diff mbox

[U-Boot,v5,5/5] mips: ath79: add AP121 reference board

Message ID BLU436-SMTP175AB043A5B61F632BBB949FFFC0@phx.gbl
State Superseded
Delegated to: Daniel Schwierzeck
Headers show

Commit Message

Wills Wang Dec. 29, 2015, 11:17 a.m. UTC 
Signed-off-by: Wills Wang <wills.wang@live.com>
---

Changes in v5:
- Move CONFIG_SYS_TEXT_BASE into ap121.h, and remove config.mk
- Remove useless README file
- Remove useless checkboard function

Changes in v4: None
Changes in v3:
- Add support for device tree

Changes in v2:
- Add a reference board implemention

 arch/mips/dts/Makefile        |  2 +-
 arch/mips/dts/ap121.dts       | 37 +++++++++++++++++++
 arch/mips/dts/ar933x.dtsi     | 64 ++++++++++++++++++++++++++++++++
 board/ath79/ap121/Kconfig     |  9 +++++
 board/ath79/ap121/MAINTAINERS |  6 +++
 board/ath79/ap121/Makefile    |  8 ++++
 board/ath79/ap121/ap121.c     |  6 +++
 configs/ap121_defconfig       | 40 ++++++++++++++++++++
 include/configs/ap121.h       | 86 +++++++++++++++++++++++++++++++++++++++++++
 9 files changed, 257 insertions(+), 1 deletion(-)
 create mode 100644 arch/mips/dts/ap121.dts
 create mode 100644 arch/mips/dts/ar933x.dtsi
 create mode 100644 board/ath79/ap121/Kconfig
 create mode 100644 board/ath79/ap121/MAINTAINERS
 create mode 100644 board/ath79/ap121/Makefile
 create mode 100644 board/ath79/ap121/ap121.c
 create mode 100644 configs/ap121_defconfig
 create mode 100644 include/configs/ap121.h

Comments

Daniel Schwierzeck Dec. 29, 2015, 7:27 p.m. UTC | #1 
Am 29.12.2015 um 12:17 schrieb Wills Wang:
> Signed-off-by: Wills Wang <wills.wang@live.com>
> ---
> 
> Changes in v5:
> - Move CONFIG_SYS_TEXT_BASE into ap121.h, and remove config.mk
> - Remove useless README file
> - Remove useless checkboard function
> 
> Changes in v4: None
> Changes in v3:
> - Add support for device tree
> 
> Changes in v2:
> - Add a reference board implemention
> 
>  arch/mips/dts/Makefile        |  2 +-
>  arch/mips/dts/ap121.dts       | 37 +++++++++++++++++++
>  arch/mips/dts/ar933x.dtsi     | 64 ++++++++++++++++++++++++++++++++
>  board/ath79/ap121/Kconfig     |  9 +++++
>  board/ath79/ap121/MAINTAINERS |  6 +++
>  board/ath79/ap121/Makefile    |  8 ++++
>  board/ath79/ap121/ap121.c     |  6 +++
>  configs/ap121_defconfig       | 40 ++++++++++++++++++++
>  include/configs/ap121.h       | 86 +++++++++++++++++++++++++++++++++++++++++++
>  9 files changed, 257 insertions(+), 1 deletion(-)
>  create mode 100644 arch/mips/dts/ap121.dts
>  create mode 100644 arch/mips/dts/ar933x.dtsi
>  create mode 100644 board/ath79/ap121/Kconfig
>  create mode 100644 board/ath79/ap121/MAINTAINERS
>  create mode 100644 board/ath79/ap121/Makefile
>  create mode 100644 board/ath79/ap121/ap121.c
>  create mode 100644 configs/ap121_defconfig
>  create mode 100644 include/configs/ap121.h
> 
> diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
> index 47b6eb5..3fd49eb 100644
> --- a/arch/mips/dts/Makefile
> +++ b/arch/mips/dts/Makefile
> @@ -2,7 +2,7 @@
>  # SPDX-License-Identifier:	GPL-2.0+
>  #
>  
> -dtb-y +=
> +dtb-$(CONFIG_BOARD_AP121) += ap121.dtb
>  
>  targets += $(dtb-y)
>  
> diff --git a/arch/mips/dts/ap121.dts b/arch/mips/dts/ap121.dts
> new file mode 100644
> index 0000000..f7c3a1a
> --- /dev/null
> +++ b/arch/mips/dts/ap121.dts
> @@ -0,0 +1,37 @@
> +/dts-v1/;
> +#include "ar933x.dtsi"
> +
> +/ {
> +	model = "AP121 Reference Board";
> +	compatible = "qca,ap121", "qca,ar933x";
> +
> +	aliases {
> +		spi0 = &spi0;
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +};
> +
> +&xtal {
> +	clock-frequency = <25000000>;
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};
> +
> +&spi0 {
> +	spi-max-frequency = <25000000>;
> +	status = "okay";
> +	spi-flash@0 {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "spi-flash";
> +		memory-map = <0x9f000000 0x00800000>;
> +		spi-max-frequency = <25000000>;
> +		reg = <0>;
> +	};
> +};
> diff --git a/arch/mips/dts/ar933x.dtsi b/arch/mips/dts/ar933x.dtsi
> new file mode 100644
> index 0000000..05cc165
> --- /dev/null
> +++ b/arch/mips/dts/ar933x.dtsi
> @@ -0,0 +1,64 @@
> +#include "skeleton.dtsi"
> +
> +/ {
> +	compatible = "qca,ar933x";
> +
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		cpu@0 {
> +			device_type = "cpu";
> +			compatible = "mips,mips24Kc";
> +			reg = <0>;
> +		};
> +	};
> +
> +	clocks {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		xtal: xtal {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +			clock-output-names = "xtal";
> +		};
> +	};
> +
> +	ahb {
> +		compatible = "simple-bus";
> +		ranges;
> +
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +
> +		apb {
> +			compatible = "simple-bus";
> +			ranges;
> +
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			uart0: uart@18020000 {
> +				compatible = "qca,ar9330-uart";
> +				reg = <0x18020000 0x20>;
> +
> +				status = "disabled";
> +			};
> +		};
> +
> +		spi0: spi@1f000000 {
> +			compatible = "qca,ar7100-spi";
> +			reg = <0x1f000000 0x10>;
> +
> +			status = "disabled";
> +
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +	};
> +};
> diff --git a/board/ath79/ap121/Kconfig b/board/ath79/ap121/Kconfig
> new file mode 100644
> index 0000000..ec72914
> --- /dev/null
> +++ b/board/ath79/ap121/Kconfig
> @@ -0,0 +1,9 @@
> +if BOARD_AP121
> +
> +config SYS_BOARD
> +	default "ap121"
> +
> +config SYS_CONFIG_NAME
> +	default "ap121"
> +
> +endif
> diff --git a/board/ath79/ap121/MAINTAINERS b/board/ath79/ap121/MAINTAINERS
> new file mode 100644
> index 0000000..319b521
> --- /dev/null
> +++ b/board/ath79/ap121/MAINTAINERS
> @@ -0,0 +1,6 @@
> +AP121 BOARD
> +M:	Wills Wang <wills.wang@live.com>
> +S:	Maintained
> +F:	board/ath79/ap121/
> +F:	include/configs/ap121.h
> +F:	configs/ap121_defconfig
> diff --git a/board/ath79/ap121/Makefile b/board/ath79/ap121/Makefile
> new file mode 100644
> index 0000000..9132118
> --- /dev/null
> +++ b/board/ath79/ap121/Makefile
> @@ -0,0 +1,8 @@
> +#
> +# (C) Copyright 2003-2006
> +# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
> +#
> +# SPDX-License-Identifier:	GPL-2.0+
> +#
> +
> +obj-y	= ap121.o
> diff --git a/board/ath79/ap121/ap121.c b/board/ath79/ap121/ap121.c
> new file mode 100644
> index 0000000..4f09768
> --- /dev/null
> +++ b/board/ath79/ap121/ap121.c
> @@ -0,0 +1,6 @@
> +/*
> + * (C) Copyright 2015
> + * Wills Wang, <wills.wang@live.com>
> + *
> + * SPDX-License-Identifier:	GPL-2.0+
> + */
> diff --git a/configs/ap121_defconfig b/configs/ap121_defconfig
> new file mode 100644
> index 0000000..04ef85e
> --- /dev/null
> +++ b/configs/ap121_defconfig
> @@ -0,0 +1,40 @@
> +CONFIG_MIPS=y
> +CONFIG_ARCH_ATH79=y
> +CONFIG_BOARD_AP121=y
> +CONFIG_SYS_MALLOC_F_LEN=0x2000
> +CONFIG_DM_SERIAL=y
> +CONFIG_DM_SPI=y
> +CONFIG_DM_SPI_FLASH=y
> +CONFIG_DEFAULT_DEVICE_TREE="ap121"
> +CONFIG_SYS_PROMPT="ap121 # "
> +# CONFIG_CMD_BDI is not set
> +# CONFIG_CMD_CONSOLE is not set
> +# CONFIG_CMD_ELF is not set
> +# CONFIG_CMD_IMLS is not set
> +# CONFIG_CMD_XIMG is not set
> +# CONFIG_CMD_EXPORTENV is not set
> +# CONFIG_CMD_IMPORTENV is not set
> +# CONFIG_CMD_EDITENV is not set
> +# CONFIG_CMD_CRC32 is not set
> +# CONFIG_CMD_FLASH is not set
> +CONFIG_CMD_SF=y
> +CONFIG_CMD_SPI=y
> +# CONFIG_CMD_FPGA is not set
> +# CONFIG_CMD_NET is not set
> +# CONFIG_CMD_NFS is not set
> +CONFIG_SPI_FLASH=y
> +CONFIG_SPI_FLASH_BAR=y
> +CONFIG_SPI_FLASH_ATMEL=y
> +CONFIG_SPI_FLASH_EON=y
> +CONFIG_SPI_FLASH_GIGADEVICE=y
> +CONFIG_SPI_FLASH_MACRONIX=y
> +CONFIG_SPI_FLASH_SPANSION=y
> +CONFIG_SPI_FLASH_STMICRO=y
> +CONFIG_SPI_FLASH_SST=y
> +CONFIG_SPI_FLASH_WINBOND=y
> +CONFIG_SPI_FLASH_DATAFLASH=y
> +CONFIG_SPI_FLASH_MTD=y
> +CONFIG_DEBUG_UART=y
> +CONFIG_DEBUG_UART_AR933X=y
> +CONFIG_DEBUG_UART_BASE=0x18020000
> +CONFIG_DEBUG_UART_CLOCK=25000000
> diff --git a/include/configs/ap121.h b/include/configs/ap121.h
> new file mode 100644
> index 0000000..21fb04e
> --- /dev/null
> +++ b/include/configs/ap121.h
> @@ -0,0 +1,86 @@
> +#ifndef __CONFIG_H
> +#define __CONFIG_H
> +
> +#include <linux/sizes.h>
> +
> +#define CONFIG_SYS_TEXT_BASE            0x9f000000
> +
> +#define CONFIG_DISPLAY_CPUINFO
> +#define CONFIG_DISPLAY_BOARDINFO
> +#define CONFIG_BOARD_EARLY_INIT_F
> +
> +#define CONFIG_SYS_HZ                   1000
> +#define CONFIG_SYS_MHZ                  200
> +#define CONFIG_SYS_MIPS_TIMER_FREQ      (CONFIG_SYS_MHZ * 1000000)
> +
> +/* Cache Configuration */
> +#define CONFIG_SYS_DCACHE_SIZE          SZ_32K
> +#define CONFIG_SYS_ICACHE_SIZE          SZ_64K
> +#define CONFIG_SYS_CACHELINE_SIZE       32

you wrote that without these values, your board will not boot. But it
should on a MIPS 24Kc core. The kernel also works with auto-detected
values. Please try again with this patch series. I would like to remove
the cache code in the future, that depends on manually configured sizes.

> +
> +#define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_TEXT_BASE
> +
> +#define CONFIG_SYS_MALLOC_LEN           SZ_256K
> +#define CONFIG_SYS_BOOTPARAMS_LEN       SZ_128K

please use hexadecimal numbers instead of SZ_* macros. All those options
are eventually converted to Kconfig symbols of type hex.

> +
> +#define CONFIG_SYS_SDRAM_BASE           0x80000000
> +#define CONFIG_SYS_LOAD_ADDR            0x81000000
> +
> +#define CONFIG_SYS_NO_FLASH
> +
> +#define CONFIG_SYS_INIT_RAM_ADDR        0xbd000000
> +#define CONFIG_SYS_INIT_RAM_SIZE        SZ_32K
> +
> +#define CONFIG_SYS_INIT_SP_OFFSET \
> +	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
> +#define CONFIG_SYS_INIT_SP_ADDR \
> +	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)

you only need

#define CONFIG_SYS_INIT_SP_ADDR \
	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE - 1)

The space for global_data is automatically reserved in start.S above the
stack pointer

> +
> +#define CONFIG_BAUDRATE                 115200
> +#define CONFIG_SYS_BAUDRATE_TABLE \
> +	{9600, 19200, 38400, 57600, 115200}
> +
> +#define CONFIG_BOOTDELAY                3
> +#define CONFIG_BOOTARGS                 "console=ttyS0,115200 " \
> +					"root=/dev/mtdblock2 " \
> +					"rootfstype=squashfs"
> +#define CONFIG_BOOTCOMMAND              "sf probe;" \
> +					"mtdparts default;" \
> +					"bootm 0x9f300000"
> +#define CONFIG_LZMA
> +#define CONFIG_OF_LIBFDT
> +
> +#define MTDIDS_DEFAULT                  "nor0=spi-flash.0"
> +#define MTDPARTS_DEFAULT                "mtdparts=spi-flash.0:" \
> +					"256k(u-boot),64k(u-boot-env)," \
> +					"2752k(rootfs),896k(uImage)," \
> +					"64k(NVRAM),64k(ART)"
> +
> +#define CONFIG_ENV_SPI_MAX_HZ           25000000
> +#define CONFIG_ENV_IS_IN_SPI_FLASH
> +#define CONFIG_ENV_OFFSET               SZ_256K
> +#define CONFIG_ENV_SECT_SIZE            SZ_64K
> +#define CONFIG_ENV_SIZE                 SZ_64K
> +
> +/*
> + * Command
> + */
> +#define CONFIG_CMD_MTDPARTS
> +
> +/* Miscellaneous configurable options */
> +#define CONFIG_SYS_CBSIZE               256
> +#define CONFIG_SYS_MAXARGS              16
> +#define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE + \
> +					sizeof(CONFIG_SYS_PROMPT) + 16)
> +#define CONFIG_SYS_LONGHELP
> +#define CONFIG_CMDLINE_EDITING
> +#define CONFIG_AUTO_COMPLETE
> +
> +/*
> + * Diagnostics
> + */
> +#define CONFIG_SYS_MEMTEST_START        0x80100000
> +#define CONFIG_SYS_MEMTEST_END          0x83f00000
> +#define CONFIG_CMD_MEMTEST
> +
> +#endif  /* __CONFIG_H */
>
Wills Wang Dec. 30, 2015, 6:31 a.m. UTC | #2 
On 12/30/2015 03:27 AM, Daniel Schwierzeck wrote:
> diff --git a/include/configs/ap121.h b/include/configs/ap121.h
> new file mode 100644
> index 0000000..21fb04e
> --- /dev/null
> +++ b/include/configs/ap121.h
> @@ -0,0 +1,86 @@
> +#ifndef __CONFIG_H
> +#define __CONFIG_H
> +
> +#include <linux/sizes.h>
> +
> +#define CONFIG_SYS_TEXT_BASE            0x9f000000
> +
> +#define CONFIG_DISPLAY_CPUINFO
> +#define CONFIG_DISPLAY_BOARDINFO
> +#define CONFIG_BOARD_EARLY_INIT_F
> +
> +#define CONFIG_SYS_HZ                   1000
> +#define CONFIG_SYS_MHZ                  200
> +#define CONFIG_SYS_MIPS_TIMER_FREQ      (CONFIG_SYS_MHZ * 1000000)
> +
> +/* Cache Configuration */
> +#define CONFIG_SYS_DCACHE_SIZE          SZ_32K
> +#define CONFIG_SYS_ICACHE_SIZE          SZ_64K
> +#define CONFIG_SYS_CACHELINE_SIZE       32
> you wrote that without these values, your board will not boot. But it
> should on a MIPS 24Kc core. The kernel also works with auto-detected
> values. Please try again with this patch series. I would like to remove
> the cache code in the future, that depends on manually configured sizes.
>
I try it again, my board still don't work if remove these three lines.
>> +
>> +#define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_TEXT_BASE
>> +
>> +#define CONFIG_SYS_MALLOC_LEN           SZ_256K
>> +#define CONFIG_SYS_BOOTPARAMS_LEN       SZ_128K
> please use hexadecimal numbers instead of SZ_* macros. All those options
> are eventually converted to Kconfig symbols of type hex.
Ok.
>> +
>> +#define CONFIG_SYS_SDRAM_BASE           0x80000000
>> +#define CONFIG_SYS_LOAD_ADDR            0x81000000
>> +
>> +#define CONFIG_SYS_NO_FLASH
>> +
>> +#define CONFIG_SYS_INIT_RAM_ADDR        0xbd000000
>> +#define CONFIG_SYS_INIT_RAM_SIZE        SZ_32K
>> +
>> +#define CONFIG_SYS_INIT_SP_OFFSET \
>> +	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
>> +#define CONFIG_SYS_INIT_SP_ADDR \
>> +	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
> you only need
>
> #define CONFIG_SYS_INIT_SP_ADDR \
> 	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE - 1)
>
> The space for global_data is automatically reserved in start.S above the
> stack pointer
Ok.
diff mbox

Patch

diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
index 47b6eb5..3fd49eb 100644
--- a/arch/mips/dts/Makefile
+++ b/arch/mips/dts/Makefile
@@ -2,7 +2,7 @@ 
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-dtb-y +=
+dtb-$(CONFIG_BOARD_AP121) += ap121.dtb
 
 targets += $(dtb-y)
 
diff --git a/arch/mips/dts/ap121.dts b/arch/mips/dts/ap121.dts
new file mode 100644
index 0000000..f7c3a1a
--- /dev/null
+++ b/arch/mips/dts/ap121.dts
@@ -0,0 +1,37 @@ 
+/dts-v1/;
+#include "ar933x.dtsi"
+
+/ {
+	model = "AP121 Reference Board";
+	compatible = "qca,ap121", "qca,ar933x";
+
+	aliases {
+		spi0 = &spi0;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&xtal {
+	clock-frequency = <25000000>;
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&spi0 {
+	spi-max-frequency = <25000000>;
+	status = "okay";
+	spi-flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash";
+		memory-map = <0x9f000000 0x00800000>;
+		spi-max-frequency = <25000000>;
+		reg = <0>;
+	};
+};
diff --git a/arch/mips/dts/ar933x.dtsi b/arch/mips/dts/ar933x.dtsi
new file mode 100644
index 0000000..05cc165
--- /dev/null
+++ b/arch/mips/dts/ar933x.dtsi
@@ -0,0 +1,64 @@ 
+#include "skeleton.dtsi"
+
+/ {
+	compatible = "qca,ar933x";
+
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "mips,mips24Kc";
+			reg = <0>;
+		};
+	};
+
+	clocks {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		xtal: xtal {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-output-names = "xtal";
+		};
+	};
+
+	ahb {
+		compatible = "simple-bus";
+		ranges;
+
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		apb {
+			compatible = "simple-bus";
+			ranges;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			uart0: uart@18020000 {
+				compatible = "qca,ar9330-uart";
+				reg = <0x18020000 0x20>;
+
+				status = "disabled";
+			};
+		};
+
+		spi0: spi@1f000000 {
+			compatible = "qca,ar7100-spi";
+			reg = <0x1f000000 0x10>;
+
+			status = "disabled";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+	};
+};
diff --git a/board/ath79/ap121/Kconfig b/board/ath79/ap121/Kconfig
new file mode 100644
index 0000000..ec72914
--- /dev/null
+++ b/board/ath79/ap121/Kconfig
@@ -0,0 +1,9 @@ 
+if BOARD_AP121
+
+config SYS_BOARD
+	default "ap121"
+
+config SYS_CONFIG_NAME
+	default "ap121"
+
+endif
diff --git a/board/ath79/ap121/MAINTAINERS b/board/ath79/ap121/MAINTAINERS
new file mode 100644
index 0000000..319b521
--- /dev/null
+++ b/board/ath79/ap121/MAINTAINERS
@@ -0,0 +1,6 @@ 
+AP121 BOARD
+M:	Wills Wang <wills.wang@live.com>
+S:	Maintained
+F:	board/ath79/ap121/
+F:	include/configs/ap121.h
+F:	configs/ap121_defconfig
diff --git a/board/ath79/ap121/Makefile b/board/ath79/ap121/Makefile
new file mode 100644
index 0000000..9132118
--- /dev/null
+++ b/board/ath79/ap121/Makefile
@@ -0,0 +1,8 @@ 
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	= ap121.o
diff --git a/board/ath79/ap121/ap121.c b/board/ath79/ap121/ap121.c
new file mode 100644
index 0000000..4f09768
--- /dev/null
+++ b/board/ath79/ap121/ap121.c
@@ -0,0 +1,6 @@ 
+/*
+ * (C) Copyright 2015
+ * Wills Wang, <wills.wang@live.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
diff --git a/configs/ap121_defconfig b/configs/ap121_defconfig
new file mode 100644
index 0000000..04ef85e
--- /dev/null
+++ b/configs/ap121_defconfig
@@ -0,0 +1,40 @@ 
+CONFIG_MIPS=y
+CONFIG_ARCH_ATH79=y
+CONFIG_BOARD_AP121=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_DM_SERIAL=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_DEFAULT_DEVICE_TREE="ap121"
+CONFIG_SYS_PROMPT="ap121 # "
+# CONFIG_CMD_BDI is not set
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_XIMG is not set
+# CONFIG_CMD_EXPORTENV is not set
+# CONFIG_CMD_IMPORTENV is not set
+# CONFIG_CMD_EDITENV is not set
+# CONFIG_CMD_CRC32 is not set
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+# CONFIG_CMD_FPGA is not set
+# CONFIG_CMD_NET is not set
+# CONFIG_CMD_NFS is not set
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_ATMEL=y
+CONFIG_SPI_FLASH_EON=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_SST=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_DATAFLASH=y
+CONFIG_SPI_FLASH_MTD=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_AR933X=y
+CONFIG_DEBUG_UART_BASE=0x18020000
+CONFIG_DEBUG_UART_CLOCK=25000000
diff --git a/include/configs/ap121.h b/include/configs/ap121.h
new file mode 100644
index 0000000..21fb04e
--- /dev/null
+++ b/include/configs/ap121.h
@@ -0,0 +1,86 @@ 
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <linux/sizes.h>
+
+#define CONFIG_SYS_TEXT_BASE            0x9f000000
+
+#define CONFIG_DISPLAY_CPUINFO
+#define CONFIG_DISPLAY_BOARDINFO
+#define CONFIG_BOARD_EARLY_INIT_F
+
+#define CONFIG_SYS_HZ                   1000
+#define CONFIG_SYS_MHZ                  200
+#define CONFIG_SYS_MIPS_TIMER_FREQ      (CONFIG_SYS_MHZ * 1000000)
+
+/* Cache Configuration */
+#define CONFIG_SYS_DCACHE_SIZE          SZ_32K
+#define CONFIG_SYS_ICACHE_SIZE          SZ_64K
+#define CONFIG_SYS_CACHELINE_SIZE       32
+
+#define CONFIG_SYS_MONITOR_BASE         CONFIG_SYS_TEXT_BASE
+
+#define CONFIG_SYS_MALLOC_LEN           SZ_256K
+#define CONFIG_SYS_BOOTPARAMS_LEN       SZ_128K
+
+#define CONFIG_SYS_SDRAM_BASE           0x80000000
+#define CONFIG_SYS_LOAD_ADDR            0x81000000
+
+#define CONFIG_SYS_NO_FLASH
+
+#define CONFIG_SYS_INIT_RAM_ADDR        0xbd000000
+#define CONFIG_SYS_INIT_RAM_SIZE        SZ_32K
+
+#define CONFIG_SYS_INIT_SP_OFFSET \
+	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR \
+	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+
+#define CONFIG_BAUDRATE                 115200
+#define CONFIG_SYS_BAUDRATE_TABLE \
+	{9600, 19200, 38400, 57600, 115200}
+
+#define CONFIG_BOOTDELAY                3
+#define CONFIG_BOOTARGS                 "console=ttyS0,115200 " \
+					"root=/dev/mtdblock2 " \
+					"rootfstype=squashfs"
+#define CONFIG_BOOTCOMMAND              "sf probe;" \
+					"mtdparts default;" \
+					"bootm 0x9f300000"
+#define CONFIG_LZMA
+#define CONFIG_OF_LIBFDT
+
+#define MTDIDS_DEFAULT                  "nor0=spi-flash.0"
+#define MTDPARTS_DEFAULT                "mtdparts=spi-flash.0:" \
+					"256k(u-boot),64k(u-boot-env)," \
+					"2752k(rootfs),896k(uImage)," \
+					"64k(NVRAM),64k(ART)"
+
+#define CONFIG_ENV_SPI_MAX_HZ           25000000
+#define CONFIG_ENV_IS_IN_SPI_FLASH
+#define CONFIG_ENV_OFFSET               SZ_256K
+#define CONFIG_ENV_SECT_SIZE            SZ_64K
+#define CONFIG_ENV_SIZE                 SZ_64K
+
+/*
+ * Command
+ */
+#define CONFIG_CMD_MTDPARTS
+
+/* Miscellaneous configurable options */
+#define CONFIG_SYS_CBSIZE               256
+#define CONFIG_SYS_MAXARGS              16
+#define CONFIG_SYS_PBSIZE               (CONFIG_SYS_CBSIZE + \
+					sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_CMDLINE_EDITING
+#define CONFIG_AUTO_COMPLETE
+
+/*
+ * Diagnostics
+ */
+#define CONFIG_SYS_MEMTEST_START        0x80100000
+#define CONFIG_SYS_MEMTEST_END          0x83f00000
+#define CONFIG_CMD_MEMTEST
+
+#endif  /* __CONFIG_H */