标签：read turn 方法 end option c中 ash rgba ++
错误现象：
原因分析：
\u-boot-xlnx-xilinx-v2018.1\u-boot-xlnx-xilinx-v2018.1\drivers\mtd\spi\ spi_flash.c中
static const struct spi_flash_info *spi_flash_read_id(struct spi_flash *flash) { int tmp; u8 id[SPI_FLASH_MAX_ID_LEN]; const struct spi_flash_info *info; #ifdef CONFIG_SPI_GENERIC if (flash->spi->option & SF_DUAL_PARALLEL_FLASH) flash->spi->flags |= SPI_XFER_LOWER; #endif tmp = spi_flash_cmd(flash->spi, CMD_READ_ID, id, SPI_FLASH_MAX_ID_LEN); if (tmp < 0) { printf("SF: error %d reading JEDEC ID\n", tmp); return ERR_PTR(tmp); } info = spi_flash_ids; for (; info->name != NULL; info++) { if (info->id_len) { if (!memcmp(info->id, id, info->id_len)) return info; } } printf("SF: unrecognized JEDEC id bytes: %02x, %02x, %02x\n", id[0], id[1], id[2]); return ERR_PTR(-ENODEV); }
spi_flash_read_id(struct spi_flash *flash)函数中需要读flashID，info = spi_flash_ids;对应的时ID列表，
u-boot-xlnx-xilinx-v2018.1\u-boot-xlnx-xilinx-v2018.1\drivers\mtd\spi\ spi_flash_ids.c中定义了
#ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */ {"mx25l2006e", INFO(0xc22012, 0x0, 64 * 1024, 4, 0) }, {"mx25l4005", INFO(0xc22013, 0x0, 64 * 1024, 8, 0) }, {"mx25l8005", INFO(0xc22014, 0x0, 64 * 1024, 16, 0) }, {"mx25l1605d", INFO(0xc22015, 0x0, 64 * 1024, 32, 0) }, {"mx25l3205d", INFO(0xc22016, 0x0, 64 * 1024, 64, 0) }, {"mx25l6405d", INFO(0xc22017, 0x0, 64 * 1024, 128, 0) }, {"mx25l12805", INFO(0xc22018, 0x0, 64 * 1024, 256, RD_FULL | WR_QPP) }, {"mx25l25635f", INFO(0xc22019, 0x0, 64 * 1024, 512, RD_FULL | WR_QPP) }, {"mx25l51235f", INFO(0xc2201a, 0x0, 64 * 1024, 1024, RD_FULL | WR_QPP) }, {"mx25u6435f", INFO(0xc22537, 0x0, 64 * 1024, 128, RD_FULL | WR_QPP) }, {"mx25l12855e", INFO(0xc22618, 0x0, 64 * 1024, 256, RD_FULL | WR_QPP) }, {"mx25u1635e", INFO(0xc22535, 0x0, 64 * 1024, 32, SECT_4K) }, {"mx66u51235f", INFO(0xc2253a, 0x0, 64 * 1024, 1024, RD_FULL | WR_QPP) }, {"mx66l1g45g", INFO(0xc2201b, 0x0, 64 * 1024, 2048, RD_FULL | WR_QPP) }, {"mx66u1g45g", INFO(0xc2253b, 0x0, 64 * 1024, 2048, RD_FULL | WR_QPP) }, #endif
因此生成u-boot的过程中，需要添加
CONFIG_SPI_FLASH_MACRONIX
解决方法：
在gedit configs/zynq_zed_defconfig 中添加
CONFIG_SPI_FLASH_MACRONIX=y
问题解决
zynq u-boot启动中提示SF: unrecognized JEDEC id bytes: c2, 20, 19
标签：read turn 方法 end option c中 ash rgba ++
原文地址：https://www.cnblogs.com/cqlc/p/13898146.html
