[PATCH v6 0/4] Add Onion Omega2/2+ board support

[PATCH v6 0/4] Add Onion Omega2/2+ board support

[Philip Oberfichtner]

Add support for the MediaTek based boards by Onion. Commit one to three are
rather generic, whereas the last commit adds the actual board support.

Changes in v6:
	- Remove all vendor specific code from the board files.

Changes in v5:
	- Reimplement the Makefile size check.

Changes in v4:
	- Rebase board support to v2025.07
	- Add new commit to silence warning in arch/mips/

Changes in v3:
	- Simplify image size check.

Changes in v2:
	- I forgot to run checkpatch in v1. Fix some style issues in v2.

Philip Oberfichtner (4):
  Makefile: Simplify size check
  Makefile: Add size check for u-boot-with-spl.bin
  mips: serial: Silence "unused variable" warning
  mips: mt7628: Add Onion Omega2/2+ board support

 Makefile                                  | 45 ++++----------
 arch/mips/dts/Makefile                    |  1 +
 arch/mips/dts/onion-omega2p.dts           | 58 ++++++++++++++++++
 arch/mips/mach-mtmips/mt7620/serial.c     |  2 +-
 arch/mips/mach-mtmips/mt7621/spl/serial.c |  2 +-
 arch/mips/mach-mtmips/mt7628/Kconfig      |  7 +++
 arch/mips/mach-mtmips/mt7628/serial.c     |  2 +-
 board/onion/omega2p/Kconfig               | 12 ++++
 board/onion/omega2p/MAINTAINERS           |  6 ++
 common/spl/Kconfig                        |  7 +++
 configs/onion-omega2p_defconfig           | 73 +++++++++++++++++++++++
 include/configs/onion-omega2p.h           | 15 +++++
 tools/spl_size_limit.c                    |  2 +-
 13 files changed, 194 insertions(+), 38 deletions(-)
 create mode 100644 arch/mips/dts/onion-omega2p.dts
 create mode 100644 board/onion/omega2p/Kconfig
 create mode 100644 board/onion/omega2p/MAINTAINERS
 create mode 100644 configs/onion-omega2p_defconfig
 create mode 100644 include/configs/onion-omega2p.h

-- 
2.39.5

[PATCH v6 1/4] Makefile: Simplify size check

[Philip Oberfichtner]

Deduplicate some redundancies within the SIZE_CHECK code in the toplevel
Makefile. No functional changes.

Signed-off-by: Philip Oberfichtner <pro@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
---

Notes:
    Changes in v6: none
    
    Changes in v5:
    	- Fix for broken boards reported in v4
    	- See https://patchwork.ozlabs.org/project/uboot/patch/20250708103959.26129-2-pro@denx.de/

 Makefile               | 44 ++++++++++--------------------------------
 tools/spl_size_limit.c |  2 +-
 2 files changed, 11 insertions(+), 35 deletions(-)

diff --git a/Makefile b/Makefile
index 6ec2ce05928..69c37082610 100644
--- a/Makefile
+++ b/Makefile
@@ -432,7 +432,7 @@ KBUILD_HOSTLDLIBS   := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
 define size_check
 	actual=$$( wc -c $1 | awk '{print $$1}'); \
 	limit=$$( printf "%d" $2 ); \
-	if test $$actual -gt $$limit; then \
+	if test $$limit -gt 0 && test $$actual -gt $$limit; then \
 		echo "$1 exceeds file size limit:" >&2; \
 		echo "  limit:  $$(printf %#x $$limit) bytes" >&2; \
 		echo "  actual: $$(printf %#x $$actual) bytes" >&2; \
@@ -1103,30 +1103,6 @@ LDPPFLAGS += \
 #########################################################################
 #########################################################################
 
-ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
-BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
-else
-BOARD_SIZE_CHECK =
-endif
-
-ifneq ($(CONFIG_SPL_SIZE_LIMIT),0x0)
-SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit))
-else
-SPL_SIZE_CHECK =
-endif
-
-ifneq ($(CONFIG_TPL_SIZE_LIMIT),0x0)
-TPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_TPL_SIZE_LIMIT))
-else
-TPL_SIZE_CHECK =
-endif
-
-ifneq ($(CONFIG_VPL_SIZE_LIMIT),0x0)
-VPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_VPL_SIZE_LIMIT))
-else
-VPL_SIZE_CHECK =
-endif
-
 # Statically apply RELA-style relocations (currently arm64 only)
 # This is useful for arm64 where static relocation needs to be performed on
 # the raw binary, but certain simulators only accept an ELF file (but don't
@@ -1470,7 +1446,7 @@ endif
 
 %.imx: $(IMX_DEPS) %.bin
 	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
-	$(BOARD_SIZE_CHECK)
+	@ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
 
 %.vyb: %.imx
 	$(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
@@ -1571,11 +1547,11 @@ endif
 
 u-boot-nodtb.bin: u-boot FORCE
 	$(call if_changed,objcopy_uboot)
-	$(BOARD_SIZE_CHECK)
+	@ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
 
 u-boot.ldr:	u-boot
 		$(LDR) -T $(CONFIG_LDR_CPU) -c $@ $< $(LDR_FLAGS)
-		$(BOARD_SIZE_CHECK)
+		@ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
 
 # binman
 # ---------------------------------------------------------------------------
@@ -1702,7 +1678,7 @@ u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
 			$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SANDBOX),dts/dt.dtb) \
 		,$(UBOOT_BIN)) FORCE
 	$(call if_changed,mkimage)
-	$(BOARD_SIZE_CHECK)
+	@ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
 
 ifeq ($(CONFIG_SPL_LOAD_FIT_FULL),y)
 MKIMAGEFLAGS_u-boot.itb =
@@ -1717,12 +1693,12 @@ u-boot.itb: u-boot-nodtb.bin \
 		$(if $(CONFIG_MULTI_DTB_FIT),$(FINAL_DTB_CONTAINER)) \
 		$(U_BOOT_ITS) FORCE
 	$(call if_changed,mkfitimage)
-	$(BOARD_SIZE_CHECK)
+	@ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
 endif
 
 u-boot-with-spl.kwb: u-boot.bin spl/u-boot-spl.bin FORCE
 	$(call if_changed,mkimage)
-	$(BOARD_SIZE_CHECK)
+	@ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
 
 u-boot.dis:	u-boot
 		$(OBJDUMP) -d $< > $@
@@ -2346,7 +2322,7 @@ u-boot.lds: $(LDSCRIPT) prepare FORCE
 
 spl/u-boot-spl.bin: spl/u-boot-spl
 	@:
-	$(SPL_SIZE_CHECK)
+	@$(call size_check,$@,$$(tools/spl_size_limit))
 
 spl/u-boot-spl-dtb.bin: spl/u-boot-spl
 	@:
@@ -2371,14 +2347,14 @@ spl/boot.bin: spl/u-boot-spl
 
 tpl/u-boot-tpl.bin: tpl/u-boot-tpl
 	@:
-	$(TPL_SIZE_CHECK)
+	@$(call size_check,$@,$(CONFIG_TPL_SIZE_LIMIT))
 
 tpl/u-boot-tpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb)
 	$(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.xpl all
 
 vpl/u-boot-vpl.bin: vpl/u-boot-vpl
 	@:
-	$(VPL_SIZE_CHECK)
+	@$(call size_check,$@,$(CONFIG_VPL_SIZE_LIMIT))
 
 vpl/u-boot-vpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb)
 	$(Q)$(MAKE) obj=vpl -f $(srctree)/scripts/Makefile.xpl all
diff --git a/tools/spl_size_limit.c b/tools/spl_size_limit.c
index c6c139e834f..137f0fca898 100644
--- a/tools/spl_size_limit.c
+++ b/tools/spl_size_limit.c
@@ -28,6 +28,6 @@ int main(int argc, char *argv[])
 #endif
 #endif
 
-	printf("%d", spl_size_limit);
+	printf("%d", spl_size_limit > 0 ? spl_size_limit : 0);
 	return 0;
 }
-- 
2.39.5

[PATCH v6 2/4] Makefile: Add size check for u-boot-with-spl.bin

[Philip Oberfichtner]

Introduce another SIZE_CHECK macro for u-boot-with-spl.bin.

Note that we cannot reuse BOARD_SIZE_LIMIT here, as this also applies to
intermediate u-boot*bin images, which, before being compressed, may be
larger than the final combined image.

Also SPL_SIZE_LIMIT has to be a separate option, as some boards might
just want to restrict SPL size while still allowing u-boot-with-spl.bin
to be bigger.

Signed-off-by: Philip Oberfichtner <pro@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
---

Notes:
    Changes in v6: none
    
    Changes in v5:
    	- Fix for broken boards reported in v4
    	- See https://patchwork.ozlabs.org/project/uboot/patch/20250708103959.26129-2-pro@denx.de/
    
    Changes in v4: none
    
    Changes in v3:
    	Reuse existing SPL_SIZE_LIMIT instead of implementing a new option
    
    Changes in v2: none

 Makefile           | 1 +
 common/spl/Kconfig | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/Makefile b/Makefile
index 69c37082610..70d963a5724 100644
--- a/Makefile
+++ b/Makefile
@@ -1715,6 +1715,7 @@ OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 				   --pad-to=$(CONFIG_SPL_PAD_TO)
 u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE
 	$(call if_changed,pad_cat)
+	@$(call size_check,$@,$(CONFIG_UBOOT_WITH_SPL_SIZE_LIMIT))
 
 ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index ab05536bd02..b5c0c60ff6b 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -36,6 +36,13 @@ config SPL_FRAMEWORK_BOARD_INIT_F
 	  - initialize the serial (preloader_console_init)
 	  Unless you want to provide your own board_init_f, you should say Y.
 
+config UBOOT_WITH_SPL_SIZE_LIMIT
+	hex "Maximum size of u-boot-with-spl.bin"
+	default 0x0
+	help
+	  Specifies the maximum length of the u-boot-with-spl.bin image.
+	  If this value is zero, it is ignored.
+
 config SPL_SIZE_LIMIT
 	hex "Maximum size of SPL image"
 	default 0x11000 if ARCH_MX6 && !MX6_OCRAM_256KB
-- 
2.39.5

Re: [PATCH v6 2/4] Makefile: Add size check for u-boot-with-spl.bin

[Marek Vasut]

On 8/7/25 9:56 AM, Philip Oberfichtner wrote:

[...]

> +++ b/Makefile
> @@ -1715,6 +1715,7 @@ OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
>   				   --pad-to=$(CONFIG_SPL_PAD_TO)
>   u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE
>   	$(call if_changed,pad_cat)
> +	@$(call size_check,$@,$(CONFIG_UBOOT_WITH_SPL_SIZE_LIMIT))

It seems other size checks are not called unconditionally, see Makefile 
around line 1100 . Why is this one called unconditionally ? Won't this 
break boards which default this new option to 0 ?

>   ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
>   MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
> diff --git a/common/spl/Kconfig b/common/spl/Kconfig
> index ab05536bd02..b5c0c60ff6b 100644
> --- a/common/spl/Kconfig
> +++ b/common/spl/Kconfig
> @@ -36,6 +36,13 @@ config SPL_FRAMEWORK_BOARD_INIT_F
>   	  - initialize the serial (preloader_console_init)
>   	  Unless you want to provide your own board_init_f, you should say Y.
>   
> +config UBOOT_WITH_SPL_SIZE_LIMIT
> +	hex "Maximum size of u-boot-with-spl.bin"
> +	default 0x0
> +	help
> +	  Specifies the maximum length of the u-boot-with-spl.bin image.
> +	  If this value is zero, it is ignored.
Why not set SPL_SIZE_LIMIT and BOARD_SIZE_LIMIT ?

Re: [PATCH v6 2/4] Makefile: Add size check for u-boot-with-spl.bin

[Philip Oberfichtner]

On Fri, Aug 08, 2025 at 03:10:58PM +0200, Marek Vasut wrote:
> On 8/7/25 9:56 AM, Philip Oberfichtner wrote:
> 
> [...]
> 
> > +++ b/Makefile
> > @@ -1715,6 +1715,7 @@ OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
> >   				   --pad-to=$(CONFIG_SPL_PAD_TO)
> >   u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE
> >   	$(call if_changed,pad_cat)
> > +	@$(call size_check,$@,$(CONFIG_UBOOT_WITH_SPL_SIZE_LIMIT))
> 
> It seems other size checks are not called unconditionally, see Makefile
> around line 1100 . Why is this one called unconditionally ? Won't this break
> boards which default this new option to 0 ?

No. Please see the
	"test $$limit -gt 0"
in [PATCH 1/4].


> 
> >   ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
> >   MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
> > diff --git a/common/spl/Kconfig b/common/spl/Kconfig
> > index ab05536bd02..b5c0c60ff6b 100644
> > --- a/common/spl/Kconfig
> > +++ b/common/spl/Kconfig
> > @@ -36,6 +36,13 @@ config SPL_FRAMEWORK_BOARD_INIT_F
> >   	  - initialize the serial (preloader_console_init)
> >   	  Unless you want to provide your own board_init_f, you should say Y.
> > +config UBOOT_WITH_SPL_SIZE_LIMIT
> > +	hex "Maximum size of u-boot-with-spl.bin"
> > +	default 0x0
> > +	help
> > +	  Specifies the maximum length of the u-boot-with-spl.bin image.
> > +	  If this value is zero, it is ignored.
> Why not set SPL_SIZE_LIMIT and BOARD_SIZE_LIMIT ?

Please refer to the commit message above, where I explained my
rationale.


-- 
=====================================================================
DENX Software Engineering GmbH,
Managing Director: Johanna Denk, Tabea Lutz
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
=====================================================================

[PATCH v6 3/4] mips: serial: Silence "unused variable" warning

[Philip Oberfichtner]

Before this commit, mtmips_spl_serial_init() caused the following
warning:

  arch/mips/mach-mtmips/mt7628/serial.c:14:23: warning: unused variable ‘base’ [-Wunused-variable]
     14 |         void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
        |                       ^~~~

This happens whenever CONFIG_SPECIFY_CONSOLE_INDEX is unset, which leads
to an effectively empty function:

  void mtmips_spl_serial_init(void)
  {
	  void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
  }

Add the __maybe_unused attribute to silence this warning.

Signed-off-by: Philip Oberfichtner <pro@denx.de>
---

Notes:
    Changes in v6: none
    
    Changes in v5: none
    
    Changes in v4: new

 arch/mips/mach-mtmips/mt7620/serial.c     | 2 +-
 arch/mips/mach-mtmips/mt7621/spl/serial.c | 2 +-
 arch/mips/mach-mtmips/mt7628/serial.c     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/mips/mach-mtmips/mt7620/serial.c b/arch/mips/mach-mtmips/mt7620/serial.c
index 35544b8537e..a6915865e27 100644
--- a/arch/mips/mach-mtmips/mt7620/serial.c
+++ b/arch/mips/mach-mtmips/mt7620/serial.c
@@ -24,7 +24,7 @@ void board_debug_uart_init(void)
 void mtmips_spl_serial_init(void)
 {
 #ifdef CONFIG_SPL_SERIAL
-	void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+	void __iomem __maybe_unused *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
 
 #if CONFIG_CONS_INDEX == 1
 	clrbits_32(base + SYSCTL_GPIOMODE_REG, UARTL_GPIO_MODE);
diff --git a/arch/mips/mach-mtmips/mt7621/spl/serial.c b/arch/mips/mach-mtmips/mt7621/spl/serial.c
index 5cf093a078a..3f600d778e7 100644
--- a/arch/mips/mach-mtmips/mt7621/spl/serial.c
+++ b/arch/mips/mach-mtmips/mt7621/spl/serial.c
@@ -11,7 +11,7 @@
 void mtmips_spl_serial_init(void)
 {
 #ifdef CONFIG_SPL_SERIAL
-	void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+	void __iomem __maybe_unused *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
 
 #if CONFIG_CONS_INDEX == 1
 	clrbits_32(base + SYSCTL_GPIOMODE_REG, UART1_MODE);
diff --git a/arch/mips/mach-mtmips/mt7628/serial.c b/arch/mips/mach-mtmips/mt7628/serial.c
index 11a2149e127..88d63f3825b 100644
--- a/arch/mips/mach-mtmips/mt7628/serial.c
+++ b/arch/mips/mach-mtmips/mt7628/serial.c
@@ -11,7 +11,7 @@
 void mtmips_spl_serial_init(void)
 {
 #ifdef CONFIG_SPL_SERIAL
-	void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+	void __iomem __maybe_unused *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
 
 #if CONFIG_CONS_INDEX == 1
 	clrbits_32(base + SYSCTL_GPIO_MODE1_REG, UART0_MODE_M);
-- 
2.39.5

Re: [PATCH v6 3/4] mips: serial: Silence "unused variable" warning

[Daniel Schwierzeck]

On 8/7/25 09:56, Philip Oberfichtner wrote:
> Before this commit, mtmips_spl_serial_init() caused the following
> warning:
> 
>    arch/mips/mach-mtmips/mt7628/serial.c:14:23: warning: unused variable ‘base’ [-Wunused-variable]
>       14 |         void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
>          |                       ^~~~
> 
> This happens whenever CONFIG_SPECIFY_CONSOLE_INDEX is unset, which leads
> to an effectively empty function:
> 
>    void mtmips_spl_serial_init(void)
>    {
> 	  void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
>    }
> 
> Add the __maybe_unused attribute to silence this warning.
> 
> Signed-off-by: Philip Oberfichtner <pro@denx.de>
> ---
> 
> Notes:
>      Changes in v6: none
>      
>      Changes in v5: none
>      
>      Changes in v4: new
> 
>   arch/mips/mach-mtmips/mt7620/serial.c     | 2 +-
>   arch/mips/mach-mtmips/mt7621/spl/serial.c | 2 +-
>   arch/mips/mach-mtmips/mt7628/serial.c     | 2 +-
>   3 files changed, 3 insertions(+), 3 deletions(-)
> 

Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

-- 
- Daniel

[PATCH v6 4/4] mips: mt7628: Add Onion Omega2/2+ board support

[Philip Oberfichtner]

The Omega2 / Omega2+ are based on the MediaTek MT7688 SoC with the
following features:
    - 64 / 128MB of DDR2 memory
    - 16 / 32MB of SPI NOR flash
    - USB, WiFi and many more peripherals

Signed-off-by: Philip Oberfichtner <pro@denx.de>
---

Notes:
    Changes in v6:
    	As Daniel pointed out in his review, vendor specific
    	configurations should be kept in the downstream sources. All of
    	this non-generic code has been removed in v6. Most notably, that
    	is:
    		- custom environment and bootcommand
    		- network settings
    		- mtd partitioning
    
    	Apart from that, there are a few more simplifications, like the
    	removal of gpio_init() and superfluous spi drivers.
    
    Changes in v5: none
    
    Changes in v4:
    	- Adapt bootcmd
    	- Rebase defconfig
    
    Changes in v3:
    	- Adapt defconfig to [PATCH 1/2] (SPL_SIZE_LIMIT)
    
    Changes in v2:
    	- Fix style issues as reported by checkpatch
    	- Add MAINTAINERS file

 arch/mips/dts/Makefile               |  1 +
 arch/mips/dts/onion-omega2p.dts      | 58 ++++++++++++++++++++++
 arch/mips/mach-mtmips/mt7628/Kconfig |  7 +++
 board/onion/omega2p/Kconfig          | 12 +++++
 board/onion/omega2p/MAINTAINERS      |  6 +++
 configs/onion-omega2p_defconfig      | 73 ++++++++++++++++++++++++++++
 include/configs/onion-omega2p.h      | 15 ++++++
 7 files changed, 172 insertions(+)
 create mode 100644 arch/mips/dts/onion-omega2p.dts
 create mode 100644 board/onion/omega2p/Kconfig
 create mode 100644 board/onion/omega2p/MAINTAINERS
 create mode 100644 configs/onion-omega2p_defconfig
 create mode 100644 include/configs/onion-omega2p.h

diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
index 7c4ee8b668b..cb33f96edee 100644
--- a/arch/mips/dts/Makefile
+++ b/arch/mips/dts/Makefile
@@ -21,6 +21,7 @@ dtb-$(CONFIG_BOARD_MT7621_NAND_RFB) += mediatek,mt7621-nand-rfb.dtb
 dtb-$(CONFIG_BOARD_MT7628_RFB) += mediatek,mt7628-rfb.dtb
 dtb-$(CONFIG_BOARD_GARDENA_SMART_GATEWAY_MT7688) += gardena-smart-gateway-mt7688.dtb
 dtb-$(CONFIG_BOARD_LINKIT_SMART_7688) += linkit-smart-7688.dtb
+dtb-$(CONFIG_BOARD_ONION_OMEGA2) += onion-omega2p.dtb
 dtb-$(CONFIG_TARGET_OCTEON_EBB7304) += mrvl,octeon-ebb7304.dtb
 dtb-$(CONFIG_TARGET_OCTEON_NIC23) += mrvl,octeon-nic23.dtb
 dtb-$(CONFIG_BOARD_NETGEAR_CG3100D) += netgear,cg3100d.dtb
diff --git a/arch/mips/dts/onion-omega2p.dts b/arch/mips/dts/onion-omega2p.dts
new file mode 100644
index 00000000000..64fecba1db9
--- /dev/null
+++ b/arch/mips/dts/onion-omega2p.dts
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2024 Zheng Han <zh@onioniot.com>, Lazar Demin <lazar@onioniot.com>
+ */
+
+/dts-v1/;
+
+#include "mt7628a.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "onion,omega2", "onion,omega2p", "ralink,mt7628a-soc";
+	model = "Onion Omega2/Omega2+";
+
+	aliases {
+		serial0 = &uart0;
+		spi0 = &spi0;
+	};
+
+	chosen {
+		stdout-path = &uart0;
+	};
+};
+
+&pinctrl {
+	state_default: pin_state {
+		p0led {
+			groups = "p0led_a";
+			function = "led";
+		};
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+	num-cs = <2>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi_dual_pins>;
+
+	spi-flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <40000000>;
+		reg = <0>;
+	};
+};
+
+&eth {
+	pinctrl-names = "default";
+	pinctrl-0 = <&ephy_iot_mode>;
+	mediatek,poll-link-phy = <0>;
+};
diff --git a/arch/mips/mach-mtmips/mt7628/Kconfig b/arch/mips/mach-mtmips/mt7628/Kconfig
index 79b2ddc6692..a75196eaefd 100644
--- a/arch/mips/mach-mtmips/mt7628/Kconfig
+++ b/arch/mips/mach-mtmips/mt7628/Kconfig
@@ -27,6 +27,12 @@ config BOARD_MT7628_RFB
 	  SPI-NOR flash, 1 built-in switch with 5 ports, 1 UART, 1 USB host,
 	  1 SDXC, 1 PCIe socket and JTAG pins.
 
+config BOARD_ONION_OMEGA2
+	bool "Onion Omega2/2+"
+	help
+	  Onion Omega2/2+ IoT computer. Has a MT7688 SoC with 64/128 MiB of DDR2
+	  RAM and 16/32 MiB of SPI flash.
+
 config BOARD_VOCORE2
 	bool "VoCore2"
 	select SPL_SERIAL
@@ -52,6 +58,7 @@ config SYS_CONFIG_NAME
 	default "mt7628" if BOARD_MT7628_RFB
 
 source "board/gardena/smart-gateway-mt7688/Kconfig"
+source "board/onion/omega2p/Kconfig"
 source "board/seeed/linkit-smart-7688/Kconfig"
 source "board/vocore/vocore2/Kconfig"
 
diff --git a/board/onion/omega2p/Kconfig b/board/onion/omega2p/Kconfig
new file mode 100644
index 00000000000..45c18ee27ef
--- /dev/null
+++ b/board/onion/omega2p/Kconfig
@@ -0,0 +1,12 @@
+if BOARD_ONION_OMEGA2
+
+config SYS_BOARD
+	default "omega2p"
+
+config SYS_VENDOR
+	default "onion"
+
+config SYS_CONFIG_NAME
+	default "onion-omega2p"
+
+endif
diff --git a/board/onion/omega2p/MAINTAINERS b/board/onion/omega2p/MAINTAINERS
new file mode 100644
index 00000000000..aaa0214a681
--- /dev/null
+++ b/board/onion/omega2p/MAINTAINERS
@@ -0,0 +1,6 @@
+ONION OMEGA2/2+
+M:	Philip Oberfichtner <pro@denx.de>
+S:	Maintained
+F:	arch/mips/dts/onion-omega2p.dts
+F:	configs/onion-omega2p_defconfig
+F:	include/configs/onion-omega2p.h
diff --git a/configs/onion-omega2p_defconfig b/configs/onion-omega2p_defconfig
new file mode 100644
index 00000000000..d72ce42c375
--- /dev/null
+++ b/configs/onion-omega2p_defconfig
@@ -0,0 +1,73 @@
+CONFIG_MIPS=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_SYS_MALLOC_LEN=0x1000000
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x4000
+CONFIG_ENV_OFFSET=0x30000
+CONFIG_ENV_SECT_SIZE=0x10000
+CONFIG_DEFAULT_DEVICE_TREE="onion-omega2p"
+CONFIG_SPL_SERIAL=y
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x80000
+CONFIG_SPL_BSS_START_ADDR=0x80010000
+CONFIG_SPL_BSS_MAX_SIZE=0x10000
+CONFIG_SYS_LOAD_ADDR=0x81800000
+CONFIG_SPL=y
+CONFIG_ARCH_MTMIPS=y
+CONFIG_SOC_MT7628=y
+CONFIG_BOARD_ONION_OMEGA2=y
+CONFIG_SYS_MIPS_TIMER_FREQ=290000000
+CONFIG_MIPS_CACHE_SETUP=y
+CONFIG_MIPS_CACHE_DISABLE=y
+CONFIG_RESTORE_EXCEPTION_VECTOR_BASE=y
+# CONFIG_MIPS_BOOT_ENV_LEGACY is not set
+CONFIG_MIPS_BOOT_FDT=y
+CONFIG_ENV_VARS_UBOOT_CONFIG=y
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
+# CONFIG_AUTOBOOT is not set
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttyS0,115200"
+CONFIG_SYS_MALLOC_BOOTPARAMS=y
+CONFIG_UBOOT_WITH_SPL_SIZE_LIMIT=0x30000
+CONFIG_SPL_MAX_SIZE=0x10000
+CONFIG_SPL_SYS_MALLOC_SIMPLE=y
+CONFIG_SPL_NOR_SUPPORT=y
+CONFIG_HUSH_PARSER=y
+# CONFIG_CMD_ELF is not set
+CONFIG_CMD_ERASEENV=y
+CONFIG_CMD_NVEDIT_INFO=y
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_MTDIDS_DEFAULT="nor0=spi0.0"
+CONFIG_MTDPARTS_DEFAULT="spi0.0:192k(u-boot),64k(u-boot-env)"
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_SPL_DM=y
+CONFIG_LED=y
+CONFIG_LED_BLINK=y
+CONFIG_LED_GPIO=y
+CONFIG_DM_MTD=y
+CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_MTD=y
+CONFIG_MT7628_ETH=y
+CONFIG_PHY=y
+CONFIG_SPI=y
+CONFIG_MT7621_SPI=y
+CONFIG_LZMA=y
+# CONFIG_GZIP is not set
+CONFIG_SPL_LZMA=y
diff --git a/include/configs/onion-omega2p.h b/include/configs/onion-omega2p.h
new file mode 100644
index 00000000000..ca170b22a40
--- /dev/null
+++ b/include/configs/onion-omega2p.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2024 Zheng Han <zh@onioniot.com>, Lazar Demin <lazar@onioniot.com>
+ */
+#ifndef __CONFIG_ONION_OMEGA2P_H
+#define __CONFIG_ONION_OMEGA2P_H
+
+/* RAM */
+#define CFG_SYS_SDRAM_BASE      0x80000000
+#define CFG_SYS_INIT_SP_OFFSET  0x400000
+
+/* Dummy value */
+#define CFG_SYS_UBOOT_BASE      0
+
+#endif /* __CONFIG_ONION_OMEGA2P_H */
-- 
2.39.5

Re: [PATCH v6 4/4] mips: mt7628: Add Onion Omega2/2+ board support

[Daniel Schwierzeck]

On 8/7/25 09:56, Philip Oberfichtner wrote:
> The Omega2 / Omega2+ are based on the MediaTek MT7688 SoC with the
> following features:
>      - 64 / 128MB of DDR2 memory
>      - 16 / 32MB of SPI NOR flash
>      - USB, WiFi and many more peripherals
> 
> Signed-off-by: Philip Oberfichtner <pro@denx.de>
> ---
> 
> Notes:
>      Changes in v6:
>      	As Daniel pointed out in his review, vendor specific
>      	configurations should be kept in the downstream sources. All of
>      	this non-generic code has been removed in v6. Most notably, that
>      	is:
>      		- custom environment and bootcommand
>      		- network settings
>      		- mtd partitioning
>      
>      	Apart from that, there are a few more simplifications, like the
>      	removal of gpio_init() and superfluous spi drivers.
>      
>      Changes in v5: none
>      
>      Changes in v4:
>      	- Adapt bootcmd
>      	- Rebase defconfig
>      
>      Changes in v3:
>      	- Adapt defconfig to [PATCH 1/2] (SPL_SIZE_LIMIT)
>      
>      Changes in v2:
>      	- Fix style issues as reported by checkpatch
>      	- Add MAINTAINERS file
> 
>   arch/mips/dts/Makefile               |  1 +
>   arch/mips/dts/onion-omega2p.dts      | 58 ++++++++++++++++++++++
>   arch/mips/mach-mtmips/mt7628/Kconfig |  7 +++
>   board/onion/omega2p/Kconfig          | 12 +++++
>   board/onion/omega2p/MAINTAINERS      |  6 +++
>   configs/onion-omega2p_defconfig      | 73 ++++++++++++++++++++++++++++
>   include/configs/onion-omega2p.h      | 15 ++++++
>   7 files changed, 172 insertions(+)
>   create mode 100644 arch/mips/dts/onion-omega2p.dts
>   create mode 100644 board/onion/omega2p/Kconfig
>   create mode 100644 board/onion/omega2p/MAINTAINERS
>   create mode 100644 configs/onion-omega2p_defconfig
>   create mode 100644 include/configs/onion-omega2p.h
> 

Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

-- 
- Daniel

Re: [PATCH v6 0/4] Add Onion Omega2/2+ board support

[Philip Oberfichtner]

On Thu, Aug 07, 2025 at 09:56:49AM +0200, Philip Oberfichtner wrote:
> Add support for the MediaTek based boards by Onion. Commit one to three are
> rather generic, whereas the last commit adds the actual board support.

Please don't pull any of this board support series before my "Simplify
image size checks" series [1].

I inadvertently made the two series cross-dependent. I'll make the
separation more clear in the next versions.

Best regards,
Philip

[1] https://patchwork.ozlabs.org/project/uboot/list/?series=468251&archive=both&state=*