rm ram, add linked_list_allocator on ddr
This commit is contained in:
parent
e248d3d3b1
commit
1f728686ff
16
Cargo.lock
generated
16
Cargo.lock
generated
@ -20,6 +20,14 @@ name = "compiler_builtins"
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version = "0.1.19"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "linked_list_allocator"
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version = "0.6.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "managed"
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version = "0.7.1"
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@ -40,6 +48,11 @@ dependencies = [
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"managed 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "spin"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "vcell"
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version = "0.1.0"
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@ -59,6 +72,7 @@ version = "0.0.0"
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dependencies = [
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"bit_field 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"compiler_builtins 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
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"linked_list_allocator 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
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"r0 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"smoltcp 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -69,8 +83,10 @@ dependencies = [
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"checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
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"checksum byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c3dd8985a7111efc5c80b44e23ecdd8c007de8ade3b96595387e812b957cf5"
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"checksum compiler_builtins 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)" = "4e32b9fc11fdb3aefbd0a4761a8d3a2b7419608b759fa14a26525df4ea5deaba"
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"checksum linked_list_allocator 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "47314ec1d29aa869ee7cb5a5be57be9b1055c56567d59c3fb6689926743e0bea"
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"checksum managed 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fdcec5e97041c7f0f1c5b7d93f12e57293c831c646f4cc7a5db59460c7ea8de6"
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"checksum r0 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2a38df5b15c8d5c7e8654189744d8e396bddc18ad48041a500ce52d6948941f"
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"checksum smoltcp 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fef582369edb298c6c41319a544ca9c4e83622f226055ccfcb35974fbb55ed34"
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"checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
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"checksum vcell 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "45c297f0afb6928cd08ab1ff9d95e99392595ea25ae1b5ecf822ff8764e57a0d"
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"checksum volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0d67cb4616d99b940db1d6bd28844ff97108b498a6ca850e5b6191a532063286"
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@ -23,3 +23,4 @@ volatile-register = "0.2"
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bit_field = "0.10"
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compiler_builtins = { version = "~0.1", default-features = false, features = ["mem", "no-lang-items"]}
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smoltcp = { version = "0.5", default-features = false, features = ["proto-ipv4", "socket-tcp"] }
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linked_list_allocator = "0.6"
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15
src/main.rs
15
src/main.rs
@ -5,6 +5,7 @@
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#![feature(naked_functions)]
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#![feature(compiler_builtins_lib)]
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#![feature(never_type)]
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#![feature(alloc_error_handler)]
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// TODO: disallow unused/dead_code when code moves into a lib crate
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#![allow(dead_code)]
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@ -15,12 +16,12 @@ use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
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use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, EthernetInterface};
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use smoltcp::time::Instant;
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use smoltcp::socket::SocketSet;
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use linked_list_allocator::LockedHeap;
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mod regs;
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mod cortex_a9;
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mod stdio;
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mod zynq;
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mod ram;
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use crate::regs::{RegisterR, RegisterW};
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use crate::cortex_a9::{asm, regs::*, mmu};
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@ -83,6 +84,9 @@ fn l1_cache_init() {
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dciall();
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}
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#[global_allocator]
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static ALLOCATOR: LockedHeap = LockedHeap::empty();
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const HWADDR: [u8; 6] = [0, 0x23, 0xde, 0xea, 0xbe, 0xef];
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fn main() {
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@ -92,6 +96,10 @@ fn main() {
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println!("DDR: {:?}", ddr.status());
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ddr.memtest();
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unsafe {
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ALLOCATOR.lock().init(ddr.ptr::<u8>() as usize, ddr.size());
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}
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let eth = zynq::eth::Eth::default(HWADDR.clone());
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println!("Eth on");
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@ -176,6 +184,11 @@ fn panic(info: &core::panic::PanicInfo) -> ! {
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loop {}
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}
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#[alloc_error_handler]
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fn alloc_error(_: core::alloc::Layout) -> ! {
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panic!("alloc_error")
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}
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#[no_mangle]
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pub unsafe extern "C" fn PrefetchAbort() {
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println!("PrefetchAbort");
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75
src/ram.rs
75
src/ram.rs
@ -1,75 +0,0 @@
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use core::mem::{align_of, size_of};
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pub trait RAM {
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#[inline(always)]
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fn addr(&self) -> usize;
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#[inline(always)]
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fn size(&self) -> usize;
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#[inline(always)]
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fn into_memory_region(&self) -> MemoryRegion {
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MemoryRegion {
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addr: self.addr(),
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size: self.size(),
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}
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}
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}
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pub struct MemoryRegion {
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addr: usize,
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size: usize,
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}
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impl MemoryRegion {
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#[inline(always)]
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fn split(&mut self, offset: usize) -> MemoryRegion {
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if offset > self.size {
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panic!("StaticAllocator: unable to split {}/{} bytes", offset, self.size);
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}
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let result = MemoryRegion {
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addr: self.addr,
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size: offset,
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};
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self.addr += offset;
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self.size -= offset;
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result
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}
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unsafe fn clear<T>(self) -> *mut T {
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let result = self.addr as *mut T;
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for b in core::slice::from_raw_parts_mut::<u8>(result as *mut u8, self.size) {
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*b = 0;
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}
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result
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}
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pub fn align(&mut self, alignment: usize) {
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let mask = alignment - 1;
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let addr = (self.addr | mask) + 1;
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self.size -= addr - self.addr;
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self.addr = addr;
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}
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}
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pub struct StaticAllocator {
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free: MemoryRegion,
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}
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impl StaticAllocator {
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pub fn new<R: RAM>(r: R) -> Self {
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StaticAllocator {
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free: r.into_memory_region(),
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}
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}
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pub fn alloc<'a: 'b, 'b, T: Sized>(&'a mut self) -> &'b mut T {
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self.free.align(align_of::<T>());
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let size = size_of::<T>();
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let region = self.free.split(size);
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unsafe { &mut *region.clear() }
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}
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}
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