coremgmt: implement flash

artiq/coredevice/comm_mgmt.py

@@ -1,5 +1,7 @@
 from enum import Enum
+import binascii
 import logging
+import io
 import struct
 
 from sipyco.keepalive import create_connection
@@ -23,6 +25,8 @@ class Request(Enum):
 
     DebugAllocator = 8
 
+    Flash = 9
+
 
 class Reply(Enum):
     Success = 1
@@ -46,15 +50,17 @@ class LogLevel(Enum):
 
 
 class CommMgmt:
-    def __init__(self, host, port=1380):
+    def __init__(self, host, port=1380, drtio_dest=0):
         self.host = host
         self.port = port
+        self.drtio_dest = drtio_dest
 
     def open(self):
         if hasattr(self, "socket"):
             return
         self.socket = create_connection(self.host, self.port)
         self.socket.sendall(b"ARTIQ management\n")
+        self._write_int8(self.drtio_dest)
         endian = self._read(1)
         if endian == b"e":
             self.endian = "<"
@@ -194,3 +200,45 @@ class CommMgmt:
 
     def debug_allocator(self):
         self._write_header(Request.DebugAllocator)
+
+    def flash(self, **bin_paths):
+        self._write_header(Request.Flash)
+
+        addr_table = {}
+        with io.BytesIO() as image_buf, io.BytesIO() as bin_buf:
+            offset = 0
+            # Reserve 4-bytes for CRC
+            image_buf.write(struct.pack(self.endian + "I", 0))
+            # Reserve 4-bytes for header length
+            image_buf.write(struct.pack(self.endian + "I", 0))
+            image_buf.write(struct.pack(self.endian + "I", len(bin_paths)))
+            for bin_name, filename in bin_paths.items():
+                with open(filename, "rb") as fi:
+                    bin_ = fi.read()
+                    length = bin_buf.write(bin_)
+
+                    bin_name_str = bin_name.encode("utf-8")
+                    image_buf.write(struct.pack(self.endian + "I", len(bin_name_str)))
+                    image_buf.write(bin_name_str)
+                    image_buf.write(struct.pack(self.endian + "II", offset, length))
+
+                    offset += length
+
+            # header = image_buf.getvalue()
+            # image = image_buf.getvalue()
+
+            assert(image_buf.tell() == len(image_buf.getvalue()))
+            header_len = image_buf.tell() - 8
+            image_buf.seek(4, 0)
+            image_buf.write(struct.pack(self.endian + "I", header_len))
+            image_buf.seek(0, 2)
+            image_buf.write(bin_buf.getvalue())
+
+            image_buf.seek(4, 0)
+            crc = binascii.crc32(image_buf.read())
+            image_buf.seek(0, 0)
+            image_buf.write(struct.pack(self.endian + "I", crc))
+
+            self._write_bytes(image_buf.getvalue())
+
+        self._read_expect(Reply.RebootImminent)

artiq/firmware/Cargo.lock

@@ -513,6 +513,7 @@ dependencies = [
  "board_misoc",
  "build_misoc",
  "byteorder",
+ "crc",
  "cslice",
  "dyld",
  "eh",

artiq/firmware/libboard_misoc/config.rs

@@ -259,33 +259,7 @@ mod imp {
     }
 
     pub fn write(key: &str, value: &[u8]) -> Result<(), Error> {
-        fn flash_binary(origin: usize, payload: &[u8]) {
+        match append(key, value) {
-            let mut offset = 0;
-            while offset < payload.len() {
-                unsafe {
-                    spiflash::erase_sector(origin + offset);
-                }
-                offset += spiflash::SECTOR_SIZE;
-            }
-            unsafe {
-                spiflash::write(origin, payload);
-            }
-        }
-
-        match key {
-            "gateware" => {
-                flash_binary(0, value);
-                Ok(())
-            }
-            "bootloader" => {
-                flash_binary(::mem::ROM_BASE, value);
-                Ok(())
-            }
-            "firmware" => {
-                flash_binary(::mem::FLASH_BOOT_ADDRESS, value);
-                Ok(())
-            }
-            _ => match append(key, value) {
             Err(Error::SpaceExhausted) => {
                 compact()?;
                 append(key, value)
@@ -293,7 +267,6 @@ mod imp {
             res => res
         }
     }
-    }
 
     pub fn write_int(key: &str, value: u32) -> Result<(), Error> {
         let mut buf = [0; 16];

artiq/firmware/libboard_misoc/spiflash.rs

@@ -114,6 +114,50 @@ pub unsafe fn write(mut addr: usize, mut data: &[u8]) {
     }
 }
 
+// pub unsafe fn write_image(image: &[u8]) {
+//     let image = &image[..];
+//     let actual_crc = crc32::checksum_ieee(image);
+
+//     if actual_crc == expected_crc {
+//         let mut reader = Cursor::new(header);
+//         let bin_no = reader.read_u32().unwrap() as usize;
+//         for _ in 0..bin_no {
+//             let bin_name = reader.read_string().unwrap();
+//             let offset = reader.read_u32().unwrap() as usize;
+//             let len = reader.read_u32().unwrap() as usize;
+
+//             let origin = match bin_name.as_str() {
+//                 "gateware" => 0,
+//                 "bootloader" => mem::ROM_BASE,
+//                 "firmware" => mem::FLASH_BOOT_ADDRESS,
+//                 _ => {
+//                     error!("unexpected binary component {}", bin_name);
+//                     return Ok(Reply::Error.write_to(stream)?);
+//                 }
+//             };
+
+//             unsafe {
+//                 spiflash::flash_binary(origin, &image[offset..offset+len]);
+//             }
+//         }
+
+//         reboot(_io, stream)?;
+//     } else {
+//         error!("CRC failed in SDRAM (actual {:08x}, expected {:08x})", actual_crc, expected_crc);
+//         Reply::Error.write_to(stream)?;
+//     }
+// }
+
+pub unsafe fn flash_binary(origin: usize, payload: &[u8]) {
+    assert!((origin & (SECTOR_SIZE - 1)) == 0);
+    let mut offset = 0;
+    while offset < payload.len() {
+        erase_sector(origin + offset);
+        offset += SECTOR_SIZE;
+    }
+    write(origin, payload);
+}
+
 #[cfg(any(soc_platform = "kasli", soc_platform = "kc705"))]
 pub unsafe fn reload () -> ! {
     csr::icap::iprog_write(1);

artiq/firmware/libproto_artiq/drtioaux_proto.rs

@@ -127,6 +127,21 @@ pub enum Packet {
     SubkernelException { last: bool, length: u16, data: [u8; SAT_PAYLOAD_MAX_SIZE] },
     SubkernelMessage { source: u8, destination: u8, id: u32, status: PayloadStatus, length: u16, data: [u8; MASTER_PAYLOAD_MAX_SIZE] },
     SubkernelMessageAck { destination: u8 },
+
+    CoreMgmtGetLogRequest { destination: u8, clear: bool },
+    CoreMgmtClearLogRequest { destination: u8 },
+    CoreMgmtSetLogLevelRequest { destination: u8, log_level: u8 },
+    CoreMgmtSetUartLogLevelRequest { destination: u8, log_level: u8 },
+    CoreMgmtConfigReadRequest { destination: u8, length: u16, key: [u8; MASTER_PAYLOAD_MAX_SIZE] },
+    CoreMgmtConfigReadContinue { destination: u8 },
+    CoreMgmtConfigWriteRequest { destination: u8, last: bool, length: u16, data: [u8; MASTER_PAYLOAD_MAX_SIZE] },
+    CoreMgmtConfigRemoveRequest { destination: u8, length: u16, key: [u8; MASTER_PAYLOAD_MAX_SIZE] },
+    CoreMgmtConfigEraseRequest { destination: u8 },
+    CoreMgmtRebootRequest { destination: u8 },
+    CoreMgmtAllocatorDebugRequest { destination: u8 },
+    CoreMgmtGetLogReply { last: bool, length: u16, data: [u8; SAT_PAYLOAD_MAX_SIZE] },
+    CoreMgmtConfigReadReply { last: bool, length: u16, value: [u8; SAT_PAYLOAD_MAX_SIZE] },
+    CoreMgmtReply { succeeded: bool },
 }
 
 impl Packet {
@@ -401,6 +416,94 @@ impl Packet {
                 destination: reader.read_u8()?
             },
 
+            0xd0 => Packet::CoreMgmtGetLogRequest {
+                destination: reader.read_u8()?,
+                clear: reader.read_bool()?,
+            },
+            0xd1 => Packet::CoreMgmtClearLogRequest {
+                destination: reader.read_u8()?,
+            },
+            0xd2 => Packet::CoreMgmtSetLogLevelRequest {
+                destination: reader.read_u8()?,
+                log_level: reader.read_u8()?,
+            },
+            0xd3 => Packet::CoreMgmtSetUartLogLevelRequest {
+                destination: reader.read_u8()?,
+                log_level: reader.read_u8()?,
+            },
+            0xd4 => {
+                let destination = reader.read_u8()?;
+                let length = reader.read_u16()?;
+                let mut key: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut key[0..length as usize])?;
+                Packet::CoreMgmtConfigReadRequest {
+                    destination: destination,
+                    length: length,
+                    key: key,
+                }
+            },
+            0xd5 => Packet::CoreMgmtConfigReadContinue {
+                destination: reader.read_u8()?,
+            },
+            0xd6 => {
+                let destination = reader.read_u8()?;
+                let last = reader.read_bool()?;
+                let length = reader.read_u16()?;
+                let mut data: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut data[0..length as usize])?;
+                Packet::CoreMgmtConfigWriteRequest {
+                    destination: destination,
+                    last: last,
+                    length: length,
+                    data: data,
+                }
+            },
+            0xd7 => {
+                let destination = reader.read_u8()?;
+                let length = reader.read_u16()?;
+                let mut key: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut key[0..length as usize])?;
+                Packet::CoreMgmtConfigRemoveRequest {
+                    destination: destination,
+                    length: length,
+                    key: key,
+                }
+            },
+            0xd8 => Packet::CoreMgmtConfigEraseRequest {
+                destination: reader.read_u8()?,
+            },
+            0xd9 => Packet::CoreMgmtRebootRequest {
+                destination: reader.read_u8()?,
+            },
+            0xda => Packet::CoreMgmtAllocatorDebugRequest {
+                destination: reader.read_u8()?,
+            },
+            0xdb => {
+                let last = reader.read_bool()?;
+                let length = reader.read_u16()?;
+                let mut data: [u8; SAT_PAYLOAD_MAX_SIZE] = [0; SAT_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut data[0..length as usize])?;
+                Packet::CoreMgmtGetLogReply {
+                    last: last,
+                    length: length,
+                    data: data,
+                }
+            },
+            0xdc => {
+                let last = reader.read_bool()?;
+                let length = reader.read_u16()?;
+                let mut value: [u8; SAT_PAYLOAD_MAX_SIZE] = [0; SAT_PAYLOAD_MAX_SIZE];
+                reader.read_exact(&mut value[0..length as usize])?;
+                Packet::CoreMgmtConfigReadReply {
+                    last: last,
+                    length: length,
+                    value: value,
+                }
+            },
+            0xdd => Packet::CoreMgmtReply {
+                succeeded: reader.read_bool()?,
+            },
+
             ty => return Err(Error::UnknownPacket(ty))
         })
     }
@@ -686,6 +789,90 @@ impl Packet {
                 writer.write_u8(0xcc)?;
                 writer.write_u8(destination)?;
             },
+
+            Packet::CoreMgmtGetLogRequest { destination, clear } => {
+                writer.write_u8(0xd0)?;
+                writer.write_u8(destination)?;
+                writer.write_bool(clear)?;
+            },
+            Packet::CoreMgmtClearLogRequest { destination } => {
+                writer.write_u8(0xd1)?;
+                writer.write_u8(destination)?;
+            },
+            Packet::CoreMgmtSetLogLevelRequest { destination, log_level } => {
+                writer.write_u8(0xd2)?;
+                writer.write_u8(destination)?;
+                writer.write_u8(log_level)?;
+            },
+            Packet::CoreMgmtSetUartLogLevelRequest { destination, log_level } => {
+                writer.write_u8(0xd3)?;
+                writer.write_u8(destination)?;
+                writer.write_u8(log_level)?;
+            },
+            Packet::CoreMgmtConfigReadRequest {
+                destination,
+                length,
+                key,
+            } => {
+                writer.write_u8(0xd4)?;
+                writer.write_u8(destination)?;
+                writer.write_u16(length)?;
+                writer.write_all(&key[0..length as usize])?;
+            },
+            Packet::CoreMgmtConfigReadContinue { destination } => {
+                writer.write_u8(0xd5)?;
+                writer.write_u8(destination)?;
+            },
+            Packet::CoreMgmtConfigWriteRequest {
+                destination,
+                last,
+                length,
+                data,
+            } => {
+                writer.write_u8(0xd6)?;
+                writer.write_u8(destination)?;
+                writer.write_bool(last)?;
+                writer.write_u16(length)?;
+                writer.write_all(&data[0..length as usize])?;
+            },
+            Packet::CoreMgmtConfigRemoveRequest {
+                destination,
+                length,
+                key,
+            } => {
+                writer.write_u8(0xd7)?;
+                writer.write_u8(destination)?;
+                writer.write_u16(length)?;
+                writer.write_all(&key[0..length as usize])?;
+            },
+            Packet::CoreMgmtConfigEraseRequest { destination } => {
+                writer.write_u8(0xd8)?;
+                writer.write_u8(destination)?;
+            },
+            Packet::CoreMgmtRebootRequest { destination } => {
+                writer.write_u8(0xd9)?;
+                writer.write_u8(destination)?;
+            },
+            Packet::CoreMgmtAllocatorDebugRequest { destination } => {
+                writer.write_u8(0xda)?;
+                writer.write_u8(destination)?;
+            },
+            Packet::CoreMgmtGetLogReply { last, length, data } => {
+                writer.write_u8(0xdb)?;
+                writer.write_bool(last)?;
+                writer.write_u16(length)?;
+                writer.write_all(&data[0..length as usize])?;
+            },
+            Packet::CoreMgmtConfigReadReply { last, length, value } => {
+                writer.write_u8(0xdc)?;
+                writer.write_bool(last)?;
+                writer.write_u16(length)?;
+                writer.write_all(&value[0..length as usize])?;
+            },
+            Packet::CoreMgmtReply { succeeded } => {
+                writer.write_u8(0xdd)?;
+                writer.write_bool(succeeded)?;
+            },
         }
         Ok(())
     }

artiq/firmware/libproto_artiq/mgmt_proto.rs

@@ -16,7 +16,9 @@ pub enum Error<T> {
     #[fail(display = "invalid UTF-8: {}", _0)]
     Utf8(Utf8Error),
     #[fail(display = "{}", _0)]
-    Io(#[cause] IoError<T>)
+    Io(#[cause] IoError<T>),
+    #[fail(display = "drtio error")]
+    DrtioError,
 }
 
 impl<T> From<IoError<T>> for Error<T> {
@@ -65,6 +67,8 @@ pub enum Request {
 
     Reboot,
 
+    Flash        { image: Vec<u8> },
+
     DebugAllocator,
 }
 
@@ -123,6 +127,10 @@ impl Request {
 
             8 => Request::DebugAllocator,
 
+            9 => Request::Flash {
+                image:  reader.read_bytes()?,
+            },
+
             ty => return Err(Error::UnknownPacket(ty))
         })
     }

artiq/firmware/runtime/Cargo.toml

@@ -16,6 +16,7 @@ build_misoc = { path = "../libbuild_misoc" }
 failure = { version = "0.1", default-features = false }
 failure_derive = { version = "0.1", default-features = false }
 byteorder = { version = "1.0", default-features = false }
+crc = { version = "1.7", default-features = false }
 cslice = { version = "0.3" }
 log = { version = "=0.4.14", default-features = false }
 managed = { version = "^0.7.1", default-features = false, features = ["alloc", "map"] }

artiq/firmware/runtime/main.rs

@@ -1,6 +1,7 @@
 #![feature(lang_items, panic_info_message, const_btree_new, iter_advance_by, never_type)]
 #![no_std]
 
+extern crate crc;
 extern crate dyld;
 extern crate eh;
 #[macro_use]
@@ -206,7 +207,13 @@ fn startup() {
 
     rtio_mgt::startup(&io, &aux_mutex, &drtio_routing_table, &up_destinations, &ddma_mutex, &subkernel_mutex);
 
-    io.spawn(4096, mgmt::thread);
+    {
+        let aux_mutex = aux_mutex.clone();
+        let ddma_mutex = ddma_mutex.clone();
+        let subkernel_mutex = subkernel_mutex.clone();
+        let drtio_routing_table = drtio_routing_table.clone();
+        io.spawn(4096, move |io| { mgmt::thread(io, &aux_mutex, &ddma_mutex, &subkernel_mutex, &drtio_routing_table) });
+    }
     {
         let aux_mutex = aux_mutex.clone();
         let drtio_routing_table = drtio_routing_table.clone();

artiq/firmware/runtime/mgmt.rs

@@ -1,10 +1,10 @@
-use log::{self, LevelFilter};
+use core::cell::RefCell;
 
-use io::{Write, ProtoWrite, Error as IoError};
+use board_artiq::drtio_routing;
-use board_misoc::{config, spiflash};
+use io::{ProtoRead, Write, Error as IoError};
-use logger_artiq::BufferLogger;
 use mgmt_proto::*;
-use sched::{Io, TcpListener, TcpStream, Error as SchedError};
+use sched::{Io, Mutex, TcpListener, TcpStream, Error as SchedError};
+use urc::Urc;
 
 impl From<SchedError> for Error<SchedError> {
     fn from(value: SchedError) -> Error<SchedError> {
@@ -12,29 +12,38 @@ impl From<SchedError> for Error<SchedError> {
     }
 }
 
-fn worker(io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+mod local_coremgmt {
-    read_magic(stream)?;
+    use alloc::{string::String, vec::Vec};
-    Write::write_all(stream, "e".as_bytes())?;
+    use crc::crc32;
-    info!("new connection from {}", stream.remote_endpoint());
+    use log::LevelFilter;
 
-    loop {
+    use board_misoc::{config, mem, spiflash};
-        match Request::read_from(stream)? {
+    use io::{Cursor, Write, ProtoWrite, ProtoRead, Error as IoError};
-            Request::GetLog => {
+    use logger_artiq::BufferLogger;
+    use mgmt_proto::{Error, Reply};
+    use sched::{Io, TcpStream, Error as SchedError};
+
+
+    pub fn get_log(io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
         BufferLogger::with(|logger| {
             let mut buffer = io.until_ok(|| logger.buffer())?;
             Reply::LogContent(buffer.extract()).write_to(stream)
         })?;
+        Ok(())
     }
-            Request::ClearLog => {
+
-                BufferLogger::with(|logger| -> Result<(), Error<SchedError>> {
+    pub fn clear_log(io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        BufferLogger::with(|logger| -> Result<(), IoError<SchedError>> {
             let mut buffer = io.until_ok(|| logger.buffer())?;
             Ok(buffer.clear())
         })?;
 
         Reply::Success.write_to(stream)?;
+        Ok(())
     }
-            Request::PullLog => {
+
-                BufferLogger::with(|logger| -> Result<(), Error<SchedError>> {
+    pub fn pull_log(io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        BufferLogger::with(|logger| -> Result<(), IoError<SchedError>> {
             loop {
                 // Do this *before* acquiring the buffer, since that sets the log level
                 // to OFF.
@@ -61,48 +70,59 @@ fn worker(io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
                 buffer.clear();
             }
         })?;
+        Ok(())
     }
-            Request::SetLogFilter(level) => {
+
+    pub fn set_log_filter(_io: &Io, stream: &mut TcpStream, level: LevelFilter) -> Result<(), Error<SchedError>> {
         info!("changing log level to {}", level);
         log::set_max_level(level);
         Reply::Success.write_to(stream)?;
+        Ok(())
     }
-            Request::SetUartLogFilter(level) => {
+
+    pub fn set_uart_log_filter(_io: &Io, stream: &mut TcpStream, level: LevelFilter) -> Result<(), Error<SchedError>> {
         info!("changing UART log level to {}", level);
         BufferLogger::with(|logger|
             logger.set_uart_log_level(level));
         Reply::Success.write_to(stream)?;
+        Ok(())
     }
 
-            Request::ConfigRead { ref key } => {
+    pub fn config_read(_io: &Io, stream: &mut TcpStream, key: &String) -> Result<(), Error<SchedError>>{
         config::read(key, |result| {
             match result {
                 Ok(value) => Reply::ConfigData(&value).write_to(stream),
                 Err(_)    => Reply::Error.write_to(stream)
             }
         })?;
+        Ok(())
     }
-            Request::ConfigWrite { ref key, ref value } => {
+
+    pub fn config_write(_io: &Io, stream: &mut TcpStream, key: &String, value: &Vec<u8>) -> Result<(), Error<SchedError>> {
         match config::write(key, value) {
             Ok(_)  => Reply::Success.write_to(stream),
             Err(_) => Reply::Error.write_to(stream)
         }?;
+        Ok(())
     }
-            Request::ConfigRemove { ref key } => {
+
+    pub fn config_remove(_io: &Io, stream: &mut TcpStream, key: &String) -> Result<(), Error<SchedError>> {
         match config::remove(key) {
             Ok(()) => Reply::Success.write_to(stream),
             Err(_) => Reply::Error.write_to(stream)
         }?;
-
+        Ok(())
     }
-            Request::ConfigErase => {
+
+    pub fn config_erase(_io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
         match config::erase() {
             Ok(()) => Reply::Success.write_to(stream),
             Err(_) => Reply::Error.write_to(stream)
         }?;
+        Ok(())
     }
 
-            Request::Reboot => {
+    pub fn reboot(_io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
         Reply::RebootImminent.write_to(stream)?;
         stream.close()?;
         stream.flush()?;
@@ -111,22 +131,474 @@ fn worker(io: &Io, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
         unsafe { spiflash::reload(); }
     }
 
-            Request::DebugAllocator =>
+    pub fn debug_allocator(_io: &Io, _stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
-                unsafe { println!("{}", ::ALLOC) },
+        unsafe { println!("{}", ::ALLOC) }
+        Ok(())
+    }
+
+    pub fn flash(_io: &Io, stream: &mut TcpStream, image: &Vec<u8>) -> Result<(), Error<SchedError>> {
+        let mut reader = Cursor::new(&image[..]);
+        let expected_crc = reader.read_u32().unwrap();
+
+        let image = &image[4..];
+        let actual_crc = crc32::checksum_ieee(image);
+
+        if actual_crc == expected_crc {
+            info!("Checksum matched");
+            let header_size = reader.read_u32().unwrap() as usize;
+            let header_offset = reader.position();
+            let bin_offset = header_offset + header_size;
+
+            let header = &image[header_offset..bin_offset];
+            let binaries = &image[bin_offset..];
+
+            info!("found header of size {}", header.len());
+
+            let mut reader = Cursor::new(header);
+            let bin_no = reader.read_u32().unwrap() as usize;
+            for _ in 0..bin_no {
+                let bin_name = reader.read_string().unwrap();
+                let offset = reader.read_u32().unwrap() as usize;
+                let len = reader.read_u32().unwrap() as usize;
+
+                let origin = match bin_name.as_str() {
+                    "gateware" => 0,
+                    "bootloader" => mem::ROM_BASE,
+                    "firmware" => mem::FLASH_BOOT_ADDRESS,
+                    _ => {
+                        error!("unexpected binary component {}", bin_name);
+                        return Ok(Reply::Error.write_to(stream)?);
+                    }
                 };
+
+                unsafe {
+                    spiflash::flash_binary(origin, &binaries[offset..offset+len]);
                 }
             }
 
-pub fn thread(io: Io) {
+            reboot(_io, stream)?;
+        } else {
+            error!("CRC failed in SDRAM (actual {:08x}, expected {:08x})", actual_crc, expected_crc);
+            Reply::Error.write_to(stream)?;
+        }
+        Ok(())
+    }
+}
+
+#[cfg(has_drtio)]
+mod remote_coremgmt {
+    use alloc::{string::String, vec::Vec};
+    use log::LevelFilter;
+
+    use board_artiq::{drtioaux::Packet, drtio_routing};
+    use io::{Cursor, ProtoWrite};
+    use mgmt_proto::{Error, Reply};
+    use rtio_mgt::drtio;
+    use sched::{Io, Mutex, TcpStream, Error as SchedError};
+    use proto_artiq::drtioaux_proto::MASTER_PAYLOAD_MAX_SIZE;
+
+
+    impl From<drtio::Error> for Error<SchedError> {
+        fn from(_value: drtio::Error) -> Error<SchedError> {
+            Error::DrtioError
+        }
+    }
+
+    pub fn get_log(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        let mut buffer = String::new();
+        loop {
+            let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+                &Packet::CoreMgmtGetLogRequest { destination, clear: false }
+            );
+            
+            match reply {
+                Ok(Packet::CoreMgmtGetLogReply { last, length, data }) => {
+                    buffer.push_str(
+                        core::str::from_utf8(&data[..length as usize]).map_err(|_| Error::DrtioError)?);
+                    if last {
+                        Reply::LogContent(&buffer).write_to(stream)?;
+                        return Ok(());
+                    }
+                }
+                Ok(packet) => {
+                    error!("received unexpected aux packet: {:?}", packet);
+                    Reply::Error.write_to(stream)?;
+                    return Err(drtio::Error::UnexpectedReply.into());
+                }
+                Err(e) => {
+                    error!("aux packet error ({})", e);
+                    Reply::Error.write_to(stream)?;
+                    return Err(e.into());
+                }
+            }
+        }
+    }
+
+    pub fn clear_log(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtClearLogRequest { destination }
+        );
+
+        match reply {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
+                Reply::Success.write_to(stream)?;
+                Ok(())
+            }
+            Ok(packet) => {
+                error!("received unexpected aux packet: {:?}", packet);
+                Reply::Error.write_to(stream)?;
+                Err(drtio::Error::UnexpectedReply.into())
+            }
+            Err(e) => {
+                error!("aux packet error ({})", e);
+                Reply::Error.write_to(stream)?;
+                Err(e.into())
+            }
+        }
+    }
+
+    pub fn pull_log(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        loop {
+            let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+                &Packet::CoreMgmtGetLogRequest { destination, clear: true }
+            );
+
+            match reply {
+                Ok(Packet::CoreMgmtGetLogReply { last: _, length, data }) => {
+                    stream.write_bytes(&data[..length as usize])?;
+                }
+                Ok(packet) => {
+                    error!("received unexpected aux packet: {:?}", packet);
+                    return Err(drtio::Error::UnexpectedReply.into());
+                }
+                Err(e) => {
+                    error!("aux packet error ({})", e);
+                    return Err(e.into());
+                }
+            }
+        }
+    }
+
+    pub fn set_log_filter(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream, level: LevelFilter) -> Result<(), Error<SchedError>> {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtSetLogLevelRequest { destination, log_level: level as u8 }
+        );
+
+        match reply {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
+                Reply::Success.write_to(stream)?;
+                Ok(())
+            }
+            Ok(packet) => {
+                error!("received unexpected aux packet: {:?}", packet);
+                Reply::Error.write_to(stream)?;
+                Err(drtio::Error::UnexpectedReply.into())
+            }
+            Err(e) => {
+                error!("aux packet error ({})", e);
+                Reply::Error.write_to(stream)?;
+                Err(e.into())
+            }
+        }
+    }
+
+    pub fn set_uart_log_filter(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream, level: LevelFilter) -> Result<(), Error<SchedError>> {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtSetUartLogLevelRequest { destination, log_level: level as u8 }
+        );
+
+        match reply {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
+                Reply::Success.write_to(stream)?;
+                Ok(())
+            }
+            Ok(packet) => {
+                error!("received unexpected aux packet: {:?}", packet);
+                Reply::Error.write_to(stream)?;
+                Err(drtio::Error::UnexpectedReply.into())
+            }
+            Err(e) => {
+                error!("aux packet error ({})", e);
+                Reply::Error.write_to(stream)?;
+                Err(e.into())
+            }
+        }
+    }
+
+    pub fn config_read(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream, key: &String) -> Result<(), Error<SchedError>> {
+        let mut config_key: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+        let len = key.len();
+        config_key[..len].clone_from_slice(key.as_bytes());
+
+        let mut reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtConfigReadRequest {
+                destination: destination,
+                length: len as u16,
+                key: config_key,
+            }
+        );
+
+        let mut buffer = Vec::<u8>::new();
+        loop {
+            match reply {
+                Ok(Packet::CoreMgmtConfigReadReply { length, last, value }) => {
+                    buffer.extend(&value[..length as usize]);
+
+                    if last {
+                        Reply::ConfigData(&buffer).write_to(stream)?;
+                        return Ok(());
+                    }
+
+                    reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+                        &Packet::CoreMgmtConfigReadContinue {
+                            destination: destination,
+                        }
+                    );
+                }
+                Ok(packet) => {
+                    error!("received unexpected aux packet: {:?}", packet);
+                    Reply::Error.write_to(stream)?;
+                    return Err(drtio::Error::UnexpectedReply.into());
+                }
+                Err(e) => {
+                    error!("aux packet error ({})", e);
+                    Reply::Error.write_to(stream)?;
+                    return Err(e.into());
+                }
+            }
+        }
+    }
+
+    pub fn config_write(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream, key: &String, value: &Vec<u8>) -> Result<(), Error<SchedError>> {
+        let mut message = Cursor::new(Vec::with_capacity(key.len() + value.len() + 4 * 2));
+        message.write_string(key).unwrap();
+        message.write_bytes(value).unwrap();
+
+        match drtio::partition_data(message.get_ref(), |slice, status, len: usize| {
+            let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno, 
+                &Packet::CoreMgmtConfigWriteRequest {
+                    destination: destination, length: len as u16, last: status.is_last(), data: *slice});
+            match reply {
+                Ok(Packet::CoreMgmtReply { succeeded: true }) => Ok(()),
+                Ok(packet) => {
+                    error!("received unexpected aux packet: {:?}", packet);
+                    Err(drtio::Error::UnexpectedReply)
+                }
+                Err(e) => {
+                    error!("aux packet error ({})", e);
+                    Err(e)
+                }
+            }
+        }) {
+            Ok(()) => {
+                Reply::Success.write_to(stream)?;
+                Ok(())
+            },
+            Err(e) => {
+                Reply::Error.write_to(stream)?;
+                Err(e.into())
+            },
+        }
+    }
+
+    pub fn config_remove(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream, key: &String) -> Result<(), Error<SchedError>> {
+        let mut config_key: [u8; MASTER_PAYLOAD_MAX_SIZE] = [0; MASTER_PAYLOAD_MAX_SIZE];
+        let len = key.len();
+        config_key[..len].clone_from_slice(key.as_bytes());
+
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtConfigRemoveRequest {
+                destination: destination,
+                length: key.len() as u16,
+                key: config_key,
+            });
+
+        match reply {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
+                Reply::Success.write_to(stream)?;
+                Ok(())
+            }
+            Ok(packet) => {
+                error!("received unexpected aux packet: {:?}", packet);
+                Reply::Error.write_to(stream)?;
+                Err(drtio::Error::UnexpectedReply.into())
+            }
+            Err(e) => {
+                error!("aux packet error ({})", e);
+                Reply::Error.write_to(stream)?;
+                Err(e.into())
+            }
+        }
+    }
+
+    pub fn config_erase(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtConfigEraseRequest {
+                destination: destination,
+            });
+        
+        match reply {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
+                Reply::Success.write_to(stream)?;
+                Ok(())
+            }
+            Ok(packet) => {
+                error!("received unexpected aux packet: {:?}", packet);
+                Reply::Error.write_to(stream)?;
+                Err(drtio::Error::UnexpectedReply.into())
+            }
+            Err(e) => {
+                error!("aux packet error ({})", e);
+                Reply::Error.write_to(stream)?;
+                Err(e.into())
+            }
+        }
+    }
+
+    pub fn reboot(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtRebootRequest {
+                destination: destination,
+            });
+        
+        match reply {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
+                Reply::RebootImminent.write_to(stream)?;
+                Ok(())
+            }
+            Ok(packet) => {
+                error!("received unexpected aux packet: {:?}", packet);
+                Reply::Error.write_to(stream)?;
+                Err(drtio::Error::UnexpectedReply.into())
+            }
+            Err(e) => {
+                error!("aux packet error ({})", e);
+                Reply::Error.write_to(stream)?;
+                Err(e.into())
+            }
+        }
+    }
+
+    pub fn debug_allocator(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, _stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+        let reply = drtio::aux_transact(io, aux_mutex, ddma_mutex, subkernel_mutex, routing_table, linkno,
+            &Packet::CoreMgmtAllocatorDebugRequest {
+                destination: destination,
+            });
+
+        match reply {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => Ok(()),
+            Ok(packet) => {
+                error!("received unexpected aux packet: {:?}", packet);
+                Err(drtio::Error::UnexpectedReply.into())
+            }
+            Err(e) => {
+                error!("aux packet error ({})", e);
+                Err(e.into())
+            }
+        }
+    }
+
+    pub fn flash(io: &Io, aux_mutex: &Mutex,
+        ddma_mutex: &Mutex, subkernel_mutex: &Mutex, 
+        routing_table: &drtio_routing::RoutingTable, linkno: u8,
+        destination: u8, stream: &mut TcpStream, image: &Vec<u8>) -> Result<(), Error<SchedError>> {
+        todo!()
+    }
+}
+
+#[cfg(has_drtio)]
+macro_rules! process {
+    ($io:ident, $aux_mutex:ident, $ddma_mutex:ident, $subkernel_mutex:ident, $routing_table:ident, $tcp_stream:ident, $destination: ident, $func:ident $(, $param:expr)*) => {{
+        let hop = $routing_table.0[$destination as usize][0];
+        if hop == 0 {
+            local_coremgmt::$func($io, $tcp_stream, $($param, )*)
+        } else {
+            let linkno = hop - 1;
+            remote_coremgmt::$func($io, $aux_mutex, $ddma_mutex, $subkernel_mutex, $routing_table, linkno, $destination, $tcp_stream, $($param, )*)
+        }
+    }}
+}
+
+#[cfg(not(has_drtio))]
+macro_rules! process {
+    ($io:ident, $aux_mutex:ident, $ddma_mutex:ident, $subkernel_mutex:ident, $routing_table:ident, $tcp_stream:ident, $_destination: ident, $func:ident $(, $param:expr)*) => {{
+        local_coremgmt::$func($io, $tcp_stream, $($param, )*)
+    }}
+}
+
+fn worker(io: &Io, _aux_mutex: &Mutex, _ddma_mutex: &Mutex, _subkernel_mutex: &Mutex,
+    _routing_table: &drtio_routing::RoutingTable, stream: &mut TcpStream) -> Result<(), Error<SchedError>> {
+    read_magic(stream)?;
+    let _destination = stream.read_u8()?;
+    Write::write_all(stream, "e".as_bytes())?;
+    info!("new connection from {}", stream.remote_endpoint());
+
+    loop {
+        match Request::read_from(stream)? {
+            Request::GetLog => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, get_log),
+            Request::ClearLog => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, clear_log),
+            Request::PullLog => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, pull_log),
+            Request::SetLogFilter(level) => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, set_log_filter, level),
+            Request::SetUartLogFilter(level) => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, set_uart_log_filter, level),
+            Request::ConfigRead { ref key } => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, config_read, key),
+            Request::ConfigWrite { ref key, ref value } => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, config_write, key, value),
+            Request::ConfigRemove { ref key } => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, config_remove, key),
+            Request::ConfigErase => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, config_erase),
+            Request::Reboot => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, reboot),
+            Request::DebugAllocator => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, debug_allocator),
+            Request::Flash { ref image } => process!(io, _aux_mutex, _ddma_mutex, _subkernel_mutex, _routing_table, stream, _destination, flash, image),
+        }?;
+    }
+}
+
+pub fn thread(io: Io, aux_mutex: &Mutex, ddma_mutex: &Mutex, subkernel_mutex: &Mutex, routing_table: &Urc<RefCell<drtio_routing::RoutingTable>>) {
     let listener = TcpListener::new(&io, 8192);
     listener.listen(1380).expect("mgmt: cannot listen");
     info!("management interface active");
 
     loop {
+        let aux_mutex = aux_mutex.clone();
+        let ddma_mutex = ddma_mutex.clone();
+        let subkernel_mutex = subkernel_mutex.clone();
+        let routing_table = routing_table.clone();
         let stream = listener.accept().expect("mgmt: cannot accept").into_handle();
-        io.spawn(4096, move |io| {
+        io.spawn(16384, move |io| {
+            let routing_table = routing_table.borrow();
             let mut stream = TcpStream::from_handle(&io, stream);
-            match worker(&io, &mut stream) {
+            match worker(&io, &aux_mutex, &ddma_mutex, &subkernel_mutex, &routing_table, &mut stream) {
                 Ok(()) => (),
                 Err(Error::Io(IoError::UnexpectedEnd)) => (),
                 Err(err) => error!("aborted: {}", err)

artiq/firmware/runtime/rtio_mgt.rs

@@ -469,7 +469,7 @@ pub mod drtio {
         }
     }
 
-    fn partition_data<F>(data: &[u8], send_f: F) -> Result<(), Error>
+    pub fn partition_data<F>(data: &[u8], send_f: F) -> Result<(), Error>
             where F: Fn(&[u8; MASTER_PAYLOAD_MAX_SIZE], PayloadStatus, usize) -> Result<(), Error> {
             let mut i = 0;
             while i < data.len() {

artiq/firmware/satman/main.rs

@@ -21,6 +21,7 @@ use board_artiq::si5324;
 use board_artiq::si549;
 #[cfg(soc_platform = "kasli")]
 use board_misoc::irq;
+use board_misoc::spiflash;
 use board_artiq::{spi, drtioaux, drtio_routing};
 #[cfg(soc_platform = "efc")]
 use board_artiq::ad9117;
@@ -30,6 +31,7 @@ use board_artiq::drtio_eem;
 use riscv::register::{mcause, mepc, mtval};
 use dma::Manager as DmaManager;
 use kernel::Manager as KernelManager;
+use mgmt::Manager as CoreManager;
 use analyzer::Analyzer;
 
 #[global_allocator]
@@ -41,6 +43,7 @@ mod dma;
 mod analyzer;
 mod kernel;
 mod cache;
+mod mgmt;
 
 fn drtiosat_reset(reset: bool) {
     unsafe {
@@ -129,7 +132,7 @@ macro_rules! forward {
     ($router:expr, $routing_table:expr, $destination:expr, $rank:expr, $self_destination:expr, $repeaters:expr, $packet:expr) => {}
 }
 
-fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmgr: &mut KernelManager,
+fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmgr: &mut KernelManager, coremgr: &mut CoreManager,
         _repeaters: &mut [repeater::Repeater], _routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8,
         router: &mut routing::Router, self_destination: &mut u8, packet: drtioaux::Packet
 ) -> Result<(), drtioaux::Error<!>> {
@@ -489,6 +492,94 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
             Ok(())
         }
 
+        drtioaux::Packet::CoreMgmtGetLogRequest { destination: _destination, .. } |
+        drtioaux::Packet::CoreMgmtClearLogRequest { destination: _destination } |
+        drtioaux::Packet::CoreMgmtSetLogLevelRequest {destination: _destination, .. } => {
+            forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
+
+            error!("RISC-V satellite devices do not support buffered logging");
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
+        }
+        drtioaux::Packet::CoreMgmtSetUartLogLevelRequest { destination: _destination, .. } => {
+            forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
+
+            error!("RISC-V satellite devices has fixed UART log level fixed at TRACE");
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
+        }
+        drtioaux::Packet::CoreMgmtConfigReadRequest {
+            destination: _destination,
+            length,
+            key,
+        } => {
+            forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
+
+            let mut value_slice = [0; SAT_PAYLOAD_MAX_SIZE];
+
+            let key_slice = &key[..length as usize];
+            if !key_slice.is_ascii() {
+                error!("invalid key");
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
+            } else {
+                let key = core::str::from_utf8(key_slice).unwrap();
+                if coremgr.fetch_config_value(key).is_ok() {
+                    let meta = coremgr.get_config_value_slice(&mut value_slice);
+                    drtioaux::send(
+                        0,
+                        &drtioaux::Packet::CoreMgmtConfigReadReply {
+                            length: meta.len as u16,
+                            last: meta.status.is_last(),
+                            value: value_slice,
+                        },
+                    )
+                } else {
+                    drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
+                }
+            }
+        }
+        drtioaux::Packet::CoreMgmtConfigReadContinue {
+            destination: _destination,
+        } => {
+            forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
+
+            let mut value_slice = [0; SAT_PAYLOAD_MAX_SIZE];
+            let meta = coremgr.get_config_value_slice(&mut value_slice);
+            drtioaux::send(
+                0,
+                &drtioaux::Packet::CoreMgmtConfigReadReply {
+                    length: meta.len as u16,
+                    last: meta.status.is_last(),
+                    value: value_slice,
+                },
+            )
+        }
+        drtioaux::Packet::CoreMgmtConfigWriteRequest { destination: _destination, length, last, data }  => {
+            forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
+
+            coremgr.add_data(&data, length as usize);
+            if last {
+                coremgr.write_config()
+            } else {
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: true })
+            }
+        }
+        drtioaux::Packet::CoreMgmtConfigRemoveRequest { destination: _destination, length, key } => {
+            forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
+
+            let key = core::str::from_utf8(&key[..length as usize]).unwrap();
+            let succeeded = config::remove(key)
+                .map_err(|err| warn!("error on removing config: {:?}", err))
+                .is_ok();
+
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded })
+        }
+        drtioaux::Packet::CoreMgmtRebootRequest { destination: _destination } => {
+            forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
+
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: true })?;
+            warn!("restarting");
+            unsafe { spiflash::reload(); }
+        }
+
         _ => {
             warn!("received unexpected aux packet");
             Ok(())
@@ -497,13 +588,13 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
 }
 
 fn process_aux_packets(dma_manager: &mut DmaManager, analyzer: &mut Analyzer,
-        kernelmgr: &mut KernelManager, repeaters: &mut [repeater::Repeater],
+        kernelmgr: &mut KernelManager, coremgr: &mut CoreManager, repeaters: &mut [repeater::Repeater],
         routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8, router: &mut routing::Router,
         destination: &mut u8) {
     let result =
         drtioaux::recv(0).and_then(|packet| {
             if let Some(packet) = packet.or_else(|| router.get_local_packet()) {
-                process_aux_packet(dma_manager, analyzer, kernelmgr, 
+                process_aux_packet(dma_manager, analyzer, kernelmgr, coremgr,
                     repeaters, routing_table, rank, router, destination, packet)
             } else {
                 Ok(())
@@ -823,6 +914,7 @@ pub extern fn main() -> i32 {
         let mut dma_manager = DmaManager::new();
         let mut analyzer = Analyzer::new();
         let mut kernelmgr = KernelManager::new();
+        let mut coremgr = CoreManager::new();
 
         cricon_select(RtioMaster::Drtio);
         drtioaux::reset(0);
@@ -832,7 +924,7 @@ pub extern fn main() -> i32 {
         while drtiosat_link_rx_up() {
             drtiosat_process_errors();
             process_aux_packets(&mut dma_manager, &mut analyzer, 
-                &mut kernelmgr, &mut repeaters, &mut routing_table,
+                &mut kernelmgr, &mut coremgr, &mut repeaters, &mut routing_table,
                 &mut rank, &mut router, &mut destination);
             for rep in repeaters.iter_mut() {
                 rep.service(&routing_table, rank, destination, &mut router);

artiq/firmware/satman/mgmt.rs

@@ -0,0 +1,78 @@
+use alloc::vec::Vec;
+
+use routing::{Sliceable, SliceMeta};
+use board_artiq::drtioaux;
+use board_misoc::{clock, config, csr, spiflash};
+use io::{Cursor, ProtoRead, ProtoWrite};
+use proto_artiq::drtioaux_proto::SAT_PAYLOAD_MAX_SIZE;
+
+
+pub struct Manager {
+    current_payload: Cursor<Vec<u8>>,
+    last_value: Sliceable,
+}
+
+impl Manager {
+    pub fn new() -> Manager {
+        Manager {
+            current_payload: Cursor::new(Vec::new()),
+            last_value: Sliceable::new(0, Vec::new()),
+        }
+    }
+
+    pub fn fetch_config_value(&mut self, key: &str) -> Result<(), ()> {
+        config::read(key, |result| result.map(
+            |value| self.last_value = Sliceable::new(0, value.to_vec())
+        )).map_err(|_err| warn!("read error: no such key"))
+    }
+
+    pub fn get_config_value_slice(&mut self, data_slice: &mut [u8; SAT_PAYLOAD_MAX_SIZE]) -> SliceMeta {
+        self.last_value.get_slice_sat(data_slice)
+    }
+
+    pub fn add_data(&mut self, data: &[u8], data_len: usize) {
+        self.current_payload.write_all(&data[..data_len]).unwrap();
+    }
+
+    pub fn clear_data(&mut self) {
+        self.current_payload.get_mut().clear();
+        self.current_payload.set_position(0);
+    }
+
+    pub fn write_config(&mut self) -> Result<(), drtioaux::Error<!>> {
+        let key = match self.current_payload.read_string() {
+            Ok(key) => key,
+            Err(err) => {
+                self.clear_data();
+                error!("error on reading key: {:?}", err);
+                return drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false });
+            }
+        };
+
+        let value = self.current_payload.read_bytes().unwrap();
+
+        match key.as_str() {
+            "gateware" | "bootloader" | "firmware" => {
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: true })?;
+                #[cfg(not(soc_platform = "efc"))]
+                unsafe {
+                    clock::spin_us(10000);
+                    csr::gt_drtio::txenable_write(0);
+                }
+                config::write(&key, &value).expect("failed to write to flash storage");
+                warn!("restarting");
+                unsafe { spiflash::reload(); }
+            }
+
+            _ => {
+                let succeeded = config::write(&key, &value).map_err(|err| {
+                    error!("error on writing config: {:?}", err);
+                }).is_ok();
+
+                self.clear_data();
+
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded })
+            }
+        }
+    }
+}

artiq/frontend/aqctl_corelog.py

@@ -25,6 +25,9 @@ def get_argparser():
                         help="Simulation - does not connect to device")
     parser.add_argument("core_addr", metavar="CORE_ADDR",
                         help="hostname or IP address of the core device")
+    parser.add_argument("-s", "--satellite", default=0,
+                        metavar="DRTIO_ID", type=int,
+                        help="the logged DRTIO destination")
     return parser
 
 
@@ -39,7 +42,7 @@ async def get_logs_sim(host):
         log_with_name("firmware.simulation", logging.INFO, "hello " + host)
 
 
-async def get_logs(host):
+async def get_logs(host, drtio_dest):
     try:
         reader, writer = await async_open_connection(
             host,
@@ -49,6 +52,7 @@ async def get_logs(host):
             max_fails=3,
         )
         writer.write(b"ARTIQ management\n")
+        writer.write(drtio_dest.to_bytes(1))
         endian = await reader.readexactly(1)
         if endian == b"e":
             endian = "<"
@@ -96,7 +100,7 @@ def main():
         signal_handler.setup()
         try:
             get_logs_task = asyncio.ensure_future(
-                get_logs_sim(args.core_addr) if args.simulation else get_logs(args.core_addr),
+                get_logs_sim(args.core_addr) if args.simulation else get_logs(args.core_addr, args.satellite),
                 loop=loop)
             try:
                 server = Server({"corelog": PingTarget()}, None, True)

artiq/frontend/artiq_coremgmt.py

@@ -1,7 +1,10 @@
 #!/usr/bin/env python3
 
 import argparse
+import os
 import struct
+import tempfile
+import atexit
 
 from sipyco import common_args
 
@@ -9,6 +12,8 @@ from artiq import __version__ as artiq_version
 from artiq.master.databases import DeviceDB
 from artiq.coredevice.comm_kernel import CommKernel
 from artiq.coredevice.comm_mgmt import CommMgmt
+from artiq.frontend.bit2bin import bit2bin
+from misoc.tools.mkmscimg import insert_crc
 
 
 def get_argparser():
@@ -85,6 +90,13 @@ def get_argparser():
     t_boot = tools.add_parser("reboot",
                               help="reboot the running system")
 
+    # flashing
+    t_flash = tools.add_parser("flash",
+                               help="flash the running system")
+
+    p_directory = t_flash.add_argument("directory", metavar="DIRECTORY", type=str,
+                                       help="directory that contains the binaries")
+
     # misc debug
     t_debug = tools.add_parser("debug",
                                help="specialized debug functions")
@@ -95,6 +107,11 @@ def get_argparser():
     p_allocator = subparsers.add_parser("allocator",
                                         help="show heap layout")
 
+    # manage target
+    p_drtio_dest = parser.add_argument("-s", "--satellite", default=0,
+                        metavar="DRTIO ID", type=int,
+                        help="specify DRTIO destination that receives this command")
+
     return parser
 
 
@@ -107,7 +124,7 @@ def main():
         core_addr = ddb.get("core", resolve_alias=True)["arguments"]["host"]
     else:
         core_addr = args.device
-    mgmt = CommMgmt(core_addr)
+    mgmt = CommMgmt(core_addr, drtio_dest=args.satellite)
 
     if args.tool == "log":
         if args.action == "set_level":
@@ -138,6 +155,37 @@ def main():
         if args.action == "erase":
             mgmt.config_erase()
     
+    if args.tool == "flash":
+        def convert_gateware(bit_filename):
+            bin_handle, bin_filename = tempfile.mkstemp(
+                prefix="artiq_", suffix="_" + os.path.basename(bit_filename))
+            with open(bit_filename, "rb") as bit_file, open(bin_handle, "wb") as bin_file:
+                bit2bin(bit_file, bin_file)
+            atexit.register(lambda: os.unlink(bin_filename))
+            return bin_filename
+
+        gateware = convert_gateware(os.path.join(args.directory, "top.bit"))
+        bootloader = os.path.join(args.directory, "bootloader.bin")
+
+        firmwares = []
+        for firmware in "satman", "runtime":
+            filename = os.path.join(args.directory, firmware + ".fbi")
+            if os.path.exists(filename):
+                firmwares.append(filename)
+        if not firmwares:
+            raise FileNotFoundError("no firmware found")
+        if len(firmwares) > 1:
+            raise ValueError("more than one firmware file, please clean up your build directory. "
+                "Found firmware files: {}".format(" ".join(firmwares)))
+        firmware = firmwares[0]
+
+        bins = {
+            "gateware": gateware,
+            "bootloader": bootloader,
+            "firmware": firmware,
+        }
+        mgmt.flash(**bins)
+
     if args.tool == "reboot":
         mgmt.reboot()