[PATCH] arm: rockchip: add support for CM3 on IO board
Rouven Czerwinski
r.czerwinski at pengutronix.de
Sat Mar 18 09:06:35 PDT 2023
From: Rouven Czerwinski <rouven at czerwinskis.de>
Working:
- RKBIN DDR training (rk3566_ddr_1056MHz_v1.13.bin)
- RKBIN TF-A (v1.34) from RKBIN
- Environment storage
- DHCP, ping and link detection
Signed-off-by: Rouven Czerwinski <rouven at czerwinskis.de>
---
arch/arm/boards/Makefile | 1 +
arch/arm/boards/radxa-cm3/.gitignore | 1 +
arch/arm/boards/radxa-cm3/Makefile | 3 ++
arch/arm/boards/radxa-cm3/board.c | 56 ++++++++++++++++++++++++++++
arch/arm/boards/radxa-cm3/lowlevel.c | 50 +++++++++++++++++++++++++
arch/arm/dts/Makefile | 1 +
arch/arm/dts/rk3566-cm3-io.dts | 55 +++++++++++++++++++++++++++
arch/arm/mach-rockchip/Kconfig | 6 +++
images/Makefile.rockchip | 7 ++++
9 files changed, 180 insertions(+)
create mode 100644 arch/arm/boards/radxa-cm3/.gitignore
create mode 100644 arch/arm/boards/radxa-cm3/Makefile
create mode 100644 arch/arm/boards/radxa-cm3/board.c
create mode 100644 arch/arm/boards/radxa-cm3/lowlevel.c
create mode 100644 arch/arm/dts/rk3566-cm3-io.dts
diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile
index 37b1650e63..b204c257f6 100644
--- a/arch/arm/boards/Makefile
+++ b/arch/arm/boards/Makefile
@@ -190,3 +190,4 @@ obj-$(CONFIG_MACH_RK3568_BPI_R2PRO) += rockchip-rk3568-bpi-r2pro/
obj-$(CONFIG_MACH_PINE64_QUARTZ64) += pine64-quartz64/
obj-$(CONFIG_MACH_RADXA_ROCK3) += radxa-rock3/
obj-$(CONFIG_MACH_VARISCITE_DT8MCUSTOMBOARD_IMX8MP) += variscite-dt8mcustomboard-imx8mp/
+obj-$(CONFIG_MACH_RADXA_CM3) += radxa-cm3/
diff --git a/arch/arm/boards/radxa-cm3/.gitignore b/arch/arm/boards/radxa-cm3/.gitignore
new file mode 100644
index 0000000000..f458f794b5
--- /dev/null
+++ b/arch/arm/boards/radxa-cm3/.gitignore
@@ -0,0 +1 @@
+sdram-init.bin
diff --git a/arch/arm/boards/radxa-cm3/Makefile b/arch/arm/boards/radxa-cm3/Makefile
new file mode 100644
index 0000000000..b37b6c870b
--- /dev/null
+++ b/arch/arm/boards/radxa-cm3/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-y += board.o
+lwl-y += lowlevel.o
diff --git a/arch/arm/boards/radxa-cm3/board.c b/arch/arm/boards/radxa-cm3/board.c
new file mode 100644
index 0000000000..14b6784179
--- /dev/null
+++ b/arch/arm/boards/radxa-cm3/board.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <bootsource.h>
+#include <common.h>
+#include <deep-probe.h>
+#include <init.h>
+#include <mach/rockchip/bbu.h>
+
+struct cm3_model {
+ const char *name;
+ const char *shortname;
+};
+
+static int cm3_probe(struct device *dev)
+{
+ enum bootsource bootsource = bootsource_get();
+ int instance = bootsource_get_instance();
+ const struct cm3_model *model;
+
+ model = device_get_match_data(dev);
+
+ barebox_set_model(model->name);
+ barebox_set_hostname(model->shortname);
+
+ if (bootsource == BOOTSOURCE_MMC && instance == 1)
+ of_device_enable_path("/chosen/environment-sd");
+ else
+ of_device_enable_path("/chosen/environment-emmc");
+
+ rk3568_bbu_mmc_register("emmc", BBU_HANDLER_FLAG_DEFAULT,
+ "/dev/mmc0");
+ rk3568_bbu_mmc_register("sd", 0, "/dev/mmc1");
+
+ return 0;
+}
+
+static const struct cm3_model cm3_io = {
+ .name = "Radxa CM3 on IO Board",
+ .shortname = "cm3-io",
+};
+
+static const struct of_device_id cm3_of_match[] = {
+ {
+ .compatible = "radxa,cm3-io",
+ .data = &cm3_io,
+ },
+ { /* sentinel */ },
+};
+
+static struct driver cm3_io_board_driver = {
+ .name = "board-cm3-io",
+ .probe = cm3_probe,
+ .of_compatible = cm3_of_match,
+};
+coredevice_platform_driver(cm3_io_board_driver);
+
+BAREBOX_DEEP_PROBE_ENABLE(cm3_of_match);
diff --git a/arch/arm/boards/radxa-cm3/lowlevel.c b/arch/arm/boards/radxa-cm3/lowlevel.c
new file mode 100644
index 0000000000..e25ba62bea
--- /dev/null
+++ b/arch/arm/boards/radxa-cm3/lowlevel.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <common.h>
+#include <linux/sizes.h>
+#include <asm/barebox-arm-head.h>
+#include <asm/barebox-arm.h>
+#include <mach/rockchip/hardware.h>
+#include <mach/rockchip/atf.h>
+#include <debug_ll.h>
+#include <mach/rockchip/rockchip.h>
+
+extern char __dtb_rk3566_cm3_io_start[];
+
+static noinline void rk3566_start(void)
+{
+ void *fdt = __dtb_rk3566_cm3_io_start;
+
+ /*
+ * Enable vccio4 1.8V and vccio6 1.8V
+ * Needed for GMAC to work.
+ * FIXME: This is done by the io-domain driver as well, but there
+ * currently is no mechanism to make sure the driver gets probed
+ * before its consumers. Remove this setup once this issue is
+ * resolved.
+ */
+ writel(RK_SETBITS(0x50), 0xfdc20140);
+
+ if (current_el() == 3) {
+ rk3568_lowlevel_init();
+ rk3568_atf_load_bl31(fdt);
+ /* not reached */
+ }
+
+ barebox_arm_entry(RK3568_DRAM_BOTTOM, 0x80000000 - RK3568_DRAM_BOTTOM, fdt);
+}
+
+ENTRY_FUNCTION(start_radxa_cm3_io, r0, r1, r2)
+{
+ /*
+ * Image execution starts at 0x0, but this is used for ATF and
+ * OP-TEE later, so move away from here.
+ */
+ if (current_el() == 3)
+ relocate_to_adr_full(RK3568_BAREBOX_LOAD_ADDRESS);
+ else
+ relocate_to_current_adr();
+
+ setup_c();
+
+ rk3566_start();
+}
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 0a7cceb461..220e1617e3 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -109,6 +109,7 @@ lwl-$(CONFIG_MACH_PROTONIC_STM32MP1) += \
stm32mp151-prtt1s.dtb.o
lwl-$(CONFIG_MACH_RADXA_ROCK) += rk3188-radxarock.dtb.o
lwl-$(CONFIG_MACH_RADXA_ROCK3) += rk3568-rock-3a.dtb.o
+lwl-$(CONFIG_MACH_RADXA_CM3) += rk3566-cm3-io.dtb.o
lwl-$(CONFIG_MACH_PHYTEC_SOM_RK3288) += rk3288-phycore-som.dtb.o
lwl-$(CONFIG_MACH_REALQ7) += imx6q-dmo-edmqmx6.dtb.o
lwl-$(CONFIG_MACH_RK3568_EVB) += rk3568-evb1-v10.dtb.o
diff --git a/arch/arm/dts/rk3566-cm3-io.dts b/arch/arm/dts/rk3566-cm3-io.dts
new file mode 100644
index 0000000000..81f896b943
--- /dev/null
+++ b/arch/arm/dts/rk3566-cm3-io.dts
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include <arm64/rockchip/rk3566-radxa-cm3-io.dts>
+#include "rk356x.dtsi"
+
+/ {
+ chosen: chosen {
+ environment-sd {
+ compatible = "barebox,environment";
+ device-path = &environment_sd;
+ status = "disabled";
+ };
+
+ environment-emmc {
+ compatible = "barebox,environment";
+ device-path = &environment_emmc;
+ status = "disabled";
+ };
+ };
+
+ memory at a00000 {
+ device_type = "memory";
+ reg = <0x0 0x00a00000 0x0 0x7f600000>;
+ };
+};
+
+&sdhci {
+ no-sd;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ environment_emmc: partition at 408000 {
+ label = "barebox-environment";
+ reg = <0x0 0x408000 0x0 0x8000>;
+ };
+ };
+};
+
+&sdmmc0 {
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ environment_sd: partition at 408000 {
+ label = "barebox-environment";
+ reg = <0x0 0x408000 0x0 0x8000>;
+ };
+ };
+};
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 4ac75ab947..0d3bbebaad 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -86,6 +86,12 @@ config MACH_RADXA_ROCK3
help
Say Y here if you are using a Radxa ROCK3
+config MACH_RADXA_CM3
+ select ARCH_RK3568
+ bool "Radxa CM3"
+ help
+ Say Y here if you are using a Radxa CM3
+
comment "select board features:"
config ARCH_ROCKCHIP_ATF
diff --git a/images/Makefile.rockchip b/images/Makefile.rockchip
index 33c76caf79..490e1ddb4d 100644
--- a/images/Makefile.rockchip
+++ b/images/Makefile.rockchip
@@ -23,6 +23,9 @@ image-$(CONFIG_MACH_PINE64_QUARTZ64) += barebox-quartz64a.img
pblb-$(CONFIG_MACH_RADXA_ROCK3) += start_rock3a
image-$(CONFIG_MACH_RADXA_ROCK3) += barebox-rock3a.img
+pblb-$(CONFIG_MACH_RADXA_CM3) += start_radxa-cm3-io.img
+image-$(CONFIG_MACH_RADXA_CM3) += barebox-radxa-cm3-io.img
+
quiet_cmd_rkimg_image = RK-IMG $@
cmd_rkimg_image = $(objtree)/scripts/rkimage -o $@ $(word 2,$^) $(word 1,$^)
@@ -41,3 +44,7 @@ $(obj)/barebox-quartz64a.img: $(obj)/start_quartz64a.pblb \
$(obj)/barebox-rock3a.img: $(obj)/start_rock3a.pblb \
$(board)/radxa-rock3/sdram-init.bin
$(call if_changed,rkimg_image)
+
+$(obj)/barebox-radxa-cm3-io.img: $(obj)/start_radxa_cm3_io.pblb \
+ $(board)/radxa-cm3/sdram-init.bin
+ $(call if_changed,rkimg_image)
--
2.39.2
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