From 23e6ba8ef9f9967e0c15c6245fd92cdd5f60fc55 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <kwojtus@protonmail.com>
Date: Fri, 11 Oct 2019 11:59:59 +0200
Subject: add initial bootloader work

---
 loader_stage1.ld | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 loader_stage1.ld

(limited to 'loader_stage1.ld')

diff --git a/loader_stage1.ld b/loader_stage1.ld
new file mode 100644
index 0000000..ce11095
--- /dev/null
+++ b/loader_stage1.ld
@@ -0,0 +1,47 @@
+ENTRY(_start)
+ 
+SECTIONS
+{
+    /* Starts at LOADER_ADDR. */
+    /* Warning! Internet says RPis in 32-bit mode load binary at 0x8000! */
+    /* My experiments do, however, show, that qemu emulating RPi2 */
+    /* loads it at 0x10000! (took some pain to find out) */
+    . = 0x10000;
+    /* For AArch64, use . = 0x80000; Unless this too is wrong */
+    __start = .;
+    __text_start = .;
+    .text :
+    {
+        KEEP(*(.text.boot))
+        *(.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 = .;
+}
-- 
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