配置主要是官方zedboard进行配置，便于开发的目的，fpga的bit的文件和BOOT.bin分开

使用QSPI需要进行分区设置

/*
 * QSPI 256Mbit(32MByte) flash mapping
 *
 *   start       end      size     name
 * ---------------------------------------
 * 0x0000000 - 0x0100000  0x100000  boot.bin(1MB)
 * 0x0100000 - 0x0700000  0x600000  uImage(6MB)
 * 0x0700000 - 0x0720000  0x020000  devicetree(128KB)
 * 0x0720000 - 0x0D00000  0x5E0000  ramdisk(5.875MB)
 * 0x0D00000 - 0x1500000  0x800000  bitstream(8MB)
 * 0x1500000 - 0x2000000  0x6C0000  data(6.75MB)
 */

修改kernel->arch/arm/boot/dts/zynq-zed.dts

memory {
device_type = "memory";
reg = <0x0 0x1c000000>;
};
chosen {
bootargs = "console=ttyPS0,115200 root=/dev/mmcblk0p1 rw earlyprintk rootfstype=ext3 rootwait devtmpfs.mount=0";
/*bootargs = "console=ttyPS0,115200 root=/dev/ram rw initrd=0x800000,8M earlyprintk rootwait devtmpfs.mount=1";*/
/*bootargs = "console=ttyPS0,115200 root=/dev/ram rw earlyprintk";*/
linux,stdout-path = &uart1;
stdout-path = &uart1;
};

&qspi {
status = "okay";
is-dual = <0>;
num-cs = <1>;
xlnx,fb-clk = <0x1>;
xlnx,qspi-mode = <0x0>;
flash@0 {
/*compatible = "n25q128a11";*/
compatible = "s25fl256s1";
reg = <0x0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <4>;
spi-max-frequency = <50000000>;
#address-cells = <1>;
#size-cells = <1>;
partition@qspi-fsbl-uboot {
  label = "qspi-fsbl-uboot";
  reg = <0x0 0x100000>;
};

partition@qspi-linux {
  label = "qspi-linux";
  reg = <0x100000 0x600000>;
};

partition@qspi-device-tree {
  label = "qspi-device-tree";
  reg = <0x700000 0x20000>;
};

partition@qspi-rootfs {
  label = "qspi-rootfs";
  reg = <0x720000 0x5E0000>;
};

partition@qspi-bitstream {
  label = "qspi-bitstream";
  reg = <0xD00000 0x800000>;
};

partition@qspi-data {
label = "data";
reg = <0x1500000 0xB00000>;
};
};
};

修改uboot->arch/arm/dts/zynq-zed.dts

memory {
device_type = "memory";
reg = <0x0 0x1c000000>;
};

&qspi {
u-boot,dm-pre-reloc;
status = "okay";
is-dual = <0>;
num-cs = <1>;

flash@0 {
compatible = "s25fl256s1";
reg = <0x0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <4>;
spi-max-frequency = <50000000>;
#address-cells = <1>;
#size-cells = <1>;
partition@qspi-fsbl-uboot {
  label = "qspi-fsbl-uboot";
  reg = <0x0 0x100000>;
};

partition@qspi-linux {
  label = "qspi-linux";
  reg = <0x100000 0x600000>;
};

partition@qspi-device-tree {
  label = "qspi-device-tree";
  reg = <0x700000 0x20000>;
};

partition@qspi-rootfs {
  label = "qspi-rootfs";
  reg = <0x720000 0x5E0000>;
};

partition@qspi-bitstream {
  label = "qspi-bitstream";
  reg = <0xD00000 0x800000>;
};

partition@qspi-data {
  label = "data";
  reg = <0x1500000 0xB00000>;
};
};
};

include/configs/zynq-common.h

"loadbit_addr=0x200000"
"qspiboot=echo Copying Linux from QSPI flash... && "
"sf probe 0 && "
"sf read ${loadbit_addr} 0xd00000 0x800000 && "
"fpga loadb 0 ${loadbit_addr} 0x800000 && "
"sf read ${kernel_load_address} 0x100000 ${kernel_size} && "
"sf read ${devicetree_load_address} 0x700000 ${devicetree_size} && "
"echo Runing Kernel... && "
"bootm ${kernel_load_address} - ${devicetree_load_address}"

sf具体用法 - SPI flash sub-system

Usage:
sf probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus
                                  and chip select
sf read addr offset len - read `len' bytes starting at
                                  `offset' to memory at `addr'
sf write addr offset len        - write `len' bytes from memory
                                  at `addr' to flash at `offset'
sf erase offset [+]len          - erase `len' bytes from `offset'
                                  `+len' round up `len' to block size
sf update addr offset len       - erase and write `len' bytes from memory
                                  at `addr' to flash at `offset'

sf probe 0 50000000 配置SPI 50M速率

TF卡uEnv.txt

bootargs=console=ttyPS0,115200 root=/dev/mmcblk0p1 rw earlyprintk rootfstype=ext3 rootwait