WIP: Obtain Host Panic/Boot Failure Messages

Cargo.toml

@@ -152,7 +152,7 @@ apob = { git = "https://github.com/oxidecomputer/apob", default-features = false
 # for the migration.
 attest-data = { git = "https://github.com/oxidecomputer/dice-util", default-features = false, version = "0.4.0", rev = "a0811d06c75c757a6e12c91ed6ea81fde137ba43" }
 dice-mfg-msgs = { git = "https://github.com/oxidecomputer/dice-util", default-features = false, version = "0.2.1", rev = "a0811d06c75c757a6e12c91ed6ea81fde137ba43" }
-gateway-messages = { git = "https://github.com/oxidecomputer/management-gateway-service", default-features = false, features = ["smoltcp"] }
+gateway-messages = { git = "https://github.com/oxidecomputer/management-gateway-service", default-features = false, features = ["smoltcp"], branch = "james/host-fails" }
 gateway-ereport-messages = { git = "https://github.com/oxidecomputer/management-gateway-service", default-features = false }
 gimlet-inspector-protocol = { git = "https://github.com/oxidecomputer/gimlet-inspector-protocol", version = "0.1.0" }
 hif = { git = "https://github.com/oxidecomputer/hif", default-features = false }

app/cosmo/base.toml

@@ -132,7 +132,7 @@ notifications = ["i2c1-irq", "i2c2-irq", "i2c3-irq", "i2c4-irq"]
 [tasks.packrat]
 name = "task-packrat"
 priority = 1
-stacksize = 1400
+stacksize = 1600
 start = true
 task-slots = ["jefe"]
 features = ["cosmo", "ereport"]
@@ -258,7 +258,7 @@ features = ["stm32h753", "usart6", "baud_rate_3M", "hardware_flow_control", "vla
 uses = ["usart6", "dbgmcu"]
 interrupts = {"usart6.irq" = "usart-irq"}
 priority = 9
-max-sizes = {flash = 70000, ram = 65536}
+max-sizes = {flash = 74000, ram = 65536}
 stacksize = 5400
 start = true
 task-slots = ["sys", { cpu_seq = "cosmo_seq" }, "hf", "control_plane_agent", "net", "packrat", "i2c_driver", { spi_driver = "spi2_driver" }, "sprot", "auxflash"]

app/gimlet/base.toml

@@ -243,7 +243,7 @@ features = ["stm32h753", "uart7", "baud_rate_3M", "hardware_flow_control", "vlan
 uses = ["uart7", "dbgmcu"]
 interrupts = {"uart7.irq" = "usart-irq"}
 priority = 8
-max-sizes = {flash = 70000, ram = 65536}
+max-sizes = {flash = 74000, ram = 65536}
 stacksize = 5376
 start = true
 task-slots = ["sys", { cpu_seq = "gimlet_seq" }, "hf", "control_plane_agent", "net", "packrat", "i2c_driver", { spi_driver = "spi2_driver" }, "sprot"]

idl/packrat.idol

@@ -144,5 +144,84 @@ Interface(
             ),
             idempotent: true,
         ),
+        "write_host_bootfail": (
+            doc: "Write a host's boot failure message and return the index of this failure",
+            args: {
+                "reason": "u8",
+            },
+            leases: {
+                "data": (type: "[u8]", read: true),
+            },
+            reply: Result(
+                ok: "HostInfoWriteOutput",
+                err: ServerDeath,
+            ),
+        ),
+        "read_first_host_bootfail_fragment": (
+            doc: "Read a portion of the host's boot failure message",
+            args: {
+            },
+            leases: {
+                "data": (type: "[u8]", write: true),
+            },
+            reply: Result(
+                ok: "HostBootfailReadOutput",
+                err: CLike("HostInfoReadError"),
+            ),
+            idempotent: true,
+        ),
+        "read_host_bootfail_fragment": (
+            doc: "Read a portion of the host's boot failure message",
+            args: {
+                "request": "HostInfoRequest",
+            },
+            leases: {
+                "data": (type: "[u8]", write: true),
+            },
+            reply: Result(
+                ok: "HostBootfailReadOutput",
+                err: CLike("HostInfoReadError"),
+            ),
+            idempotent: true,
+        ),
+        "write_host_panic": (
+            doc: "Write a host's panic message and return the index of this panic",
+            args: {
+            },
+            leases: {
+                "data": (type: "[u8]", read: true),
+            },
+            reply: Result(
+                ok: "HostInfoWriteOutput",
+                err: ServerDeath,
+            ),
+        ),
+        "read_first_host_panic_fragment": (
+            doc: "Read a portion of the host's panic message",
+            args: {
+            },
+            leases: {
+                "data": (type: "[u8]", write: true),
+            },
+            reply: Result(
+                ok: "HostPanicReadOutput",
+                err: CLike("HostInfoReadError"),
+            ),
+            idempotent: true,
+        ),
+        "read_host_panic_fragment": (
+            doc: "Read a portion of the host's panic message",
+            args: {
+                "request": "HostInfoRequest",
+            },
+            leases: {
+                "data": (type: "[u8]", write: true),
+            },
+            reply: Result(
+                ok: "HostPanicReadOutput",
+                err: CLike("HostInfoReadError"),
+            ),
+            idempotent: true,
+        ),
     },
 )

task/control-plane-agent/src/mgs_compute_sled.rs

@@ -17,7 +17,8 @@ use gateway_messages::sp_impl::{
 use gateway_messages::{
     ApobComponentAction, ComponentAction, ComponentActionResponse,
     ComponentDetails, ComponentUpdatePrepare, DiscoverResponse, DumpSegment,
-    DumpTask, GpioToggleCount, Header, IgnitionCommand, IgnitionState,
+    DumpTask, GpioToggleCount, Header, HostBootfailPayloadData,
+    HostInfoRequest, HostPanicPayloadData, IgnitionCommand, IgnitionState,
     LastPostCode, Message, MessageKind, MgsError, MgsRequest, MgsResponse,
     PostCode, PowerState, PowerStateTransition, RotBootInfo, RotRequest,
     RotResponse, SERIAL_CONSOLE_IDLE_TIMEOUT, SensorRequest, SensorResponse,
@@ -1259,6 +1260,101 @@ impl SpHandler for MgsHandler {
         }));
         self.host_flash_update.get_hash(slot)
     }
+
+    fn get_host_panic_payload(
+        &mut self,
+        request: Option<HostInfoRequest>,
+        len: u32,
+        trailing_tx_buf: &mut [u8],
+    ) -> Result<HostPanicPayloadData, SpError> {
+        let max_len_usize = len as usize;
+        let max_len_usize = max_len_usize.min(trailing_tx_buf.len());
+        let dest = &mut trailing_tx_buf[..max_len_usize];
+
+        let res = if let Some(req) = request {
+            self.common.packrat().read_host_panic_fragment(
+                task_packrat_api::HostInfoRequest {
+                    offset: req.offset,
+                    index: req.index,
+                },
+                dest,
+            )
+        } else {
+            self.common.packrat().read_first_host_panic_fragment(dest)
+        };
+
+        let info = res.map_err(|e| {
+            SpError::HostPanic(match e {
+                task_packrat_api::HostInfoReadError::NoHostInfo => {
+                    gateway_messages::HostPanicError::NoHostInfo
+                }
+                task_packrat_api::HostInfoReadError::InvalidOffset => {
+                    gateway_messages::HostPanicError::InvalidOffset
+                }
+                task_packrat_api::HostInfoReadError::InvalidIndex => {
+                    gateway_messages::HostPanicError::InvalidIndex
+                }
+                task_packrat_api::HostInfoReadError::ServerRestarted => {
+                    gateway_messages::HostPanicError::ServerRestarted
+                }
+            })
+        })?;
+
+        Ok(HostPanicPayloadData {
+            index: info.index,
+            len: info.read,
+            total_len: info.total_len as u32,
+        })
+    }
+
+    fn get_host_bootfail_payload(
+        &mut self,
+        request: Option<HostInfoRequest>,
+        len: u32,
+        trailing_tx_buf: &mut [u8],
+    ) -> Result<HostBootfailPayloadData, SpError> {
+        let max_len_usize = len as usize;
+        let max_len_usize = max_len_usize.min(trailing_tx_buf.len());
+        let dest = &mut trailing_tx_buf[..max_len_usize];
+
+        let res = if let Some(req) = request {
+            self.common.packrat().read_host_bootfail_fragment(
+                task_packrat_api::HostInfoRequest {
+                    offset: req.offset,
+                    index: req.index,
+                },
+                dest,
+            )
+        } else {
+            self.common
+                .packrat()
+                .read_first_host_bootfail_fragment(dest)
+        };
+
+        let info = res.map_err(|e| {
+            SpError::HostBootfail(match e {
+                task_packrat_api::HostInfoReadError::NoHostInfo => {
+                    gateway_messages::HostBootfailError::NoHostInfo
+                }
+                task_packrat_api::HostInfoReadError::InvalidOffset => {
+                    gateway_messages::HostBootfailError::InvalidOffset
+                }
+                task_packrat_api::HostInfoReadError::InvalidIndex => {
+                    gateway_messages::HostBootfailError::InvalidIndex
+                }
+                task_packrat_api::HostInfoReadError::ServerRestarted => {
+                    gateway_messages::HostBootfailError::ServerRestarted
+                }
+            })
+        })?;
+
+        Ok(HostBootfailPayloadData {
+            index: info.index,
+            len: info.read,
+            total_len: info.total_len as u32,
+            reason: info.reason,
+        })
+    }
 }
 
 struct UsartHandler {

task/host-sp-comms/Cargo.toml

@@ -48,6 +48,10 @@ task-sensor-api = { path = "../../task/sensor-api", optional = true, features =
 ksz8463 = { path = "../../drv/ksz8463", optional = true }
 drv-sprot-api = { path = "../../drv/sprot-api"}
 
+# ereports deps
+ereports = { path = "../../lib/ereports", features = ["ereporter-macro"] }
+microcbor = { path = "../../lib/microcbor" }
+
 [build-dependencies]
 build-util.path = "../../build/util"
 build-i2c = { path = "../../build/i2c", optional = true }