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(-)
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