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split rom_data into safe and unsafe functions

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This was originally applied in 71a7057b76
and got inadvertently reverted as part of e3be4f8025
This commit is contained in:
Andrea Nall 2021-06-20 01:12:16 -05:00
parent 8690d93a6a
commit dab619d627
1 changed files with 33 additions and 12 deletions
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45
rp2040-hal/src/rom_data.rs
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@ -52,6 +52,25 @@ macro_rules! rom_funcs {
}
}
macro_rules! rom_funcs_unsafe {
(
$(
$(#[$outer:meta])*
$c:literal $name:ident (
$( $aname:ident : $aty:ty ),*
) -> $ret:ty ;
)*
) => {
$(
$(#[$outer])*
pub unsafe fn $name($( $aname:$aty ),*) -> $ret{
let func: extern "C" fn( $( $aty ),* ) -> $ret = rom_table_lookup(FUNC_TABLE, *$c);
func($( $aname ),*)
}
)*
}
}
rom_funcs! {
/// Return a count of the number of 1 bits in value.
b"P3" popcount32(value: u32) -> u32;
@ -65,6 +84,20 @@ rom_funcs! {
/// Return the number of consecutive low order 0 bits of value. If value is zero, returns 32.
b"T3" ctz32(value: u32) -> u32;
/// Resets the RP2040 and uses the watchdog facility to re-start in BOOTSEL mode:
/// * gpio_activity_pin_mask is provided to enable an 'activity light' via GPIO attached LED
/// for the USB Mass Storage Device:
/// * 0 No pins are used as per cold boot.
/// * Otherwise a single bit set indicating which GPIO pin should be set to output and
/// raised whenever there is mass storage activity from the host.
/// * disable_interface_mask may be used to control the exposed USB interfaces:
/// * 0 To enable both interfaces (as per cold boot).
/// * 1 To disable the USB Mass Storage Interface.
/// * 2 to Disable the USB PICOBOOT Interface.
b"UB" reset_to_usb_boot(gpio_activity_pin_mask: u32, disable_interface_mask: u32) -> ();
}
rom_funcs_unsafe! {
/// Sets n bytes start at ptr to the value c and returns ptr
b"MS" memset(ptr: *mut u8, c: u8, n: u8) -> *mut u8;
@ -113,18 +146,6 @@ rom_funcs! {
/// know exactly what kind of flash device is connected.
b"CX" flash_enter_cmd_xip() -> ();
/// Resets the RP2040 and uses the watchdog facility to re-start in BOOTSEL mode:
/// * gpio_activity_pin_mask is provided to enable an 'activity light' via GPIO attached LED
/// for the USB Mass Storage Device:
/// * 0 No pins are used as per cold boot.
/// * Otherwise a single bit set indicating which GPIO pin should be set to output and
/// raised whenever there is mass storage activity from the host.
/// * disable_interface_mask may be used to control the exposed USB interfaces:
/// * 0 To enable both interfaces (as per cold boot).
/// * 1 To disable the USB Mass Storage Interface.
/// * 2 to Disable the USB PICOBOOT Interface.
b"UB" reset_to_usb_boot(gpio_activity_pin_mask: u32, disable_interface_mask: u32) -> ();
/// This is the method that is entered by core 1 on reset to wait to be launched by core 0.
/// There are few cases where you should call this method (resetting core 1 is much better).
/// This method does not return and should only ever be called on core 1.