On 2/4/20 9:42 AM, Bin Meng wrote:
Hi Sean,
On Tue, Feb 4, 2020 at 10:26 PM Sean Anderson seanga2@gmail.com wrote:
On 2/4/20 6:38 AM, Bin Meng wrote:
Hi Sean,
On Mon, Feb 3, 2020 at 4:11 AM Sean Anderson seanga2@gmail.com wrote:
The Sipeed Maix series is a collection of boards built around the RISC-V Kendryte K210 processor. This processor contains several peripherals to accelerate neural network processing and other "ai" tasks. This includes a "KPU" neural network processor, an audio processor supporting beamforming reception, and a digital video port supporting capture and output at VGA resolution. Other peripherals include 8M of sram (accessible with and without caching); remappable pins, including 40 GPIOs; AES, FFT, and SHA256 accelerators; a DMA controller; and I2C, I2S, and SPI controllers. Maix peripherals vary, but include spi flash; on-board usb-serial bridges; ports for cameras, displays, and sd cards; and ESP32 chips. Currently, only the Sipeed Maix Bit V2.0 (bitm) is supported, but the boards are fairly similar.
Documentation for Maix boards is located at http://dl.sipeed.com/MAIX/HDK/. Documentation for the Kendryte K210 is located at https://kendryte.com/downloads/. However, hardware details are rather lacking, so most technical reference has been taken from the standalone sdk located at https://github.com/kendryte/kendryte-standalone-sdk.
Signed-off-by: Sean Anderson seanga2@gmail.com
Changes for v3:
- Reorder to be last in the patch series
- Add documentation for the board
- Generate defconfig with "make savedefconfig"
- Update Kconfig to imply most features we need
- Update MAINTAINERS
Changes for v2:
- Select CONFIG_SYS_RISCV_NOCOUNTER
- Imply CONFIG_CLK_K210
- Remove spurious references to CONFIG_ARCH_K210
- Remove many configs from defconfig where the defaults were fine
- Add a few "not set" lines to suppress unneeded defaults
- Reduce pre-reloc malloc space, now that clocks initialization happens later
arch/riscv/Kconfig | 4 +++ board/sipeed/maix/Kconfig | 51 ++++++++++++++++++++++++++++++ board/sipeed/maix/MAINTAINERS | 10 ++++++ board/sipeed/maix/Makefile | 5 +++ board/sipeed/maix/maix.c | 9 ++++++ configs/sipeed_maix_bitm_defconfig | 10 ++++++ doc/board/index.rst | 1 + doc/board/kendryte/index.rst | 9 ++++++ doc/board/kendryte/k210.rst | 46 +++++++++++++++++++++++++++ include/configs/sipeed-maix.h | 19 +++++++++++ 10 files changed, 164 insertions(+) create mode 100644 board/sipeed/maix/Kconfig create mode 100644 board/sipeed/maix/MAINTAINERS create mode 100644 board/sipeed/maix/Makefile create mode 100644 board/sipeed/maix/maix.c create mode 100644 configs/sipeed_maix_bitm_defconfig create mode 100644 doc/board/kendryte/index.rst create mode 100644 doc/board/kendryte/k210.rst create mode 100644 include/configs/sipeed-maix.h
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 87c40f6c4c..81ab35dd2d 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -20,6 +20,9 @@ config TARGET_QEMU_VIRT config TARGET_SIFIVE_FU540 bool "Support SiFive FU540 Board"
+config TARGET_SIPEED_MAIX
bool "Support Sipeed Maix Board"endchoice
config SYS_ICACHE_OFF @@ -53,6 +56,7 @@ source "board/AndesTech/ax25-ae350/Kconfig" source "board/emulation/qemu-riscv/Kconfig" source "board/microchip/mpfs_icicle/Kconfig" source "board/sifive/fu540/Kconfig" +source "board/sipeed/maix/Kconfig"
# platform-specific options below source "arch/riscv/cpu/ax25/Kconfig" diff --git a/board/sipeed/maix/Kconfig b/board/sipeed/maix/Kconfig new file mode 100644 index 0000000000..b23d2448d9 --- /dev/null +++ b/board/sipeed/maix/Kconfig @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright (C) 2019 Sean Anderson seanga2@gmail.com
+if TARGET_SIPEED_MAIX
+config SYS_BOARD
default "maix"+config SYS_VENDOR
default "sipeed"+config SYS_CPU
default "generic"+config SYS_CONFIG_NAME
default "sipeed-maix"+config SYS_TEXT_BASE
default 0x80000000+config DEFAULT_DEVICE_TREE
default "k210-maix-bit"+config NR_CPUS
default 2+config NR_DRAM_BANKS
default 2+config BOARD_SPECIFIC_OPTIONS
def_bool yselect GENERIC_RISCVselect RISCV_PRIV_1_9_1imply DM_SERIALimply SIFIVE_SERIALimply SIFIVE_CLINTimply CLK_CCFimply CLK_COMPOSITE_CCFimply CLK_K210imply DM_RESETimply RESET_SYSCONimply SYSRESETimply SYSRESET_SYSCONimply SPIimply DESIGNWARE_SPIimply SPI_FLASH_GIGADEVICEimply MMCimply MMC_SPIimply MMC_BROKEN_CDimply CMD_MMC+endif diff --git a/board/sipeed/maix/MAINTAINERS b/board/sipeed/maix/MAINTAINERS new file mode 100644 index 0000000000..43cf61fb64 --- /dev/null +++ b/board/sipeed/maix/MAINTAINERS @@ -0,0 +1,10 @@ +Sipeed Maix BOARD +M: Sean Anderson seanga2@gmail.com +S: Maintained +F: arch/riscv/dts/k210.dtsi +F: arch/riscv/dts/k210-maix-bit.dts +F: board/sipeed/maix/ +F: configs/sipeed_maix_defconfig +F: drivers/clk/kendryte/ +F: include/configs/sipeed-maix.h +F: include/dt-bindings/*/k210-sysctl.h diff --git a/board/sipeed/maix/Makefile b/board/sipeed/maix/Makefile new file mode 100644 index 0000000000..4acff5b31e --- /dev/null +++ b/board/sipeed/maix/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (c) 2019 Western Digital Corporation or its affiliates.
+obj-y += maix.o diff --git a/board/sipeed/maix/maix.c b/board/sipeed/maix/maix.c new file mode 100644 index 0000000000..f8e773acf7 --- /dev/null +++ b/board/sipeed/maix/maix.c @@ -0,0 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ +/*
- Copyright (C) 2019 Sean Anderson seanga2@gmail.com
- */
+int board_init(void) +{
return 0;+} diff --git a/configs/sipeed_maix_bitm_defconfig b/configs/sipeed_maix_bitm_defconfig new file mode 100644 index 0000000000..22d814ec7f --- /dev/null +++ b/configs/sipeed_maix_bitm_defconfig @@ -0,0 +1,10 @@ +CONFIG_RISCV=y +CONFIG_TARGET_SIPEED_MAIX=y +CONFIG_ARCH_RV64I=y +# CONFIG_LEGACY_IMAGE_FORMAT is not set +# CONFIG_AUTOBOOT is not set +# CONFIG_NET is not set +# CONFIG_INPUT is not set +# CONFIG_MTD is not set +# CONFIG_DM_ETH is not set +# CONFIG_EFI_LOADER is not set diff --git a/doc/board/index.rst b/doc/board/index.rst index 00e72f57cd..2bd740589b 100644 --- a/doc/board/index.rst +++ b/doc/board/index.rst @@ -13,6 +13,7 @@ Board-specific doc freescale/index google/index intel/index
- kendryte/index
We should use the board vendor name: sipeed/index>
That's what I thought, but everything else in this directory is organized by CPU manufacturer. For example, it is
No it's organized by the board manufacturer. It's just the same vendor that happens to the the CPU manufacturer.
Ah, ok. I will change this for v4 then.
doc/board/sifive/fu450.rst, not hifive.rst. Hence the naming scheme
I would vote for changing it to hifive_unleashed.
below.
renesas/index sifive/index xilinx/index[snip]
Regards, Bin