From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: 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 Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior 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 --- kernel/arch/arm/include/debug/imx.S | 47 +++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 kernel/arch/arm/include/debug/imx.S (limited to 'kernel/arch/arm/include/debug/imx.S') diff --git a/kernel/arch/arm/include/debug/imx.S b/kernel/arch/arm/include/debug/imx.S new file mode 100644 index 000000000..619d8cc1a --- /dev/null +++ b/kernel/arch/arm/include/debug/imx.S @@ -0,0 +1,47 @@ +/* arch/arm/mach-imx/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * + * 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. + * + */ + +#include "imx-uart.h" + +/* + * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to + * stay sync with that. It's hard to maintain, and should be fixed + * globally for multi-platform build to use a fixed virtual address + * for low-level debug uart port across platforms. + */ +#define IMX_IO_P2V(x) ( \ + (((x) & 0x80000000) >> 7) | \ + (0xf4000000 + \ + (((x) & 0x50000000) >> 6) + \ + (((x) & 0x0b000000) >> 4) + \ + (((x) & 0x000fffff)))) + +#define UART_VADDR IMX_IO_P2V(UART_PADDR) + + .macro addruart, rp, rv, tmp + ldr \rp, =UART_PADDR @ physical + ldr \rv, =UART_VADDR @ virtual + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0x40] @ TXDATA + .endm + + .macro waituart,rd,rx + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #0x98] @ SR2 + tst \rd, #1 << 3 @ TXDC + beq 1002b @ wait until transmit done + .endm -- cgit 1.2.3-korg