rock-pi-s: add

ROCK Pi S is a Rockchip RK3308 based SBC from Radxa. It contains a 64-bit
quad core processor, USB, ethernet, wireless connectivity, and voice
detection engine in 1.7-inches square. The ROCK Pi S comes in two RAM sizes
256MB or 512MB DDR3, and uses an sdmmc card for OS and storage. Optionally,
some versions of the ROCK Pi S provide on-board storage via 1Gb/2Gb/4Gb/8Gb
of SLC NAND flash.

"S" stands for "small square" since the total board size of the rock-pi-s
is 1.7-inches square.

This BSP assumes booting from sdmmc, and using ttyS0 for the serial console
(similar to Raspberry Pi).

The latest version of the binary ddr initializer code from rkbin does not
provide a uart0 option, therefore all diagnostic output from rkbin and u-boot
is lost on the console (and replaced with a stream of gibberish until the
Linux kernel starts). Therefore, by default, the build assumes the user would
prefer to see this information and have the option to interact with U-Boot,
which means an older version of rkbin is used. The user can override this
decision by setting:

	RKBIN_RK3308_LATEST = "1"

Signed-off-by: Trevor Woerner <twoerner@gmail.com>

README

@@ -33,11 +33,33 @@ Status of supported boards:
 		rock-5b
 		nanopi-r2s
 		nanopi-m4b
+		rock-pi-s
 	builds:
 		marsboard-rk3066
 		radxarock
 		rock2-square
 
+Notes:
+-----
+	The latest ddr initializer for the rk3308 platform (currently only
+	used by the rock-pi-s machine) does not output diagnostic messages
+	to uart0. This causes a bunch of gibberish to be printed to the
+	console window which only becomes legible once the linux kernel
+	starts. I.e. the console output of the ddr initialization routine,
+	as well as u-boot is lost. An older version of this same binary
+	blob does, however, support output to uart0 (making its diagnostic
+	messages as well as u-boot available on the console). By default
+	the build assumes the user would like to see these message and be
+	able to have the option to interact with u-boot. Iow: for the
+	rock-pi-s an older version of rkbin is used.
+
+	If, however, the user would prefer to use the latest binary ddr
+	initializer from rkbin, simply set:
+
+		RKBIN_RK3308_LATEST = "1"
+	
+	in the configuration (e.g. conf/local.conf).
+
 Maintenance:
 -----------
 	Please send pull requests, patches, comments, or questions to the

conf/machine/include/rk3308.inc

@@ -0,0 +1,18 @@
+SOC_FAMILY = "rk3308"
+
+DEFAULTTUNE ?= "cortexa35-crypto"
+
+require conf/machine/include/soc-family.inc
+require conf/machine/include/arm/armv8a/tune-cortexa35.inc
+require conf/machine/include/rockchip-defaults.inc
+require conf/machine/include/rockchip-wic.inc
+
+SERIAL_CONSOLES = "1500000;ttyS0"
+
+KBUILD_DEFCONFIG ?= "defconfig"
+KERNEL_FEATURES:append:rk3308 = " bsp/rockchip/remove-non-rockchip-arch-arm64.scc"
+KERNEL_CLASSES = "kernel-fitimage"
+KERNEL_IMAGETYPE = "fitImage"
+
+UBOOT_SUFFIX ?= "itb"
+UBOOT_ENTRYPOINT ?= "0x06000000"

conf/machine/rock-pi-s.conf

@@ -0,0 +1,11 @@
+#@TYPE: Machine
+#@NAME: Radxa Rock Pi S
+#@DESCRIPTION: ROCK Pi S is a Rockchip RK3308 based SBC by Radxa. "S" stands for "small square"
+#https://wiki.radxa.com/RockpiS
+
+require conf/machine/include/rk3308.inc
+
+KERNEL_DEVICETREE = "rockchip/rk3308-rock-pi-s.dtb"
+MACHINE_EXTRA_RRECOMMENDS += "kernel-modules"
+
+UBOOT_MACHINE = "rock-pi-s-rk3308_defconfig"

recipes-bsp/rkbin/rk3308-rkbin_git.bb

@@ -0,0 +1,41 @@
+DESCRIPTION = "Rockchip Firmware and Tool Binaries"
+LICENSE = "CLOSED"
+LIC_FILES_CHKSUM:rk3308 = "file://README;md5=39cc9df955478b8df26158d489fdcc95"
+
+SRC_URI = "git://github.com/rockchip-linux/rkbin;protocol=https;branch=master"
+SRCREV = "e65b97b511f1349156702db40694454c141d8fe2"
+
+PROVIDES += "trusted-firmware-a"
+PROVIDES += "optee-os"
+
+inherit bin_package deploy
+
+S = "${WORKDIR}/git"
+
+COMPATIBLE_MACHINE = "^$"
+COMPATIBLE_MACHINE:rk3308 = "rk3308"
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+
+do_install() {
+	# Nothing in this recipe is useful in a filesystem
+	:
+}
+
+PACKAGES = "${PN}"
+ALLOW_EMPTY:${PN} = "1"
+
+do_deploy:rk3308() {
+	# Prebuilt TF-A
+	install -m 644 ${S}/bin/rk33/rk3308_bl31_v*.elf ${DEPLOYDIR}/bl31-rk3308.elf
+	# Prebuilt OPTEE-OS
+	install -m 644 ${S}/bin/rk33/rk3308_bl32_v*.bin ${DEPLOYDIR}/tee-rk3308.bin
+	# Prebuilt U-Boot TPL (DDR init)
+	install -m 644 ${S}/bin/rk33/rk3308_ddr_589MHz_uart0_m0_v*.bin ${DEPLOYDIR}/ddr-rk3308.bin
+}
+
+do_deploy() {
+	bbfatal "COMPATIBLE_MACHINE requires a corresponding do_deploy:<MACHINE>() override"
+}
+
+addtask deploy after do_install

recipes-bsp/rkbin/rockchip-rkbin_git.bb

@@ -13,6 +13,7 @@ inherit bin_package deploy
 S = "${WORKDIR}/git"
 
 COMPATIBLE_MACHINE = "^$"
+COMPATIBLE_MACHINE:rk3308 = "rk3308"
 COMPATIBLE_MACHINE:rk3588s = "rk3588s"
 
 PACKAGE_ARCH = "${MACHINE_ARCH}"
@@ -25,6 +26,15 @@ do_install() {
 PACKAGES = "${PN}"
 ALLOW_EMPTY:${PN} = "1"
 
+do_deploy:rk3308() {
+	# Prebuilt TF-A
+	install -m 644 ${S}/bin/rk33/rk3308_bl31_v*.elf ${DEPLOYDIR}/bl31-rk3308.elf
+	# Prebuilt OPTEE-OS
+	install -m 644 ${S}/bin/rk33/rk3308_bl32_v*.bin ${DEPLOYDIR}/tee-rk3308.bin
+	# Prebuilt U-Boot TPL (DDR init)
+	install -m 644 ${S}/bin/rk33/rk3308_ddr_589MHz_uart?_m0_v*.bin ${DEPLOYDIR}/ddr-rk3308.bin
+}
+
 do_deploy:rk3588s() {
 	# Prebuilt TF-A
 	install -m 644 ${S}/bin/rk35/rk3588_bl31_v*.elf ${DEPLOYDIR}/bl31-rk3588.elf

recipes-bsp/u-boot/u-boot%.bbappend

@@ -1,8 +1,10 @@
 # various machines require the pyelftools library for parsing dtb files
 DEPENDS:append = " python3-pyelftools-native"
+DEPENDS:append:rock-pi-s = " u-boot-tools-native"
 DEPENDS:append:rock-pi-4 = " gnutls-native"
 
 EXTRA_OEMAKE:append:px30 = " BL31=${DEPLOY_DIR_IMAGE}/bl31-px30.elf"
+EXTRA_OEMAKE:append:rk3308 = " BL31=${DEPLOY_DIR_IMAGE}/bl31-rk3308.elf"
 EXTRA_OEMAKE:append:rk3328 = " BL31=${DEPLOY_DIR_IMAGE}/bl31-rk3328.elf"
 EXTRA_OEMAKE:append:rk3399 = " BL31=${DEPLOY_DIR_IMAGE}/bl31-rk3399.elf"
 EXTRA_OEMAKE:append:rk3588s = " \
@@ -12,6 +14,7 @@ EXTRA_OEMAKE:append:rk3588s = " \
 
 INIT_FIRMWARE_DEPENDS ??= ""
 INIT_FIRMWARE_DEPENDS:px30 = " trusted-firmware-a:do_deploy"
+INIT_FIRMWARE_DEPENDS:rk3308 = " ${@bb.utils.contains('RKBIN_RK3308_LATEST', '1', 'rockchip-rkbin', 'rk3308-rkbin', d)}:do_deploy"
 INIT_FIRMWARE_DEPENDS:rk3328 = " trusted-firmware-a:do_deploy"
 INIT_FIRMWARE_DEPENDS:rk3399 = " trusted-firmware-a:do_deploy"
 INIT_FIRMWARE_DEPENDS:rk3588s = " rockchip-rkbin:do_deploy"
@@ -23,3 +26,8 @@ do_compile:append:rock2-square () {
 		cp ${B}/spl/${SPL_BINARY} ${B}
 	fi
 }
+
+do_compile:append:rk3308() {
+	mkimage -n rk3308 -T rksd -d ${DEPLOY_DIR_IMAGE}/ddr-rk3308.bin ${B}/idbloader.img
+	cat ${B}/spl/u-boot-spl.bin >> ${B}/idbloader.img
+}

recipes-kernel/linux/linux-yocto_%.bbappend

@@ -15,6 +15,7 @@ COMPATIBLE_MACHINE:rock-pi-e = "rock-pi-e"
 COMPATIBLE_MACHINE:nanopi-r4s = "nanopi-r4s"
 COMPATIBLE_MACHINE:nanopi-r2s = "nanopi-r2s"
 COMPATIBLE_MACHINE:nanopi-m4b = "nanopi-m4b"
+COMPATIBLE_MACHINE:rock-pi-s = "rock-pi-s"
 
 SRC_URI:append = " file://rockchip-kmeta;type=kmeta;name=rockchip-kmeta;destsuffix=rockchip-kmeta"
 SRC_URI:append:nanopi-r4s = " file://nanopi-r4s.scc"