build bootloaders from code

This adds the infrastructure for building from source the bootloaders which
will go into the application initial program, in the boot sector.  As a
simple test case, it includes a simple bootloader which merely jumpts to
the code address specified in the AIP, with the stack address specified
there.

1 files changed, 22 insertions, 0 deletions

diff --git a/boot/ldscript b/boot/ldscript
new file mode 100644
index 0000000..53a20bf
--- /dev/null
+++ b/boot/ldscript
@@ -0,0 +1,22 @@
+OUTPUT_FORMAT(elf32-shbig-linux)
+ENTRY(__start)
+SECTIONS
+{
+	. = 0x06002f00;
+	.text :
+	{
+		*(.text);
+	}
+	.data :
+	{
+		*(.data);
+		*(.rodata);
+	}
+	.bss ALIGN(4) :
+	{
+		__bss_start = .;
+		*(.bss);
+		__bss_end = (. + 3) & ~ 3;
+	}
+}
+