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

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>

ARM: omap4-panda: Add MAC address creation for panda
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>
Dan Murphy · Tom Rini
1 parent b0c3b1195a
Showing 2 changed files with 20 additions and 0 deletions Side-by-side Diff
arch/arm/include/asm/arch-omap4/omap.h
board/ti/panda/panda.c
@@ -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
@@ -133,6 +133,7 @@
 {
 	int phy_type;
 	u32 auxclk, altclksrc;
+	uint8_t device_mac[6];
  
 	/* EHCI is not supported on ES1.0 */
 	if (omap_revision() == OMAP4430_ES1_0)
@@ -185,6 +186,21 @@
 	altclksrc |= ALTCLKSRC_ENABLE_INT_MASK | ALTCLKSRC_ENABLE_EXT_MASK;
  
 	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;
 }
...	...	@@ -33,6 +33,10 @@
33	33
34	34	/* CONTROL_ID_CODE */
35	35	#define CONTROL_ID_CODE 0x4A002204
	36	+#define STD_FUSE_DIE_ID_0 0x4A002200
	37	+#define STD_FUSE_DIE_ID_1 0x4A002208
	38	+#define STD_FUSE_DIE_ID_2 0x4A00220c
	39	+#define STD_FUSE_DIE_ID_3 0x4A002210
36	40
37	41	#define OMAP4_CONTROL_ID_CODE_ES1_0 0x0B85202F
38	42	#define OMAP4_CONTROL_ID_CODE_ES2_0 0x1B85202F
...	...	@@ -133,6 +133,7 @@
133	133	{
134	134	int phy_type;
135	135	u32 auxclk, altclksrc;
	136	+ uint8_t device_mac[6];
136	137
137	138	/* EHCI is not supported on ES1.0 */
138	139	if (omap_revision() == OMAP4430_ES1_0)
...	...	@@ -185,6 +186,21 @@
185	186	altclksrc \|= ALTCLKSRC_ENABLE_INT_MASK \| ALTCLKSRC_ENABLE_EXT_MASK;
186	187
187	188	writel(altclksrc, &scrm->altclksrc);
	189	+
	190	+ if (!getenv("usbethaddr")) {
	191	+ /*
	192	+ * create a fake MAC address from the processor ID code.
	193	+ * first byte is 0x02 to signify locally administered.
	194	+ */
	195	+ device_mac[0] = 0x02;
	196	+ device_mac[1] = readl(STD_FUSE_DIE_ID_3) & 0xff;
	197	+ device_mac[2] = readl(STD_FUSE_DIE_ID_2) & 0xff;
	198	+ device_mac[3] = readl(STD_FUSE_DIE_ID_1) & 0xff;
	199	+ device_mac[4] = readl(STD_FUSE_DIE_ID_0) & 0xff;
	200	+ device_mac[5] = (readl(STD_FUSE_DIE_ID_0) >> 8) & 0xff;
	201	+
	202	+ eth_setenv_enetaddr("usbethaddr", device_mac);
	203	+ }
188	204
189	205	return 0;
190	206	}