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configs: meson64: add alternate USB DFU boot target

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Add boot over DFU RAM as an alternate to running script at
a fixed address like done today.

The main culprit is that it's not possible to do that
on G12A/Sm1 platforms due to changes in the USB boot protocol.

With this, U-Boot will present a DFU device with a ram slot where
the Host could write a fitImage or legacy U-Boot image, then with the
detach command boot will continue trying to boot the uploaded image.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20231023-usb-dfu-boot-v1-3-df9d121c67c1@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Neil Armstrong 2023-10-23 14:41:36 +02:00
parent 72f63d85fe
commit 4aa027b3f8
1 changed files with 26 additions and 0 deletions
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26
include/configs/meson64.h
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@ -53,6 +53,30 @@
#define BOOTENV_DEV_NAME_ROMUSB(devtypeu, devtypel, instance) \
"romusb "
/*
* Fallback to "USB DFU" boot if script is not at scriptaddr
*
* DFU will expose the kernel_addr_r memory range as DFU entry,
* then with `dfu-util --detach`, booting the uploaded image
* will be attempted:
* $ dfu-util -a 0 -D fitImage
* $ dfu-util -a 0 -e
*/
#if CONFIG_IS_ENABLED(USB_GADGET) && CONFIG_IS_ENABLED(DFU_RAM)
#define BOOTENV_DEV_USB_DFU(devtypeu, devtypel, instance) \
"bootcmd_usbdfu=" \
"if test \"${boot_source}\" = \"usb\"; then " \
"dfu 0 ram 0 60;" \
"bootm ${kernel_addr_r};" \
"fi\0"
#define BOOTENV_DEV_NAME_USB_DFU(devtypeu, devtypel, instance) \
"usbdfu "
#else
#define BOOTENV_DEV_USB_DFU(devtypeu, devtypel, instance)
#define BOOTENV_DEV_NAME_USB_DFU(devtypeu, devtypel, instance)
#endif
#ifdef CONFIG_CMD_USB
#define BOOT_TARGET_DEVICES_USB(func) func(USB, usb, 0)
#else
@ -74,6 +98,7 @@
#ifndef BOOT_TARGET_DEVICES
#define BOOT_TARGET_DEVICES(func) \
func(ROMUSB, romusb, na) \
func(USB_DFU, usbdfu, na) \
func(MMC, mmc, 0) \
func(MMC, mmc, 1) \
func(MMC, mmc, 2) \
@ -109,6 +134,7 @@
"fdtoverlay_addr_r=" FDTOVERLAY_ADDR_R "\0" \
"ramdisk_addr_r=" RAMDISK_ADDR_R "\0" \
"fdtfile=amlogic/" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
"dfu_alt_info=fitimage ram " KERNEL_ADDR_R " 0x4000000 \0" \
BOOTENV
#endif