forked from Imagelibrary/rtems
9964895866
Adjust build support files to new directory layout. This patch is a part of the BSP source reorganization. Update #3285.
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/**
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* @file
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*
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* @ingroup raspberrypi
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*
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* @brief mailbox support.
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*/
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/*
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* Copyright (c) 2015 Yang Qiao
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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*
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* http://www.rtems.org/license/LICENSE
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*
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*/
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#include <bsp.h>
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#include <bsp/vc.h>
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#include <string.h>
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#define MAX_CMDLINE_LENGTH 1024
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static int rpi_cmdline_ready = -1;
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static char rpi_cmdline_cached[MAX_CMDLINE_LENGTH] = "force .data placement";
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static bcm2835_get_cmdline_entries rpi_cmdline_entries;
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const char *rpi_cmdline_get_raw(void)
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{
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memset(&rpi_cmdline_entries, 0, sizeof(rpi_cmdline_entries));
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if (bcm2835_mailbox_get_cmdline(&rpi_cmdline_entries) < 0)
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return NULL;
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return rpi_cmdline_entries.cmdline;
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}
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const char *rpi_cmdline_get_cached(void)
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{
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if (rpi_cmdline_ready <= 0) {
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const char *line = rpi_cmdline_get_raw();
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if (line != NULL)
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strncpy(rpi_cmdline_cached, line, MAX_CMDLINE_LENGTH - 1);
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rpi_cmdline_cached[MAX_CMDLINE_LENGTH - 1] = 0;
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rpi_cmdline_ready = 1;
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}
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return rpi_cmdline_cached;
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}
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const char *rpi_cmdline_get_arg(const char* arg)
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{
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const char *opt_data;
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opt_data = strstr(rpi_cmdline_get_cached(), arg);
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if (opt_data)
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opt_data += strlen(arg);
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return opt_data;
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}
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