diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
---|---|---|
committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/mips/mti-sead3/sead3-console.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (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/mips/mti-sead3/sead3-console.c')
-rw-r--r-- | kernel/arch/mips/mti-sead3/sead3-console.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/kernel/arch/mips/mti-sead3/sead3-console.c b/kernel/arch/mips/mti-sead3/sead3-console.c new file mode 100644 index 000000000..031f47d69 --- /dev/null +++ b/kernel/arch/mips/mti-sead3/sead3-console.c @@ -0,0 +1,46 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + */ +#include <linux/init.h> +#include <linux/console.h> +#include <linux/serial_reg.h> +#include <linux/io.h> + +#define SEAD_UART1_REGS_BASE 0xbf000800 /* ttyS1 = DB9 port */ +#define SEAD_UART0_REGS_BASE 0xbf000900 /* ttyS0 = USB port */ +#define PORT(base_addr, offset) ((unsigned int __iomem *)(base_addr+(offset)*4)) + +static char console_port = 1; + +static inline unsigned int serial_in(int offset, unsigned int base_addr) +{ + return __raw_readl(PORT(base_addr, offset)) & 0xff; +} + +static inline void serial_out(int offset, int value, unsigned int base_addr) +{ + __raw_writel(value, PORT(base_addr, offset)); +} + +void __init fw_init_early_console(char port) +{ + console_port = port; +} + +int prom_putchar(char c) +{ + unsigned int base_addr; + + base_addr = console_port ? SEAD_UART1_REGS_BASE : SEAD_UART0_REGS_BASE; + + while ((serial_in(UART_LSR, base_addr) & UART_LSR_THRE) == 0) + ; + + serial_out(UART_TX, c, base_addr); + + return 1; +} |