#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_ICP_BASE   0xc0004000  /* Interrupt controller */
#define XICS_ICS_BASE   0xc0005000  /* Interrupt controller */
#define SPI_FCTRL_BASE  0xc0006000  /* SPI flash controller registers */
#define DRAM_CTRL_BASE	0xc8000000  /* LiteDRAM control registers */
#define LETH_CSR_BASE	0xc8020000  /* LiteEth CSR registers */
#define LETH_SRAM_BASE	0xc8030000  /* LiteEth MMIO space */
#define SPI_FLASH_BASE  0xf0000000  /* SPI Flash memory map */
#define DRAM_INIT_BASE  0xff000000  /* Internal DRAM init firmware */

/*
 * Interrupt numbers
 */
#define IRQ_UART0       0
#define IRQ_ETHERNET    1

/*
 * 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_INFO_HAS_LITEETH 		(1ull << 4)
#define   SYS_REG_INFO_HAS_LARGE_SYSCON	        (1ull << 5)
#define   SYS_REG_INFO_HAS_UART1 		(1ull << 6)
#define   SYS_REG_INFO_HAS_ARTB                 (1ull << 7)
#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
#define SYS_REG_UART0_INFO		0x40
#define SYS_REG_UART1_INFO		0x48
#define   SYS_REG_UART_IS_16550			(1ull << 32)


/*
 * 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
#define   POTATO_CONSOLE_IRQ_RX				0x01
#define   POTATO_CONSOLE_IRQ_TX				0x02

/*
 * Register definitionss for our standard (16550 style) UART
 */
#define UART_REG_RX       0x00
#define UART_REG_TX       0x00
#define UART_REG_DLL      0x00
#define UART_REG_IER      0x04
#define   UART_REG_IER_RDI      0x01
#define   UART_REG_IER_THRI     0x02
#define   UART_REG_IER_RLSI     0x04
#define   UART_REG_IER_MSI      0x08
#define UART_REG_DLM      0x04
#define UART_REG_IIR      0x08
#define UART_REG_FCR      0x08
#define   UART_REG_FCR_EN_FIFO  0x01
#define   UART_REG_FCR_CLR_RCVR 0x02
#define   UART_REG_FCR_CLR_XMIT 0x04
#define   UART_REG_FCR_TRIG1    0x00
#define   UART_REG_FCR_TRIG4    0x40
#define   UART_REG_FCR_TRIG8    0x80
#define   UART_REG_FCR_TRIG14   0xc0
#define UART_REG_LCR      0x0c
#define   UART_REG_LCR_5BIT	0x00
#define   UART_REG_LCR_6BIT	0x01
#define   UART_REG_LCR_7BIT	0x02
#define   UART_REG_LCR_8BIT	0x03
#define   UART_REG_LCR_STOP     0x04
#define   UART_REG_LCR_PAR      0x08
#define   UART_REG_LCR_EVEN_PAR 0x10
#define   UART_REG_LCR_STIC_PAR 0x20
#define   UART_REG_LCR_BREAK    0x40
#define   UART_REG_LCR_DLAB     0x80
#define UART_REG_MCR      0x10
#define   UART_REG_MCR_DTR      0x01
#define   UART_REG_MCR_RTS      0x02
#define   UART_REG_MCR_OUT1     0x04
#define   UART_REG_MCR_OUT2     0x08
#define   UART_REG_MCR_LOOP     0x10
#define UART_REG_LSR      0x14
#define   UART_REG_LSR_DR       0x01
#define   UART_REG_LSR_OE       0x02
#define   UART_REG_LSR_PE       0x04
#define   UART_REG_LSR_FE       0x08
#define   UART_REG_LSR_BI       0x10
#define   UART_REG_LSR_THRE     0x20
#define   UART_REG_LSR_TEMT     0x40
#define   UART_REG_LSR_FIFOE    0x80
#define UART_REG_MSR      0x18
#define UART_REG_SCR      0x1c


/*
 * 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 */