Hello Masahiro,
I tried to test this on Trats2(Exynos4412) with required files from the
linux and the code doesn't build.
On 08/17/2014 08:16 AM, Masahiro Yamada wrote:
U-Boot does not have arch/arm/kernel, include/uapi directories,
This commit copies files as follows:
Location in Linux -> Location in U-Boot
arch/arm/kernel/debug.S -> arch/arm/lib/debug.S
arch/arm/include/debug/8250.S -> arch/arm/include/debug/8250.S
include/uapi/linux/serial_reg.h -> include/linux/serial_reg.h
Signed-off-by: Masahiro Yamada <yamad...@jp.panasonic.com>
---
diff --git a/arch/arm/lib/debug.S b/arch/arm/lib/debug.S
new file mode 100644
index 0000000..14f7c3b
--- /dev/null
+++ b/arch/arm/lib/debug.S
@@ -0,0 +1,138 @@
+/*
+ * linux/arch/arm/kernel/debug.S
+ *
+ * Copyright (C) 1994-1999 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 32-bit debugging code
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+ .text
+
+/*
+ * Some debugging routines (useful if you've got MM problems and
+ * printk isn't working). For DEBUGGING ONLY!!! Do not leave
+ * references to these in a production kernel!
+ */
+
+#if !defined(CONFIG_DEBUG_SEMIHOSTING)
+#include CONFIG_DEBUG_LL_INCLUDE
+#endif
+
+#ifdef CONFIG_MMU
This config: "CONFIG_MMU" is nowhere defined in the u-boot.
U-boot uses (n)def CONFIG_SYS_DCACHE_OFF - for enable/disable the mmu in
ARM.
But when I do the change like this:
-#ifdef CONFIG_MMU
+#ifndef CONFIG_SYS_DCACHE_OFF
Then I got the data abort, after use a printch(). But without this
change the printch() function works fine (after the uart init).
+ .macro addruart_current, rx, tmp1, tmp2
+ addruart \tmp1, \tmp2, \rx
+ mrc p15, 0, \rx, c1, c0
+ tst \rx, #1
+ moveq \rx, \tmp1
+ movne \rx, \tmp2
+ .endm
+
+#else /* !CONFIG_MMU */
+ .macro addruart_current, rx, tmp1, tmp2
+ addruart \rx, \tmp1
Generates build error:
This asm macro: "addruart" gets 3 arguments but in this place got only
two. After fix - works fine.
It's strange, no one use this in the kernel before?
And moreover I think that functions declarations are welcome for this code.
Best regards,
--
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marc...@samsung.com
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
