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arm: mvebu: Add support for generating PEX kwbimage

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Add a new Kconfig option CONFIG_MVEBU_SPL_BOOT_DEVICE_PEX which instruct
make to generate kwbimage with PEX header. This image is used for booting
from PCI Express device which is in the Root Complex mode.

Support is very simple, SPL after finishes DDR training returns back to the
BootROM (via CONFIG_SPL_BOOTROM_SUPPORT option) and BootROM then start
executing U-Boot proper.

Signed-off-by: Pali Rohár <pali@kernel.org>
This commit is contained in:
Pali Rohár
2023-01-10 23:09:15 +01:00
committed by Stefan Roese
parent 67bd6158d4
commit 50afad5573
2 changed files with 7 additions and 0 deletions
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4
arch/arm/mach-mvebu/Kconfig
View File

@@ -363,6 +363,10 @@ config MVEBU_SPL_BOOT_DEVICE_SATA
imply SPL_LIBDISK_SUPPORT
select SPL_BOOTROM_SUPPORT
config MVEBU_SPL_BOOT_DEVICE_PEX
bool "PCI Express"
select SPL_BOOTROM_SUPPORT
config MVEBU_SPL_BOOT_DEVICE_UART
bool "UART"
select SPL_BOOTROM_SUPPORT

3
arch/arm/mach-mvebu/Makefile
View File

@@ -59,6 +59,9 @@ endif
ifneq ($(CONFIG_MVEBU_SPL_BOOT_DEVICE_SATA),)
KWB_CFG_BOOT_FROM=sata
endif
ifneq ($(CONFIG_MVEBU_SPL_BOOT_DEVICE_PEX),)
KWB_CFG_BOOT_FROM=pex
endif
ifneq ($(CONFIG_MVEBU_SPL_BOOT_DEVICE_UART),)
KWB_CFG_BOOT_FROM=uart
endif