OMAP_DIE_ID_1
die_rev = omap_readl(OMAP_DIE_ID_1);
omap_readl(OMAP_DIE_ID_1),
(omap_readl(OMAP_DIE_ID_1) >> 17) & 0xf);
system_serial_low = omap_readl(OMAP_DIE_ID_1);