| /* |
| * Copyright (c) 2018 - 2019 Antmicro <www.antmicro.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef __RISCV32_LITEX_VEXRISCV_SOC_H_ |
| #define __RISCV32_LITEX_VEXRISCV_SOC_H_ |
| |
| #include "../riscv-privilege/common/soc_common.h" |
| #include <generated_dts_board.h> |
| |
| /* lib-c hooks required RAM defined variables */ |
| #define RISCV_RAM_BASE DT_INST_0_MMIO_SRAM_BASE_ADDRESS |
| #define RISCV_RAM_SIZE DT_INST_0_MMIO_SRAM_SIZE |
| |
| #ifndef _ASMLANGUAGE |
| /* CSR access helpers */ |
| |
| static inline unsigned char litex_read8(unsigned long addr) |
| { |
| return sys_read8(addr); |
| } |
| |
| static inline unsigned short litex_read16(unsigned long addr) |
| { |
| return (sys_read8(addr) << 8) |
| | sys_read8(addr + 0x4); |
| } |
| |
| static inline unsigned int litex_read32(unsigned long addr) |
| { |
| return (sys_read8(addr) << 24) |
| | (sys_read8(addr + 0x4) << 16) |
| | (sys_read8(addr + 0x8) << 8) |
| | sys_read8(addr + 0xc); |
| } |
| |
| static inline void litex_write8(unsigned char value, unsigned long addr) |
| { |
| sys_write8(value, addr); |
| } |
| |
| static inline void litex_write16(unsigned short value, unsigned long addr) |
| { |
| sys_write8(value >> 8, addr); |
| sys_write8(value, addr + 0x4); |
| } |
| |
| static inline void litex_write32(unsigned int value, unsigned long addr) |
| { |
| sys_write8(value >> 24, addr); |
| sys_write8(value >> 16, addr + 0x4); |
| sys_write8(value >> 8, addr + 0x8); |
| sys_write8(value, addr + 0xC); |
| } |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* __RISCV32_LITEX_VEXRISCV_SOC_H_ */ |