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arm/raspberrypi: cmdline enhancement and early access workaround.

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cmdline argument is returned without option name.
The calls to command line parsing can be called earlier before
BSS is cleaned out.
This commit is contained in:
Pavel Pisa
2016-05-31 10:33:42 +02:00
parent dd2c57d40b
commit 4c59eebfbf
1 changed files with 8 additions and 4 deletions
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c/src/lib/libbsp/arm/raspberrypi/startup/cmdline.c
+8 -4
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@@ -19,8 +19,8 @@
#include <bsp/vc.h>
#define MAX_CMDLINE_LENGTH 1024
static int rpi_cmdline_ready;
static char rpi_cmdline_cached[MAX_CMDLINE_LENGTH];
static int rpi_cmdline_ready = -1;
static char rpi_cmdline_cached[MAX_CMDLINE_LENGTH] = "force .data placement";
static bcm2835_get_cmdline_entries rpi_cmdline_entries;
const char *rpi_cmdline_get_raw(void)
@@ -32,7 +32,7 @@ const char *rpi_cmdline_get_raw(void)
const char *rpi_cmdline_get_cached(void)
{
if (!rpi_cmdline_ready) {
if (rpi_cmdline_ready <= 0) {
const char *line = rpi_cmdline_get_raw();
strncpy(rpi_cmdline_cached, line, MAX_CMDLINE_LENGTH - 1);
rpi_cmdline_cached[MAX_CMDLINE_LENGTH - 1] = 0;
@@ -43,5 +43,9 @@ const char *rpi_cmdline_get_cached(void)
const char *rpi_cmdline_get_arg(const char* arg)
{
return strstr (rpi_cmdline_get_cached(), arg);
const char *opt_data;
opt_data = strstr(rpi_cmdline_get_cached(), arg);
if (opt_data)
opt_data += strlen(arg);
return opt_data;
}