libsupport_zynq/ram: split allocators for two cores.

master
pca006132 3 years ago
parent ccce37dffd
commit 5850401d72
  1. 1
      libsupport_zynq/Cargo.toml
  2. 89
      libsupport_zynq/src/ram.rs

@ -10,6 +10,7 @@ target_zc706 = ["libboard_zynq/target_zc706"]
target_cora_z7_10 = ["libboard_zynq/target_cora_z7_10"]
panic_handler = []
dummy_irq_handler = []
alloc_core = []
default = ["panic_handler", "dummy_irq_handler"]

@ -1,55 +1,100 @@
use alloc::alloc::Layout;
use core::alloc::GlobalAlloc;
use core::cell::UnsafeCell;
use core::ptr::NonNull;
use alloc::alloc::Layout;
use linked_list_allocator::Heap;
use libcortex_a9::mutex::Mutex;
use libboard_zynq::ddr::DdrRam;
use libcortex_a9::regs::MPIDR;
use libregister::RegisterR;
use linked_list_allocator::Heap;
#[global_allocator]
static ALLOCATOR: CortexA9Alloc = CortexA9Alloc(Mutex::new(Heap::empty()));
static mut ALLOCATOR: CortexA9Alloc = CortexA9Alloc(
UnsafeCell::new(Heap::empty()),
UnsafeCell::new(Heap::empty()),
);
/// LockedHeap doesn't lock properly
struct CortexA9Alloc(Mutex<Heap>);
struct CortexA9Alloc(UnsafeCell<Heap>, UnsafeCell<Heap>);
unsafe impl Sync for CortexA9Alloc {}
unsafe impl GlobalAlloc for CortexA9Alloc {
unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
self.0.lock()
.allocate_first_fit(layout)
.ok()
.map_or(0 as *mut u8, |allocation| allocation.as_ptr())
if MPIDR.read().cpu_id() == 0 {
self.0.get().as_mut()
} else {
self.1.get().as_mut()
}
.unwrap()
.allocate_first_fit(layout)
.ok()
.map_or(0 as *mut u8, |allocation| allocation.as_ptr())
}
unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
self.0.lock()
.deallocate(NonNull::new_unchecked(ptr), layout)
if MPIDR.read().cpu_id() == 0 {
self.0.get().as_mut()
} else {
self.1.get().as_mut()
}
.unwrap()
.deallocate(NonNull::new_unchecked(ptr), layout)
}
}
#[cfg(not(feature = "alloc_core"))]
pub fn init_alloc_ddr(ddr: &mut DdrRam) {
unsafe {
ALLOCATOR.0.lock()
ALLOCATOR
.0
.get()
.as_mut()
.unwrap()
.init(ddr.ptr::<u8>() as usize, ddr.size());
}
}
#[cfg(feature = "alloc_core")]
extern "C" {
static __heap_start: usize;
static __heap_end: usize;
static __heap0_start: usize;
static __heap0_end: usize;
static __heap1_start: usize;
static __heap1_end: usize;
}
pub fn init_alloc_linker() {
#[cfg(feature = "alloc_core")]
pub fn init_alloc_core0() {
unsafe {
let start = &__heap_start as *const usize as usize;
let end = &__heap_end as *const usize as usize;
ALLOCATOR.0.lock()
.init(start, end - start);
let start = &__heap0_start as *const usize as usize;
let end = &__heap0_end as *const usize as usize;
ALLOCATOR.0.get().as_mut().unwrap().init(start, end - start);
}
}
#[cfg(feature = "alloc_core")]
pub fn init_alloc_core1() {
unsafe {
let start = &__heap1_start as *const usize as usize;
let end = &__heap1_end as *const usize as usize;
ALLOCATOR.1.get().as_mut().unwrap().init(start, end - start);
}
}
#[alloc_error_handler]
fn alloc_error(_: core::alloc::Layout) -> ! {
panic!("alloc_error")
fn alloc_error(layout: core::alloc::Layout) -> ! {
let id = MPIDR.read().cpu_id();
let heap = unsafe {
if id == 0 {
ALLOCATOR.0.get()
} else {
ALLOCATOR.1.get()
}
.as_mut()
.unwrap()
};
panic!(
"Core {} alloc_error, layout: {:?}, used memory: {}",
id,
layout,
heap.used()
);
}

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