uboot-s3c2410-norelocate_irqvec_cpy.patch

Uboot常用的移植patches, 方便定制移植到s3c2440

If we've somehow magically make u-boot end up in RAM (JTAG, ...), then that RAM
is mapped to 0x30000000 and not 0, so we need to copy the interrupt vectors, etc. 

Index: u-boot/cpu/arm920t/start.S
===================================================================
--- u-boot.orig/cpu/arm920t/start.S
+++ u-boot/cpu/arm920t/start.S
@@ -458,6 +458,22 @@
 	strb	r1, [r0]
 #endif /* CONFIG_S3C2410_NAND_BOOT */
 done_relocate:
+
+#if defined(CONFIG_USE_IRQ) && defined(CONFIG_S3C2410)
+	/* In the case of the S3C2410, if we've somehow magically (JTAG, ...)
+	   ended up in RAM, then that ram is mapped to 0x30000000 and not 0.
+	   So we need to copy the interrupt vectors, etc.  */
+
+	mov	r0, #0
+	ldr	r1, _TEXT_BASE
+	mov	r2, #0x40
+irqvec_cpy_next:
+	ldr	r3, [r1], #4
+	str	r3, [r0], #4
+	subs	r2, r2, #4
+	bne	irqvec_cpy_next
+#endif /* CONFIG_USE_IRQ */
+
 #endif /* CONFIG_SKIP_RELOCATE_UBOOT */
 #endif
 	/* Set up the stack						    */