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authorDan Murphy <dmurphy@ti.com>2013-08-01 14:06:00 -0500
committerMarek Vasut <marex@denx.de>2013-08-26 21:56:34 +0200
commit04025b42dc32b0f6437c24743b1c88b8ec43995a (patch)
treee55334416fa706e19508426c5c1776f0154ba310 /board
parent5e5cfaf9977e5ca563889e0689ff52ae07883745 (diff)
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ARM: OMAP5-uevm: Add USB MAC ethernet address
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>
Diffstat (limited to 'board')
-rw-r--r--board/ti/omap5_uevm/evm.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/board/ti/omap5_uevm/evm.c b/board/ti/omap5_uevm/evm.c
index d0c5241..97994b0 100644
--- a/board/ti/omap5_uevm/evm.c
+++ b/board/ti/omap5_uevm/evm.c
@@ -19,6 +19,10 @@
#include <asm/arch/clock.h>
#include <asm/arch/ehci.h>
#include <asm/ehci-omap.h>
+
+#define DIE_ID_REG_BASE (OMAP54XX_L4_CORE_BASE + 0x2000)
+#define DIE_ID_REG_OFFSET 0x200
+
#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -144,9 +148,28 @@ int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
int ret;
int auxclk;
+ int reg;
+ uint8_t device_mac[6];
enable_host_clocks();
+ if (!getenv("usbethaddr")) {
+ reg = DIE_ID_REG_BASE + DIE_ID_REG_OFFSET;
+
+ /*
+ * create a fake MAC address from the processor ID code.
+ * first byte is 0x02 to signify locally administered.
+ */
+ device_mac[0] = 0x02;
+ device_mac[1] = readl(reg + 0x10) & 0xff;
+ device_mac[2] = readl(reg + 0xC) & 0xff;
+ device_mac[3] = readl(reg + 0x8) & 0xff;
+ device_mac[4] = readl(reg) & 0xff;
+ device_mac[5] = (readl(reg) >> 8) & 0xff;
+
+ eth_setenv_enetaddr("usbethaddr", device_mac);
+ }
+
auxclk = readl((*prcm)->scrm_auxclk1);
/* Request auxilary clock */
auxclk |= AUXCLK_ENABLE_MASK;