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microwatt/include/microwatt_soc.h

88 lines
3.7 KiB
C

#ifndef __MICROWATT_SOC_H
#define __MICROWATT_SOC_H
/*
* Microwatt SoC memory map
*/
#define MEMORY_BASE 0x00000000 /* "Main" memory alias, either BRAM or DRAM */
#define DRAM_BASE 0x40000000 /* DRAM if present */
#define BRAM_BASE 0x80000000 /* Internal BRAM */
#define SYSCON_BASE 0xc0000000 /* System control regs */
#define UART_BASE 0xc0002000 /* UART */
#define XICS_BASE 0xc0004000 /* Interrupt controller */
#define SPI_FCTRL_BASE 0xc0006000 /* SPI flash controller registers */
#define DRAM_CTRL_BASE 0xc0100000 /* LiteDRAM control registers */
#define SPI_FLASH_BASE 0xf0000000 /* SPI Flash memory map */
#define DRAM_INIT_BASE 0xff000000 /* Internal DRAM init firmware */
/*
* Register definitions for the syscon registers
*/
#define SYS_REG_SIGNATURE 0x00
#define SYS_REG_INFO 0x08
#define SYS_REG_INFO_HAS_UART (1ull << 0)
#define SYS_REG_INFO_HAS_DRAM (1ull << 1)
#define SYS_REG_INFO_HAS_BRAM (1ull << 2)
#define SYS_REG_INFO_HAS_SPI_FLASH (1ull << 3)
#define SYS_REG_BRAMINFO 0x10
#define SYS_REG_BRAMINFO_SIZE_MASK 0xfffffffffffffull
#define SYS_REG_DRAMINFO 0x18
#define SYS_REG_DRAMINFO_SIZE_MASK 0xfffffffffffffull
#define SYS_REG_CLKINFO 0x20
#define SYS_REG_CLKINFO_FREQ_MASK 0xffffffffffull
#define SYS_REG_CTRL 0x28
#define SYS_REG_CTRL_DRAM_AT_0 (1ull << 0)
#define SYS_REG_CTRL_CORE_RESET (1ull << 1)
#define SYS_REG_CTRL_SOC_RESET (1ull << 2)
#define SYS_REG_DRAMINITINFO 0x30
#define SYS_REG_SPI_INFO 0x38
#define SYS_REG_SPI_INFO_FLASH_OFF_MASK 0xffffffff
/*
* Register definitions for the potato UART
*/
#define POTATO_CONSOLE_TX 0x00
#define POTATO_CONSOLE_RX 0x08
#define POTATO_CONSOLE_STATUS 0x10
#define POTATO_CONSOLE_STATUS_RX_EMPTY 0x01
#define POTATO_CONSOLE_STATUS_TX_EMPTY 0x02
#define POTATO_CONSOLE_STATUS_RX_FULL 0x04
#define POTATO_CONSOLE_STATUS_TX_FULL 0x08
#define POTATO_CONSOLE_CLOCK_DIV 0x18
#define POTATO_CONSOLE_IRQ_EN 0x20
/*
* Register definitions for the SPI controller
*/
#define SPI_REG_DATA 0x00 /* Byte access: single wire transfer */
#define SPI_REG_DATA_DUAL 0x01 /* Byte access: dual wire transfer */
#define SPI_REG_DATA_QUAD 0x02 /* Byte access: quad wire transfer */
#define SPI_REG_CTRL 0x04 /* Reset and manual mode control */
#define SPI_REG_CTRL_RESET 0x01 /* reset all registers */
#define SPI_REG_CTRL_MANUAL_CS 0x02 /* assert CS, enable manual mode */
#define SPI_REG_CTRL_CKDIV_SHIFT 8 /* clock div */
#define SPI_REG_CTRL_CKDIV_MASK (0xff << SPI_REG_CTRL_CKDIV_SHIFT)
#define SPI_REG_AUTO_CFG 0x08 /* Automatic map configuration */
#define SPI_REG_AUTO_CFG_CMD_SHIFT 0 /* Command to use for reads */
#define SPI_REG_AUTO_CFG_CMD_MASK (0xff << SPI_REG_AUTO_CFG_CMD_SHIFT)
#define SPI_REG_AUTO_CFG_DUMMIES_SHIFT 8 /* # dummy cycles */
#define SPI_REG_AUTO_CFG_DUMMIES_MASK (0x7 << SPI_REG_AUTO_CFG_DUMMIES_SHIFT)
#define SPI_REG_AUTO_CFG_MODE_SHIFT 11 /* SPI wire mode */
#define SPI_REG_AUTO_CFG_MODE_MASK (0x3 << SPI_REG_AUTO_CFG_MODE_SHIFT)
#define SPI_REG_AUT_CFG_MODE_SINGLE (0 << 11)
#define SPI_REG_AUT_CFG_MODE_DUAL (2 << 11)
#define SPI_REG_AUT_CFG_MODE_QUAD (3 << 11)
#define SPI_REG_AUTO_CFG_ADDR4 (1u << 13) /* 3 or 4 addr bytes */
#define SPI_REG_AUTO_CFG_CKDIV_SHIFT 16 /* clock div */
#define SPI_REG_AUTO_CFG_CKDIV_MASK (0xff << SPI_REG_AUTO_CFG_CKDIV_SHIFT)
#define SPI_REG_AUTO_CFG_CSTOUT_SHIFT 24 /* CS timeout */
#define SPI_REG_AUTO_CFG_CSTOUT_MASK (0x3f << SPI_REG_AUTO_CFG_CSTOUT_SHIFT)
#endif /* __MICROWATT_SOC_H */