From a7c81fc8532669822b454f4a0c967d24bfd14f9d Mon Sep 17 00:00:00 2001 From: Sean Anderson Date: Wed, 24 Jun 2020 06:41:25 -0400 Subject: riscv: Add Sipeed Maix support 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 . Documentation for the Kendryte K210 is located at . However, hardware details are rather lacking, so most technical reference has been taken from the standalone sdk located at . Signed-off-by: Sean Anderson --- include/configs/sipeed-maix.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 include/configs/sipeed-maix.h (limited to 'include') diff --git a/include/configs/sipeed-maix.h b/include/configs/sipeed-maix.h new file mode 100644 index 0000000000..a46473fc78 --- /dev/null +++ b/include/configs/sipeed-maix.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2019-20 Sean Anderson + */ + +#ifndef CONFIGS_SIPEED_MAIX_H +#define CONFIGS_SIPEED_MAIX_H + +#include + +#define CONFIG_SYS_LOAD_ADDR 0x80000000 +/* Start just below the second bank so we don't clobber it during reloc */ +#define CONFIG_SYS_INIT_SP_ADDR 0x803FFFFF +#define CONFIG_SYS_MALLOC_LEN SZ_128K +#define CONFIG_SYS_CACHELINE_SIZE 64 + +#define CONFIG_SYS_SDRAM_BASE 0x80000000 +/* Don't relocate into AI ram since it isn't set up yet */ +#define CONFIG_SYS_SDRAM_SIZE (SZ_4M + SZ_2M) + +/* For early init */ +#define K210_SYSCTL_BASE 0x50440000 + +#endif /* CONFIGS_SIPEED_MAIX_H */ -- cgit v1.2.3