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Added fdt_fixup_stdout that uses aliases to set linux,stdout-path

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We use a combination of the serialN alias and CONFIG_CONS_INDEX to
determine which serial alias we should set linux,stdout-path to.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2007-11-26 17:06:15 -06:00 committed by Gerald Van Baren
parent 3c9272813f
commit 151c8b09b3
1 changed files with 43 additions and 0 deletions
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43
common/fdt_support.c
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@ -28,6 +28,7 @@
#include <fdt.h>
#include <libfdt.h>
#include <fdt_support.h>
#include <exports.h>
/*
* Global data (for the gd->bd)
@ -67,6 +68,43 @@ int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
return fdt_setprop(fdt, nodeoff, prop, val, len);
}
#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
static int fdt_fixup_stdout(void *fdt, int choosenoff)
{
int err = 0;
#ifdef CONFIG_CONS_INDEX
int node;
char sername[9] = { 0 };
const char *path;
sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
err = node = fdt_path_offset(fdt, "/aliases");
if (node >= 0) {
int len;
path = fdt_getprop(fdt, node, sername, &len);
if (path) {
char *p = malloc(len);
err = -FDT_ERR_NOSPACE;
if (p) {
memcpy(p, path, len);
err = fdt_setprop(fdt, choosenoff,
"linux,stdout-path", p, len);
free(p);
}
} else {
err = len;
}
}
#endif
if (err < 0)
printf("WARNING: could not set linux,stdout-path %s.\n",
fdt_strerror(err));
return err;
}
#endif
int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
{
int nodeoffset;
@ -157,6 +195,11 @@ int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
printf("WARNING: could not set linux,initrd-end %s.\n",
fdt_strerror(err));
}
#ifdef CONFIG_OF_STDOUT_VIA_ALIAS
err = fdt_fixup_stdout(fdt, nodeoffset);
#endif
#ifdef OF_STDOUT_PATH
err = fdt_setprop(fdt, nodeoffset,
"linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);