[U-Boot-Users] MAC address question...

[Ladislav Michl <ladis@linux-mips.org>]

On Thu, Aug 26, 2004 at 01:30:19AM -0700, Getz, Robin wrote:
> What I was thinking of doing was defining some reserved memory locations of 
> the processor as FLASH, and handle this in /board/specific/flash.c - a 
> flash write to 6 memory locations will actually set the MAC address in the 
> EEPROM attached to the LAN91111.

Patche bellow adds new command - sea - Store Ethernet Address :-)
sea 11:22:33:44:55:66
Address is writen into EEPROM connected to LAN91C111 chip (there are
some not necessary changes - result of some testing)

Best regards,
	ladis

Index: common/cmd_net.c
===================================================================
RCS file: /cvsroot/u-boot/u-boot/common/cmd_net.c,v
retrieving revision 1.13
diff -u -r1.13 cmd_net.c
--- common/cmd_net.c	9 Jun 2004 12:42:26 -0000	1.13
+++ common/cmd_net.c	26 Aug 2004 09:11:20 -0000
@@ -279,4 +279,30 @@
 );
 #endif	/* CFG_CMD_CDP */
 
+extern int set_rom_mac (char *v_rom_mac);
+	
+int do_sea (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int i;
+	char *s, *e, eaddr[6];
+
+	if (argc != 2) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+	s = argv[1];
+	/* turn string into mac value */
+	for (i = 0; i < 6; ++i) {
+		eaddr[i] = simple_strtoul(s, &e, 16);
+		s = (*e) ? e+1 : e;
+	}
+
+	return set_rom_mac(eaddr);
+}
+
+U_BOOT_CMD(
+	sea,	2,	1,	do_sea,
+	"sea\t- Store Ethernet Address\n",
+);
+
 #endif	/* CFG_CMD_NET */
Index: drivers/smc91111.c
===================================================================
RCS file: /cvsroot/u-boot/u-boot/drivers/smc91111.c,v
retrieving revision 1.17
diff -u -r1.17 smc91111.c
--- drivers/smc91111.c	9 Jul 2004 22:51:02 -0000	1.17
+++ drivers/smc91111.c	26 Aug 2004 09:11:26 -0000
@@ -432,15 +432,9 @@
 {
 	PRINTK2 ("%s: smc_reset\n", SMC_DEV_NAME);
 
-	/* This resets the registers mostly to defaults, but doesn't
-	   affect EEPROM.  That seems unnecessary */
-	SMC_SELECT_BANK (0);
-	SMC_outw (RCR_SOFTRST, RCR_REG);
-
 	/* Setup the Configuration Register */
 	/* This is necessary because the CONFIG_REG is not affected */
 	/* by a soft reset */
-
 	SMC_SELECT_BANK (1);
 #if defined(CONFIG_SMC91111_EXT_PHY)
 	SMC_outw (CONFIG_DEFAULT | CONFIG_EXT_PHY, CONFIG_REG);
@@ -448,6 +442,10 @@
 	SMC_outw (CONFIG_DEFAULT, CONFIG_REG);
 #endif
 
+	/* This resets the registers mostly to defaults, but doesn't
+	   affect EEPROM.  That seems unnecessary */
+	SMC_SELECT_BANK (0);
+	SMC_outw (RCR_SOFTRST, RCR_REG);
 
 	/* Release from possible power-down state */
 	/* Configuration register is not affected by Soft Reset */
@@ -1548,13 +1546,55 @@
 	int valid_mac = 0;
 
 	SMC_SELECT_BANK (1);
+	SMC_outw ((SMC_inw (CTL_REG) | CTL_RELOAD) & (~CTL_EEPROM_SELECT), CTL_REG);
+	i = 10;
+	while (SMC_inw (CTL_REG) & CTL_RELOAD) {
+		if (!--i) {
+			printf ("Failed reload MAC addr\n");
+			return 0;
+		}
+		udelay(100);
+	}
+
 	for (i=0; i<6; i++)
 	{
 		v_rom_mac[i] = SMC_inb ((ADDR0_REG + i));
 		valid_mac |= v_rom_mac[i];
 	}
 
+	PRINTK2("SMC eeprom read::\n" );
+	PRINTK2(" MAC:%02X:%02X:%02X:%02X:%02X:%02X\n",
+		v_rom_mac[0], v_rom_mac[1],
+		v_rom_mac[2], v_rom_mac[3],
+		v_rom_mac[4], v_rom_mac[5]) ;
+
+	PRINTK2(" Base: %04x\n", SMC_inw (BASE_REG) );
+	PRINTK2(" Gp: %04x\n", SMC_inw (GP_REG) );
+
 	return (valid_mac ? 1 : 0);
 #endif
 }
+
+int set_rom_mac (char *v_rom_mac)
+{
+	int i, timeout;
+
+	printf ("\nStoring MAC address.\n");
+
+	for (i = 0; i < 3; i++) {
+		SMC_SELECT_BANK (2);
+		SMC_outw ( 0x20 + i, PTR_REG );
+		SMC_SELECT_BANK (1);
+		SMC_outw ( *(((u16 *)v_rom_mac)+i), GP_REG );
+		SMC_outw (SMC_inw (CTL_REG) | CTL_STORE | CTL_EEPROM_SELECT, CTL_REG);
+		timeout = 100;
+		while (SMC_inw (CTL_REG) & CTL_STORE && --timeout)
+			udelay(100);
+		if (timeout == 0) {
+			printf ("Failed to store MAC address\n");
+			break;
+		}
+	}
+}
+
 #endif /* CONFIG_DRIVER_SMC91111 */
Index: drivers/smc91111.h
===================================================================
RCS file: /cvsroot/u-boot/u-boot/drivers/smc91111.h,v
retrieving revision 1.10
diff -u -r1.10 smc91111.h
--- drivers/smc91111.h	9 Jun 2004 15:37:24 -0000	1.10
+++ drivers/smc91111.h	26 Aug 2004 09:11:28 -0000
@@ -374,7 +374,7 @@
 #define CONFIG_EPH_POWER_EN 0x8000 /* When 0 EPH is placed into low power mode. */
 
 /* Default is powered-up, Internal Phy, Wait States, and pin nCNTRL=low */
-#define CONFIG_DEFAULT	(CONFIG_EPH_POWER_EN)
+#define CONFIG_DEFAULT	(CONFIG_EPH_POWER_EN | CONFIG_NO_WAIT)
 
 
 /* Base Address Register */