Add HostFlash gateway commands

Introduce three new commands: `ReadHostFlash`, `StartHostFlashHash` and
`GetHostFlashHash`. `ReadHostFlash` is self-explanatory.
`StartHostFlashHash` starts an asynchronous calculation of a host flash
slot and `GetHostFlashHash` retrieves it when available.

Author: labbott

Cargo.lock

@@ -143,7 +143,7 @@ zip = { version = "0.6", default-features = false, features = ["bzip2", "deflate
 # Oxide forks and repos
 attest-data = { git = "https://github.com/oxidecomputer/dice-util", default-features = false, version = "0.4.0" }
 dice-mfg-msgs = { git = "https://github.com/oxidecomputer/dice-util", default-features = false, version = "0.2.1" }
-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", branch = "read_host_flash", default-features = false, features = ["smoltcp"] }
 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 }
 humpty = { git = "https://github.com/oxidecomputer/humpty", default-features = false, version = "0.1.3" }

Cargo.toml

@@ -205,6 +205,7 @@ start = true
 uses = ["mmio_spi_nor"]
 task-slots = ["hash_driver", "spartan7_loader"]
 stacksize = 4000
+notifications = ["timer"]
 
 [tasks.update_server]
 name = "stm32h7-update-server"

app/cosmo/base.toml

@@ -205,7 +205,7 @@ start = true
 uses = ["quadspi"]
 interrupts = {"quadspi.irq" = "qspi-irq"}
 task-slots = ["sys", "hash_driver"]
-notifications = ["qspi-irq"]
+notifications = ["qspi-irq", "timer"]
 
 [tasks.update_server]
 name = "stm32h7-update-server"

app/gimlet/base.toml

@@ -345,6 +345,7 @@ start = true
 uses = ["mmio_base", "mmio_spi_nor"]
 task-slots = ["hash_driver", "spartan7_loader"]
 stacksize = 4000
+notifications = ["timer"]
 
 [config.net]
 # VLAN configuration