add initial bootloader work

1 files changed, 44 insertions, 0 deletions

diff --git a/loader_stage2.ld b/loader_stage2.ld
new file mode 100644
index 0000000..8f215e9
--- /dev/null
+++ b/loader_stage2.ld
@@ -0,0 +1,44 @@
+ENTRY(_start)
+ 
+SECTIONS
+{
+    /* stage2 bootloader gets loaded at 0x4000 */
+    . = 0x4000;
+    __start = .;
+    __text_start = .;
+    .text :
+    {
+        /* have entry point at the beginning */
+        KEEP(*(.text.stage2main))
+        *(.text)
+    }
+    . = ALIGN(4096); /* align to page size */
+    __text_end = .;
+ 
+    __rodata_start = .;
+    .rodata :
+    {
+        *(.rodata)
+    }
+    . = ALIGN(4096); /* align to page size */
+    __rodata_end = .;
+ 
+    __data_start = .;
+    .data :
+    {
+        *(.data)
+    }
+    . = ALIGN(4096); /* align to page size */
+    __data_end = .;
+ 
+    __bss_start = .;
+    .bss :
+    {
+        bss = .;
+        *(.bss)
+    }
+    . = ALIGN(4096); /* align to page size */
+    __bss_end = .;
+    __bss_size = __bss_end - __bss_start;
+    __end = .;
+}