openwrt/target/linux/mpc85xx/image/spi-loader/config/tplink_tl-wdr4900-v1.mk

TEXT_START   := 0x800000

# It seems that the TP-Link TL-WDR4900 U-Boot does not flush the cache before
# jumping into the uImage. Padding the image to 32k seems make the boot work
# reliably.
#
# We leave 0x40 for the uImage header, which allows us to append the kernel
# uImage after the loader and read with an added offset 0x8000 from the
# SPI flash.
PAD_TO       := 0x807fc0

# Kernel begins at 0x60200 in flash, loader adds 0x8000
IMAGE_OFFSET := 0x68200
mpc85xx: add SPI kernel loader for TP-Link TL-WDR4900 v1 Similar to the lzma-loader on our MIPS targets, the spi-loader acts as a second-stage loader that will then load and start the actual kernel. As the TL-WDR4900 uses SPI-NOR and the P1010 family does not have support for memory mapping of this type of flash, this loader needs to contain a basic driver for the FSL ESPI controller. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> 2022-03-27 18:57:01 +00:00			`TEXT_START := 0x800000`

			`# It seems that the TP-Link TL-WDR4900 U-Boot does not flush the cache before`
			`# jumping into the uImage. Padding the image to 32k seems make the boot work`
			`# reliably.`
			`#`
			`# We leave 0x40 for the uImage header, which allows us to append the kernel`
			`# uImage after the loader and read with an added offset 0x8000 from the`
			`# SPI flash.`
			`PAD_TO := 0x807fc0`

			`# Kernel begins at 0x60200 in flash, loader adds 0x8000`
			`IMAGE_OFFSET := 0x68200`