "main.rs"
+
+[build-dependencies]
+build_artiq = { path = "../libbuild_artiq" }
+
+[dependencies]
+rlibc = "1.0"
+crc = { git = "git://github.com/whitequark/crc-rs", rev = "51cd356", default-features = false }
+board = { path = "../libboard", features = ["uart_console"] }

artiq/firmware/bootloader/Makefile

@@ -0,0 +1,18 @@
+include ../include/generated/variables.mak
+include $(MISOC_DIRECTORY)/software/common.mak
+
+RUSTFLAGS += -Cpanic=abort
+
+all:: bootloader.bin
+
+.PHONY: $(RUSTOUT)/libbootloader.a
+$(RUSTOUT)/libbootloader.a:
+	$(cargo) --manifest-path $(BOOTLOADER_DIRECTORY)/Cargo.toml -- \
+		-Clto
+
+bootloader.elf: $(RUSTOUT)/libbootloader.a
+	$(link) -T $(BOOTLOADER_DIRECTORY)/bootloader.ld
+
+%.bin: %.elf
+	$(objcopy) -O binary
+	$(MSCIMG) $@

artiq/firmware/bootloader/bootloader.ld

@@ -0,0 +1,46 @@
+INCLUDE generated/output_format.ld
+INCLUDE generated/regions.ld
+ENTRY(_reset_handler)
+
+SECTIONS
+{
+  .vectors :
+  {
+    _begin = .;
+    *(.vectors)
+  } > rom
+
+  .text :
+  {
+    *(.text .text.*)
+  } > rom
+
+  .rodata :
+  {
+    *(.rodata.*)
+    . = ALIGN(4);
+    _end = .;
+  } > rom
+
+  .crc ALIGN(4) :
+  {
+    _crc = .;
+    . += 4;
+  }
+
+  .bss ALIGN(4) :
+  {
+    _fbss = .;
+    *(.bss .bss.*)
+    . = ALIGN(4);
+    _ebss = .;
+  } > sram
+
+  .stack :
+  {
+    /* Ensure we have a certain amount of space available for stack. */
+    . = ORIGIN(sram) + LENGTH(sram) - 0x800;
+    . = ORIGIN(sram) + LENGTH(sram) - 4;
+    _fstack = .;
+  } > sram
+}

artiq/firmware/bootloader/build.rs

@@ -0,0 +1,6 @@
+extern crate build_artiq;
+
+fn main() {
+    build_artiq::misoc_cfg();
+    build_artiq::git_describe();
+}

artiq/firmware/bootloader/main.rs

@@ -0,0 +1,73 @@
+#![no_std]
+#![feature(lang_items)]
+
+extern crate rlibc;
+extern crate crc;
+#[macro_use]
+extern crate board;
+
+use core::slice;
+
+fn check_integrity() -> bool {
+    extern {
+        static _begin: u8;
+        static _end: u8;
+        static _crc: u32;
+    }
+
+    unsafe {
+        let length = &_end   as *const u8 as usize -
+                     &_begin as *const u8 as usize;
+        let bios = slice::from_raw_parts(&_begin as *const u8, length);
+        crc::crc32::checksum_ieee(bios) == _crc
+    }
+}
+
+fn initialize_sdram() -> bool {
+    unsafe {
+        board::sdram_phy::initialize();
+
+        true
+    }
+}
+
+#[no_mangle]
+pub extern fn main() -> i32 {
+    println!("");
+    println!(r"    _    ____ _____ ___ ___  ");
+    println!(r"   / \  |  _ \_   _|_ _/ _ \ ");
+    println!(r"  / _ \ | |_) || |  | | | | |");
+    println!(r" / ___ \|  _ < | |  | | |_| |");
+    println!(r"/_/   \_\_| \_\|_| |___\__\_\");
+    println!("");
+    println!("ARTIQ Bootloader");
+    println!("Copyright (c) 2017 M-Labs Limited");
+    println!("Version {}", include_str!(concat!(env!("OUT_DIR"), "/git-describe")));
+    println!("");
+
+    if !check_integrity() {
+        panic!("Bootloader CRC failed");
+    } else {
+        println!("Bootloader CRC passed");
+    }
+
+    if !initialize_sdram() {
+        panic!("SDRAM initialization failed")
+    } else {
+        println!("SDRAM initialized");
+    }
+
+    loop {}
+}
+
+#[no_mangle]
+pub extern fn exception(vect: u32, _regs: *const u32, pc: u32, ea: u32) {
+    panic!("exception {} at PC {:#08x}, EA {:#08x}", vect, pc, ea)
+}
+
+#[no_mangle]
+#[lang = "panic_fmt"]
+pub extern fn panic_fmt(args: core::fmt::Arguments, file: &'static str, line: u32) -> ! {
+    println!("panic at {}:{}: {}", file, line, args);
+    loop {}
+}

artiq/firmware/libdrtioaux/Cargo.toml

@@ -8,6 +8,9 @@ build = "build.rs"
 name = "drtioaux"
 path = "lib.rs"
 
+[build-dependencies]
+build_misoc = { path = "../libbuild_misoc" }
+
 [dependencies]
 log = { version = "0.3", default-features = false }
 std_artiq = { path = "../libstd_artiq", features = ["alloc"] }

artiq/firmware/libdrtioaux/build.rs

@@ -1,15 +1,5 @@
-use std::env;
-use std::path::Path;
-use std::io::{BufRead, BufReader};
-use std::fs::File;
+extern crate build_misoc;
 
 fn main() {
-    let out_dir = env::var("BUILDINC_DIRECTORY").unwrap();
-    let cfg_path = Path::new(&out_dir).join("generated").join("rust-cfg");
-    println!("cargo:rerun-if-changed={}", cfg_path.to_str().unwrap());
-
-    let f = BufReader::new(File::open(&cfg_path).unwrap());
-    for line in f.lines() {
-        println!("cargo:rustc-cfg={}", line.unwrap());
-    }
+    build_misoc::cfg();
 }

artiq/gateware/amp/soc.py

@@ -48,6 +48,7 @@ def build_artiq_soc(soc, argdict):
     builder = Builder(soc, **argdict)
     builder.add_software_package("libm")
     builder.add_software_package("libunwind")
+    builder.add_software_package("bootloader", os.path.join(artiq_dir, "firmware", "bootloader"))
     builder.add_software_package("ksupport", os.path.join(artiq_dir, "firmware", "ksupport"))
     builder.add_software_package("runtime", os.path.join(artiq_dir, "firmware", "runtime"))
     try: