forked from M-Labs/artiq-zynq
szl: implemented #96
SZL no longer do self-extraction for runtime binary, it would boot from SD/ethernet depending on the boot mode settings. This allows a larger runtime binary, so we can optimize for speed in the runtime firmware for better performance, and allow more features to be added later.
This commit is contained in:
parent
653d143784
commit
ccf8ae5b5d
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@ -68,22 +68,6 @@ version = "0.3.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0f8cb7306107e4b10e64994de6d3274bd08996a7c1322a27b86482392f96be0a"
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[[package]]
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name = "cstr_core"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "edf9ff5f1182cea3b0f4269dd3edf146b5bfedc5dc8a29b95edf855f438786b7"
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dependencies = [
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"cty",
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"memchr",
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]
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[[package]]
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name = "cty"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7313c0d620d0cb4dbd9d019e461a4beb501071ff46ec0ab933efb4daa76d73e3"
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[[package]]
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name = "dwarf"
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version = "0.0.0"
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@ -471,10 +455,12 @@ dependencies = [
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name = "szl"
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version = "0.1.0"
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dependencies = [
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"cc",
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"cstr_core",
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"byteorder",
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"core_io",
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"libboard_zynq",
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"libconfig",
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"libcortex_a9",
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"libregister",
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"libsupport_zynq",
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"log",
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]
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@ -10,6 +10,16 @@ members = [
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"szl"
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]
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# Note: we are using dev profile for szl to override the opt-level only
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[profile.dev]
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panic = "abort"
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debug = true
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codegen-units = 1
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opt-level = 'z'
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lto = true
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debug-assertions = false
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overflow-checks = false
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[profile.release]
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panic = "abort"
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debug = true
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@ -17,13 +27,6 @@ codegen-units = 1
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opt-level = 's'
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lto = true
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[profile.release.package.smoltcp]
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opt-level = 2
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[profile.release.package.libasync]
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opt-level = 2
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[profile.release.package.libboard_zynq]
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opt-level = 2
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[patch.crates-io]
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core_io = { path = "./libcoreio" }
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compiler_builtins = { git = "https://git.m-labs.hk/M-Labs/compiler-builtins-zynq.git"}
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11
src/Makefile
11
src/Makefile
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@ -1,6 +1,6 @@
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VARIANT := simple
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all: ../build/firmware/armv7-none-eabihf/release/szl
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all: ../build/firmware/armv7-none-eabihf/release/szl ../build/firmware/armv7-none-eabihf/release/runtime
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.PHONY: all
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@ -11,10 +11,7 @@ all: ../build/firmware/armv7-none-eabihf/release/szl
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../build/firmware/armv7-none-eabihf/release/runtime: ../build/pl.rs ../build/rustc-cfg $(shell find . -path ./szl -prune -o -print)
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XBUILD_SYSROOT_PATH=`pwd`/../build/sysroot cargo xbuild --release -p runtime --target-dir ../build/firmware
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llvm-objcopy -O binary ../build/firmware/armv7-none-eabihf/release/runtime ../build/runtime.bin
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../build/szl-payload.bin.lzma: ../build/firmware/armv7-none-eabihf/release/runtime
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llvm-objcopy -O binary ../build/firmware/armv7-none-eabihf/release/runtime ../build/szl-payload.bin
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lzma --keep -f ../build/szl-payload.bin
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../build/firmware/armv7-none-eabihf/release/szl: .cargo/* armv7-none-eabihf.json Cargo.lock Cargo.toml szl/* szl/src/* ../build/szl-payload.bin.lzma
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XBUILD_SYSROOT_PATH=`pwd`/../build/sysroot cargo xbuild --release -p szl --target-dir ../build/firmware
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../build/firmware/armv7-none-eabihf/release/szl: .cargo/* armv7-none-eabihf.json Cargo.lock Cargo.toml szl/* szl/src/*
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XBUILD_SYSROOT_PATH=`pwd`/../build/sysroot cargo xbuild -p szl --target-dir ../build/firmware
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@ -11,10 +11,12 @@ default = ["target_zc706"]
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[dependencies]
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log = "0.4"
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cstr_core = { version = "0.2", default-features = false }
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libboard_zynq = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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libsupport_zynq = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git", default-features = false, features = ["dummy_irq_handler"] }
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libcortex_a9 = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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byteorder = { version = "1.3", default-features = false }
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core_io = { version = "0.1", features = ["collections"] }
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libconfig = { path = "../libconfig" }
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libboard_zynq = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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libsupport_zynq = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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libcortex_a9 = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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libregister = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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[build-dependencies]
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cc = { version = "1.0.1" }
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@ -1,14 +1,13 @@
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use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::{Path, PathBuf};
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use std::path::PathBuf;
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fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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let out = env::var("OUT_DIR").unwrap();
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let out_dir = &PathBuf::from(&out);
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compile_unlzma();
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// Put the linker script somewhere the linker can find it
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File::create(out_dir.join("link.x"))
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.unwrap()
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@ -21,29 +20,3 @@ fn main() {
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println!("cargo:rerun-if-changed=link.x");
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}
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pub fn compile_unlzma() {
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let cfg = &mut cc::Build::new();
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cfg.compiler("clang");
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cfg.no_default_flags(true);
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cfg.warnings(false);
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cfg.flag("-nostdlib");
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cfg.flag("-ffreestanding");
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cfg.flag("-fPIC");
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cfg.flag("-fno-stack-protector");
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cfg.flag("--target=armv7-none-eabihf");
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cfg.flag("-Oz");
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cfg.flag("-flto=full");
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let sources = vec![
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"unlzma.c",
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];
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let root = Path::new("./");
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for src in sources {
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println!("cargo:rerun-if-changed={}", src);
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cfg.file(root.join("src").join(src));
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}
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cfg.compile("unlzma");
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}
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@ -4,6 +4,7 @@ MEMORY
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{
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/* 256 kB On-Chip Memory */
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OCM : ORIGIN = 0, LENGTH = 0x30000
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SDRAM : ORIGIN = 0x00100000, LENGTH = 0x1FF00000
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OCM3 : ORIGIN = 0xFFFF0000, LENGTH = 0x10000
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}
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@ -25,6 +26,16 @@ SECTIONS
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{
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*(.data .data.*);
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} > OCM
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.heap (NOLOAD) : ALIGN(8)
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{
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__runtime_start = .;
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. += 0x8000000;
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__runtime_end = .;
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__heap0_start = .;
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. += 0x8000000;
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__heap0_end = .;
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} > SDRAM
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.bss (NOLOAD) : ALIGN(4)
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{
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@ -34,12 +45,6 @@ SECTIONS
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__bss_end = .;
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} > OCM3
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.heap (NOLOAD) : ALIGN(8)
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{
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__heap0_start = .;
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__heap0_end = .;
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} > OCM3
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.stack1 (NOLOAD) : ALIGN(8)
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{
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__stack1_end = .;
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@ -1,47 +1,66 @@
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#![no_std]
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#![no_main]
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#![feature(panic_info_message)]
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extern crate alloc;
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extern crate log;
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use core::mem;
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use log::{debug, info, error};
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use cstr_core::CStr;
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mod netboot;
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use libcortex_a9::{
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enable_fpu,
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l2c::enable_l2_cache,
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cache::{dcciall, iciallu, bpiall},
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asm::{dsb, isb},
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};
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use alloc::rc::Rc;
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use core::mem;
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use core_io::{Read, Seek};
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use libboard_zynq::{
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self as zynq, println,
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clocks::Clocks, clocks::source::{ClockSource, ArmPll, IoPll},
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stdio,
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logger,
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self as zynq,
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clocks::source::{ArmPll, ClockSource, IoPll},
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clocks::Clocks,
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logger, println, sdio, slcr,
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timer::GlobalTimer,
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};
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use libsupport_zynq as _;
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use libconfig::{bootgen, sd_reader, Config};
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use libcortex_a9::{
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asm::{dsb, isb},
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cache::{bpiall, dcciall, iciallu},
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enable_fpu,
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l2c::enable_l2_cache,
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};
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use libregister::RegisterR;
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use libsupport_zynq::ram;
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use log::info;
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extern "C" {
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fn unlzma_simple(buf: *const u8, in_len: i32,
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output: *mut u8,
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error: extern fn(*const u8)) -> i32;
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static mut __runtime_start: usize;
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static mut __runtime_end: usize;
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}
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extern fn lzma_error(message: *const u8) {
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let msg = unsafe {CStr::from_ptr(message)}.to_str();
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if let Ok(msg) = msg {
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println!("LZMA error: {}", msg);
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fn boot_sd<File: Read + Seek>(
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file: &mut Option<File>,
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runtime_start: *mut u8,
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runtime_max: usize,
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) -> Result<(), ()> {
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if file.is_none() {
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log::error!("No bootgen file");
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return Err(());
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}
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}
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let mut file = file.as_mut().unwrap();
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info!("Loading gateware");
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bootgen::load_bitstream(&mut file).map_err(|e| log::error!("Cannot load gateware: {:?}", e))?;
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#[panic_handler]
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fn panic(_: &core::panic::PanicInfo) -> ! {
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stdio::drop_uart();
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println!("panicked!");
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loop {}
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info!("Loading runtime");
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let runtime =
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bootgen::get_runtime(&mut file).map_err(|e| log::error!("Cannot load runtime: {:?}", e))?;
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if runtime.len() > runtime_max {
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log::error!(
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"Runtime binary too large, max {} but got {}",
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runtime_max,
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runtime.len()
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);
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}
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unsafe {
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let target = core::slice::from_raw_parts_mut(runtime_start, runtime.len());
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target.copy_from_slice(&runtime);
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}
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Ok(())
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}
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#[no_mangle]
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@ -50,7 +69,8 @@ pub fn main_core0() {
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enable_fpu();
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logger::init().unwrap();
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log::set_max_level(log::LevelFilter::Debug);
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println!(r#"
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println!(
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r#"
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__________ __
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/ ___/__ / / /
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@ -59,12 +79,11 @@ pub fn main_core0() {
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/____/ /____/_____/
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(C) 2020 M-Labs
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"#);
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"#
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);
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info!("Simple Zynq Loader starting...");
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enable_l2_cache();
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debug!("FPU enabled on Core0");
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const CPU_FREQ: u32 = 800_000_000;
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ArmPll::setup(2 * CPU_FREQ);
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@ -72,28 +91,73 @@ pub fn main_core0() {
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IoPll::setup(1_000_000_000);
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libboard_zynq::stdio::drop_uart(); // reinitialize UART after clocking change
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let mut ddr = zynq::ddr::DdrRam::ddrram();
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ram::init_alloc_core0();
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let payload = include_bytes!("../../../build/szl-payload.bin.lzma");
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info!("decompressing payload");
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let result = unsafe {
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unlzma_simple(payload.as_ptr(), payload.len() as i32, ddr.ptr(), lzma_error)
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};
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if result < 0 {
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error!("decompression failed");
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let sdio0 = sdio::Sdio::sdio0(true);
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let fs = if sdio0.is_card_inserted() {
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info!("Card inserted. Mounting file system.");
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let sd = sdio::sd_card::SdCard::from_sdio(sdio0).unwrap();
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let reader = sd_reader::SdReader::new(sd);
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reader
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.mount_fatfs(sd_reader::PartitionEntry::Entry1)
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.map(|v| Rc::new(v))
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.ok()
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} else {
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// Flush data cache entries for all of L1 cache, including
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// Memory/Instruction Synchronization Barriers
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dcciall();
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iciallu();
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bpiall();
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dsb();
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isb();
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info!("No SD card inserted.");
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None
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};
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let fs_ref = fs.as_ref();
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let root_dir = fs_ref.map(|fs| fs.root_dir());
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let mut bootgen_file = root_dir.and_then(|root_dir| root_dir.open_file("/BOOT.BIN").ok());
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let config = Config::from_fs(fs.clone());
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// Start core0 only, for compatibility with FSBL.
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info!("executing payload");
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unsafe {
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(mem::transmute::<*mut u8, fn()>(ddr.ptr::<u8>()))();
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}
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unsafe {
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let max_len =
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&__runtime_end as *const usize as usize - &__runtime_start as *const usize as usize;
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match slcr::RegisterBlock::unlocked(|slcr| slcr.boot_mode.read().boot_mode_pins()) {
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slcr::BootModePins::Jtag => netboot::netboot(
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&mut bootgen_file,
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config,
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&mut __runtime_start as *mut usize as *mut u8,
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max_len,
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),
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slcr::BootModePins::SdCard => {
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if boot_sd(
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&mut bootgen_file,
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&mut __runtime_start as *mut usize as *mut u8,
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max_len,
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)
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.is_err()
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{
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log::error!("Error booting from SD card");
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log::info!("Fall back on netboot");
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netboot::netboot(
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&mut bootgen_file,
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config,
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&mut __runtime_start as *mut usize as *mut u8,
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max_len,
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)
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}
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}
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v => {
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panic!("Boot mode {:?} not supported", v);
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}
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};
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}
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info!("Preparing for runtime execution");
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// Flush data cache entries for all of L1 cache, including
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// Memory/Instruction Synchronization Barriers
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dcciall();
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iciallu();
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bpiall();
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dsb();
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isb();
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// Start core0 only, for compatibility with FSBL.
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info!("executing payload");
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unsafe {
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(mem::transmute::<*mut u8, fn()>(ddr.ptr::<u8>()))();
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}
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loop {}
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|
|
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|
|
@ -0,0 +1,399 @@
|
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use alloc::vec;
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use alloc::vec::Vec;
|
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use byteorder::{ByteOrder, NetworkEndian};
|
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use core_io::{Read, Seek};
|
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use libboard_zynq::{
|
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devc,
|
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eth::Eth,
|
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smoltcp::{
|
||||
self,
|
||||
iface::{EthernetInterfaceBuilder, NeighborCache},
|
||||
time::Instant,
|
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wire::IpCidr,
|
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},
|
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timer::GlobalTimer,
|
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};
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use libconfig::{bootgen, net_settings, Config};
|
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|
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enum NetConnState {
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WaitCommand,
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FirmwareLength(usize, u8),
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FirmwareDownload(usize, usize),
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FirmwareWaitO,
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FirmwareWaitK,
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GatewareLength(usize, u8),
|
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GatewareDownload(usize, usize),
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GatewareWaitO,
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GatewareWaitK,
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}
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|
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struct NetConn {
|
||||
state: NetConnState,
|
||||
firmware_downloaded: bool,
|
||||
gateware_downloaded: bool,
|
||||
}
|
||||
|
||||
impl NetConn {
|
||||
pub fn new() -> NetConn {
|
||||
NetConn {
|
||||
state: NetConnState::WaitCommand,
|
||||
firmware_downloaded: false,
|
||||
gateware_downloaded: false,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn reset(&mut self) {
|
||||
self.state = NetConnState::WaitCommand;
|
||||
self.firmware_downloaded = false;
|
||||
self.gateware_downloaded = false;
|
||||
}
|
||||
|
||||
fn input_partial<File: Read + Seek>(
|
||||
&mut self,
|
||||
bootgen_file: &mut Option<File>,
|
||||
runtime_start: *mut u8,
|
||||
runtime_max_len: usize,
|
||||
buf: &[u8],
|
||||
storage: &mut Vec<u8>,
|
||||
mut boot_callback: impl FnMut(),
|
||||
) -> Result<usize, ()> {
|
||||
match self.state {
|
||||
NetConnState::WaitCommand => match buf[0] {
|
||||
b'F' => {
|
||||
log::info!("Received firmware load command");
|
||||
self.state = NetConnState::FirmwareLength(0, 0);
|
||||
Ok(1)
|
||||
}
|
||||
b'G' => {
|
||||
log::info!("Received gateware load command");
|
||||
self.state = NetConnState::GatewareLength(0, 0);
|
||||
storage.clear();
|
||||
Ok(1)
|
||||
}
|
||||
b'B' => {
|
||||
if !self.gateware_downloaded {
|
||||
log::info!("Gateware not loaded via netboot");
|
||||
if bootgen_file.is_none() {
|
||||
log::error!("No bootgen file to load gateware");
|
||||
return Err(());
|
||||
}
|
||||
log::info!("Attempting to load from SD card");
|
||||
if let Err(e) = bootgen::load_bitstream(bootgen_file.as_mut().unwrap()) {
|
||||
log::error!("Gateware load failed: {:?}", e);
|
||||
return Err(());
|
||||
}
|
||||
}
|
||||
if self.firmware_downloaded {
|
||||
log::info!("Received boot command");
|
||||
boot_callback();
|
||||
self.state = NetConnState::WaitCommand;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("Received boot command, but no firmware downloaded");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
_ => {
|
||||
log::error!("Received unknown netboot command: 0x{:02x}", buf[0]);
|
||||
Err(())
|
||||
}
|
||||
},
|
||||
NetConnState::FirmwareLength(firmware_length, recv_bytes) => {
|
||||
let firmware_length = (firmware_length << 8) | (buf[0] as usize);
|
||||
let recv_bytes = recv_bytes + 1;
|
||||
if recv_bytes == 4 {
|
||||
if firmware_length > runtime_max_len {
|
||||
log::error!(
|
||||
"Runtime too large, maximum {} but requested {}",
|
||||
runtime_max_len,
|
||||
firmware_length
|
||||
);
|
||||
return Err(());
|
||||
}
|
||||
self.state = NetConnState::FirmwareDownload(firmware_length, 0);
|
||||
storage.clear();
|
||||
storage.reserve(firmware_length);
|
||||
} else {
|
||||
self.state = NetConnState::FirmwareLength(firmware_length, recv_bytes);
|
||||
}
|
||||
Ok(1)
|
||||
}
|
||||
NetConnState::FirmwareDownload(firmware_length, recv_bytes) => {
|
||||
let max_length = firmware_length - recv_bytes;
|
||||
let buf = if buf.len() > max_length {
|
||||
&buf[..max_length]
|
||||
} else {
|
||||
&buf[..]
|
||||
};
|
||||
let length = buf.len();
|
||||
|
||||
storage.extend_from_slice(buf);
|
||||
|
||||
let recv_bytes = recv_bytes + length;
|
||||
if recv_bytes == firmware_length {
|
||||
self.state = NetConnState::FirmwareWaitO;
|
||||
Ok(length)
|
||||
} else {
|
||||
self.state = NetConnState::FirmwareDownload(firmware_length, recv_bytes);
|
||||
Ok(length)
|
||||
}
|
||||
}
|
||||
NetConnState::FirmwareWaitO => {
|
||||
if buf[0] == b'O' {
|
||||
self.state = NetConnState::FirmwareWaitK;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("End-of-firmware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
NetConnState::FirmwareWaitK => {
|
||||
if buf[0] == b'K' {
|
||||
log::info!("Firmware successfully downloaded");
|
||||
self.state = NetConnState::WaitCommand;
|
||||
self.firmware_downloaded = true;
|
||||
{
|
||||
let dest = unsafe {
|
||||
core::slice::from_raw_parts_mut(runtime_start, storage.len())
|
||||
};
|
||||
dest.copy_from_slice(storage);
|
||||
}
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("End-of-firmware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
|
||||
NetConnState::GatewareLength(gateware_length, recv_bytes) => {
|
||||
let gateware_length = (gateware_length << 8) | (buf[0] as usize);
|
||||
let recv_bytes = recv_bytes + 1;
|
||||
if recv_bytes == 4 {
|
||||
self.state = NetConnState::GatewareDownload(gateware_length, 0);
|
||||
storage.clear();
|
||||
storage.reserve_exact(gateware_length);
|
||||
} else {
|
||||
self.state = NetConnState::GatewareLength(gateware_length, recv_bytes);
|
||||
}
|
||||
Ok(1)
|
||||
}
|
||||
NetConnState::GatewareDownload(gateware_length, recv_bytes) => {
|
||||
let max_length = gateware_length - recv_bytes;
|
||||
let buf = if buf.len() > max_length {
|
||||
&buf[..max_length]
|
||||
} else {
|
||||
&buf[..]
|
||||
};
|
||||
let length = buf.len();
|
||||
|
||||
storage.extend_from_slice(buf);
|
||||
|
||||
let recv_bytes = recv_bytes + length;
|
||||
if recv_bytes == gateware_length {
|
||||
self.state = NetConnState::GatewareWaitO;
|
||||
Ok(length)
|
||||
} else {
|
||||
self.state = NetConnState::GatewareDownload(gateware_length, recv_bytes);
|
||||
Ok(length)
|
||||
}
|
||||
}
|
||||
NetConnState::GatewareWaitO => {
|
||||
if buf[0] == b'O' {
|
||||
self.state = NetConnState::GatewareWaitK;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("End-of-gateware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
NetConnState::GatewareWaitK => {
|
||||
if buf[0] == b'K' {
|
||||
log::info!("Preprocessing bitstream...");
|
||||
// find sync word 0xFFFFFFFF AA995566
|
||||
let sync_word: [u8; 8] = [0xFF, 0xFF, 0xFF, 0xFF, 0xAA, 0x99, 0x55, 0x66];
|
||||
let mut i = 0;
|
||||
let mut state = 0;
|
||||
while i < storage.len() {
|
||||
if storage[i] == sync_word[state] {
|
||||
state += 1;
|
||||
if state == sync_word.len() {
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
// backtrack
|
||||
// not very efficient but we only have 8 elements
|
||||
'outer: while state > 0 {
|
||||
state -= 1;
|
||||
for j in 0..state {
|
||||
if storage[i - j] != sync_word[state - j] {
|
||||
continue 'outer;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
i += 1;
|
||||
}
|
||||
if state != sync_word.len() {
|
||||
log::error!("Sync word not found in bitstream (corrupted?)");
|
||||
return Err(());
|
||||
}
|
||||
// we need the sync word
|
||||
// i was pointing to the last element in the sync sequence
|
||||
i -= sync_word.len() - 1;
|
||||
// // append no-op
|
||||
// storage.extend_from_slice(&[0x20, 0, 0, 0]);
|
||||
let bitstream = &mut storage[i..];
|
||||
{
|
||||
// swap endian
|
||||
let swap = unsafe {
|
||||
core::slice::from_raw_parts_mut(
|
||||
bitstream.as_mut_ptr() as usize as *mut u32,
|
||||
bitstream.len() / 4,
|
||||
)
|
||||
};
|
||||
NetworkEndian::from_slice_u32(swap);
|
||||
}
|
||||
unsafe {
|
||||
// align to 64 bytes
|
||||
let ptr = alloc::alloc::alloc(
|
||||
alloc::alloc::Layout::from_size_align(bitstream.len(), 64).unwrap(),
|
||||
);
|
||||
let buffer = core::slice::from_raw_parts_mut(ptr, bitstream.len());
|
||||
buffer.copy_from_slice(bitstream);
|
||||
|
||||
let mut devcfg = devc::DevC::new();
|
||||
devcfg.enable();
|
||||
let result = devcfg.program(&buffer);
|
||||
core::ptr::drop_in_place(ptr);
|
||||
if let Err(e) = result {
|
||||
log::error!("Error during FPGA startup: {}", e);
|
||||
return Err(());
|
||||
}
|
||||
}
|
||||
|
||||
log::info!("Gateware successfully downloaded");
|
||||
self.state = NetConnState::WaitCommand;
|
||||
self.gateware_downloaded = true;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::info!("End-of-gateware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn input<File: Read + Seek>(
|
||||
&mut self,
|
||||
bootgen_file: &mut Option<File>,
|
||||
runtime_start: *mut u8,
|
||||
runtime_max_len: usize,
|
||||
buf: &[u8],
|
||||
storage: &mut Vec<u8>,
|
||||
mut boot_callback: impl FnMut(),
|
||||
) -> Result<(), ()> {
|
||||
let mut remaining = &buf[..];
|
||||
while !remaining.is_empty() {
|
||||
let read_cnt = self.input_partial(
|
||||
bootgen_file,
|
||||
runtime_start,
|
||||
runtime_max_len,
|
||||
remaining,
|
||||
storage,
|
||||
&mut boot_callback,
|
||||
)?;
|
||||
remaining = &remaining[read_cnt..];
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub fn netboot<File: Read + Seek>(
|
||||
bootgen_file: &mut Option<File>,
|
||||
cfg: Config,
|
||||
runtime_start: *mut u8,
|
||||
runtime_max_len: usize,
|
||||
) {
|
||||
log::info!("Preparing network for netboot");
|
||||
let net_addresses = net_settings::get_adresses(&cfg);
|
||||
log::info!("Network addresses: {}", net_addresses);
|
||||
let eth = Eth::eth0(net_addresses.hardware_addr.0.clone());
|
||||
let eth = eth.start_rx(8);
|
||||
let mut eth = eth.start_tx(8);
|
||||
|
||||
let mut neighbor_map = [None; 2];
|
||||
let neighbor_cache = NeighborCache::new(&mut neighbor_map[..]);
|
||||
let mut ip_addrs = [IpCidr::new(net_addresses.ipv4_addr, 0)];
|
||||
let mut interface = EthernetInterfaceBuilder::new(&mut eth)
|
||||
.ethernet_addr(net_addresses.hardware_addr)
|
||||
.ip_addrs(&mut ip_addrs[..])
|
||||
.neighbor_cache(neighbor_cache)
|
||||
.finalize();
|
||||
|
||||
let mut rx_storage = vec![0; 4096];
|
||||
let mut tx_storage = vec![0; 128];
|
||||
|
||||
let mut socket_set_entries: [_; 1] = Default::default();
|
||||
let mut sockets = smoltcp::socket::SocketSet::new(&mut socket_set_entries[..]);
|
||||
|
||||
let tcp_rx_buffer = smoltcp::socket::TcpSocketBuffer::new(&mut rx_storage[..]);
|
||||
let tcp_tx_buffer = smoltcp::socket::TcpSocketBuffer::new(&mut tx_storage[..]);
|
||||
let tcp_socket = smoltcp::socket::TcpSocket::new(tcp_rx_buffer, tcp_tx_buffer);
|
||||
let tcp_handle = sockets.add(tcp_socket);
|
||||
|
||||
let mut net_conn = NetConn::new();
|
||||
let mut storage = Vec::new();
|
||||
let mut boot_flag = false;
|
||||
let timer = unsafe { GlobalTimer::get() };
|
||||
|
||||
log::info!("Waiting for connections...");
|
||||
loop {
|
||||
let timestamp = Instant::from_millis(timer.get_time().0 as i64);
|
||||
{
|
||||
let socket = &mut *sockets.get::<smoltcp::socket::TcpSocket>(tcp_handle);
|
||||
|
||||
if boot_flag {
|
||||
return;
|
||||
}
|
||||
if !socket.is_open() {
|
||||
socket.listen(4269).unwrap() // 0x10ad
|
||||
}
|
||||
|
||||
if socket.may_recv() {
|
||||
if socket
|
||||
.recv(|data| {
|
||||
(
|
||||
data.len(),
|
||||
net_conn
|
||||
.input(
|
||||
bootgen_file,
|
||||
runtime_start,
|
||||
runtime_max_len,
|
||||
data,
|
||||
&mut storage,
|
||||
|| {
|
||||
boot_flag = true;
|
||||
},
|
||||
)
|
||||
.is_err(),
|
||||
)
|
||||
})
|
||||
.unwrap()
|
||||
{
|
||||
net_conn.reset();
|
||||
socket.close();
|
||||
}
|
||||
} else if socket.may_send() {
|
||||
net_conn.reset();
|
||||
socket.close();
|
||||
}
|
||||
}
|
||||
|
||||
match interface.poll(&mut sockets, timestamp) {
|
||||
Ok(_) => (),
|
||||
Err(smoltcp::Error::Unrecognized) => (),
|
||||
Err(err) => log::error!("Network error: {}", err),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,670 +0,0 @@
|
|||
/*
|
||||
*Taken from: Lzma decompressor for Linux kernel. Shamelessly snarfed
|
||||
*from busybox 1.1.1
|
||||
*
|
||||
*Linux kernel adaptation
|
||||
*Copyright (C) 2006 Alain < alain@knaff.lu >
|
||||
*
|
||||
*Based on small lzma deflate implementation/Small range coder
|
||||
*implementation for lzma.
|
||||
*Copyright (C) 2006 Aurelien Jacobs < aurel@gnuage.org >
|
||||
*
|
||||
*Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
|
||||
*Copyright (C) 1999-2005 Igor Pavlov
|
||||
*
|
||||
*Copyrights of the parts, see headers below.
|
||||
*
|
||||
*
|
||||
*This program is free software; you can redistribute it and/or
|
||||
*modify it under the terms of the GNU Lesser General Public
|
||||
*License as published by the Free Software Foundation; either
|
||||
*version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
*This program is distributed in the hope that it will be useful,
|
||||
*but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
*Lesser General Public License for more details.
|
||||
*
|
||||
*You should have received a copy of the GNU Lesser General Public
|
||||
*License along with this library; if not, write to the Free Software
|
||||
*Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#define NULL ((void *)0)
|
||||
#define alloca(size) __builtin_alloca(size)
|
||||
#define malloc alloca
|
||||
static inline void free(void *p) {}
|
||||
|
||||
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
|
||||
|
||||
static long long read_int(unsigned char *ptr, int size)
|
||||
{
|
||||
int i;
|
||||
long long ret = 0;
|
||||
|
||||
for (i = 0; i < size; i++)
|
||||
ret = (ret << 8) | ptr[size-i-1];
|
||||
return ret;
|
||||
}
|
||||
|
||||
#define ENDIAN_CONVERT(x) \
|
||||
x = (typeof(x))read_int((unsigned char *)&x, sizeof(x))
|
||||
|
||||
|
||||
/* Small range coder implementation for lzma.
|
||||
*Copyright (C) 2006 Aurelien Jacobs < aurel@gnuage.org >
|
||||
*
|
||||
*Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
|
||||
*Copyright (c) 1999-2005 Igor Pavlov
|
||||
*/
|
||||
|
||||
#define LZMA_IOBUF_SIZE 0x10000
|
||||
|
||||
struct rc {
|
||||
int (*fill)(void*, unsigned int);
|
||||
unsigned char *ptr;
|
||||
unsigned char *buffer;
|
||||
unsigned char *buffer_end;
|
||||
int buffer_size;
|
||||
unsigned int code;
|
||||
unsigned int range;
|
||||
unsigned int bound;
|
||||
void (*error)(char *);
|
||||
};
|
||||
|
||||
|
||||
#define RC_TOP_BITS 24
|
||||
#define RC_MOVE_BITS 5
|
||||
#define RC_MODEL_TOTAL_BITS 11
|
||||
|
||||
|
||||
static int nofill(void *buffer, unsigned int len)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Called twice: once at startup and once in rc_normalize() */
|
||||
static void rc_read(struct rc *rc)
|
||||
{
|
||||
rc->buffer_size = rc->fill((char *)rc->buffer, LZMA_IOBUF_SIZE);
|
||||
if (rc->buffer_size <= 0)
|
||||
rc->error("unexpected EOF");
|
||||
rc->ptr = rc->buffer;
|
||||
rc->buffer_end = rc->buffer + rc->buffer_size;
|
||||
}
|
||||
|
||||
/* Called once */
|
||||
static inline void rc_init(struct rc *rc,
|
||||
int (*fill)(void*, unsigned int),
|
||||
unsigned char *buffer, int buffer_size)
|
||||
{
|
||||
if (fill)
|
||||
rc->fill = fill;
|
||||
else
|
||||
rc->fill = nofill;
|
||||
rc->buffer = buffer;
|
||||
rc->buffer_size = buffer_size;
|
||||
rc->buffer_end = rc->buffer + rc->buffer_size;
|
||||
rc->ptr = rc->buffer;
|
||||
|
||||
rc->code = 0;
|
||||
rc->range = 0xFFFFFFFF;
|
||||
}
|
||||
|
||||
static inline void rc_init_code(struct rc *rc)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 5; i++) {
|
||||
if (rc->ptr >= rc->buffer_end)
|
||||
rc_read(rc);
|
||||
rc->code = (rc->code << 8) | *rc->ptr++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Called twice, but one callsite is in inline'd rc_is_bit_0_helper() */
|
||||
static void rc_do_normalize(struct rc *rc)
|
||||
{
|
||||
if (rc->ptr >= rc->buffer_end)
|
||||
rc_read(rc);
|
||||
rc->range <<= 8;
|
||||
rc->code = (rc->code << 8) | *rc->ptr++;
|
||||
}
|
||||
static inline void rc_normalize(struct rc *rc)
|
||||
{
|
||||
if (rc->range < (1 << RC_TOP_BITS))
|
||||
rc_do_normalize(rc);
|
||||
}
|
||||
|
||||
/* Called 9 times */
|
||||
/* Why rc_is_bit_0_helper exists?
|
||||
*Because we want to always expose (rc->code < rc->bound) to optimizer
|
||||
*/
|
||||
static inline unsigned int rc_is_bit_0_helper(struct rc *rc, unsigned short int *p)
|
||||
{
|
||||
rc_normalize(rc);
|
||||
rc->bound = *p * (rc->range >> RC_MODEL_TOTAL_BITS);
|
||||
return rc->bound;
|
||||
}
|
||||
static inline int rc_is_bit_0(struct rc *rc, unsigned short int *p)
|
||||
{
|
||||
unsigned int t = rc_is_bit_0_helper(rc, p);
|
||||
return rc->code < t;
|
||||
}
|
||||
|
||||
/* Called ~10 times, but very small, thus inlined */
|
||||
static inline void rc_update_bit_0(struct rc *rc, unsigned short int *p)
|
||||
{
|
||||
rc->range = rc->bound;
|
||||
*p += ((1 << RC_MODEL_TOTAL_BITS) - *p) >> RC_MOVE_BITS;
|
||||
}
|
||||
static inline void rc_update_bit_1(struct rc *rc, unsigned short int *p)
|
||||
{
|
||||
rc->range -= rc->bound;
|
||||
rc->code -= rc->bound;
|
||||
*p -= *p >> RC_MOVE_BITS;
|
||||
}
|
||||
|
||||
/* Called 4 times in unlzma loop */
|
||||
static int rc_get_bit(struct rc *rc, unsigned short int *p, int *symbol)
|
||||
{
|
||||
if (rc_is_bit_0(rc, p)) {
|
||||
rc_update_bit_0(rc, p);
|
||||
*symbol *= 2;
|
||||
return 0;
|
||||
} else {
|
||||
rc_update_bit_1(rc, p);
|
||||
*symbol = *symbol * 2 + 1;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
/* Called once */
|
||||
static inline int rc_direct_bit(struct rc *rc)
|
||||
{
|
||||
rc_normalize(rc);
|
||||
rc->range >>= 1;
|
||||
if (rc->code >= rc->range) {
|
||||
rc->code -= rc->range;
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Called twice */
|
||||
static inline void
|
||||
rc_bit_tree_decode(struct rc *rc, unsigned short int *p, int num_levels, int *symbol)
|
||||
{
|
||||
int i = num_levels;
|
||||
|
||||
*symbol = 1;
|
||||
while (i--)
|
||||
rc_get_bit(rc, p + *symbol, symbol);
|
||||
*symbol -= 1 << num_levels;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Small lzma deflate implementation.
|
||||
* Copyright (C) 2006 Aurelien Jacobs < aurel@gnuage.org >
|
||||
*
|
||||
* Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
|
||||
* Copyright (C) 1999-2005 Igor Pavlov
|
||||
*/
|
||||
|
||||
|
||||
struct lzma_header {
|
||||
unsigned char pos;
|
||||
unsigned int dict_size;
|
||||
unsigned long long int dst_size;
|
||||
} __attribute__ ((packed)) ;
|
||||
|
||||
|
||||
#define LZMA_BASE_SIZE 1846
|
||||
#define LZMA_LIT_SIZE 768
|
||||
|
||||
#define LZMA_NUM_POS_BITS_MAX 4
|
||||
|
||||
#define LZMA_LEN_NUM_LOW_BITS 3
|
||||
#define LZMA_LEN_NUM_MID_BITS 3
|
||||
#define LZMA_LEN_NUM_HIGH_BITS 8
|
||||
|
||||
#define LZMA_LEN_CHOICE 0
|
||||
#define LZMA_LEN_CHOICE_2 (LZMA_LEN_CHOICE + 1)
|
||||
#define LZMA_LEN_LOW (LZMA_LEN_CHOICE_2 + 1)
|
||||
#define LZMA_LEN_MID (LZMA_LEN_LOW \
|
||||
+ (1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_LOW_BITS)))
|
||||
#define LZMA_LEN_HIGH (LZMA_LEN_MID \
|
||||
+(1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_MID_BITS)))
|
||||
#define LZMA_NUM_LEN_PROBS (LZMA_LEN_HIGH + (1 << LZMA_LEN_NUM_HIGH_BITS))
|
||||
|
||||
#define LZMA_NUM_STATES 12
|
||||
#define LZMA_NUM_LIT_STATES 7
|
||||
|
||||
#define LZMA_START_POS_MODEL_INDEX 4
|
||||
#define LZMA_END_POS_MODEL_INDEX 14
|
||||
#define LZMA_NUM_FULL_DISTANCES (1 << (LZMA_END_POS_MODEL_INDEX >> 1))
|
||||
|
||||
#define LZMA_NUM_POS_SLOT_BITS 6
|
||||
#define LZMA_NUM_LEN_TO_POS_STATES 4
|
||||
|
||||
#define LZMA_NUM_ALIGN_BITS 4
|
||||
|
||||
#define LZMA_MATCH_MIN_LEN 2
|
||||
|
||||
#define LZMA_IS_MATCH 0
|
||||
#define LZMA_IS_REP (LZMA_IS_MATCH + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
|
||||
#define LZMA_IS_REP_G0 (LZMA_IS_REP + LZMA_NUM_STATES)
|
||||
#define LZMA_IS_REP_G1 (LZMA_IS_REP_G0 + LZMA_NUM_STATES)
|
||||
#define LZMA_IS_REP_G2 (LZMA_IS_REP_G1 + LZMA_NUM_STATES)
|
||||
#define LZMA_IS_REP_0_LONG (LZMA_IS_REP_G2 + LZMA_NUM_STATES)
|
||||
#define LZMA_POS_SLOT (LZMA_IS_REP_0_LONG \
|
||||
+ (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
|
||||
#define LZMA_SPEC_POS (LZMA_POS_SLOT \
|
||||
+(LZMA_NUM_LEN_TO_POS_STATES << LZMA_NUM_POS_SLOT_BITS))
|
||||
#define LZMA_ALIGN (LZMA_SPEC_POS \
|
||||
+ LZMA_NUM_FULL_DISTANCES - LZMA_END_POS_MODEL_INDEX)
|
||||
#define LZMA_LEN_CODER (LZMA_ALIGN + (1 << LZMA_NUM_ALIGN_BITS))
|
||||
#define LZMA_REP_LEN_CODER (LZMA_LEN_CODER + LZMA_NUM_LEN_PROBS)
|
||||
#define LZMA_LITERAL (LZMA_REP_LEN_CODER + LZMA_NUM_LEN_PROBS)
|
||||
|
||||
|
||||
struct writer {
|
||||
unsigned char *buffer;
|
||||
unsigned char previous_byte;
|
||||
int buffer_pos;
|
||||
int bufsize;
|
||||
int global_pos;
|
||||
int(*flush)(void*, unsigned int);
|
||||
struct lzma_header *header;
|
||||
};
|
||||
|
||||
struct cstate {
|
||||
int state;
|
||||
unsigned int rep0, rep1, rep2, rep3;
|
||||
};
|
||||
|
||||
static inline int get_pos(struct writer *wr)
|
||||
{
|
||||
return
|
||||
wr->global_pos + wr->buffer_pos;
|
||||
}
|
||||
|
||||
static inline unsigned char peek_old_byte(struct writer *wr,
|
||||
unsigned int offs)
|
||||
{
|
||||
if (!wr->flush) {
|
||||
int pos;
|
||||
while (offs > wr->header->dict_size)
|
||||
offs -= wr->header->dict_size;
|
||||
pos = wr->buffer_pos - offs;
|
||||
return wr->buffer[pos];
|
||||
} else {
|
||||
unsigned int pos = wr->buffer_pos - offs;
|
||||
while (pos >= wr->header->dict_size)
|
||||
pos += wr->header->dict_size;
|
||||
return wr->buffer[pos];
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static inline int write_byte(struct writer *wr, unsigned char byte)
|
||||
{
|
||||
wr->buffer[wr->buffer_pos++] = wr->previous_byte = byte;
|
||||
if (wr->flush && wr->buffer_pos == wr->header->dict_size) {
|
||||
wr->buffer_pos = 0;
|
||||
wr->global_pos += wr->header->dict_size;
|
||||
if (wr->flush((char *)wr->buffer, wr->header->dict_size)
|
||||
!= wr->header->dict_size)
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static inline int copy_byte(struct writer *wr, unsigned int offs)
|
||||
{
|
||||
return write_byte(wr, peek_old_byte(wr, offs));
|
||||
}
|
||||
|
||||
static inline int copy_bytes(struct writer *wr,
|
||||
unsigned int rep0, int len)
|
||||
{
|
||||
do {
|
||||
if (copy_byte(wr, rep0))
|
||||
return -1;
|
||||
len--;
|
||||
} while (len != 0 && wr->buffer_pos < wr->header->dst_size);
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static inline int process_bit0(struct writer *wr, struct rc *rc,
|
||||
struct cstate *cst, unsigned short int *p,
|
||||
int pos_state, unsigned short int *prob,
|
||||
int lc, unsigned int literal_pos_mask) {
|
||||
int mi = 1;
|
||||
rc_update_bit_0(rc, prob);
|
||||
prob = (p + LZMA_LITERAL +
|
||||
(LZMA_LIT_SIZE
|
||||
* (((get_pos(wr) & literal_pos_mask) << lc)
|
||||
+ (wr->previous_byte >> (8 - lc))))
|
||||
);
|
||||
|
||||
if (cst->state >= LZMA_NUM_LIT_STATES) {
|
||||
int match_byte = peek_old_byte(wr, cst->rep0);
|
||||
do {
|
||||
int bit;
|
||||
unsigned short int *prob_lit;
|
||||
|
||||
match_byte <<= 1;
|
||||
bit = match_byte & 0x100;
|
||||
prob_lit = prob + 0x100 + bit + mi;
|
||||
if (rc_get_bit(rc, prob_lit, &mi)) {
|
||||
if (!bit)
|
||||
break;
|
||||
} else {
|
||||
if (bit)
|
||||
break;
|
||||
}
|
||||
} while (mi < 0x100);
|
||||
}
|
||||
while (mi < 0x100) {
|
||||
unsigned short int *prob_lit = prob + mi;
|
||||
rc_get_bit(rc, prob_lit, &mi);
|
||||
}
|
||||
if (cst->state < 4)
|
||||
cst->state = 0;
|
||||
else if (cst->state < 10)
|
||||
cst->state -= 3;
|
||||
else
|
||||
cst->state -= 6;
|
||||
|
||||
return write_byte(wr, mi);
|
||||
}
|
||||
|
||||
static inline int process_bit1(struct writer *wr, struct rc *rc,
|
||||
struct cstate *cst, unsigned short int *p,
|
||||
int pos_state, unsigned short int *prob) {
|
||||
int offset;
|
||||
unsigned short int *prob_len;
|
||||
int num_bits;
|
||||
int len;
|
||||
|
||||
rc_update_bit_1(rc, prob);
|
||||
prob = p + LZMA_IS_REP + cst->state;
|
||||
if (rc_is_bit_0(rc, prob)) {
|
||||
rc_update_bit_0(rc, prob);
|
||||
cst->rep3 = cst->rep2;
|
||||
cst->rep2 = cst->rep1;
|
||||
cst->rep1 = cst->rep0;
|
||||
cst->state = cst->state < LZMA_NUM_LIT_STATES ? 0 : 3;
|
||||
prob = p + LZMA_LEN_CODER;
|
||||
} else {
|
||||
rc_update_bit_1(rc, prob);
|
||||
prob = p + LZMA_IS_REP_G0 + cst->state;
|
||||
if (rc_is_bit_0(rc, prob)) {
|
||||
rc_update_bit_0(rc, prob);
|
||||
prob = (p + LZMA_IS_REP_0_LONG
|
||||
+ (cst->state <<
|
||||
LZMA_NUM_POS_BITS_MAX) +
|
||||
pos_state);
|
||||
if (rc_is_bit_0(rc, prob)) {
|
||||
rc_update_bit_0(rc, prob);
|
||||
|
||||
cst->state = cst->state < LZMA_NUM_LIT_STATES ?
|
||||
9 : 11;
|
||||
return copy_byte(wr, cst->rep0);
|
||||
} else {
|
||||
rc_update_bit_1(rc, prob);
|
||||
}
|
||||
} else {
|
||||
unsigned int distance;
|
||||
|
||||
rc_update_bit_1(rc, prob);
|
||||
prob = p + LZMA_IS_REP_G1 + cst->state;
|
||||
if (rc_is_bit_0(rc, prob)) {
|
||||
rc_update_bit_0(rc, prob);
|
||||
distance = cst->rep1;
|
||||
} else {
|
||||
rc_update_bit_1(rc, prob);
|
||||
prob = p + LZMA_IS_REP_G2 + cst->state;
|
||||
if (rc_is_bit_0(rc, prob)) {
|
||||
rc_update_bit_0(rc, prob);
|
||||
distance = cst->rep2;
|
||||
} else {
|
||||
rc_update_bit_1(rc, prob);
|
||||
distance = cst->rep3;
|
||||
cst->rep3 = cst->rep2;
|
||||
}
|
||||
cst->rep2 = cst->rep1;
|
||||
}
|
||||
cst->rep1 = cst->rep0;
|
||||
cst->rep0 = distance;
|
||||
}
|
||||
cst->state = cst->state < LZMA_NUM_LIT_STATES ? 8 : 11;
|
||||
prob = p + LZMA_REP_LEN_CODER;
|
||||
}
|
||||
|
||||
prob_len = prob + LZMA_LEN_CHOICE;
|
||||
if (rc_is_bit_0(rc, prob_len)) {
|
||||
rc_update_bit_0(rc, prob_len);
|
||||
prob_len = (prob + LZMA_LEN_LOW
|
||||
+ (pos_state <<
|
||||
LZMA_LEN_NUM_LOW_BITS));
|
||||
offset = 0;
|
||||
num_bits = LZMA_LEN_NUM_LOW_BITS;
|
||||
} else {
|
||||
rc_update_bit_1(rc, prob_len);
|
||||
prob_len = prob + LZMA_LEN_CHOICE_2;
|
||||
if (rc_is_bit_0(rc, prob_len)) {
|
||||
rc_update_bit_0(rc, prob_len);
|
||||
prob_len = (prob + LZMA_LEN_MID
|
||||
+ (pos_state <<
|
||||
LZMA_LEN_NUM_MID_BITS));
|
||||
offset = 1 << LZMA_LEN_NUM_LOW_BITS;
|
||||
num_bits = LZMA_LEN_NUM_MID_BITS;
|
||||
} else {
|
||||
rc_update_bit_1(rc, prob_len);
|
||||
prob_len = prob + LZMA_LEN_HIGH;
|
||||
offset = ((1 << LZMA_LEN_NUM_LOW_BITS)
|
||||
+ (1 << LZMA_LEN_NUM_MID_BITS));
|
||||
num_bits = LZMA_LEN_NUM_HIGH_BITS;
|
||||
}
|
||||
}
|
||||
|
||||
rc_bit_tree_decode(rc, prob_len, num_bits, &len);
|
||||
len += offset;
|
||||
|
||||
if (cst->state < 4) {
|
||||
int pos_slot;
|
||||
|
||||
cst->state += LZMA_NUM_LIT_STATES;
|
||||
prob =
|
||||
p + LZMA_POS_SLOT +
|
||||
((len <
|
||||
LZMA_NUM_LEN_TO_POS_STATES ? len :
|
||||
LZMA_NUM_LEN_TO_POS_STATES - 1)
|
||||
<< LZMA_NUM_POS_SLOT_BITS);
|
||||
rc_bit_tree_decode(rc, prob,
|
||||
LZMA_NUM_POS_SLOT_BITS,
|
||||
&pos_slot);
|
||||
if (pos_slot >= LZMA_START_POS_MODEL_INDEX) {
|
||||
int i, mi;
|
||||
num_bits = (pos_slot >> 1) - 1;
|
||||
cst->rep0 = 2 | (pos_slot & 1);
|
||||
if (pos_slot < LZMA_END_POS_MODEL_INDEX) {
|
||||
cst->rep0 <<= num_bits;
|
||||
prob = p + LZMA_SPEC_POS +
|
||||
cst->rep0 - pos_slot - 1;
|
||||
} else {
|
||||
num_bits -= LZMA_NUM_ALIGN_BITS;
|
||||
while (num_bits--)
|
||||
cst->rep0 = (cst->rep0 << 1) |
|
||||
rc_direct_bit(rc);
|
||||
prob = p + LZMA_ALIGN;
|
||||
cst->rep0 <<= LZMA_NUM_ALIGN_BITS;
|
||||
num_bits = LZMA_NUM_ALIGN_BITS;
|
||||
}
|
||||
i = 1;
|
||||
mi = 1;
|
||||
while (num_bits--) {
|
||||
if (rc_get_bit(rc, prob + mi, &mi))
|
||||
cst->rep0 |= i;
|
||||
i <<= 1;
|
||||
}
|
||||
} else
|
||||
cst->rep0 = pos_slot;
|
||||
if (++(cst->rep0) == 0)
|
||||
return 0;
|
||||
if (cst->rep0 > wr->header->dict_size
|
||||
|| cst->rep0 > get_pos(wr))
|
||||
return -1;
|
||||
}
|
||||
|
||||
len += LZMA_MATCH_MIN_LEN;
|
||||
|
||||
return copy_bytes(wr, cst->rep0, len);
|
||||
}
|
||||
|
||||
|
||||
|
||||
int unlzma(unsigned char *buf, int in_len,
|
||||
int(*fill)(void*, unsigned int),
|
||||
int(*flush)(void*, unsigned int),
|
||||
unsigned char *output,
|
||||
int *posp,
|
||||
void(*error)(char *x)
|
||||
)
|
||||
{
|
||||
struct lzma_header header;
|
||||
int lc, pb, lp;
|
||||
unsigned int pos_state_mask;
|
||||
unsigned int literal_pos_mask;
|
||||
unsigned short int *p;
|
||||
int num_probs;
|
||||
struct rc rc;
|
||||
int i, mi;
|
||||
struct writer wr;
|
||||
struct cstate cst;
|
||||
unsigned char *inbuf;
|
||||
int ret = -1;
|
||||
|
||||
rc.error = error;
|
||||
|
||||
if (buf)
|
||||
inbuf = buf;
|
||||
else
|
||||
inbuf = malloc(LZMA_IOBUF_SIZE);
|
||||
if (!inbuf) {
|
||||
error("Could not allocate input bufer");
|
||||
goto exit_0;
|
||||
}
|
||||
|
||||
cst.state = 0;
|
||||
cst.rep0 = cst.rep1 = cst.rep2 = cst.rep3 = 1;
|
||||
|
||||
wr.header = &header;
|
||||
wr.flush = flush;
|
||||
wr.global_pos = 0;
|
||||
wr.previous_byte = 0;
|
||||
wr.buffer_pos = 0;
|
||||
|
||||
rc_init(&rc, fill, inbuf, in_len);
|
||||
|
||||
for (i = 0; i < sizeof(header); i++) {
|
||||
if (rc.ptr >= rc.buffer_end)
|
||||
rc_read(&rc);
|
||||
((unsigned char *)&header)[i] = *rc.ptr++;
|
||||
}
|
||||
|
||||
if (header.pos >= (9 * 5 * 5)) {
|
||||
error("bad header");
|
||||
goto exit_1;
|
||||
}
|
||||
|
||||
mi = 0;
|
||||
lc = header.pos;
|
||||
while (lc >= 9) {
|
||||
mi++;
|
||||
lc -= 9;
|
||||
}
|
||||
pb = 0;
|
||||
lp = mi;
|
||||
while (lp >= 5) {
|
||||
pb++;
|
||||
lp -= 5;
|
||||
}
|
||||
pos_state_mask = (1 << pb) - 1;
|
||||
literal_pos_mask = (1 << lp) - 1;
|
||||
|
||||
ENDIAN_CONVERT(header.dict_size);
|
||||
ENDIAN_CONVERT(header.dst_size);
|
||||
|
||||
if (header.dict_size == 0)
|
||||
header.dict_size = 1;
|
||||
|
||||
if (output)
|
||||
wr.buffer = output;
|
||||
else {
|
||||
wr.bufsize = MIN(header.dst_size, header.dict_size);
|
||||
wr.buffer = malloc(wr.bufsize);
|
||||
}
|
||||
if (wr.buffer == NULL)
|
||||
goto exit_1;
|
||||
|
||||
num_probs = LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp));
|
||||
p = (unsigned short int *) malloc(num_probs * sizeof(*p));
|
||||
if (p == 0)
|
||||
goto exit_2;
|
||||
num_probs = LZMA_LITERAL + (LZMA_LIT_SIZE << (lc + lp));
|
||||
for (i = 0; i < num_probs; i++)
|
||||
p[i] = (1 << RC_MODEL_TOTAL_BITS) >> 1;
|
||||
|
||||
rc_init_code(&rc);
|
||||
|
||||
while (get_pos(&wr) < header.dst_size) {
|
||||
int pos_state = get_pos(&wr) & pos_state_mask;
|
||||
unsigned short int *prob = p + LZMA_IS_MATCH +
|
||||
(cst.state << LZMA_NUM_POS_BITS_MAX) + pos_state;
|
||||
if (rc_is_bit_0(&rc, prob)) {
|
||||
if (process_bit0(&wr, &rc, &cst, p, pos_state, prob,
|
||||
lc, literal_pos_mask)) {
|
||||
error("LZMA data is corrupt");
|
||||
goto exit_3;
|
||||
}
|
||||
} else {
|
||||
if (process_bit1(&wr, &rc, &cst, p, pos_state, prob)) {
|
||||
error("LZMA data is corrupt");
|
||||
goto exit_3;
|
||||
}
|
||||
if (cst.rep0 == 0)
|
||||
break;
|
||||
}
|
||||
if (rc.buffer_size <= 0)
|
||||
goto exit_3;
|
||||
}
|
||||
|
||||
if (posp)
|
||||
*posp = rc.ptr-rc.buffer;
|
||||
if (!wr.flush || wr.flush(wr.buffer, wr.buffer_pos) == wr.buffer_pos)
|
||||
ret = 0;
|
||||
exit_3:
|
||||
free(p);
|
||||
exit_2:
|
||||
if (!output)
|
||||
free(wr.buffer);
|
||||
exit_1:
|
||||
if (!buf)
|
||||
free(inbuf);
|
||||
exit_0:
|
||||
return ret;
|
||||
}
|
||||
|
||||
int unlzma_simple(unsigned char *buf, int in_len,
|
||||
unsigned char *output,
|
||||
void(*error)(char *x))
|
||||
{
|
||||
return unlzma(buf, in_len, NULL, NULL, output, NULL, error);
|
||||
}
|
||||
Loading…
Reference in New Issue