[参考译文] TDA4VP-Q1：无法将 U-Boot 加载到定制电路板上的 EMMC

你好、Rachel、

实际上是中更改的偏移 示例 放大器。

抱歉。

您是否能够使用以下命令尝试新的偏移量。 我已按要求以粗体显示所需的更改。

=> MMC dev 0 1.
=> MMC 擦除0x0 0x 800
=> Loadb 0x82000000
通过 Kermit 发送 tiboot3.bin 文件

=> MMC 写入0x82000000 0x0 0x800
=> MMC 擦除 0x800 0x1000
=> Loadb 0x82000000
通过 Kermit 发送 tispl.bin_unsigned 文件
=> MMC 写入0x82000000 0x800 0x1000
=> MMC 擦除 0x1800 0x2000
=> Loadb 0x82000000
通过 Kermit 发送 u-boot.img_unsigned 文件
=> MMC 写入0x82000000 0x1800 0x2000

=> MMC partconf 0 1 1 1
=> MMC bootbus 0 2 0 0

尊敬的 Gokul：

感谢您的回答。

我更改了中的偏移  

configs/j784s4_evm_r5_defconfig：
-CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x800
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x400

在 configs/j784s4_evm_a72_defconfig 中：
-CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x1800
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x1400
在编译并刷写 U-Boot 文件之前、我认为偏移量不是问题。

 关闭电路板电源->更改为 EMMC 引导模式->打开电路板电源后、我从 EMMC 获得 U-boot

U-Boot SPL 2023.04-dirty (Nov 07 2024 - 09:02:49 +0200)
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed -121
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.4--v09.02.04 (Kool Koala)')
i2c_write: error waiting for data ACK (status=0x116)
tps6287x_regulator tps62873@40: CTRL2 reg read failed: -121
SPL initial stack usage: 13456 bytes
Trying to boot from MMC1
Loading Environment from nowhere... OK
init_env from device 17 not supported!
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b8-dirty
NOTICE:  BL31: Built : 07:38:16, Oct  8 2024
I/TC:
I/TC: OP-TEE version: 4.1.0-51-g012cdca49 (gcc version 13.2.1 20231009 (Arm GNU Toolchain 13.2.rel1 (Build arm-13.7))) #1 Tue Oct  8 10:50:04 UTC 2024 aarch64
I/TC: WARNING: This OP-TEE configuration might be insecure!
I/TC: WARNING: Please check optee.readthedocs.io/.../porting_guidelines.html
I/TC: Primary CPU initializing
I/TC: GIC redistributor base address not provided
I/TC: Assuming default GIC group status and modifier
I/TC: SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.4--v09.02.04 (Kool Koala)')
I/TC: HUK Initialized
I/TC: Activated SA2UL device
I/TC: Fixing SA2UL firewall owner for GP device
I/TC: Enabled firewalls for SA2UL TRNG device
I/TC: SA2UL TRNG initialized
I/TC: SA2UL Drivers initialized
I/TC: Primary CPU switching to normal world boot

U-Boot SPL 2023.04-dirty (Nov 07 2024 - 09:04:07 +0200)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.4--v09.02.04 (Kool Koala)')
Trying to boot from MMC1


U-Boot 2023.04-dirty (Nov 07 2024 - 09:04:07 +0200)

SoC:   J784S4 SR1.0 GP
Model: Texas Instruments J784S4 EVM
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed -121
Board: J784S4-EVM rev E1
DRAM:  2 GiB
idle-statesCore:  92 devices, 32 uclasses, devicetree: separate
Flash: 0 Bytes
MMC:   mmc@4f80000: 0, mmc@4fb0000: 1
Loading Environment from nowhere... OK
In:    serial@2820000
Out:   serial@2820000
Err:   serial@2820000
am65_cpsw_nuss ethernet@46000000: K3 CPSW: nuss_ver: 0x6BA02102 cpsw_ver: 0x6BA82102 ale_ver: 0x00293904 Ports:1 mdio_freq:1000000
EEPROM not available at 0x50, trying to read at 0x51
Reading on-board EEPROM at 0x51 failed -121
Net:   Rachel phy_init
Rachel CONFIG_PHY_FIXED
Rachel phy_fixed_init
am65_cpsw_nuss_port ethernet@46000000port@1: can't parse phy-handle port 1 (-2)
eth0: ethernet@46000000port@1
Hit any key to stop autoboot:  0
=>

您以前在我的更新中能看到以下内容  吗？请告诉我它是否与 EXT_CSD[162]位有关？ 我需要写:mmc  rst-function 0 1 (根据 https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-j784s4/10_00_00_08/exports/docs/linux/Foundational_Components contoc.U-Boot/UG-Memory.html)?

如果是、那么该警告的含义是什么：  这是一个一次性写入字段。？ 能否再次刷写 EMMC？ 它会影响其他方面吗？  
当我通过软件进行复位时、从 EMMC 进行的引导卡在中间。

谢谢！
Rachel

你好、Rachel、

关闭电路板电源->更改为 EMMC 引导模式->打开电路板电源后、我从 EMMC 使用 U-boot。
它是否与  EXT_CSD[162]位相关？ 我需要写:mmc  rst-function 0 1 (根据 https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-j784s4/10_00_00_08/exports/docs/linux/Foundational_Components contoc.U-Boot/UG-Memory.html)?

如果是、那么该警告的含义是什么：  这是一个一次性写入字段。？ 能否再次刷写 EMMC？ 它会影响其他方面吗？  

否、这与 EXT_CSD[162]位无关。 该位负责在 EMMC 上电时复位 EMMC。

警告表示一旦该位置位、则不能将其清零、因为它是一次性写入字段。