initial commit

kernel/linker.ld

@@ -0,0 +1,33 @@
+ENTRY(_start)
+MEMORY
+{
+  TEXT (rx) : ORIGIN = 0x80000, LENGTH = 128K
+  RO (r) : ORIGIN = 0xa0000, LENGTH = 128K
+  DATA (rw) : ORIGIN = 0x100000, LENGTH = 512K
+  RAM (rw) : ORIGIN = 0x180000, LENGTH = 8M
+}
+
+SECTIONS
+{
+  .text : { 
+    KEEP(*(.text.boot))
+    *(.text)
+  } >TEXT
+  .rodata : {
+    *(.rodata)
+  } >RO
+  .data : {
+    *(.data)
+  } >DATA
+  .bss : {
+    __bss_start = .;
+    *(.bss)
+    __bss_end = .;
+  } >DATA
+  __stack_end = ORIGIN(RAM) + LENGTH(RAM);
+}
+
+__kernel = 0x80000;
+__heap_start = ORIGIN(RAM);
+__heap_end = ORIGIN(RAM) + LENGTH(RAM) - 2M;
+__bss_size = (__bss_end - __bss_start)>>3;