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fdt_support: Add multi-serial support for stdout fixup

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Currently fdt_fixup_stdout() is using hard-coded CONFIG_CONS_INDEX
constant. With multi-serial support, the CONS_INDEX may no longer
represent actual console, so we should try to extract port number
from the current stdio device name instead of always hard-coding the
constant value.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Gerald Van Baren <vanbaren@cideas.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Anton Vorontsov 2009-10-15 17:47:04 +04:00 committed by Kumar Gala
parent da0e5f7ee8
commit 3e303f748c
1 changed files with 21 additions and 1 deletions
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22
common/fdt_support.c
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@ -22,6 +22,7 @@
*/
#include <common.h>
#include <stdio_dev.h>
#include <linux/ctype.h>
#include <linux/types.h>
#include <asm/global_data.h>
@ -90,6 +91,23 @@ int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
}
#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
#ifdef CONFIG_SERIAL_MULTI
static void fdt_fill_multisername(char *sername, size_t maxlen)
{
const char *outname = stdio_devices[stdout]->name;
if (strcmp(outname, "serial") > 0)
strncpy(sername, outname, maxlen);
/* eserial? */
if (strcmp(outname + 1, "serial") > 0)
strncpy(sername, outname + 1, maxlen);
}
#else
static inline void fdt_fill_multisername(char *sername, size_t maxlen) {}
#endif /* CONFIG_SERIAL_MULTI */
static int fdt_fixup_stdout(void *fdt, int chosenoff)
{
int err = 0;
@ -98,7 +116,9 @@ static int fdt_fixup_stdout(void *fdt, int chosenoff)
char sername[9] = { 0 };
const char *path;
sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
fdt_fill_multisername(sername, sizeof(sername) - 1);
if (!sername[0])
sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
err = node = fdt_path_offset(fdt, "/aliases");
if (node >= 0) {