#ifndef LIBSYS_H
#define LIBSYS_H

// ---------------------------------------------------------
// Types
// ---------------------------------------------------------
#define INT8							signed char
#define INT16							signed short
#define INT32							signed int
#define INT64							signed long long
#define UINT8							unsigned char
#define UINT16							unsigned short
#define UINT32							unsigned int
#define UINT64							unsigned long long
#define INT								INT32
#define UINT							UINT32
#define FLOAT32							float
#define FLOAT64							double

#define	NO_ERROR						LSYS_SUCCESS
#define	ERROR							LSYS_ERR_BASE
#define	LSYS_SUCCESS					0
#define	LSYS_ERR_BASE					0x80000000

#define	IS_ERROR(e)						((e & LSYS_ERR_BASE) == LSYS_ERR_BASE)

// GPIO
#define	sys_gpio0						0xA0000000
#define	sys_gpio1						0xA0000004
#define	sys_led_port					sys_gpio0
#define	sys_usb_ctrl					sys_gpio1
#define	sys_timer_usec					0xA0000008
#define	sys_timer_sec					0xA000000C

// TIMERs
#define	sys_itim_ctrl					0xA0000018
#define	sys_itim_stat					0xA000001C
#define	sys_itim0_cnt					0xA0000020
#define	sys_itim1_cnt					0xA0000024
#define	sys_itim2_cnt					0xA0000028
#define	sys_itim3_cnt					0xA000002C
#define	sys_itim0_cmp					0xA0000030
#define	sys_itim1_cmp					0xA0000034
#define	sys_itim2_cmp					0xA0000038
#define	sys_itim3_cmp					0xA000003C

// UARTs
#define sys_uart_bit_tx_halffull		0x00000001
#define sys_uart_bit_tx_full			0x00000002
#define sys_uart_bit_rx_halffull		0x00000004
#define sys_uart_bit_rx_full			0x00000008
#define sys_uart_bit_rx_avail			0x00000010
#define sys_uart_bit_tx_inten			0x00000020
#define sys_uart_bit_rx_inten			0x00000040
#define sys_uart_bit_tx_irq				0x00000100
#define sys_uart_bit_rx_irq				0x00000200
#define	sys_uart_data					sys_uart0_data
#define	sys_uart_stat					sys_uart0_stat
#define	sys_uart_baud					sys_uart0_baud
#define	sys_uart0_data					0xA0010000
#define	sys_uart0_stat					0xA0010004
#define	sys_uart0_baud					0xA0010008
#define	sys_uart1_data					0xA0010100
#define	sys_uart1_stat					0xA0010104
#define	sys_uart1_baud					0xA0010108

// PS2s
#define sys_ps2_bit_tx_empty			0x00000001
#define sys_ps2_bit_rx_avail			0x00000004
#define sys_ps2_bit_tx_inten			0x00000020
#define sys_ps2_bit_rx_inten			0x00000040
#define sys_ps2_bit_tx_irq				0x00000100
#define sys_ps2_bit_rx_irq				0x00000200
#define	sys_ps2_0_data					0xA0010200
#define	sys_ps2_0_stat					0xA0010204
#define	sys_ps2_1_data					0xA0010300
#define	sys_ps2_1_stat					0xA0010304

// USB
#define	sys_usb_data					0xA0020000
#define	sys_usb_mbx						0xA0020004
#define	sys_usb_addr					0xA0020008
#define	sys_usb_status					0xA002000C

// VGA
#define	sys_vga_ctrl					0xA0030000	// R/W
#define	sys_vga_bit_cgrdy				0x00000001	// RO
#define	sys_vga_bit_msten				0x00000002	// R/W
#define	sys_vga_bit_clrscr				0x00000010	// WO
#define	sys_vga_bit_clrline				0x00000020	// WO
#define	sys_vga_ascii					0xA0030004	// R/W
#define	sys_vga_posx					0xA0030008	// R/W
#define	sys_vga_posy					0xA003000C	// R/W
#define	sys_vga_cgcol					0xA0030010	// R/W
#define	sys_vga_moffs					0xA0030014	// R/W
#define	sys_vga_resx					0xA0030018	// RO
#define	sys_vga_resy					0xA003001C	// RO
#define	sys_vga_fps						0xA0030020	// RO

// AC'97
#define	sys_ac97_stat					0xA0040000
#define	sys_ac97_ctrl					0xA0040000
#define	sys_ac97_acstat					0xA0040400
#define	sys_ac97_acctrl					0xA0040600
#define	sys_ac97_pcm					0xA0040800
#define	sys_ac97_wavin					sys_ac97_pcm
#define	sys_ac97_wavout					sys_ac97_pcm

// Flash
#define	sys_flash_io					0xA4000000
#define	sys_flash_mem					0x00000000

// Sync. SRAM
#define	sys_ssram_io					0xA8000000

UINT32 CP0_SR_read(void);
void CP0_SR_write(UINT32 val);
UINT32 CP0_CR_read(void);
void CP0_CR_write(UINT32 val);
UINT32 CP0_PRID_read(void);
UINT32 CP0_TR_read(void);
void CP0_TR_write(UINT32 val);
void CP0_TR_write_ptr(UINT32* pPtr);
void CP0_TR_read_ptr(UINT32* pPtr);
void ICACHE_invalidate_all(void);
void ICACHE_invalidate_at(UINT32* pPtr);
void DCACHE_invalidate_all(void);
void DCACHE_invalidate_at(UINT32* pPtr);

#define CALC_BAUD(b) \
	((UINT32)((float)CPU_FREQ_HZ/(16*b) + 0.5f) - 1);

#define	UART0_setbaud(b) \
	*((UINT32*)sys_uart0_baud) = CALC_BAUD(b);

#define	UART1_setbaud(b) \
	*((UINT32*)sys_uart1_baud) = CALC_BAUD(b);

#define	UART2_setbaud(b) \
	*((UINT32*)sys_uart2_baud) = CALC_BAUD(b);

char readchar(UINT32 port);
void writechar(UINT32 port, char c);
int write(int file, char *ptr, int len);
int sputs(char *pStr);
void print_byte(char byte);
void print_word(int word);
void _exit (int exitcode);
void sleep(unsigned ms);

char _getch(void);

void PrintBuffer8(UINT8 *pBuf, int nbpr, int len);
void memdump(UINT8 *pBuf, int print_offset_only, int num_bytes_per_row, int len);

void clr_screen(void);

#endif // LIBSYS_H