| From 67db0da72eb7ed87ebaaeb8a26891cb2cf916500 Mon Sep 17 00:00:00 2001 |
| From: Luis Araneda <luaraneda@gmail.com> |
| Date: Sun, 21 Jul 2019 23:24:12 -0400 |
| Subject: [U-Boot] [PATCH] arm: zynq: read mac address from SPI flash memory |
| |
| Implement a method for reading the MAC address from an |
| SPI flash memory. |
| In particular, this method is used by the Zybo Z7 board |
| to read the MAC address from the OTP region in the SPI NOR |
| memory |
| |
| Signed-off-by: Luis Araneda <luaraneda@gmail.com> |
| --- |
| As of 2019-08-18, this patch has not been accepted by upstream U-Boot. |
| Keep this patch until an alternative is accepted by upstream. |
| --- |
| board/xilinx/common/board.c | 28 ++++++++++++++++++++++++++++ |
| configs/zynq_zybo_z7_defconfig | 3 +++ |
| drivers/misc/Kconfig | 17 +++++++++++++++++ |
| 3 files changed, 48 insertions(+) |
| |
| --- a/board/xilinx/common/board.c |
| +++ b/board/xilinx/common/board.c |
| @@ -6,7 +6,10 @@ |
| |
| #include <common.h> |
| #include <dm/uclass.h> |
| +#include <dm/device.h> |
| +#include <dm/device-internal.h> |
| #include <i2c.h> |
| +#include <spi_flash.h> |
| |
| int zynq_board_read_rom_ethaddr(unsigned char *ethaddr) |
| { |
| @@ -34,5 +37,30 @@ int zynq_board_read_rom_ethaddr(unsigned |
| debug("%s: I2C EEPROM MAC %pM\n", __func__, ethaddr); |
| #endif |
| |
| +#if defined(CONFIG_MAC_ADDR_IN_SPI_FLASH) |
| + struct spi_flash *flash; |
| + struct udevice *dev; |
| + |
| + ret = spi_flash_probe_bus_cs(CONFIG_SF_DEFAULT_BUS, |
| + CONFIG_SF_DEFAULT_CS, |
| + 0, 0, &dev); |
| + if (ret) { |
| + printf("SPI(bus:%u cs:%u) probe failed\n", |
| + CONFIG_SF_DEFAULT_BUS, |
| + CONFIG_SF_DEFAULT_CS); |
| + return 0; |
| + } |
| + |
| + flash = dev_get_uclass_priv(dev); |
| + flash->read_opcode = CONFIG_MAC_ADDR_SPI_FLASH_READ_CMD; |
| + |
| + if (spi_flash_read_dm(dev, |
| + CONFIG_MAC_ADDR_SPI_FLASH_DATA_OFFSET, |
| + 6, ethaddr)) |
| + printf("SPI MAC address read failed\n"); |
| + |
| + device_remove(dev, DM_REMOVE_NORMAL); |
| +#endif |
| + |
| return ret; |
| } |
| --- a/configs/zynq_zybo_z7_defconfig |
| +++ b/configs/zynq_zybo_z7_defconfig |
| @@ -42,6 +42,9 @@ CONFIG_DFU_RAM=y |
| CONFIG_FPGA_XILINX=y |
| CONFIG_FPGA_ZYNQPL=y |
| CONFIG_DM_GPIO=y |
| +CONFIG_MAC_ADDR_IN_SPI_FLASH=y |
| +CONFIG_MAC_ADDR_SPI_FLASH_READ_CMD=0x4b |
| +CONFIG_MAC_ADDR_SPI_FLASH_DATA_OFFSET=0x20 |
| CONFIG_MMC_SDHCI=y |
| CONFIG_MMC_SDHCI_ZYNQ=y |
| CONFIG_SPI_FLASH=y |
| --- a/drivers/misc/Kconfig |
| +++ b/drivers/misc/Kconfig |
| @@ -366,6 +366,23 @@ config SYS_I2C_EEPROM_ADDR_OVERFLOW |
| |
| endif |
| |
| +config MAC_ADDR_IN_SPI_FLASH |
| + bool "MAC address in SPI flash" |
| + help |
| + Read MAC address from an SPI flash memory |
| + |
| +if MAC_ADDR_IN_SPI_FLASH |
| + |
| +config MAC_ADDR_SPI_FLASH_READ_CMD |
| + hex "Read command for the SPI flash memory" |
| + default 0 |
| + |
| +config MAC_ADDR_SPI_FLASH_DATA_OFFSET |
| + hex "Offset of MAC data in SPI flash memory" |
| + default 0 |
| + |
| +endif |
| + |
| config GDSYS_RXAUI_CTRL |
| bool "Enable gdsys RXAUI control driver" |
| depends on MISC |