[U-Boot] [PATCH 1/2] TQM8xx: add device tree support for TQM8xx based boards.

Heiko Schocher
2010-02-09T14:50:21Z

also use hwconfig feature for configuring, if this hardware
has an fec or not. So we can adjust the DTS, if there is a fec
or not.

syntax:

hwconfig=fec:on if hardware has an fec
hwconfig=fec:off if hardware has no fec

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Wolfgang Denk <wd@denx.de>
---
board/tqc/tqm8xx/tqm8xx.c | 119 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 119 insertions(+), 0 deletions(-)

diff --git a/board/tqc/tqm8xx/tqm8xx.c b/board/tqc/tqm8xx/tqm8xx.c
index f92c598..53f79e8 100644
--- a/board/tqc/tqm8xx/tqm8xx.c
+++ b/board/tqc/tqm8xx/tqm8xx.c
@@ -22,11 +22,16 @@
*/

#include <common.h>
+#include <hwconfig.h>
#include <mpc8xx.h>
#ifdef CONFIG_PS2MULT
#include <ps2mult.h>
#endif

+#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#endif
+
extern flash_info_t flash_info[]; /* FLASH chips info */

DECLARE_GLOBAL_DATA_PTR;
@@ -599,6 +604,120 @@ void lcd_show_board_info(void)
}
#endif /* CONFIG_LCD_INFO */

+/*
+ * Device Tree Support
+ */
+#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
+int fdt_set_node_and_value (void *blob,
+ char *nodename,
+ char *regname,
+ void *var,
+ int size)
+{
+ int ret = 0;
+ int nodeoffset = 0;
+
+ nodeoffset = fdt_path_offset (blob, nodename);
+ if (nodeoffset >= 0) {
+ ret = fdt_setprop (blob, nodeoffset, regname, var,
+ size);
+ if (ret < 0) {
+ printf("ft_blob_update(): "
+ "cannot set %s/%s property; err: %s\n",
+ nodename, regname, fdt_strerror (ret));
+ }
+ } else {
+ printf("ft_blob_update(): "
+ "cannot find %s node err:%s\n",
+ nodename, fdt_strerror (nodeoffset));
+ }
+ return ret;
+}
+
+int fdt_del_node_name (void *blob, char *nodename)
+{
+ int ret = 0;
+ int nodeoffset = 0;
+
+ nodeoffset = fdt_path_offset (blob, nodename);
+ if (nodeoffset >= 0) {
+ ret = fdt_del_node (blob, nodeoffset);
+ if (ret < 0) {
+ printf("%s: cannot delete %s; err: %s\n",
+ __func__, nodename, fdt_strerror (ret));
+ }
+ } else {
+ printf("%s: cannot find %s node err:%s\n",
+ __func__, nodename, fdt_strerror (nodeoffset));
+ }
+ return ret;
+}
+
+int fdt_del_prop_name (void *blob, char *nodename, char *propname)
+{
+ int ret = 0;
+ int nodeoffset = 0;
+
+ nodeoffset = fdt_path_offset (blob, nodename);
+ if (nodeoffset >= 0) {
+ ret = fdt_delprop (blob, nodeoffset, propname);
+ if (ret < 0) {
+ printf("%s: cannot delete %s %s; err: %s\n",
+ __func__, nodename, propname,
+ fdt_strerror (ret));
+ }
+ } else {
+ printf("%s: cannot find %s node err:%s\n",
+ __func__, nodename, fdt_strerror (nodeoffset));
+ }
+ return ret;
+}
+
+/*
+ * update "brg" property in the blob
+ */
+void ft_blob_update (void *blob, bd_t *bd)
+{
+ uchar enetaddr[6];
+ ulong brg_data = 0;
+
+ /* BRG */
+ brg_data = cpu_to_be32(bd->bi_busfreq);
+ fdt_set_node_and_value(blob,
+ "/soc/cpm", "brg-frequency",
+ &brg_data, sizeof(brg_data));
+
+ /* MAC addr */
+ if (eth_getenv_enetaddr("ethaddr", enetaddr)) {
+ fdt_set_node_and_value(blob,
+ "ethernet0", "local-mac-address",
+ enetaddr, sizeof(u8) * 6);
+ }
+
+ if (hwconfig_arg_cmp("fec", "off")) {
+ /* no FEC on this plattform, delete DTS nodes */
+ fdt_del_node_name (blob, "ethernet1");
+ fdt_del_node_name (blob, "mdio1");
+ /* also the aliases entries */
+ fdt_del_prop_name (blob, "/aliases", "ethernet1");
+ fdt_del_prop_name (blob, "/aliases", "mdio1");
+ } else {
+ /* adjust local-mac-address for FEC ethernet */
+ if (eth_getenv_enetaddr("eth1addr", enetaddr)) {
+ fdt_set_node_and_value(blob,
+ "ethernet1", "local-mac-address",
+ enetaddr, sizeof(u8) * 6);
+ }
+ }
+}
+
+void ft_board_setup(void *blob, bd_t *bd)
+{
+ ft_cpu_setup(blob, bd);
+ ft_blob_update(blob, bd);
+}
+#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
+
/* ---------------------------------------------------------------------------- */
/* TK885D specific initializaion */
/* ---------------------------------------------------------------------------- */
--
1.6.2.5

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