Add a MAC address create based on the OMAP die ID registers. Then poplulate the ethaddr enviroment variable so that the device tree alias can be updated prior to boot.
Signed-off-by: Dan Murphy dmurphy@ti.com ---
v2 - Change ethaddr->usbethaddr per comments- http://patchwork.ozlabs.org/patch/281972/
arch/arm/include/asm/arch-omap4/omap.h | 4 ++++ board/ti/panda/panda.c | 16 ++++++++++++++++ 2 files changed, 20 insertions(+)
diff --git a/arch/arm/include/asm/arch-omap4/omap.h b/arch/arm/include/asm/arch-omap4/omap.h index 9129c0d..e35f51c 100644 --- a/arch/arm/include/asm/arch-omap4/omap.h +++ b/arch/arm/include/asm/arch-omap4/omap.h @@ -33,6 +33,10 @@
/* CONTROL_ID_CODE */ #define CONTROL_ID_CODE 0x4A002204 +#define STD_FUSE_DIE_ID_0 0x4A002200 +#define STD_FUSE_DIE_ID_1 0x4A002208 +#define STD_FUSE_DIE_ID_2 0x4A00220c +#define STD_FUSE_DIE_ID_3 0x4A002210
#define OMAP4_CONTROL_ID_CODE_ES1_0 0x0B85202F #define OMAP4_CONTROL_ID_CODE_ES2_0 0x1B85202F diff --git a/board/ti/panda/panda.c b/board/ti/panda/panda.c index e838ffd..bc3c292 100644 --- a/board/ti/panda/panda.c +++ b/board/ti/panda/panda.c @@ -133,6 +133,7 @@ int misc_init_r(void) { int phy_type; u32 auxclk, altclksrc; + uint8_t device_mac[6];
/* EHCI is not supported on ES1.0 */ if (omap_revision() == OMAP4430_ES1_0) @@ -186,6 +187,21 @@ int misc_init_r(void)
writel(altclksrc, &scrm->altclksrc);
+ if (!getenv("usbethaddr")) { + /* + * 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(STD_FUSE_DIE_ID_3) & 0xff; + device_mac[2] = readl(STD_FUSE_DIE_ID_2) & 0xff; + device_mac[3] = readl(STD_FUSE_DIE_ID_1) & 0xff; + device_mac[4] = readl(STD_FUSE_DIE_ID_0) & 0xff; + device_mac[5] = (readl(STD_FUSE_DIE_ID_0) >> 8) & 0xff; + + eth_setenv_enetaddr("usbethaddr", device_mac); + } + return 0; }