diff --git a/recipes-kernel/linux/cmem.inc b/recipes-kernel/linux/cmem.inc new file mode 100644 index 00000000..742f3c80 --- /dev/null +++ b/recipes-kernel/linux/cmem.inc @@ -0,0 +1,23 @@ +SRC_URI += "file://cmem.dtsi" + +CMEM_BASE ?= "" +CMEM_SIZE ?= "" + +do_setup_cmem() { + if [ ! -z "${CMEM_BASE}" ] + then + cp ${WORKDIR}/cmem.dtsi ${S}/arch/arm/boot/dts/${MACHINE}-cmem.dtsi + + sed -i -e "s|__CMEM_BASE__|${CMEM_BASE}|g" \ + -e "s|__CMEM_SIZE__|${CMEM_SIZE}|g" \ + ${S}/arch/arm/boot/dts/${MACHINE}-cmem.dtsi + + for dtb in ${KERNEL_DEVICETREE} + do + dts=`echo $dtb | sed -e 's|dtb$|dts|'` + echo "#include \"${MACHINE}-cmem.dtsi\"" >> ${S}/arch/arm/boot/dts/$dts + done + fi +} + +do_patch[postfuncs] += "do_setup_cmem" diff --git a/recipes-kernel/linux/files/cmem.dtsi b/recipes-kernel/linux/files/cmem.dtsi new file mode 100644 index 00000000..6b1da990 --- /dev/null +++ b/recipes-kernel/linux/files/cmem.dtsi @@ -0,0 +1,24 @@ +/ { + reserved-memory { + cmem_block_mem_0: cmem_block_mem@__CMEM_BASE__ { + reg = <0x__CMEM_BASE__ 0x__CMEM_SIZE__>; + no-map; + status = "okay"; + }; + }; + + cmem { + compatible = "ti,cmem"; + #address-cells = <1>; + #size-cells = <0>; + + status = "okay"; + + cmem_block_0: cmem_block@0 { + reg = <0>; + memory-region = <&cmem_block_mem_0>; + cmem-buf-pools = <1 0x__CMEM_SIZE__>; + }; + }; + +};