forked from M-Labs/artiq-zynq
add support for loading bitstream from bootimage.
This commit is contained in:
parent
f9ccf908dd
commit
0dc0bb391d
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@ -15,7 +15,7 @@ let
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version = "0.1.0";
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src = ./src;
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cargoSha256 = "1xag87szccdq5zwjy3ymq5w5wzbp9vwlz4fvflz0f6wpq94mj04w";
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cargoSha256 = "0avqvaa6hryzbcy414ykzfc41hb0yifpkpfcikf9q26ay91af596";
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nativeBuildInputs = [
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pkgs.gnumake
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@ -184,7 +184,7 @@ dependencies = [
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[[package]]
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name = "libasync"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#a17a5d2925e7e521f31320ccefd7bf3cb61c45a7"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#191da7c959baeb30e31196f2c35b0790ea25cbf6"
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dependencies = [
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"embedded-hal",
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"libcortex_a9",
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@ -196,7 +196,7 @@ dependencies = [
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[[package]]
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name = "libboard_zynq"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#a17a5d2925e7e521f31320ccefd7bf3cb61c45a7"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#191da7c959baeb30e31196f2c35b0790ea25cbf6"
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dependencies = [
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"bit_field",
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"embedded-hal",
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@ -212,7 +212,7 @@ dependencies = [
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[[package]]
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name = "libcortex_a9"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#a17a5d2925e7e521f31320ccefd7bf3cb61c45a7"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#191da7c959baeb30e31196f2c35b0790ea25cbf6"
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dependencies = [
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"bit_field",
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"libregister",
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@ -221,7 +221,7 @@ dependencies = [
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[[package]]
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name = "libregister"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#a17a5d2925e7e521f31320ccefd7bf3cb61c45a7"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#191da7c959baeb30e31196f2c35b0790ea25cbf6"
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dependencies = [
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"bit_field",
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"vcell",
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@ -231,7 +231,7 @@ dependencies = [
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[[package]]
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name = "libsupport_zynq"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#a17a5d2925e7e521f31320ccefd7bf3cb61c45a7"
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source = "git+https://git.m-labs.hk/M-Labs/zc706.git#191da7c959baeb30e31196f2c35b0790ea25cbf6"
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dependencies = [
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"compiler_builtins",
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"libboard_zynq",
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@ -0,0 +1,176 @@
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use crate::sd_reader;
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use core_io::{Error, Read, Seek, SeekFrom};
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use libboard_zynq::{devc, sdio};
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use log::{info, debug};
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#[derive(Debug)]
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pub enum PlLoadingError {
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BootImageNotFound,
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InvalidBootImageHeader,
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MissingBitstreamPartition,
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EncryptedBitstream,
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IoError(Error),
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DevcError(devc::DevcError),
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}
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impl From<Error> for PlLoadingError {
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fn from(error: Error) -> Self {
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PlLoadingError::IoError(error)
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}
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}
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impl From<devc::DevcError> for PlLoadingError {
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fn from(error: devc::DevcError) -> Self {
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PlLoadingError::DevcError(error)
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}
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}
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impl core::fmt::Display for PlLoadingError {
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fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
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use PlLoadingError::*;
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match self {
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BootImageNotFound => write!(
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f,
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"Boot image not found, make sure `boot.bin` exists and your SD card is plugged in."
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),
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InvalidBootImageHeader => write!(
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f,
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"Invalid boot image header. Check if the file is correct."
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),
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MissingBitstreamPartition => write!(
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f,
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"Bitstream partition not found. Check your compile configuration."
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),
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EncryptedBitstream => write!(f, "Encrypted bitstream is not supported."),
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IoError(e) => write!(f, "Error while reading: {}", e),
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DevcError(e) => write!(f, "PCAP interface error: {}", e),
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}
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}
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}
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#[repr(C)]
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struct PartitionHeader {
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pub encrypted_length: u32,
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pub unencrypted_length: u32,
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pub word_length: u32,
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pub dest_load_addr: u32,
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pub dest_exec_addr: u32,
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pub data_offset: u32,
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pub attribute_bits: u32,
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pub section_count: u32,
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pub checksum_offset: u32,
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pub header_offset: u32,
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pub cert_offset: u32,
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pub reserved: [u32; 4],
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pub checksum: u32,
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}
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/// Read a u32 word from the reader.
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fn read_u32<Reader: Read>(reader: &mut Reader) -> Result<u32, PlLoadingError> {
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let mut buffer: [u8; 4] = [0; 4];
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reader.read_exact(&mut buffer)?;
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let mut result: u32 = 0;
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for i in 0..4 {
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result |= (buffer[i] as u32) << (i * 8);
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}
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Ok(result)
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}
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/// Load PL partition header.
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fn load_pl_header<File: Read + Seek>(
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file: &mut File,
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) -> Result<Option<PartitionHeader>, PlLoadingError> {
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let mut buffer: [u8; 0x40] = [0; 0x40];
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file.read_exact(&mut buffer)?;
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let header = unsafe { core::mem::transmute::<_, PartitionHeader>(buffer) };
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if header.attribute_bits & (2 << 4) != 0 {
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Ok(Some(header))
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} else {
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Ok(None)
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}
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}
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/// Locate the PL bitstream from the image, and return the size (in bytes) of the bitstream if successful.
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/// This function would seek the file to the location of the bitstream.
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fn locate_bitstream<File: Read + Seek>(file: &mut File) -> Result<usize, PlLoadingError> {
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const BOOT_HEADER_SIGN: u32 = 0x584C4E58;
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// read boot header signature
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file.seek(SeekFrom::Start(0x24))?;
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if read_u32(file)? != BOOT_HEADER_SIGN {
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return Err(PlLoadingError::InvalidBootImageHeader);
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}
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// read partition header offset
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file.seek(SeekFrom::Start(0x9C))?;
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let ptr = read_u32(file)?;
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debug!("Partition header pointer = {:0X}", ptr);
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file.seek(SeekFrom::Start(ptr as u64))?;
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let mut header_opt = None;
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// at most 3 partition headers
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for _ in 0..3 {
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let result = load_pl_header(file)?;
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if let Some(h) = result {
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header_opt = Some(h);
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break;
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}
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}
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let header = match header_opt {
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None => return Err(PlLoadingError::MissingBitstreamPartition),
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Some(h) => h,
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};
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let encrypted_length = header.encrypted_length;
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let unencrypted_length = header.unencrypted_length;
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debug!("Unencrypted length = {:0X}", unencrypted_length);
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if encrypted_length != unencrypted_length {
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return Err(PlLoadingError::EncryptedBitstream);
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}
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let start_addr = header.data_offset;
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debug!("Partition start address: {:0X}", start_addr);
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file.seek(SeekFrom::Start(start_addr as u64 * 4))?;
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Ok(unencrypted_length as usize * 4)
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}
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/// Load bitstream from bootgen file.
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/// This function parses the file, locate the bitstream and load it through the PCAP driver.
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/// It requires a large buffer, please enable the DDR RAM before using it.
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pub fn load_bitstream<File: Read + Seek>(
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file: &mut File,
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) -> Result<(), PlLoadingError> {
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let size = locate_bitstream(file)?;
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let mut buffer: alloc::vec::Vec<u8> = alloc::vec::Vec::with_capacity(size);
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unsafe {
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buffer.set_len(buffer.capacity());
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}
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file.read_exact(&mut buffer)?;
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let mut devcfg = devc::DevC::new();
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devcfg.enable();
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devcfg.program(&buffer)?;
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Ok(())
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}
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pub fn load_bitstream_from_sd() -> Result<(), PlLoadingError> {
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let sdio0 = sdio::SDIO::sdio0(true);
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if sdio0.is_card_inserted() {
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info!("Card inserted. Mounting file system.");
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let mut sd = sdio::sd_card::SdCard::from_sdio(sdio0).unwrap();
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let reader = sd_reader::SdReader::new(&mut sd);
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let fs = reader.mount_fatfs(sd_reader::PartitionEntry::Entry1)?;
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let root_dir = fs.root_dir();
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for entry in root_dir.iter() {
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if let Ok(entry) = entry {
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if entry.is_file() && entry.short_file_name() == "BOOT.BIN" {
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info!("Found boot image!");
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return load_bitstream(&mut entry.to_file());
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}
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}
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}
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} else {
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info!("SD card not inserted. Bitstream cannot be loaded.")
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}
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Err(PlLoadingError::BootImageNotFound)
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}
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@ -22,7 +22,7 @@ mod pl;
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mod rtio;
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mod kernel;
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mod moninj;
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mod load_pl;
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fn identifier_read(buf: &mut [u8]) -> &str {
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unsafe {
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Err(error) => info!("failed to read config: {}", error),
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}
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let devc = devc::DevC::new();
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if devc.is_done() {
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if devc::DevC::new().is_done() {
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info!("gateware already loaded");
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// Do not load again: assume that the gateware already present is
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// what we want (e.g. gateware configured via JTAG before PS
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// startup, or by FSBL).
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} else {
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info!("loading gateware");
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unimplemented!("gateware loading");
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// Load from SD card
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match load_pl::load_bitstream_from_sd() {
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Ok(_) => info!("Bitstream loaded successfully!"),
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Err(e) => info!("Failure loading bitstream: {}", e),
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}
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}
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info!("detected gateware: {}", identifier_read(&mut [0; 64]));
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@ -1,6 +1,7 @@
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use core_io::{BufRead, Error, ErrorKind, Read, Result as IoResult, Seek, SeekFrom, Write};
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use fatfs;
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use libboard_zynq::sdio::{sd_card::SdCard, CmdTransferError};
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use log::debug;
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fn cmd_error_to_io_error(_: CmdTransferError) -> Error {
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Error::new(ErrorKind::Other, "Command transfer error")
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// Read partition ID.
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self.seek(SeekFrom::Start(entry as u64 + 0x4))?;
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self.read_exact(&mut buffer[..1])?;
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debug!("Partition ID: {:0X}", buffer[0]);
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match buffer[0] {
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0x01 | 0x04 | 0x06 | 0x0B => (),
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0x01 | 0x04 | 0x06 | 0x0B | 0x0C => (),
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_ => {
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return Err(Error::new(
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ErrorKind::InvalidData,
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