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 <dmur...@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
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