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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/include/debug/meson.S
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/include/debug/meson.S')
-rw-r--r--kernel/arch/arm/include/debug/meson.S35
1 files changed, 35 insertions, 0 deletions
diff --git a/kernel/arch/arm/include/debug/meson.S b/kernel/arch/arm/include/debug/meson.S
new file mode 100644
index 000000000..1bae99bf6
--- /dev/null
+++ b/kernel/arch/arm/include/debug/meson.S
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2014 Carlo Caione
+ * Carlo Caione <carlo@caione.org>
+ *
+ * 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.
+ */
+
+#define MESON_AO_UART_WFIFO 0x0
+#define MESON_AO_UART_STATUS 0xc
+
+#define MESON_AO_UART_TX_FIFO_EMPTY (1 << 22)
+#define MESON_AO_UART_TX_FIFO_FULL (1 << 21)
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, =(CONFIG_DEBUG_UART_PHYS) @ physical
+ ldr \rv, =(CONFIG_DEBUG_UART_VIRT) @ virtual
+ .endm
+
+ .macro senduart,rd,rx
+ str \rd, [\rx, #MESON_AO_UART_WFIFO]
+ .endm
+
+ .macro busyuart,rd,rx
+1002: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
+ tst \rd, #MESON_AO_UART_TX_FIFO_EMPTY
+ beq 1002b
+ .endm
+
+ .macro waituart,rd,rx
+1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
+ tst \rd, #MESON_AO_UART_TX_FIFO_FULL
+ bne 1001b
+ .endm