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path: root/drivers/net/greth.c
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Diffstat (limited to 'drivers/net/greth.c')
-rw-r--r--drivers/net/greth.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/net/greth.c b/drivers/net/greth.c
index 9bc8a8d..3756463 100644
--- a/drivers/net/greth.c
+++ b/drivers/net/greth.c
@@ -34,6 +34,13 @@
#define GRETH_PHY_ADR_DEFAULT 0
#endif
+/* Let board select which GRETH to use as network interface, set
+ * this to zero if only one GRETH is available.
+ */
+#ifndef CONFIG_SYS_GRLIB_GRETH_INDEX
+#define CONFIG_SYS_GRLIB_GRETH_INDEX 0
+#endif
+
/* ByPass Cache when reading regs */
#define GRETH_REGLOAD(addr) SPARC_NOCACHE_READ(addr)
/* Write-through cache ==> no bypassing needed on writes */
@@ -593,8 +600,12 @@ int greth_initialize(bd_t * bis)
debug("Scanning for GRETH\n");
- /* Find Device & IRQ via AMBA Plug&Play information */
- if (ambapp_apb_first(VENDOR_GAISLER, GAISLER_ETHMAC, &apbdev) != 1) {
+ /* Find Device & IRQ via AMBA Plug&Play information,
+ * CONFIG_SYS_GRLIB_GRETH_INDEX select which GRETH if multiple
+ * GRETHs in system.
+ */
+ if (ambapp_apb_find(&ambapp_plb, VENDOR_GAISLER, GAISLER_ETHMAC,
+ CONFIG_SYS_GRLIB_GRETH_INDEX, &apbdev) != 1) {
return -1; /* GRETH not found */
}