From 3919aa1722a2b01683a8747e1eab1ec9f6de0f40 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 6 Dec 2021 21:58:09 +0100 Subject: ARM: dts: stm32: Add DFU support for DHCOR recovery This patch configures U-Boot SPL for DHCOR SoM to permit DFU upload of SPL and subsequent u-boot.itb for recovery or commissioning purposes. To start U-Boot on DHCOR based board, e.g. Avenger96, proceed as follows: - Install dfu-util on the host PC (in debian this is package 'dfu-util') - Power off the Avenger96 board. - Connect both USB-serial console and USB-OTG microB ports to host PC. - Switch Avenger96 to USB boot mode -- BOOT0..2 switches all set to 0. - Power on the Avenger96 board. - Verify using '$ dmesg' that a new device has been detected as follows: New USB device found, idVendor=0483, idProduct=df11, bcdDevice= 2.00 New USB device strings: Mfr=1, Product=2, SerialNumber=3 Product: DFU in HS Mode @Device ID /0x500, @Revision ID /0x0000 Manufacturer: STMicroelectronics - Upload U-Boot SPL: $ dfu-util -a 1 -D u-boot-spl.stm32 - Upload U-Boot proper: $ dfu-util -a 0 -D u-boot.itb - At this point, SPL will wait for user to press "Ctrl-C" on serial console. When ready to interact with U-Boot, press Ctrl-C to start the bootloader. Signed-off-by: Marek Vasut Cc: Patrice Chotard Cc: Patrick Delaunay Reviewed-by: Patrice Chotard --- include/configs/stm32mp15_dh_dhsom.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include') diff --git a/include/configs/stm32mp15_dh_dhsom.h b/include/configs/stm32mp15_dh_dhsom.h index c79f0272cbe..bb95480eeb2 100644 --- a/include/configs/stm32mp15_dh_dhsom.h +++ b/include/configs/stm32mp15_dh_dhsom.h @@ -11,6 +11,13 @@ /* PHY needs a longer autoneg timeout */ #define PHY_ANEG_TIMEOUT 20000 +#ifdef CONFIG_SPL_BUILD +#define CONFIG_EXTRA_ENV_SETTINGS \ + "dfu_alt_info_ram=u-boot.itb ram " \ + __stringify(CONFIG_SPL_LOAD_FIT_ADDRESS) \ + " 0x800000\0" +#endif + #define STM32MP_BOARD_EXTRA_ENV \ "usb_pgood_delay=1000\0" \ "update_sf=" /* Erase SPI NOR and install U-Boot from SD */ \ -- cgit v1.3.1