hiffy: Remove 'rng' feature.

Fixup app.toml files for boards that were still enabling this feature.

Author: flihp

Cargo.lock

@@ -120,12 +120,12 @@ notifications = ["socket"]
 
 [tasks.hiffy]
 name = "task-hiffy"
-features = ["h743", "stm32h7", "i2c", "gpio", "spi", "rng"]
+features = ["h743", "stm32h7", "i2c", "gpio", "spi"]
 priority = 4
 max-sizes = {flash = 32768, ram = 32768 }
 stacksize = 2048
 start = true
-task-slots = ["sys", "i2c_driver", "rng_driver"]
+task-slots = ["sys", "i2c_driver"]
 
 [tasks.idle]
 name = "task-idle"

app/demo-stm32h7-nucleo/app-h743.toml

@@ -5,8 +5,8 @@ inherit = "base-gimletlet2.toml"
 features = ["dump"]
 
 [tasks.hiffy]
-features = ["h753", "stm32h7", "i2c", "gpio", "qspi", "rng", "hash", "sprot"]
-task-slots = ["hash_driver", "hf", "i2c_driver", "rng_driver", "sprot", "sys", "update_server", "user_leds"]
+features = ["h753", "stm32h7", "i2c", "gpio", "qspi", "hash", "sprot"]
+task-slots = ["hash_driver", "hf", "i2c_driver", "sprot", "sys", "update_server", "user_leds"]
 
 [tasks.jefe]
 features = ["dump"]

app/gimletlet/app.toml

@@ -39,11 +39,11 @@ request_reset = ["update_server"]
 [tasks.hiffy]
 name = "task-hiffy"
 priority = 5
-features = ["lpc55", "gpio", "rng"]
+features = ["lpc55", "gpio"]
 max-sizes = {flash = 32768, ram = 16384 }
 stacksize = 2048
 start = true
-task-slots = ["gpio_driver", "rng_driver", "update_server"]
+task-slots = ["gpio_driver", "update_server"]
 
 [tasks.idle]
 name = "task-idle"

app/lpc55xpresso/app-sprot.toml

@@ -32,11 +32,11 @@ request_reset = ["update_server"]
 [tasks.hiffy]
 name = "task-hiffy"
 priority = 5
-features = ["lpc55", "gpio", "rng"]
+features = ["lpc55", "gpio"]
 max-sizes = {flash = 32768, ram = 16384 }
 stacksize = 2048
 start = true
-task-slots = ["gpio_driver", "rng_driver", "update_server"]
+task-slots = ["gpio_driver", "update_server"]
 
 [tasks.idle]
 name = "task-idle"

app/lpc55xpresso/app.toml

@@ -9,7 +9,6 @@ drv-gimlet-hf-api = { path = "../../drv/gimlet-hf-api", optional = true }
 drv-hash-api = { path = "../../drv/hash-api", optional = true }
 drv-i2c-api = { path = "../../drv/i2c-api" }
 drv-lpc55-gpio-api = { path = "../../drv/lpc55-gpio-api", optional = true }
-drv-rng-api = { path = "../../drv/rng-api", optional = true }
 drv-sp-ctrl-api = { path = "../../drv/sp-ctrl-api", optional = true }
 drv-spi-api = { path = "../../drv/spi-api" }
 drv-sprot-api = { path = "../../drv/sprot-api", optional = true }
@@ -57,7 +56,6 @@ g031 = ["stm32g0", "drv-stm32xx-i2c/g031", "build-i2c/g031"]
 g030 = ["stm32g0", "drv-stm32xx-i2c/g030", "build-i2c/g030"]
 micro = ["no-ipc-counters"]
 panic-messages = ["userlib/panic-messages"]
-rng = ["drv-rng-api"]
 spctrl = ["drv-sp-ctrl-api"]
 
 # This section is here to discourage RLS/rust-analyzer from doing test builds,

task/hiffy/Cargo.toml

@@ -998,32 +998,3 @@ pub(crate) fn hash_finalize_sha256(
     rval[..hash::SHA256_SZ].copy_from_slice(&sha256sum);
     Ok(hash::SHA256_SZ)
 }
-
-#[cfg(feature = "rng")]
-task_slot!(RNG, rng_driver);
-
-#[cfg(feature = "rng")]
-pub(crate) fn rng_fill(
-    stack: &[Option<u32>],
-    _data: &[u8],
-    rval: &mut [u8],
-) -> Result<usize, Failure> {
-    use drv_rng_api::Rng;
-
-    if stack.is_empty() {
-        return Err(Failure::Fault(Fault::MissingParameters));
-    }
-    if stack.len() > 1 {
-        return Err(Failure::Fault(Fault::BadParameter(2)));
-    }
-
-    let frame = &stack[stack.len() - 1..];
-    let count =
-        frame[0].ok_or(Failure::Fault(Fault::MissingParameters))? as usize;
-    if count > rval.len() {
-        return Err(Failure::Fault(Fault::AccessOutOfBounds));
-    }
-
-    func_err(Rng::from(RNG.get_task_id()).fill(&mut rval[0..count]))?;
-    Ok(count)
-}

task/hiffy/src/common.rs

@@ -65,8 +65,6 @@ pub enum Functions {
         (drv_lpc55_gpio_api::Pin, drv_lpc55_gpio_api::Direction),
         u32,
     ),
-    #[cfg(feature = "rng")]
-    Rng(usize, drv_rng_api::RngError),
     #[cfg(feature = "spi")]
     SpiRead((Task, u8, usize, usize), drv_spi_api::SpiError),
     #[cfg(feature = "spi")]
@@ -364,8 +362,6 @@ pub(crate) static HIFFY_FUNCS: &[Function] = &[
     gpio_configure,
     #[cfg(feature = "gpio")]
     gpio_direction,
-    #[cfg(feature = "rng")]
-    crate::common::rng_fill,
     #[cfg(feature = "spi")]
     spi_read,
     #[cfg(feature = "spi")]

task/hiffy/src/lpc55.rs

@@ -128,8 +128,6 @@ pub enum Functions {
     HashUpdate(u32, drv_hash_api::HashError),
     #[cfg(feature = "hash")]
     HashFinalize((), drv_hash_api::HashError),
-    #[cfg(feature = "rng")]
-    Rng(usize, drv_rng_api::RngError),
 }
 
 #[cfg(feature = "i2c")]
@@ -578,8 +576,6 @@ pub(crate) static HIFFY_FUNCS: &[Function] = &[
     hash_update,
     #[cfg(feature = "hash")]
     hash_finalize_sha256,
-    #[cfg(feature = "rng")]
-    crate::common::rng_fill,
 ];
 
 //