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ARM64: zynqmp: Add support for reading MAC from eeprom

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Add support for on board eeprom with programmed MAC for using in u-boot
to have uniq address for every board.
Most of the time uniq MAC address is on a label on the board.
If address is not programmed use these command to program it.

On zcu102:
ZynqMP> mm.b 0
00000000: 00 ? 00
00000001: a0 ? 0a
00000002: 35 ? 35
00000003: 02 ? 02
00000004: 00 ? ef
00000005: 00 ? 67
00000006: 00 ? q
i2c dev 5
i2c write 0 54 20 6
i2c md 54 20

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Michal Simek 2016-04-22 11:48:49 +02:00
parent a1207de0e6
commit 6919b4bf36
2 changed files with 23 additions and 0 deletions
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17
board/xilinx/zynqmp/zynqmp.c
View File

@ -15,6 +15,7 @@
#include <asm/io.h>
#include <usb.h>
#include <dwc3-uboot.h>
#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
@ -50,6 +51,22 @@ int board_early_init_r(void)
return 0;
}
int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
{
#if defined(CONFIG_ZYNQ_GEM_EEPROM_ADDR) && \
defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET) && \
defined(CONFIG_ZYNQ_EEPROM_BUS)
i2c_set_bus_num(CONFIG_ZYNQ_EEPROM_BUS);
if (eeprom_read(CONFIG_ZYNQ_GEM_EEPROM_ADDR,
CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET,
ethaddr, 6))
printf("I2C EEPROM MAC address read failed\n");
#endif
return 0;
}
#if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE)
/*
* fdt_get_reg - Fill buffer by information from DT

6
include/configs/xilinx_zynqmp_zcu102.h
View File

@ -48,6 +48,12 @@
#define CONFIG_IDENT_STRING " Xilinx ZynqMP ZCU102"
#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 1
#define CONFIG_CMD_EEPROM
#define CONFIG_ZYNQ_EEPROM_BUS 5
#define CONFIG_ZYNQ_GEM_EEPROM_ADDR 0x54
#define CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET 0x20
#define CONFIG_KERNEL_FDT_OFST_SIZE \
"kernel_offset=0x180000\0" \
"fdt_offset=0x100000\0" \