Remove K210 support.

os/src/linker-k210.ld

@@ -1,48 +0,0 @@
-OUTPUT_ARCH(riscv)
-ENTRY(_start)
-BASE_ADDRESS = 0x80020000;
-
-SECTIONS
-{
-    . = BASE_ADDRESS;
-    skernel = .;
-
-    stext = .;
-    .text : {
-        *(.text.entry)
-        *(.text .text.*)
-    }
-
-    . = ALIGN(4K);
-    etext = .;
-    srodata = .;
-    .rodata : {
-        *(.rodata .rodata.*)
-        *(.srodata .srodata.*)
-    }
-
-    . = ALIGN(4K);
-    erodata = .;
-    sdata = .;
-    .data : {
-        *(.data .data.*)
-        *(.sdata .sdata.*)
-    }
-
-    . = ALIGN(4K);
-    edata = .;
-    .bss : {
-        *(.bss.stack)
-        sbss = .;
-        *(.bss .bss.*)
-        *(.sbss .sbss.*)
-    }
-
-    . = ALIGN(4K);
-    ebss = .;
-    ekernel = .;
-
-    /DISCARD/ : {
-        *(.eh_frame)
-    }
-}

os/src/sbi.rs

@@ -5,14 +5,13 @@ use core::arch::asm;
 const SBI_SET_TIMER: usize = 0;
 const SBI_CONSOLE_PUTCHAR: usize = 1;
 
-#[cfg(feature = "board_k210")]
-const SBI_SHUTDOWN: usize = 8;
 // const SBI_CONSOLE_GETCHAR: usize = 2;
 // const SBI_CLEAR_IPI: usize = 3;
 // const SBI_SEND_IPI: usize = 4;
 // const SBI_REMOTE_FENCE_I: usize = 5;
 // const SBI_REMOTE_SFENCE_VMA: usize = 6;
 // const SBI_REMOTE_SFENCE_VMA_ASID: usize = 7;
+// const SBI_SHUTDOWN: usize = 8;
 
 ///  handle SBI call with `which` SBI_id and other arguments
 #[inline(always)]
@@ -46,16 +45,8 @@ pub fn console_putchar(c: usize) {
 //     sbi_call(SBI_CONSOLE_GETCHAR, 0, 0, 0)
 // }
 
-#[cfg(feature = "board_qemu")]
 use crate::board::QEMUExit;
 /// use sbi call to shutdown the kernel
 pub fn shutdown() -> ! {
-    #[cfg(feature = "board_k210")]
-    sbi_call(SBI_SHUTDOWN, 0, 0, 0);
-
-    #[cfg(feature = "board_qemu")]
     crate::board::QEMU_EXIT_HANDLE.exit_failure();
-
-    #[cfg(feature = "board_k210")]
-    panic!("It should shutdown!");
 }

os/src/task/mod.rs

@@ -134,14 +134,8 @@ impl TaskManager {
             // go back to user mode
         } else {
             println!("All applications completed!");
-
-            #[cfg(feature = "board_qemu")]
             use crate::board::QEMUExit;
-            #[cfg(feature = "board_qemu")]
             crate::board::QEMU_EXIT_HANDLE.exit_success();
-            
-            #[cfg(feature = "board_k210")]
-            panic!("All applications completed!");
         }
     }
 }