[U-Boot] [PATCH v3 5/7] ARM: OMAP5-uevm: Add USB MAC ethernet address

[Dan Murphy <dmurphy@ti.com>]

Set the usbethaddr based on the OMAP DIE_ID registers
which should be unique for each processor.

Then set this as the usb ethernet MAC address.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
v3 - new patch

 board/ti/omap5_uevm/evm.c    |   26 ++++++++++++++++++++++++++
 include/configs/omap5_uevm.h |    2 ++
 2 files changed, 28 insertions(+)

diff --git a/board/ti/omap5_uevm/evm.c b/board/ti/omap5_uevm/evm.c
index bf14cd2..9add0fd 100644
--- a/board/ti/omap5_uevm/evm.c
+++ b/board/ti/omap5_uevm/evm.c
@@ -33,6 +33,11 @@
 #include <usb.h>
 #include <asm/arch/ehci.h>
 #include <asm/ehci-omap.h>
+
+#define MAX_DEVICE_MAC		20
+#define DIE_ID_REG_BASE         (OMAP54XX_L4_CORE_BASE + 0x2000)
+#define DIE_ID_REG_OFFSET	0x200
+
 #endif
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -121,6 +126,27 @@ int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 {
 	int ret;
 	int auxclk;
+	int val[4] = { 0 };
+	int reg;
+	char device_mac[MAX_DEVICE_MAC];
+
+	reg = DIE_ID_REG_BASE + DIE_ID_REG_OFFSET;
+
+	val[0] = readl(reg);
+	val[1] = readl(reg + 0x8);
+	val[2] = readl(reg + 0xC);
+	val[3] = readl(reg + 0x10);
+
+	/* create a fake MAC address from the processor ID code.
+	 * first byte is 0x02 to signify locally administered.
+	 */
+	snprintf(device_mac, MAX_DEVICE_MAC, "%02X:%02X:%02X:%02X:%02X:%02X",
+				0x02, val[3] & 0xff, val[2] & 0xff, val[1] & 0xff,
+				val[0] & 0xff, (val[0] >> 8 & 0xff));
+
+#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+	setenv("usbethaddr", device_mac);
+#endif
 
 	auxclk = readl((*prcm)->scrm_auxclk1);
 	/* Request auxilary clock */
diff --git a/include/configs/omap5_uevm.h b/include/configs/omap5_uevm.h
index 0740a32..53b86ec 100644
--- a/include/configs/omap5_uevm.h
+++ b/include/configs/omap5_uevm.h
@@ -79,5 +79,7 @@
 
 #define CONSOLEDEV		"ttyO2"
 
+#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+
 #define CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC	16296
 #endif /* __CONFIG_OMAP5_EVM_H */
-- 
1.7.9.5