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| author | Nishanth Menon <nm@ti.com> | 2014-03-28 11:00:04 -0500 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-04-17 14:39:54 -0400 |
| commit | 8a0c6d6fa9de22c0c148492a8759bb456d52887c (patch) | |
| tree | 240b9e99e40a3948bef9a7a629ad91849cd3f06f /arch | |
| parent | a88e55c4c6ad92626cff205e3504b483df27c5a0 (diff) | |
| download | u-boot-imx-8a0c6d6fa9de22c0c148492a8759bb456d52887c.zip u-boot-imx-8a0c6d6fa9de22c0c148492a8759bb456d52887c.tar.gz u-boot-imx-8a0c6d6fa9de22c0c148492a8759bb456d52887c.tar.bz2 | |
OMAP: common: consolidate fake USB ethernet MAC address creation
TI platforms such as OMAP5uevm, PandaBoard, use equivalent
logic to generate fake USB MAC address from device unique DIE ID.
Consolidate this to a generic location such that other TI platforms such
as BeagleBoard-XM can also use the same.
NOTE: at this point in time, I dont yet see a need for a generic dummy
ethernet MAC address creation function, but if there is a need in the
future, this can be further abstracted out.
Signed-off-by: Nishanth Menon <nm@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/utils.c | 21 | ||||
| -rw-r--r-- | arch/arm/include/asm/omap_common.h | 2 |
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/utils.c b/arch/arm/cpu/armv7/omap-common/utils.c index aabf2bd..1696c2d 100644 --- a/arch/arm/cpu/armv7/omap-common/utils.c +++ b/arch/arm/cpu/armv7/omap-common/utils.c @@ -5,6 +5,7 @@ * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> +#include <asm/arch/sys_proto.h> static void do_cancel_out(u32 *num, u32 *den, u32 factor) { while (1) { @@ -39,3 +40,23 @@ void cancel_out(u32 *num, u32 *den, u32 den_limit) *den = (*den + 1) / 2; } } + +void __weak usb_fake_mac_from_die_id(u32 *id) +{ + uint8_t device_mac[6]; + + 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] = id[3] & 0xff; + device_mac[2] = id[2] & 0xff; + device_mac[3] = id[1] & 0xff; + device_mac[4] = id[0] & 0xff; + device_mac[5] = (id[0] >> 8) & 0xff; + + eth_setenv_enetaddr("usbethaddr", device_mac); + } +} diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h index 04925bc..729723a 100644 --- a/arch/arm/include/asm/omap_common.h +++ b/arch/arm/include/asm/omap_common.h @@ -574,6 +574,8 @@ void abb_setup(u32 fuse, u32 ldovbb, u32 setup, u32 control, u32 txdone, u32 txdone_mask, u32 opp); s8 abb_setup_ldovbb(u32 fuse, u32 ldovbb); +void usb_fake_mac_from_die_id(u32 *id); + /* HW Init Context */ #define OMAP_INIT_CONTEXT_SPL 0 #define OMAP_INIT_CONTEXT_UBOOT_FROM_NOR 1 |