TI中文支持网Part Number:TDA4VM
问：默认 SDK 支持从 OSPI (OSPI0) 引导。如何从 QSPI（也称为 OSPI1）引导。需要在 u-boot 中
进行哪些更改？
Cherry Zhou：
答：是的，支持从 QSPI 引导。默认情况下，U-Boot/SPL 配置为从 OSPI(OSPI0) 引导。因此，我们需要在 U-Boot 目录中进行以下更改：
From fa016786d99db486f14c491927ad582eb940467b Mon Sep 17 00:00:00 2001
From: Keerthy <j-keerthy@ti.com>
Date: Thu, 2 Sep 2021 10:06:31 +0530
Subject: [PATCH] configs: Enable QSPI
Enable QSPI
Signed-off-by: Keerthy <j-keerthy@ti.com>
—
configs/j721e_evm_a72_defconfig | 1 +
configs/j721e_evm_r5_defconfig | 1 +
2 files changed, 2 insertions(+)
diff –git a/configs/j721e_evm_a72_defconfig b/configs/j721e_evm_a72_defconfig
index 8f16ae354e..8c9631cd24 100644
— a/configs/j721e_evm_a72_defconfig
+++ b/configs/j721e_evm_a72_defconfig
@@ -72,6 +72,7 @@ CONFIG_CMD_UBI=y
CONFIG_OF_CONTROL=y
CONFIG_SPL_OF_CONTROL=y
CONFIG_DEFAULT_DEVICE_TREE="k3-j721e-common-proc-board"
+CONFIG_SF_DEFAULT_BUS=1
CONFIG_OF_LIST="k3-j721e-common-proc-board k3-j721e-tps65917-proc-board"
CONFIG_SPL_MULTI_DTB_FIT=y
CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y
diff –git a/configs/j721e_evm_r5_defconfig b/configs/j721e_evm_r5_defconfig
index bb3d1a28c6..901d8b76ce 100644
— a/configs/j721e_evm_r5_defconfig
+++ b/configs/j721e_evm_r5_defconfig
@@ -60,6 +60,7 @@ CONFIG_CMD_FAT=y
CONFIG_OF_CONTROL=y
CONFIG_SPL_OF_CONTROL=y
CONFIG_DEFAULT_DEVICE_TREE="k3-j721e-r5-common-proc-board"
+CONFIG_SF_DEFAULT_BUS=1
CONFIG_ENV_IS_IN_MMC=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_DM=y
—
2.17.1
*****************************************************************************
cd $PSDKLA_PATH/board-support/u-boot-2020.01+gitAUTOINC+2781231a33-g2781231a33
git am 0001-configs-Enable-QSPI.patch.txt
cd ../..
make u-boot
cp board-support/u-boot_build/a72/tispl.bin board-support/u-boot_build/a72/u-boot.img board-support/prebuilt-binaries/sysfw.itb board-support/u-boot_build/r5/tiboot3.bin /media/$USER/boot/
将新编译的二进制文件复制到 SD 卡的引导分区中后，使用 SD Boot 引导至 u-boot 提示符：
DIP 开关设置：
SW8：10000010
SW9：00000000
引导至 U-Boot 提示符：
sf probe 1:0 /* this is for QSPI */
fatload mmc 1 ${loadaddr} tiboot3.bin; sf update $loadaddr 0x0 $filesize;
fatload mmc 1 ${loadaddr} tispl.bin; sf update $loadaddr 0x80000 $filesize;
fatload mmc 1 ${loadaddr} u-boot.img; sf update $loadaddr 0x280000 $filesize;
fatload mmc 1 ${loadaddr} sysfw.itb; sf update $loadaddr 0x6C0000 $filesize
刷写 QSPI 后，请关闭电路板并按如下所示更改 DIP 开关设置：
SW8：00000000
SW9：00100000
导通电路板。在从 SPI 引导时，您可以观察到以下情况：
U-Boot SPL 2020.01-00002-g8903f0640e-dirty (Aug 09 2021 – 15:42:23 +0530)
SYSFW ABI: 3.1 (firmware rev 0x0015 '21.1.1–v2021.01a (Terrific Lla')
Trying to boot from SPI
Loading Environment from MMC…*** Warning – No MMC card found, using default environment
Starting ATF on ARM64 core…
NOTICE: BL31: v2.4(release):07.03.00.005-dirty
NOTICE: BL31: Built : 00:15:40, Apr 10 2021
U-Boot SPL 2020.01-00002-g8903f0640e-dirty (Aug 09 2021 – 15:42:15 +0530)
SYSFW ABI: 3.1 (firmware rev 0x0015 '21.1.1–v2021.01a (Terrific Lla')
Detected: J7X-BASE-CPB rev E2
Detected: J7X-INFOTAN-EXP rev E3
Detected: J7X-VSC8514-ETH rev E2
Trying to boot from SPI
Can't get reset: -2
Software reset enable failed: -524
U-Boot 2020.01-00002-g8903f0640e-dirty (Aug 09 2021 – 15:42:15 +0530)
SoC: J721E SR1.0
Model: Texas Instruments K3 J721E SoC
Board: J721EX-PM2-SOM rev E6
DRAM: 4 GiB
not found for dev hbmc-mux
Flash: 0 Bytes
MMC: sdhci@4f80000: 0, sdhci@4fb0000: 1
Loading Environment from MMC…OK
In: serial@2800000
Out: serial@2800000
Err: serial@2800000
Detected: J7X-BASE-CPB rev E2
Detected: J7X-INFOTAN-EXP rev E3
Detected: J7X-VSC8514-ETH rev E2
Net: K3 CPSW: nuss_ver: 0x6BA00101 cpsw_ver: 0x6BA80100 ale_ver: 0x00293904 Ports:1 mdio_freq:1000000
Warning: ethernet@46000000 using MAC address from ROM
eth0: ethernet@46000000
Hit any key to stop autoboot: 0
