PBL: fdt: implement fdt_device_get_match_data

Currently, the generic DT image can't properly have a PBL console,
because it's only known at runtime what system we are running on.

As we already parse the FDT in the PBL to get the memory regions, we
could extract the board compatible as well and determine which UART to
use. Add a helper to achieve this.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Link: https://lore.barebox.org/20210410110638.2106658-1-ahmad@a3f.at
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/pbl/string.c b/pbl/string.c
index e6c0997ebc..e96eb99fc2 100644
--- a/pbl/string.c
+++ b/pbl/string.c
@@ -7,6 +7,7 @@
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/compiler.h>
+#include <linux/ctype.h>
 
 void *memcpy(void *__dest, __const void *__src, size_t __n)
 {
@@ -98,6 +99,17 @@ int strcmp(const char *cs, const char *ct)
 	return res;
 }
 
+int strcasecmp(const char *s1, const char *s2)
+{
+	int c1, c2;
+
+	do {
+		c1 = tolower(*s1++);
+		c2 = tolower(*s2++);
+	} while (c1 == c2 && c1 != 0);
+	return c1 - c2;
+}
+
 void *memchr(const void *s, int c, size_t count)
 {
 	const unsigned char *p = s;