embassy/stm32-metapac/build.rs
2021-06-01 15:57:25 +02:00

295 lines
8.5 KiB
Rust

use regex::Regex;
use serde::Deserialize;
use std::collections::{HashMap, HashSet};
use std::env;
use std::fmt::Write as _;
use std::fs;
use std::fs::File;
use std::io::Write;
use std::path::Path;
use std::path::PathBuf;
use chiptool::{generate, ir, transform};
#[derive(Debug, Eq, PartialEq, Clone, Deserialize)]
pub struct Chip {
pub name: String,
pub family: String,
pub line: String,
pub core: String,
pub flash: u32,
pub ram: u32,
pub gpio_af: String,
pub packages: Vec<Package>,
pub peripherals: HashMap<String, Peripheral>,
pub interrupts: HashMap<String, u32>,
}
#[derive(Debug, Eq, PartialEq, Clone, Deserialize)]
pub struct Package {
pub name: String,
pub package: String,
}
#[derive(Debug, Eq, PartialEq, Clone, Deserialize)]
pub struct Peripheral {
pub address: u32,
#[serde(default)]
pub kind: Option<String>,
#[serde(default)]
pub block: Option<String>,
#[serde(default)]
pub clock: Option<String>,
}
struct BlockInfo {
module: String, // usart_v1/USART -> usart
version: String, // usart_v1/USART -> v1
block: String, // usart_v1/USART -> USART
}
impl BlockInfo {
fn parse(s: &str) -> Self {
let mut s = s.split("/");
let module = s.next().unwrap();
let block = s.next().unwrap();
assert!(s.next().is_none());
let mut s = module.split("_");
let module = s.next().unwrap();
let version = s.next().unwrap();
assert!(s.next().is_none());
Self {
module: module.to_string(),
version: version.to_string(),
block: block.to_string(),
}
}
}
fn make_table(out: &mut String, name: &str, data: &Vec<Vec<String>>) {
write!(
out,
"#[macro_export]
macro_rules! {} {{
($($pat:tt => $code:tt;)*) => {{
macro_rules! __{}_inner {{
$(($pat) => $code;)*
($_:tt) => {{}}
}}
",
name, name
)
.unwrap();
for row in data {
write!(out, " __{}_inner!(({}));\n", name, row.join(",")).unwrap();
}
write!(
out,
" }};
}}"
)
.unwrap();
}
fn main() {
let dir = "../stm32-data/data";
println!("cwd: {:?}", env::current_dir());
let chip_name = env::vars_os()
.map(|(a, _)| a.to_string_lossy().to_string())
.find(|x| x.starts_with("CARGO_FEATURE_STM32"))
.expect("No stm32xx Cargo feature enabled")
.strip_prefix("CARGO_FEATURE_")
.unwrap()
.to_ascii_uppercase();
let chip_path = Path::new(&dir)
.join("chips")
.join(&format!("{}.yaml", chip_name));
let chip = fs::read(chip_path).unwrap();
let chip: Chip = serde_yaml::from_slice(&chip).unwrap();
let mut ir = ir::IR::new();
let mut dev = ir::Device {
interrupts: Vec::new(),
peripherals: Vec::new(),
};
let mut peripheral_versions: HashMap<String, String> = HashMap::new();
let mut cfgs: HashSet<String> = HashSet::new();
let mut pin_table: Vec<Vec<String>> = Vec::new();
let mut interrupt_table: Vec<Vec<String>> = Vec::new();
let dma_base = chip
.peripherals
.get(&"DMA".to_string())
.unwrap_or_else(|| chip.peripherals.get(&"DMA1".to_string()).unwrap())
.address;
let dma_stride = 0x400;
let gpio_base = chip.peripherals.get(&"GPIOA".to_string()).unwrap().address;
let gpio_stride = 0x400;
cfgs.insert(chip.family.to_ascii_lowercase().replace("+", "plus"));
for (name, p) in &chip.peripherals {
let mut ir_peri = ir::Peripheral {
name: name.clone(),
array: None,
base_address: p.address,
block: None,
description: None,
interrupts: HashMap::new(),
};
if let Some(block) = &p.block {
let bi = BlockInfo::parse(block);
cfgs.insert(bi.module.clone());
cfgs.insert(format!("{}_{}", bi.module, bi.version));
if let Some(old_version) =
peripheral_versions.insert(bi.module.clone(), bi.version.clone())
{
if old_version != bi.version {
panic!(
"Peripheral {} has multiple versions: {} and {}",
bi.module, old_version, bi.version
);
}
}
ir_peri.block = Some(format!("{}::{}", bi.module, bi.block));
match bi.module.as_str() {
"gpio" => {
let port_letter = name.chars().skip(4).next().unwrap();
let port_num = port_letter as u32 - 'A' as u32;
assert_eq!(p.address, gpio_base + gpio_stride * port_num);
for pin_num in 0..16 {
let pin_name = format!("P{}{}", port_letter, pin_num);
pin_table.push(vec![
pin_name.clone(),
name.clone(),
port_num.to_string(),
pin_num.to_string(),
format!("EXTI{}", pin_num),
]);
}
}
"dma" => {
let dma_num = if name == "DMA" {
0
} else {
let dma_letter = name.chars().skip(3).next().unwrap();
dma_letter as u32 - '1' as u32
};
assert_eq!(p.address, dma_base + dma_stride * dma_num);
}
_ => {}
}
}
dev.peripherals.push(ir_peri);
}
for (name, &num) in &chip.interrupts {
dev.interrupts.push(ir::Interrupt {
name: name.clone(),
description: None,
value: num,
});
interrupt_table.push(vec![name.to_ascii_uppercase()]);
}
ir.devices.insert("".to_string(), dev);
let mut extra = format!(
"pub fn GPIO(n: usize) -> gpio::Gpio {{
gpio::Gpio(({} + {}*n) as _)
}}
pub fn DMA(n: usize) -> dma::Dma {{
dma::Dma(({} + {}*n) as _)
}}",
gpio_base, gpio_stride, dma_base, dma_stride,
);
let peripheral_version_table = peripheral_versions
.iter()
.map(|(kind, version)| vec![kind.clone(), version.clone()])
.collect();
make_table(&mut extra, "pins", &pin_table);
make_table(&mut extra, "interrupts", &interrupt_table);
make_table(&mut extra, "peripheral_versions", &peripheral_version_table);
for (module, version) in peripheral_versions {
println!("loading {} {}", module, version);
let regs_path = Path::new(&dir)
.join("registers")
.join(&format!("{}_{}.yaml", module, version));
let mut peri: ir::IR = serde_yaml::from_reader(File::open(regs_path).unwrap()).unwrap();
transform::expand_extends::ExpandExtends {}
.run(&mut peri)
.unwrap();
let prefix = module;
transform::map_names(&mut peri, |s, k| match k {
transform::NameKind::Block => format!("{}::{}", prefix, s),
transform::NameKind::Fieldset => format!("{}::regs::{}", prefix, s),
transform::NameKind::Enum => format!("{}::vals::{}", prefix, s),
_ => s.to_string(),
})
.unwrap();
ir.merge(peri);
}
// Cleanups!
transform::sort::Sort {}.run(&mut ir).unwrap();
transform::Sanitize {}.run(&mut ir).unwrap();
let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
let items = generate::render(&ir).unwrap();
let mut file = File::create(out.join("pac.rs")).unwrap();
let data = items.to_string().replace("] ", "]\n");
// Remove inner attributes like #![no_std]
let re = Regex::new("# *! *\\[.*\\]").unwrap();
let data = re.replace_all(&data, "");
file.write_all(data.as_bytes()).unwrap();
file.write_all(extra.as_bytes()).unwrap();
let mut device_x = String::new();
for (name, _) in &chip.interrupts {
write!(
&mut device_x,
"PROVIDE({} = DefaultHandler);\n",
name.to_ascii_uppercase()
)
.unwrap();
}
File::create(out.join("device.x"))
.unwrap()
.write_all(device_x.as_bytes())
.unwrap();
println!("cargo:rustc-link-search={}", out.display());
println!("cargo:rerun-if-changed=build.rs");
println!(
"cargo:cfgs={}",
cfgs.into_iter().collect::<Vec<_>>().join(",")
);
}