Enable measurement handoff on all production boards (#2192)

Follow-up to #2138

This PR enables the measurement token handoff on remaining Oxide boards:

- Gimlet (except rev B)
- Sidecar
- PSC
- Cosmo

See the PR comments for an exhaustive testing log!

Author: mkeeter

app/cosmo/Cargo.toml

@@ -7,6 +7,7 @@ version = "0.1.0"
 [features]
 traptrace = ["ringbuf"]
 dump = ["kern/dump"]
+measurement-handoff = ["drv-stm32h7-startup/measurement-handoff"]
 
 [dependencies]
 cortex-m = { workspace = true }

app/cosmo/base.toml

@@ -7,7 +7,8 @@ fwid = true
 [kernel]
 name = "cosmo"
 requires = {flash = 32768, ram = 8192}
-features = ["dump"]
+features = ["dump", "measurement-handoff"]
+extern-regions = ["dtcm"]
 
 [mmio]
 peripheral-region = "fmc_nor_psram_bank_1"

app/gimlet/Cargo.toml

@@ -7,6 +7,7 @@ version = "0.1.0"
 [features]
 traptrace = ["ringbuf"]
 dump = ["kern/dump"]
+measurement-handoff = ["drv-stm32h7-startup/measurement-handoff"]
 
 [dependencies]
 cortex-m = { workspace = true }

app/gimlet/rev-c.toml

@@ -2,5 +2,10 @@
 name = "gimlet-c"
 board = "gimlet-c"
 
-# Rev C is mostly identical to Rev B, but with a new name and board
+# Rev C is mostly identical to Rev B, but with a new name and board.  It also
+# supports measurement token handoff between the RoT and SP.
 inherit = "rev-b.toml"
+
+[kernel]
+features = ["measurement-handoff"]
+extern-regions = ["dtcm"]

app/gimlet/rev-d.toml

@@ -6,6 +6,12 @@ name = "gimlet-d"
 board = "gimlet-d"
 inherit = "base.toml"
 
+# Rev D supports measurement token handoff.  Rev B does not, so we can't put
+# this into `base.toml`; subsequent revisions inherit from `rev-d.toml`
+[kernel]
+features = ["measurement-handoff"]
+extern-regions = ["dtcm"]
+
 ################################################################################
 #
 # I2C2: Front/M.2 bus

app/psc/Cargo.toml

@@ -6,6 +6,7 @@ version = "0.1.0"
 
 [features]
 dump = ["kern/dump"]
+measurement-handoff = ["drv-stm32h7-startup/measurement-handoff"]
 
 [dependencies]
 cfg-if = { workspace = true }

app/psc/base.toml

@@ -7,7 +7,8 @@ fwid = true
 [kernel]
 name = "psc"
 requires = {flash = 32868, ram = 6000}
-features = ["dump"]
+features = ["dump", "measurement-handoff"]
+extern-regions = ["dtcm"]
 
 [caboose]
 tasks = ["control_plane_agent"]

app/sidecar/Cargo.toml

@@ -6,6 +6,7 @@ version = "0.1.0"
 
 [features]
 dump = ["kern/dump"]
+measurement-handoff = ["drv-stm32h7-startup/measurement-handoff"]
 
 [dependencies]
 cortex-m = { workspace = true }

app/sidecar/base.toml

@@ -7,7 +7,8 @@ fwid = true
 [kernel]
 name = "sidecar"
 requires = {flash = 26656, ram = 6256}
-features = ["dump"]
+features = ["dump", "measurement-handoff"]
+extern-regions = ["dtcm"]
 
 [caboose]
 tasks = ["control_plane_agent"]