1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/net/cpsw-common.c b/drivers/net/cpsw-common.c
new file mode 100644
index 0000000000..e828e85d8b
--- /dev/null
+++ b/drivers/net/cpsw-common.c
@@ -0,0 +1,121 @@
+/*
+ * CPSW common - libs used across TI ethernet devices.
+ *
+ * Copyright (C) 2016, Texas Instruments, Incorporated
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdt_support.h>
+#include <asm/io.h>
+#include <cpsw.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id))
+
+static int davinci_emac_3517_get_macid(struct udevice *dev, u16 offset,
+				       int slave, u8 *mac_addr)
+{
+	void *fdt = (void *)gd->fdt_blob;
+	int node = dev->of_offset;
+	u32 macid_lsb;
+	u32 macid_msb;
+	fdt32_t gmii = 0;
+	int syscon;
+	u32 addr;
+
+	syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
+	if (syscon < 0) {
+		error("Syscon offset not found\n");
+		return -ENOENT;
+	}
+
+	addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
+				sizeof(u32), MAP_NOCACHE);
+	if (addr == FDT_ADDR_T_NONE) {
+		error("Not able to get syscon address to get mac efuse address\n");
+		return -ENOENT;
+	}
+
+	addr += CTRL_MAC_REG(offset, slave);
+
+	/* try reading mac address from efuse */
+	macid_lsb = readl(addr);
+	macid_msb = readl(addr + 4);
+
+	mac_addr[0] = (macid_msb >> 16) & 0xff;
+	mac_addr[1] = (macid_msb >> 8)  & 0xff;
+	mac_addr[2] = macid_msb & 0xff;
+	mac_addr[3] = (macid_lsb >> 16) & 0xff;
+	mac_addr[4] = (macid_lsb >> 8)  & 0xff;
+	mac_addr[5] = macid_lsb & 0xff;
+
+	return 0;
+}
+
+static int cpsw_am33xx_cm_get_macid(struct udevice *dev, u16 offset, int slave,
+				    u8 *mac_addr)
+{
+	void *fdt = (void *)gd->fdt_blob;
+	int node = dev->of_offset;
+	u32 macid_lo;
+	u32 macid_hi;
+	fdt32_t gmii = 0;
+	int syscon;
+	u32 addr;
+
+	syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
+	if (syscon < 0) {
+		error("Syscon offset not found\n");
+		return -ENOENT;
+	}
+
+	addr = (u32)map_physmem(fdt_translate_address(fdt, syscon, &gmii),
+				sizeof(u32), MAP_NOCACHE);
+	if (addr == FDT_ADDR_T_NONE) {
+		error("Not able to get syscon address to get mac efuse address\n");
+		return -ENOENT;
+	}
+
+	addr += CTRL_MAC_REG(offset, slave);
+
+	/* try reading mac address from efuse */
+	macid_lo = readl(addr);
+	macid_hi = readl(addr + 4);
+
+	mac_addr[5] = (macid_lo >> 8) & 0xff;
+	mac_addr[4] = macid_lo & 0xff;
+	mac_addr[3] = (macid_hi >> 24) & 0xff;
+	mac_addr[2] = (macid_hi >> 16) & 0xff;
+	mac_addr[1] = (macid_hi >> 8) & 0xff;
+	mac_addr[0] = macid_hi & 0xff;
+
+	return 0;
+}
+
+int ti_cm_get_macid(struct udevice *dev, int slave, u8 *mac_addr)
+{
+	if (of_machine_is_compatible("ti,dm8148"))
+		return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
+
+	if (of_machine_is_compatible("ti,am33xx"))
+		return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
+
+	if (of_device_is_compatible(dev, "ti,am3517-emac"))
+		return davinci_emac_3517_get_macid(dev, 0x110, slave, mac_addr);
+
+	if (of_device_is_compatible(dev, "ti,dm816-emac"))
+		return cpsw_am33xx_cm_get_macid(dev, 0x30, slave, mac_addr);
+
+	if (of_machine_is_compatible("ti,am4372"))
+		return cpsw_am33xx_cm_get_macid(dev, 0x630, slave, mac_addr);
+
+	if (of_machine_is_compatible("ti,dra7"))
+		return davinci_emac_3517_get_macid(dev, 0x514, slave, mac_addr);
+
+	dev_err(dev, "incompatible machine/device type for reading mac address\n");
+	return -ENOENT;
+}