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https://github.com/brain-hackers/u-boot-brain
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![Stephen Warren](/assets/img/avatar_default.png)
When loading U-Boot into RAM over USB protocols using tools such as tegrarcm or L4T's exec-uboot.sh/tegraflash.py, Tegra's USB device mode controller is initialized and enumerated by the host PC running the tool. Unfortunately, these tools do not shut down the USB controller before executing the downloaded code, and so the host PC does not "de-enumerate" the USB device. This patch implements optional code to shut down the USB controller when U-Boot boots to avoid leaving a stale USB device present. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
78 lines
1.7 KiB
Plaintext
78 lines
1.7 KiB
Plaintext
if TEGRA
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config TEGRA_COMMON
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bool "Tegra common options"
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select DM
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select DM_ETH
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select DM_GPIO
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select DM_I2C
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select DM_KEYBOARD
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select DM_PCI
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select DM_PCI_COMPAT
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select DM_SERIAL
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select DM_SPI
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select DM_SPI_FLASH
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select OF_CONTROL
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config TEGRA_ARMV7_COMMON
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bool "Tegra 32-bit common options"
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select CPU_V7
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select SPL
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select SUPPORT_SPL
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select TEGRA_COMMON
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config TEGRA_ARMV8_COMMON
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bool "Tegra 64-bit common options"
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select ARM64
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select TEGRA_COMMON
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choice
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prompt "Tegra SoC select"
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optional
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config TEGRA20
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bool "Tegra20 family"
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select TEGRA_ARMV7_COMMON
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config TEGRA30
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bool "Tegra30 family"
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select TEGRA_ARMV7_COMMON
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config TEGRA114
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bool "Tegra114 family"
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select TEGRA_ARMV7_COMMON
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config TEGRA124
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bool "Tegra124 family"
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select TEGRA_ARMV7_COMMON
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config TEGRA210
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bool "Tegra210 family"
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select TEGRA_ARMV8_COMMON
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endchoice
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config TEGRA_DISCONNECT_UDC_ON_BOOT
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bool "Disconnect USB device mode controller on boot"
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default y
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help
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When loading U-Boot into RAM over USB protocols using tools such as
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tegrarcm or L4T's exec-uboot.sh/tegraflash.py, Tegra's USB device
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mode controller is initialized and enumerated by the host PC running
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the tool. Unfortunately, these tools do not shut down the USB
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controller before executing the downloaded code, and so the host PC
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does not "de-enumerate" the USB device. This option shuts down the
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USB controller when U-Boot boots to avoid leaving a stale USB device
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present.
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config SYS_MALLOC_F_LEN
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default 0x1800
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source "arch/arm/mach-tegra/tegra20/Kconfig"
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source "arch/arm/mach-tegra/tegra30/Kconfig"
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source "arch/arm/mach-tegra/tegra114/Kconfig"
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source "arch/arm/mach-tegra/tegra124/Kconfig"
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source "arch/arm/mach-tegra/tegra210/Kconfig"
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endif
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