diff options
Diffstat (limited to 'c')
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/Makefile.am | 1 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/include/bsp.h | 6 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/raspberrypi/startup/cmdline.c | 47 |
3 files changed, 54 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am index 91f327e489..258f8a05c8 100644 --- a/c/src/lib/libbsp/arm/raspberrypi/Makefile.am +++ b/c/src/lib/libbsp/arm/raspberrypi/Makefile.am @@ -95,6 +95,7 @@ libbsp_a_SOURCES += ../shared/arm-cp15-set-ttb-entries.c # Startup libbsp_a_SOURCES += ../../shared/bspreset_loop.c libbsp_a_SOURCES += startup/bspstart.c +libbsp_a_SOURCES += startup/cmdline.c # IRQ libbsp_a_SOURCES += ../shared/arm-cp15-set-exception-handler.c diff --git a/c/src/lib/libbsp/arm/raspberrypi/include/bsp.h b/c/src/lib/libbsp/arm/raspberrypi/include/bsp.h index 0abeed61db..18a94ea7c0 100644 --- a/c/src/lib/libbsp/arm/raspberrypi/include/bsp.h +++ b/c/src/lib/libbsp/arm/raspberrypi/include/bsp.h @@ -7,6 +7,7 @@ */ /* + * Copyright (c) 2015 Yang Qiao * Copyright (c) 2013 Alan Cudmore * * The license and distribution terms for this file may be @@ -35,6 +36,11 @@ extern "C" { #define BSP_GPIO_PINS_PER_BANK 32 #define BSP_GPIO_PINS_PER_SELECT_BANK 10 +void rpi_init_cmdline(void); +const char *rpi_cmdline_get_cached(void); +const char *rpi_cmdline_get_raw(void); +const char *rpi_cmdline_get_arg(const char* arg); + #ifdef __cplusplus } #endif /* __cplusplus */ diff --git a/c/src/lib/libbsp/arm/raspberrypi/startup/cmdline.c b/c/src/lib/libbsp/arm/raspberrypi/startup/cmdline.c new file mode 100644 index 0000000000..f8a7182c65 --- /dev/null +++ b/c/src/lib/libbsp/arm/raspberrypi/startup/cmdline.c @@ -0,0 +1,47 @@ +/** + * @file + * + * @ingroup raspberrypi + * + * @brief mailbox support. + */ +/* + * Copyright (c) 2015 Yang Qiao + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * + * http://www.rtems.org/license/LICENSE + * + */ + +#include <bsp.h> +#include <bsp/vc.h> + +#define MAX_CMDLINE_LENGTH 1024 +static int rpi_cmdline_ready; +static char rpi_cmdline_cached[MAX_CMDLINE_LENGTH]; +static bcm2835_get_cmdline_entries rpi_cmdline_entries; + +const char *rpi_cmdline_get_raw(void) +{ + memset(&rpi_cmdline_entries, 0, sizeof(rpi_cmdline_entries)); + bcm2835_mailbox_get_cmdline(&rpi_cmdline_entries); + return rpi_cmdline_entries.cmdline; +} + +const char *rpi_cmdline_get_cached(void) +{ + if (!rpi_cmdline_ready) { + const char *line = rpi_cmdline_get_raw(); + strncpy(rpi_cmdline_cached, line, MAX_CMDLINE_LENGTH - 1); + rpi_cmdline_cached[MAX_CMDLINE_LENGTH - 1] = 0; + rpi_cmdline_ready = 1; + } + return rpi_cmdline_cached; +} + +const char *rpi_cmdline_get_arg(const char* arg) +{ + return strstr (rpi_cmdline_get_cached(), arg); +} |