Patchwork [U-Boot,V2,03/24] SPEAr: Place ethaddr write and read within CONFIG_CMD_NET

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Submitter Amit Virdi
Date March 30, 2012, 6:54 a.m.
Message ID <2b74a12da59a794ab02d6b07a70ac49eb8812eda.1333090211.git.amit.virdi@st.com>
Download mbox | patch
Permalink /patch/149552/
State Superseded
Delegated to: Stefan Roese
Headers show

Comments

Amit Virdi - March 30, 2012, 6:54 a.m.
From: Vipin KUMAR <vipin.kumar@st.com>

ethaddr can be optionally read from i2c memory. So, chip_config command supports
reading/writing hw mac id into i2c memory. Placing this code within
CONFIG_CMD_NET as this would only be needed when network interface is configured

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
---
 board/spear/common/spr_misc.c |   29 +++++++++++++++++++++--------
 doc/README.spear              |    8 ++++++++
 2 files changed, 29 insertions(+), 8 deletions(-)

Patch

diff --git a/board/spear/common/spr_misc.c b/board/spear/common/spr_misc.c
index be96c15..e2918ff 100644
--- a/board/spear/common/spr_misc.c
+++ b/board/spear/common/spr_misc.c
@@ -36,6 +36,10 @@ 
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#if defined(CONFIG_CMD_NET)
+static int i2c_read_mac(uchar *buffer);
+#endif
+
 int dram_init(void)
 {
 	/* Store complete RAM size and return */
@@ -136,6 +140,7 @@  int spear_board_init(ulong mach_type)
 	return 0;
 }
 
+#if defined(CONFIG_CMD_NET)
 static int i2c_read_mac(uchar *buffer)
 {
 	u8 buf[2];
@@ -172,17 +177,18 @@  static int write_mac(uchar *mac)
 		return 0;
 	}
 
-	puts("I2C EEPROM writing failed \n");
+	puts("I2C EEPROM writing failed\n");
 	return -1;
 }
+#endif
 
 int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	void (*sram_setfreq) (unsigned int, unsigned int);
+	unsigned int frequency;
+#if defined(CONFIG_CMD_NET)
 	unsigned char mac[6];
-	unsigned int reg, frequency;
-	char *s, *e;
-	char i2c_mac[20];
+#endif
 
 	if ((argc > 3) || (argc < 2))
 		return cmd_usage(cmdtp);
@@ -207,9 +213,12 @@  int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		}
 
 		return 0;
+
+#if defined(CONFIG_CMD_NET)
 	} else if (!strcmp(argv[1], "ethaddr")) {
 
-		s = argv[2];
+		u32 reg;
+		char *e, *s = argv[2];
 		for (reg = 0; reg < 6; ++reg) {
 			mac[reg] = s ? simple_strtoul(s, &e, 16) : 0;
 			if (s)
@@ -218,14 +227,15 @@  int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		write_mac(mac);
 
 		return 0;
+#endif
 	} else if (!strcmp(argv[1], "print")) {
+#if defined(CONFIG_CMD_NET)
 		if (!i2c_read_mac(mac)) {
-			sprintf(i2c_mac, "%pM", mac);
-			printf("Ethaddr (from i2c mem) = %s\n", i2c_mac);
+			printf("Ethaddr (from i2c mem) = %pM\n", mac);
 		} else {
 			printf("Ethaddr (from i2c mem) = Not set\n");
 		}
-
+#endif
 		return 0;
 	}
 
@@ -235,4 +245,7 @@  int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 U_BOOT_CMD(chip_config, 3, 1, do_chip_config,
 	   "configure chip",
 	   "chip_config cpufreq/ddrfreq frequency\n"
+#if defined(CONFIG_CMD_NET)
+	   "chip_config ethaddr XX:XX:XX:XX:XX:XX\n"
+#endif
 	   "chip_config print");
diff --git a/doc/README.spear b/doc/README.spear
index a8b1052..a6ff7fd 100644
--- a/doc/README.spear
+++ b/doc/README.spear
@@ -46,3 +46,11 @@  Further options
 	make FLASH=PNOR (supported by SPEAr310 and SPEAr320)
 	- This option generates a uboot image that supports emi controller for
 	CFI compliant parallel NOR flash
+
+Mac id storage and retrieval in spear platforms
+
+Please read doc/README.enetaddr for the implementation guidelines for mac id
+usage. Basically, environment has precedence over board specific storage. The
+ethaddr beeing used for the network interface is always taken only from
+environment variables. Although, we can check the mac id programmed in i2c
+memory by using chip_config command