[PATCH v2 07/11] riscv: Add initial Sipeed Maix support
Sean Anderson
seanga2 at gmail.com
Thu Jan 16 00:04:27 CET 2020
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 at gmail.com>
---
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 | 41 +++++++++++++
board/sipeed/maix/MAINTAINERS | 13 +++++
board/sipeed/maix/Makefile | 5 ++
board/sipeed/maix/maix.c | 9 +++
configs/sipeed_maix_bitm_defconfig | 93 ++++++++++++++++++++++++++++++
include/configs/sipeed-maix.h | 19 ++++++
7 files changed, 184 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 include/configs/sipeed-maix.h
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 4f8c62dcff..4c62b8dd77 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..9259eb34aa
--- /dev/null
+++ b/board/sipeed/maix/Kconfig
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (C) 2019 Sean Anderson <seanga2 at 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 NR_CPUS
+ default 2
+
+config NR_DRAM_BANKS
+ default 2
+
+config BOARD_SPECIFIC_OPTIONS
+ def_bool y
+ select GENERIC_RISCV
+ select DM_SERIAL
+ select SIFIVE_SERIAL
+ select ARCH_DEFAULT_RV64I
+ select ENV_IS_NOWHERE
+ select SYS_RISCV_NOCOUNTER
+ imply SIFIVE_CLINT
+ imply SPI
+ imply DM_GPIO
+ imply CMD_GPIO
+ imply SYS_NS16550
+ imply SYS_MALLOC_F
+endif
diff --git a/board/sipeed/maix/MAINTAINERS b/board/sipeed/maix/MAINTAINERS
new file mode 100644
index 0000000000..217de45970
--- /dev/null
+++ b/board/sipeed/maix/MAINTAINERS
@@ -0,0 +1,13 @@
+Sipeed Maix BOARD
+M: Sean Anderson <seanga2 at gmail.com>
+S: Maintained
+F: arch/riscv/dts/k210.dtsi
+F: arch/riscv/dts/k210-maix-bit.dts
+F: arch/riscv/include/asm/k210_sysctl.h
+F: arch/riscv/lib/k210_sysctl.c
+F: board/sipeed/maix/
+F: configs/sipeed_maix_defconfig
+F: drivers/clk/kendryte/
+F: include/configs/sipeed-maix.h
+F: include/dt-bindings/clock/k210-sysctl.h
+F: include/dt-bindings/reset/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 at 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..f062cc8c58
--- /dev/null
+++ b/configs/sipeed_maix_bitm_defconfig
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (C) 2019 Sean Anderson <seanga2 at gmail.com>
+CONFIG_CREATE_ARCH_SYMLINK=y
+CONFIG_RISCV=y
+CONFIG_SYS_ARCH="riscv"
+CONFIG_SYS_CPU="generic"
+CONFIG_SYS_VENDOR="sipeed"
+CONFIG_SYS_BOARD="maix"
+CONFIG_SYS_CONFIG_NAME="sipeed-maix"
+CONFIG_SPL_LDSCRIPT="arch/riscv/cpu/u-boot-spl.lds"
+CONFIG_SYS_TEXT_BASE=0x80000000
+CONFIG_SYS_MALLOC_F_LEN=0x1000
+CONFIG_BOARD_SPECIFIC_OPTIONS=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_BOOTSTAGE_STASH_ADDR=0
+CONFIG_64BIT=y
+CONFIG_TARGET_SIPEED_MAIX=y
+CONFIG_NR_CPUS=2
+CONFIG_GENERIC_RISCV=y
+CONFIG_ARCH_DEFAULT_RV64I=y
+CONFIG_ARCH_RV64I=y
+CONFIG_CMODEL_MEDLOW=y
+CONFIG_RISCV_MMODE=y
+CONFIG_RISCV_ISA_C=y
+CONFIG_RISCV_ISA_A=y
+CONFIG_SIFIVE_CLINT=y
+CONFIG_K210_SYSCTL=y
+CONFIG_SYS_RISCV_NOCOUNTER=y
+CONFIG_ARCH_K210=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYS_MALLOC_F=y
+CONFIG_PHYS_64BIT=y
+# CONFIG_ANDROID_BOOT_IMAGE is not set
+# CONFIG_FIT is not set
+# CONFIG_LEGACY_IMAGE_FORMAT is not set
+CONFIG_LOG=y
+CONFIG_ARCH_EARLY_INIT_R=y
+CONFIG_CMDLINE=y
+CONFIG_CMD_ENV_EXISTS=y
+CONFIG_CMD_FLASH=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_LOG=y
+# CONFIG_AUTOBOOT is not set
+# CONFIG_CMD_BDI is not set
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_BOOTM is not set
+# CONFIG_CMD_BOOTZ is not set
+CONFIG_CMD_BOOTI=y
+CONFIG_BOOTM_LINUX=y
+# CONFIG_CMD_ELF is not set
+CONFIG_CMD_FDT=y
+CONFIG_SUPPORT_OF_CONTROL=y
+CONFIG_DTC=y
+CONFIG_OF_CONTROL=y
+CONFIG_OF_SEPARATE=y
+CONFIG_ENV_IS_NOWHERE=y
+# CONFIG_NET is not set
+CONFIG_DM=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_SIMPLE_BUS=y
+CONFIG_OF_TRANSLATE=y
+CONFIG_CLK=y
+CONFIG_CLK_CCF=y
+CONFIG_CLK_COMPOSITE_CCF=y
+CONFIG_CPU=y
+CONFIG_CPU_RISCV=y
+CONFIG_MMC=y
+# CONFIG_INPUT is not set
+CONFIG_DM_MMC=y
+CONFIG_MMC_SPI=y
+CONFIG_MMC_QUIRKS=y
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+# CONFIG_DM_ETH is not set
+# CONFIG_PCI is not set
+CONFIG_BAUDRATE=115200
+CONFIG_SERIAL_PRESENT=y
+CONFIG_DM_SERIAL=y
+CONFIG_SIFIVE_SERIAL=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_SPI_MEM=y
+CONFIG_DESIGNWARE_SPI=y
+CONFIG_TIMER=y
+CONFIG_RISCV_TIMER=y
+CONFIG_PANIC_HANG=y
+CONFIG_OF_LIBFDT=y
+# CONFIG_EFI_LOADER is not set
diff --git a/include/configs/sipeed-maix.h b/include/configs/sipeed-maix.h
new file mode 100644
index 0000000000..598f7dfdd0
--- /dev/null
+++ b/include/configs/sipeed-maix.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019 Sean Anderson <seanga2 at gmail.com>
+ */
+
+#ifndef CONFIGS_SIPEED_MAIX_H
+#define CONFIGS_SIPEED_MAIX_H
+
+#include <linux/sizes.h>
+
+#define CONFIG_SYS_LOAD_ADDR 0x80000000
+#define CONFIG_SYS_SDRAM_BASE CONFIG_SYS_LOAD_ADDR
+#define CONFIG_SYS_SDRAM_SIZE SZ_8M
+/* Start just below AI memory */
+#define CONFIG_SYS_INIT_SP_ADDR 0x805FFFFF
+#define CONFIG_SYS_MALLOC_LEN SZ_1K
+#define CONFIG_SYS_CACHELINE_SIZE 64
+
+#endif /* CONFIGS_SIPEED_MAIX_H */
--
2.24.1
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