83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/**************************************************************************
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*
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* BRIEF MODULE DESCRIPTION
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* cmdline parsing for Ralink RT2880 solution
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*
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* Copyright 2007 Ralink Inc. (bruce_chang@ralinktech.com.tw)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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**************************************************************************
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* May 2007 Bruce Chang
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*
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* Initial Release
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*
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*
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*
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**************************************************************************
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/module.h>
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#include <asm/fw/fw.h>
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#if defined(CONFIG_RT2880_UART_115200)
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#define TTY_UART_CONSOLE "console=ttyS0,115200n8"
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#else
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#define TTY_UART_CONSOLE "console=ttyS0,57600n8"
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#endif
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int env_dual_image;
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EXPORT_SYMBOL(env_dual_image);
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static inline void fixup_env(void)
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{
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const char *s = fw_getenv("dual_image");
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if (s && strcmp(s, "0") == 0)
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env_dual_image = 0;
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else
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env_dual_image = 1;
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}
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static inline void fixup_cmdline(char *s, size_t size)
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{
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const char *p = TTY_UART_CONSOLE;
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if (strstr(s, "console="))
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return;
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/* Add space if there are symbols in buffer */
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if (*s)
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strlcat(s, " ", size);
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strlcat(s, p, size);
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}
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void __init prom_init_cmdline(void)
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{
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fw_init_cmdline();
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fixup_cmdline(arcs_cmdline, sizeof(arcs_cmdline));
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fixup_env();
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}
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