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ARM: OMAP5-uevm: Add USB MAC ethernet address

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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>
This commit is contained in:
Dan Murphy 2013-08-01 14:06:00 -05:00 committed by Marek Vasut
parent 5e5cfaf997
commit 04025b42dc
1 changed files with 23 additions and 0 deletions
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23
board/ti/omap5_uevm/evm.c
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@ -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;