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Add kata-os-common::camkes support.

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Add a new "camkes" submodule that consolidates KataOS CAmkES component
integration boilerplate. Each component is expected to declare:

static mut CAMKES: Camkes = Camkes::new("ProcessManager");

and then (typically) use "pre_init" to setup the logger, heap, and the
slot allocator. More fine-grained control is provided by:

fn init_logger(self: &Cmakes, level: Log::LevelFilter);
fn init_allocator(self: &Camkes, heap: &'static mut [u8]);
fn init_slot_allocator(self: &Camkes, first_slot: seL4_CPtr, last_slot: seL4_CPtr);

When receiving capabilities use "init_recv_path" to setup the IPCBuffer
receive path and "assert_recv_path" & "check_recv_path" calls to verify
noting has clobbered the setting.

The debug_assert_slot_* macros are wrapped in Camkes:: functions and a
"top_level_path" function for constructing seL4_CPath objects. Altogether
this normally allows a component to be written without direct use of the
CAmkES global static identifiers SELF_CNODE*.

Change-Id: Ia1351e411a5355789cf74bc0fcfe0e41a418b7d4
GitOrigin-RevId: fb81a8e0687ed9321c9961410edd5dbd54093ce5
This commit is contained in:
Sam Leffler
2022-05-20 20:45:53 +00:00
parent 3bd8389a4c
commit ddacc3762e
11 changed files with 214 additions and 301 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
apps/system/components/DebugConsole/kata-debug-console/src/run.rs
View File

@@ -12,51 +12,23 @@
#![no_std]
use core::slice;
use kata_os_common::allocator;
use kata_os_common::logger::KataLogger;
use kata_os_common::sel4_sys;
use kata_os_common::slot_allocator;
use log::trace;
use sel4_sys::seL4_CPtr;
use slot_allocator::KATA_CSPACE_SLOTS;
use kata_os_common::camkes::Camkes;
extern "C" {
static SELF_CNODE_FIRST_SLOT: seL4_CPtr;
static SELF_CNODE_LAST_SLOT: seL4_CPtr;
static cpio_archive: *const u8; // CPIO archive of built-in files
}
#[no_mangle]
pub extern "C" fn pre_init() {
static KATA_LOGGER: KataLogger = KataLogger;
log::set_logger(&KATA_LOGGER).unwrap();
// NB: set to Trace for early-boot msgs
log::set_max_level(log::LevelFilter::Debug);
static mut CAMKES: Camkes = Camkes::new("DebugConsole");
#[no_mangle]
pub unsafe extern "C" fn pre_init() {
// TODO(b/200946906): Review per-component heap allocations, including this one.
const HEAP_SIZE: usize = 1 << 20;
static mut HEAP_MEMORY: [u8; HEAP_SIZE] = [0; HEAP_SIZE];
unsafe {
allocator::ALLOCATOR.init(HEAP_MEMORY.as_mut_ptr() as usize, HEAP_MEMORY.len());
trace!(
"setup heap: start_addr {:p} size {}",
HEAP_MEMORY.as_ptr(),
HEAP_MEMORY.len()
);
}
unsafe {
KATA_CSPACE_SLOTS.init(
/*first_slot=*/ SELF_CNODE_FIRST_SLOT,
/*size=*/ SELF_CNODE_LAST_SLOT - SELF_CNODE_FIRST_SLOT
);
trace!("setup cspace slots: first slot {} free {}",
KATA_CSPACE_SLOTS.base_slot(),
KATA_CSPACE_SLOTS.free_slots());
}
CAMKES.pre_init(
log::LevelFilter::Debug,
&mut HEAP_MEMORY,
);
}
/// Entry point for DebugConsole. Runs the shell with UART IO.