From 2d91eebbf1fc9335269207602b360ec485aaf7bb Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <kwojtus@protonmail.com>
Date: Tue, 17 Dec 2019 17:39:03 +0100
Subject: don't embed stage2 of bootloader as binary blob - use smart section
 naming

---
 loader_linker.ld | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 loader_linker.ld

(limited to 'loader_linker.ld')

diff --git a/loader_linker.ld b/loader_linker.ld
new file mode 100644
index 0000000..a8942f6
--- /dev/null
+++ b/loader_linker.ld
@@ -0,0 +1,70 @@
+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; */
+    
+    /* rpi-open-firmware, on the other hand, loads it at 0x2000000 */
+    /* (and this should be not-so-hard to change by modifying the */
+    /* firmware) */
+    
+    . = 0x2000000;
+
+    /* For AArch64, use . = 0x80000; Unless this too is wrong */
+    
+    __start = .;
+    __text_stage1_start = .;
+    .text_stage1 :
+    {
+        KEEP(*(.text.boot))
+        *(.text.boot)
+        *(.text.stage1main)
+    }
+    . = ALIGN(4096); /* align to page size */
+    __text_stage1_end = .;
+
+    __stage2_start = .;
+    __text_start = .;
+    .text :
+    {
+        KEEP(*(.text.stage2main))
+        *(.text.boot)
+    }
+    . = 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;
+
+    __stage2_end = .;
+    __stage2_size = __stage2_end - __stage2_start;
+    __end = .;
+}
-- 
cgit v1.2.3