diff options
| author | Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> | 2017-11-23 11:21:32 (GMT) |
|---|---|---|
| committer | Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> | 2017-12-26 13:35:59 (GMT) |
| commit | 3c230981125c757f81cacca1f317a8f17e5efe27 (patch) | |
| tree | 6811bf2d0eac5b720d665390147cc478027e6ab4 | |
| parent | 8fc0331ccfc92b543a0077fc5b35f45d2b8892fc (diff) | |
| download | u-boot-3c230981125c757f81cacca1f317a8f17e5efe27.tar.xz | |
common: Fix-up MAC addr in dts by fetching env variable serially
The MAC addresses get fixed in the device tree for "ethernet" nodes
is by using trailing number behind "ethernet" found in "/aliases".
It may not be necessary for the "ethernet" nodes to be sequential.
There can be gaps in between or any node disabled
So provide a support to fetch MAC addr sequentially from env
and apply them to "ethernet" nodes in the order they appear in
device tree only if "ethernet" is not "disabled"
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
| -rw-r--r-- | README | 9 | ||||
| -rw-r--r-- | common/fdt_support.c | 25 |
2 files changed, 30 insertions, 4 deletions
@@ -1603,6 +1603,15 @@ The following options need to be configured: See doc/README.link-local for more information. + - MAC address from environment variables + + FDT_SEQ_MACADDR_FROM_ENV + + Fix-up device tree with MAC addresses fetched sequentially from + environment variables. This config work on assumption that + non-usable ethernet node of device-tree are either not present + or their status has been marked as "disabled". + - CDP Options: CONFIG_CDP_DEVICE_ID diff --git a/common/fdt_support.c b/common/fdt_support.c index f4f9543..43ca8db 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -469,12 +469,16 @@ int fdt_fixup_memory(void *blob, u64 start, u64 size) void fdt_fixup_ethernet(void *fdt) { - int i, j, prop; + int i = 0, j, prop; char *tmp, *end; char mac[16]; const char *path; unsigned char mac_addr[ARP_HLEN]; int offset; +#ifdef FDT_SEQ_MACADDR_FROM_ENV + int nodeoff; + const struct fdt_property *fdt_prop; +#endif if (fdt_path_offset(fdt, "/aliases") < 0) return; @@ -487,7 +491,7 @@ void fdt_fixup_ethernet(void *fdt) offset = fdt_first_property_offset(fdt, fdt_path_offset(fdt, "/aliases")); /* Select property number 'prop' */ - for (i = 0; i < prop; i++) + for (j = 0; j < prop; j++) offset = fdt_next_property_offset(fdt, offset); if (offset < 0) @@ -496,11 +500,16 @@ void fdt_fixup_ethernet(void *fdt) path = fdt_getprop_by_offset(fdt, offset, &name, NULL); if (!strncmp(name, "ethernet", 8)) { /* Treat plain "ethernet" same as "ethernet0". */ - if (!strcmp(name, "ethernet")) + if (!strcmp(name, "ethernet") +#ifdef FDT_SEQ_MACADDR_FROM_ENV + || !strcmp(name, "ethernet0") +#endif + ) i = 0; +#ifndef FDT_SEQ_MACADDR_FROM_ENV else i = trailing_strtol(name); - +#endif if (i != -1) { if (i == 0) strcpy(mac, "ethaddr"); @@ -509,6 +518,14 @@ void fdt_fixup_ethernet(void *fdt) } else { continue; } +#ifdef FDT_SEQ_MACADDR_FROM_ENV + nodeoff = fdt_path_offset(fdt, path); + fdt_prop = fdt_get_property(fdt, nodeoff, "status", + NULL); + if (fdt_prop && !strcmp(fdt_prop->data, "disabled")) + continue; + i++; +#endif tmp = env_get(mac); if (!tmp) continue; |