Merge branch 'mipsel' into dev

.gitignore

@@ -1,6 +1,7 @@
 build
 target
 /kernel/src/arch/x86_64/interrupt/vector.asm
+/kernel/src/arch/mipsel/boot/linker.ld
 *.gen.s
 *.dtb
 

kernel/Makefile

@@ -346,8 +346,9 @@ else ifeq ($(arch), aarch64)
 	@cargo xbuild $(build_args)
 else ifeq ($(arch), mipsel)
 	@for file in context entry trap ; do \
-	    $(hostcc) -E src/arch/$(arch)/boot/$${file}.S -o src/arch/$(arch)/boot/$${file}.gen.s ; \
+	    $(hostcc) -Dboard_$(board) -E src/arch/$(arch)/boot/$${file}.S -o src/arch/$(arch)/boot/$${file}.gen.s ; \
 	done
+	$(hostcc) -Dboard_$(board) -E src/arch/$(arch)/boot/linker.ld.S -o src/arch/$(arch)/boot/linker.ld
 	@cargo xbuild $(build_args)
 endif
 

kernel/src/arch/mipsel/board/malta/consts.rs

@@ -1,3 +1,3 @@
 /// board specific constants
-pub const MEMORY_END: usize = 0x8800_0000;
+pub const MEMORY_END: usize = 0x8090_0000;
-pub const KERNEL_HEAP_SIZE: usize = 0x0044_0000;
+pub const KERNEL_HEAP_SIZE: usize = 0x003b_0000;

kernel/src/arch/mipsel/board/malta/device.dts

@@ -9,7 +9,7 @@
 
 	chosen {
 		stdio = &uart2;
-		bootargs = "rust/sh";
+		bootargs = "sh";
 	};
 
     aliases { };

kernel/src/arch/mipsel/board/thinpad/consts.rs

@@ -1,3 +1,3 @@
 /// board specific constants
 pub const MEMORY_END: usize = 0x8080_0000;
-pub const KERNEL_HEAP_SIZE: usize = 0x0044_0000;
+pub const KERNEL_HEAP_SIZE: usize = 0x0038_0000;

kernel/src/arch/mipsel/board/thinpad/device.dts

@@ -9,7 +9,7 @@
 
 	chosen {
 		stdio = &uart;
-        bootargs = "";
+        bootargs = "sh";
 	};
 
     aliases { };

kernel/src/arch/mipsel/boot/linker.ld.S

@@ -4,7 +4,11 @@
 OUTPUT_ARCH(riscv)
 ENTRY(_start)
 
+#ifdef board_thinpad
+BASE_ADDRESS = 0x80000000;
+#else
 BASE_ADDRESS = 0x80100000;
+#endif
 
 SECTIONS
 {

kernel/src/arch/mipsel/boot/trap.S

@@ -32,6 +32,12 @@ trap_from_kernel:
 	 *  k1 = old stack pointer
 	 *  sp = kernel stack */
 
+#ifdef board_thinpad
+#define TRAPFRAME_SIZE 304
+#else
+#define TRAPFRAME_SIZE 176
+#endif
+
 	# align stack pointer
 	andi k0, sp, 0xf
 	beqz k0, sp_aligned
@@ -39,12 +45,13 @@ trap_from_kernel:
 
 	la k0, 0xfffffff0
 	and k0, sp, k0
-	sw sp, -176(k0)
+	sw sp, -TRAPFRAME_SIZE(k0)
 	move sp, k0
 	
 sp_aligned:
-	# allocate 38 words for trapframe + 6 extra words
+	# allocate 38 / 70 words for trapframe + 6 extra words
-	addiu sp, sp, -176
+
+	addiu sp, sp, -TRAPFRAME_SIZE
 
 	# save general registers
 	sw ra, 160(sp)
@@ -80,6 +87,42 @@ sp_aligned:
 	sw AT, 40(sp)
 	nop	
 
+#ifdef board_thinpad
+	# save floating point registers
+	swc1 $f0, 164(sp)
+	swc1 $f1, 168(sp)
+	swc1 $f2, 172(sp)
+	swc1 $f3, 176(sp)
+	swc1 $f4, 180(sp)
+	swc1 $f5, 184(sp)
+	swc1 $f6, 188(sp)
+	swc1 $f7, 192(sp)
+	swc1 $f8, 196(sp)
+	swc1 $f9, 200(sp)
+	swc1 $f10, 204(sp)
+	swc1 $f11, 208(sp)
+	swc1 $f12, 212(sp)
+	swc1 $f13, 216(sp)
+	swc1 $f14, 220(sp)
+	swc1 $f15, 224(sp)
+	swc1 $f16, 228(sp)
+	swc1 $f17, 232(sp)
+	swc1 $f18, 236(sp)
+	swc1 $f19, 240(sp)
+	swc1 $f20, 244(sp)
+	swc1 $f21, 248(sp)
+	swc1 $f22, 252(sp)
+	swc1 $f23, 256(sp)
+	swc1 $f24, 260(sp)
+	swc1 $f25, 264(sp)
+	swc1 $f26, 268(sp)
+	swc1 $f27, 272(sp)
+	swc1 $f28, 276(sp)
+	swc1 $f29, 280(sp)
+	swc1 $f30, 284(sp)
+	swc1 $f31, 288(sp)
+#endif
+
 	# save hi/lo
 	mflo t1
 	sw t1, 36(sp)
@@ -158,9 +201,45 @@ trap_return:
 	lw fp, 156(sp)
 	lw ra, 160(sp)
 
+#ifdef board_thinpad
+	# restore floating point registers
+	lwc1 $f0, 164(sp)
+	lwc1 $f1, 168(sp)
+	lwc1 $f2, 172(sp)
+	lwc1 $f3, 176(sp)
+	lwc1 $f4, 180(sp)
+	lwc1 $f5, 184(sp)
+	lwc1 $f6, 188(sp)
+	lwc1 $f7, 192(sp)
+	lwc1 $f8, 196(sp)
+	lwc1 $f9, 200(sp)
+	lwc1 $f10, 204(sp)
+	lwc1 $f11, 208(sp)
+	lwc1 $f12, 212(sp)
+	lwc1 $f13, 216(sp)
+	lwc1 $f14, 220(sp)
+	lwc1 $f15, 224(sp)
+	lwc1 $f16, 228(sp)
+	lwc1 $f17, 232(sp)
+	lwc1 $f18, 236(sp)
+	lwc1 $f19, 240(sp)
+	lwc1 $f20, 244(sp)
+	lwc1 $f21, 248(sp)
+	lwc1 $f22, 252(sp)
+	lwc1 $f23, 256(sp)
+	lwc1 $f24, 260(sp)
+	lwc1 $f25, 264(sp)
+	lwc1 $f26, 268(sp)
+	lwc1 $f27, 272(sp)
+	lwc1 $f28, 276(sp)
+	lwc1 $f29, 280(sp)
+	lwc1 $f30, 284(sp)
+	lwc1 $f31, 288(sp)
+#endif
+
 	# save kernel stack
 	lw k0, 0(sp)
-	addiu k1, sp, 176
+	addiu k1, sp, TRAPFRAME_SIZE
 	movn k1, k0, k0
 
 	la k0, _cur_kstack_ptr

kernel/src/arch/mipsel/consts.rs

@@ -2,11 +2,16 @@
 ///
 pub use super::board::consts::*;
 
-pub const MEMORY_OFFSET: usize = 0x80000000;
+pub const MEMORY_OFFSET: usize = 0x8000_0000;
-pub const KERNEL_OFFSET: usize = 0x80100000;
-pub const PHYSICAL_MEMORY_OFFSET: usize = 0x80000000;
 
-pub const USER_STACK_OFFSET: usize = 0x70000000 - USER_STACK_SIZE;
+#[cfg(feature = "board_thinpad")]
+pub const KERNEL_OFFSET: usize = 0x8000_0000;
+#[cfg(feature = "board_malta")]
+pub const KERNEL_OFFSET: usize = 0x8010_0000;
+
+pub const PHYSICAL_MEMORY_OFFSET: usize = 0x8000_0000;
+
+pub const USER_STACK_OFFSET: usize = 0x7000_0000 - USER_STACK_SIZE;
 pub const USER_STACK_SIZE: usize = 0x10000;
 
 pub const MAX_DTB_SIZE: usize = 0x2000;

kernel/src/arch/mipsel/context.rs

@@ -52,6 +52,39 @@ pub struct TrapFrame {
     pub sp: usize,
     pub fp: usize,
     pub ra: usize,
+    /// Floating-point registers (contains garbage if no FP support present)
+    pub f0: usize,
+    pub f1: usize,
+    pub f2: usize,
+    pub f3: usize,
+    pub f4: usize,
+    pub f5: usize,
+    pub f6: usize,
+    pub f7: usize,
+    pub f8: usize,
+    pub f9: usize,
+    pub f10: usize,
+    pub f11: usize,
+    pub f12: usize,
+    pub f13: usize,
+    pub f14: usize,
+    pub f15: usize,
+    pub f16: usize,
+    pub f17: usize,
+    pub f18: usize,
+    pub f19: usize,
+    pub f20: usize,
+    pub f21: usize,
+    pub f22: usize,
+    pub f23: usize,
+    pub f24: usize,
+    pub f25: usize,
+    pub f26: usize,
+    pub f27: usize,
+    pub f28: usize,
+    pub f29: usize,
+    pub f30: usize,
+    pub f31: usize,
     /// Reserved
     pub reserved: usize,
     pub __padding: [usize; 2],

kernel/src/drivers/serial/16550_reg.rs

@@ -68,14 +68,21 @@ impl SerialPort {
 impl Write for SerialPort {
     fn write_str(&mut self, s: &str) -> Result {
         for c in s.bytes() {
-            if c == 127 {
+            match c {
+                127 => {
                     self.putchar(8);
                     self.putchar(b' ');
                     self.putchar(8);
-            } else {
+                },
+                b'\n' => {
+                    self.putchar(b'\r');
+                    self.putchar(b'\n');
+                },
+                c => {
                     self.putchar(c);
                 }
             }
+        }
         Ok(())
     }
 }

kernel/src/drivers/serial/simple_uart.rs

@@ -59,14 +59,21 @@ impl SerialPort {
 impl Write for SerialPort {
     fn write_str(&mut self, s: &str) -> Result {
         for c in s.bytes() {
-            if c == 127 {
+            match c {
+                127 => {
                     self.putchar(8);
                     self.putchar(b' ');
                     self.putchar(8);
-            } else {
+                },
+                b'\n' => {
+                    self.putchar(b'\r');
+                    self.putchar(b'\n');
+                },
+                c => {
                     self.putchar(c);
                 }
             }
+        }
         Ok(())
     }
 }

kernel/src/drivers/serial/ti_16c550c.rs

@@ -68,14 +68,21 @@ impl SerialPort {
 impl Write for SerialPort {
     fn write_str(&mut self, s: &str) -> Result {
         for c in s.bytes() {
-            if c == 127 {
+            match c {
+                127 => {
                     self.putchar(8);
                     self.putchar(b' ');
                     self.putchar(8);
-            } else {
+                },
+                b'\n' => {
+                    self.putchar(b'\r');
+                    self.putchar(b'\n');
+                },
+                c => {
                     self.putchar(c);
                 }
             }
+        }
         Ok(())
     }
 }

kernel/src/syscall/mod.rs

@@ -289,7 +289,8 @@ impl Syscall<'_> {
             ),
             SYS_GETRANDOM => {
                 self.sys_getrandom(args[0] as *mut u8, args[1] as usize, args[2] as u32)
-            }
+            },
+            SYS_RT_SIGQUEUEINFO => self.unimplemented("rt_sigqueueinfo", Ok(0)),
 
             // custom
             SYS_MAP_PCI_DEVICE => self.sys_map_pci_device(args[0], args[1]),

kernel/targets/mipsel.json

@@ -7,7 +7,7 @@
   "target-pointer-width": "32",
   "target-c-int-width": "32",
   "os": "none",
-  "features": "+mips32r2,+soft-float",
+  "features": "+mips32r2,+single-float",
   "max-atomic-width": "32",
   "linker": "rust-lld",
   "linker-flavor": "ld.lld",