| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | From 67db0da72eb7ed87ebaaeb8a26891cb2cf916500 Mon Sep 17 00:00:00 2001 |
| 2 | From: Luis Araneda <luaraneda@gmail.com> |
| 3 | Date: Sun, 21 Jul 2019 23:24:12 -0400 |
| 4 | Subject: [U-Boot] [PATCH] arm: zynq: read mac address from SPI flash memory |
| 5 | |
| 6 | Implement a method for reading the MAC address from an |
| 7 | SPI flash memory. |
| 8 | In particular, this method is used by the Zybo Z7 board |
| 9 | to read the MAC address from the OTP region in the SPI NOR |
| 10 | memory |
| 11 | |
| 12 | Signed-off-by: Luis Araneda <luaraneda@gmail.com> |
| 13 | --- |
| 14 | As of 2019-08-18, this patch has not been accepted by upstream U-Boot. |
| 15 | Keep this patch until an alternative is accepted by upstream. |
| 16 | --- |
| 17 | board/xilinx/common/board.c | 28 ++++++++++++++++++++++++++++ |
| 18 | configs/zynq_zybo_z7_defconfig | 3 +++ |
| 19 | drivers/misc/Kconfig | 17 +++++++++++++++++ |
| 20 | 3 files changed, 48 insertions(+) |
| 21 | |
| 22 | --- a/board/xilinx/common/board.c |
| 23 | +++ b/board/xilinx/common/board.c |
| 24 | @@ -6,7 +6,10 @@ |
| 25 | |
| 26 | #include <common.h> |
| 27 | #include <dm/uclass.h> |
| 28 | +#include <dm/device.h> |
| 29 | +#include <dm/device-internal.h> |
| 30 | #include <i2c.h> |
| 31 | +#include <spi_flash.h> |
| 32 | |
| 33 | int zynq_board_read_rom_ethaddr(unsigned char *ethaddr) |
| 34 | { |
| 35 | @@ -34,5 +37,30 @@ int zynq_board_read_rom_ethaddr(unsigned |
| 36 | debug("%s: I2C EEPROM MAC %pM\n", __func__, ethaddr); |
| 37 | #endif |
| 38 | |
| 39 | +#if defined(CONFIG_MAC_ADDR_IN_SPI_FLASH) |
| 40 | + struct spi_flash *flash; |
| 41 | + struct udevice *dev; |
| 42 | + |
| 43 | + ret = spi_flash_probe_bus_cs(CONFIG_SF_DEFAULT_BUS, |
| 44 | + CONFIG_SF_DEFAULT_CS, |
| 45 | + 0, 0, &dev); |
| 46 | + if (ret) { |
| 47 | + printf("SPI(bus:%u cs:%u) probe failed\n", |
| 48 | + CONFIG_SF_DEFAULT_BUS, |
| 49 | + CONFIG_SF_DEFAULT_CS); |
| 50 | + return 0; |
| 51 | + } |
| 52 | + |
| 53 | + flash = dev_get_uclass_priv(dev); |
| 54 | + flash->read_opcode = CONFIG_MAC_ADDR_SPI_FLASH_READ_CMD; |
| 55 | + |
| 56 | + if (spi_flash_read_dm(dev, |
| 57 | + CONFIG_MAC_ADDR_SPI_FLASH_DATA_OFFSET, |
| 58 | + 6, ethaddr)) |
| 59 | + printf("SPI MAC address read failed\n"); |
| 60 | + |
| 61 | + device_remove(dev, DM_REMOVE_NORMAL); |
| 62 | +#endif |
| 63 | + |
| 64 | return ret; |
| 65 | } |
| 66 | --- a/configs/zynq_zybo_z7_defconfig |
| 67 | +++ b/configs/zynq_zybo_z7_defconfig |
| 68 | @@ -42,6 +42,9 @@ CONFIG_DFU_RAM=y |
| 69 | CONFIG_FPGA_XILINX=y |
| 70 | CONFIG_FPGA_ZYNQPL=y |
| 71 | CONFIG_DM_GPIO=y |
| 72 | +CONFIG_MAC_ADDR_IN_SPI_FLASH=y |
| 73 | +CONFIG_MAC_ADDR_SPI_FLASH_READ_CMD=0x4b |
| 74 | +CONFIG_MAC_ADDR_SPI_FLASH_DATA_OFFSET=0x20 |
| 75 | CONFIG_MMC_SDHCI=y |
| 76 | CONFIG_MMC_SDHCI_ZYNQ=y |
| 77 | CONFIG_SPI_FLASH=y |
| 78 | --- a/drivers/misc/Kconfig |
| 79 | +++ b/drivers/misc/Kconfig |
| 80 | @@ -366,6 +366,23 @@ config SYS_I2C_EEPROM_ADDR_OVERFLOW |
| 81 | |
| 82 | endif |
| 83 | |
| 84 | +config MAC_ADDR_IN_SPI_FLASH |
| 85 | + bool "MAC address in SPI flash" |
| 86 | + help |
| 87 | + Read MAC address from an SPI flash memory |
| 88 | + |
| 89 | +if MAC_ADDR_IN_SPI_FLASH |
| 90 | + |
| 91 | +config MAC_ADDR_SPI_FLASH_READ_CMD |
| 92 | + hex "Read command for the SPI flash memory" |
| 93 | + default 0 |
| 94 | + |
| 95 | +config MAC_ADDR_SPI_FLASH_DATA_OFFSET |
| 96 | + hex "Offset of MAC data in SPI flash memory" |
| 97 | + default 0 |
| 98 | + |
| 99 | +endif |
| 100 | + |
| 101 | config GDSYS_RXAUI_CTRL |
| 102 | bool "Enable gdsys RXAUI control driver" |
| 103 | depends on MISC |