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