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ARM: omap4-panda: Add MAC address creation for panda

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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>
This commit is contained in:
Dan Murphy 2013-10-10 08:54:23 -05:00 committed by Tom Rini
parent b0c3b1195a
commit e84b8f6ce0
2 changed files with 20 additions and 0 deletions
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4
arch/arm/include/asm/arch-omap4/omap.h
View File

@ -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

16
board/ti/panda/panda.c
View File

@ -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;
}