Insert /u-boot,<dto-name> = <index> property into the U-Boot control DT
during SPL DTO application process. This can be used by user to inspect
which DTOs got applied by the SPL and in which order from running U-Boot.
Example:
```
u-boot=> fdt addr $fdtcontroladdr && fdt list /
Working FDT set to aee9aeb0
/ {
u-boot,fdt-dto-imx8mp-dhcom-pdk3-overlay-rev100 = <0x00000005>;
u-boot,fdt-dto-imx8mp-dhcom-som-overlay-rev100 = <0x00000004>;
u-boot,fdt-dto-imx8mp-dhcom-pdk-overlay-eth2xfast = <0x00000003>;
u-boot,fdt-dto-imx8mp-dhcom-som-overlay-eth2xfast = <0x00000002>;
...
```
Signed-off-by: Marek Vasut <ma...@denx.de>
---
Cc: Manoj Sai <abbaraju.manoj...@amarulasolutions.com>
Cc: Sean Anderson <sean...@gmail.com>
Cc: Simon Glass <s...@chromium.org>
Cc: Suniel Mahesh <su...@amarulasolutions.com>
Cc: Tom Rini <tr...@konsulko.com>
Cc: u-b...@dh-electronics.com
Cc: u-boot@lists.denx.de
---
common/spl/spl_fit.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index 988125be008..261b72419b1 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -363,6 +363,7 @@ static int spl_fit_append_fdt(struct spl_image_info
*spl_image,
{
struct spl_image_info image_info;
int node, ret = 0, index = 0;
+ char dtoname[256];
/*
* Use the address following the image as target address for the
@@ -450,7 +451,7 @@ static int spl_fit_append_fdt(struct spl_image_info
*spl_image,
/* Make room in FDT for changes from the overlay */
ret = fdt_increase_size(spl_image->fdt_addr,
- image_info.size);
+ image_info.size + strlen(str));
if (ret < 0)
break;
@@ -464,6 +465,26 @@ static int spl_fit_append_fdt(struct spl_image_info
*spl_image,
debug("%s: DT overlay %s applied\n", __func__,
fit_get_name(ctx->fit, node, NULL));
+
+ /*
+ * Insert /u-boot,<dto-name> = <index> property into
+ * the U-Boot control DT. This can be used by user
+ * to inspect which DTOs got applied by the SPL from
+ * a running U-Boot.
+ */
+ snprintf(dtoname, sizeof(dtoname), "u-boot,%s", str);
+ ret = fdt_setprop_u32(spl_image->fdt_addr, 0, dtoname,
+ index);
+ if (!ret) {
+ /*
+ * The DTO itself was applied, do not treat the
+ * insertion of /u-boot,<dto-name> as an error
+ * so the system can possibly boot somehow.
+ */
+ debug("%s: DT overlay %s name not inserted into
/ node (%d)\n",
+ __func__,
+ fit_get_name(ctx->fit, node, NULL), ret);
+ }
}
free(tmpbuffer);
if (ret)
--
2.43.0
