jens
ea60299d26
git-svn-id: http://moon:8086/svn/vhdl/trunk@1414 cc03376c-175c-47c8-b038-4cd826a8556b
736 lines
15 KiB
JavaScript
736 lines
15 KiB
JavaScript
; -------------------------------------------------
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; Register definitions
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; -------------------------------------------------
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include "../../../lib/jasm/cregs.inc.jsm"
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include "xregs.inc.jsm"
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; -------------------------------------------------
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; Constants
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; -------------------------------------------------
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BURST_LEN: equ 8
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SD_CMD_WRITE: equ 0x06
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SD_CMD_READ: equ 0x05
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START_ADDR0: equ 0x00
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START_ADDR1: equ 0x00
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START_ADDR2: equ 0x20
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END_ADDR0: equ 0xF8
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END_ADDR1: equ 0xFF
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END_ADDR2: equ 0xFF
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SIO_TIMEOUT0: equ 0xE8
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SIO_TIMEOUT1: equ 0x03
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SIO_BUFSIZE: equ 64
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; External RAM/ROM
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xmem
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crlf: dc 13, 10, 0
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greet_txt: dc "SDRAM Test", 0
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msg_txt0: dc "Clearing SDRAM", 0
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msg_txt1: dc "Writing SDRAM", 0
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msg_txt2: dc "Reading SDRAM", 0
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msg_txt3: dc "Reading Bitmap", 0
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verify_ok: dc "Verify OK", 0
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verify_nok: dc "Failed at ", 0
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dot: dc ".", 0
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org 0x80
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sdram_data: db 8 ; SDRAM data window at X:0x80
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; Internal RAM
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cmem 0
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block_cnt: db 1
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round_cnt: db 1
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bmp_offset: db 4
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pixel_buf: db 24
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sio_rx_buf: db 64
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sio_rx_ptr_r: db 1
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sio_rx_ptr_w: db 1
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sio_timeout: db 2
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; -------------------------------------------------
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; Program
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; -------------------------------------------------
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code
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reset: org 0x000
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jmp main
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; -------------------------------------------------
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; ISR
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; -------------------------------------------------
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org 0x001
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sio_isr: push R0
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push R1
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u_get_nxt: xin R1, (uart_status)
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and R1, 0x10
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jz ex_uart_isr
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xin R0, (uart_data)
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movc R1, (sio_rx_ptr_w)
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movc (R1), R0
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inc R1
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cmp R1, sio_rx_buf+64
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jne u_upd_nxt
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mov R1, sio_rx_buf
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u_upd_nxt: movc (sio_rx_ptr_w), R1
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movc R0, (sio_rx_ptr_r)
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cmp R0, R1
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jne u_get_nxt
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xin R0, (ctrl_reg)
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or R0, 0x20
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xout (ctrl_reg), R0
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jmp u_get_nxt
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ex_uart_isr: call Timer_isr
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pop R1
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pop R0
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reti
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Timer_isr: xin R0, (btn_port)
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and R0, 0x01
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jz btn_chk2
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mov R0, vga_read_addr
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xout (R0), 0x00
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inc R0
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xout (R0), 0x00
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inc R0
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xout (R0), 0x00
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jmp ex_t_isr
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btn_chk2: xin R0, (btn_port)
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and R0, 0x02
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jz ex_t_isr
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mov R0, vga_read_addr
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xout (R0), 0x00
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inc R0
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xout (R0), 0x00
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inc R0
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xout (R0), 0x20
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ex_t_isr: ret
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; -------------------------------------------------
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; Main
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; -------------------------------------------------
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main: call sio_init
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call LCD_init
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mov R0, 0x00
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xout (led_port), R0
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mov R0, CTRL_VGA_ENABLE
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xout (ctrl_reg), R0
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xin R0, (ctrl_reg)
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or R0, CTRL_TIMER_ENABLE
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xout (ctrl_reg), R0
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mov R0, 0x03
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cout (cpu_int_ctrl), R0
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; Clear LCD
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mov R0, LCD_CMD_CLEAR
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call LCD_writecmd
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mov R0, 0
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mov R1, 0xC0
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xout (reg_color_red), R1
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xout (reg_color_grn), R1
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xout (reg_color_blu), R1
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call cg_wait_rdy
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call cg_clr_screen
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; Print greeting message
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mov R1, greet_txt
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call LCD_putsx
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mov R1, greet_txt
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call cg_puts
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mov R1, crlf
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call cg_puts_clr
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xin R0, (ctrl_reg)
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and R0, 0xCF
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xout (ctrl_reg), R0
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mov R0, 0
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movc (round_cnt), R0
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main_loop: call write_uart_data
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; call do_clear
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ML1: call do_write
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call do_read
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movc R0, (round_cnt)
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inc R0
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movc (round_cnt), R0
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jmp ML1
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; ----------------------------------------------------------
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; SDRAM clear
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; ----------------------------------------------------------
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do_clear:
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; Clear LCD
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mov R0, LCD_CMD_CLEAR
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call LCD_writecmd
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; Print Clear message
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mov R1, msg_txt0
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call LCD_putsx
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mov R1, msg_txt0
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call cg_clr_puts
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mov R1, crlf
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call cg_puts_clr
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; Set SDRAM address register to 0
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mov R0, 0
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mov R1, 0
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mov R2, 0
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call AddrCnt_Init
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; Fill SDR Buffer with zeros
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mov R0, sdram_data
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mov R15, 8
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buf_clr_loop: movx (R0), 0
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inc R0
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dec R15
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jnz buf_clr_loop
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sdr_clear: mov R2, BURST_LEN
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poll_clear_full:
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xin R0, (sdram_reg)
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xout (led_port), R0
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and R0, FIFO_STAT_WRITE_DATA_FULL
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jnz poll_clear_full
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; Fill FIFO
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mov R0, FIFO_CTRL_IS_WRITE
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xout (sdram_reg), R0
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sub R2, 2
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jnz poll_clear_full
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; Start SDR write
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call wait_cmd_rdy
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mov R0, SD_CMD_WRITE
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xout (sdram_reg), R0
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xin R0, (sdram_addr+0)
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cmp R0, END_ADDR0
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jne next_addr_c
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xin R0, (sdram_addr+1)
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cmp R0, END_ADDR1
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jne next_addr_c
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xin R0, (sdram_addr+2)
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cmp R0, END_ADDR2
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jeq clear_finished
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; Advance address counter
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next_addr_c: mov R0, BURST_LEN
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call AddrCnt_Inc
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jmp sdr_clear
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clear_finished:
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call AddrCnt_Disp
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call delay1s
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ret
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; ----------------------------------------------------------
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; SDRAM Write
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; ----------------------------------------------------------
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write_uart_data:
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; Clear LCD
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mov R0, LCD_CMD_CLEAR
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call LCD_writecmd
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; Print Clear message
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mov R1, msg_txt3
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call LCD_putsx
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mov R1, msg_txt3
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call cg_clr_puts
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mov R1, crlf
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call cg_puts_clr
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; Set SDRAM address register to 0
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; mov R0, 0xF8 ; 800x600
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; mov R1, 0x52 ; 800x600
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; mov R2, 0x07 ; 800x600
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mov R0, 0xF8 ; 1280x1024
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mov R1, 0xFF ; 1280x1024
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mov R2, 0x13 ; 1280x1024
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call AddrCnt_Init
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read_bmp: mov R15, 0
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skip_hdr1: call sio_getchar
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jc write_uart_data
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inc R15
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cmp R15, 10
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jne skip_hdr1
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call sio_getchar
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jc write_uart_data
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inc R15
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movc (bmp_offset+0), R0
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call sio_getchar
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jc write_uart_data
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inc R15
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movc (bmp_offset+1), R0
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call sio_getchar
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jc write_uart_data
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inc R15
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movc (bmp_offset+2), R0
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call sio_getchar
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jc write_uart_data
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inc R15
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movc (bmp_offset+3), R0
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movc R1, (bmp_offset+0)
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skip_hdr2: call sio_getchar
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jc write_uart_data
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inc R15
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cmp R15, R1
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jne skip_hdr2
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get_pixel: mov R15, 8
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mov R1, pixel_buf+23
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next_pixel: mov R2, 3
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next_color: dec R2
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mov R3, R1
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call sio_getchar
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jc sdw_fin
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sub R3, R2
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movc (R3), R0
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tst R2
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jnz next_color
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sub R1, 3
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dec R15
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jnz next_pixel
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mov R2, BURST_LEN
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; Fill SDR Buffer
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mov R1, pixel_buf
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wls: mov R3, sdram_data
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wls0: movc R0, (R1)
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movx (R3), R0
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inc R1
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inc R3
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cmp R3, sdram_data+6
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jne wls0
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pwf: xin R0, (sdram_reg)
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xout (led_port), R0
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and R0, FIFO_STAT_WRITE_DATA_FULL
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jnz pwf
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; Fill FIFO
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mov R0, FIFO_CTRL_IS_WRITE
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xout (sdram_reg), R0
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sub R2, 2
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jnz wls
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; Start SDR write
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call wait_cmd_rdy
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mov R0, SD_CMD_WRITE
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xout (sdram_reg), R0
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call AddrCnt_Disp
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xin R0, (sdram_addr+0)
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tst R0
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jnz next_addr
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xin R0, (sdram_addr+1)
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tst R0
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jnz next_addr
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xin R0, (sdram_addr+2)
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tst R0
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jz sdw_fin
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; Advance address counter
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next_addr: mov R0, BURST_LEN
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call AddrCnt_Dec
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jmp get_pixel
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sdw_fin: call delay1s
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ret
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; ----------------------------------------------------------
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; SDRAM Write
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; ----------------------------------------------------------
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do_write:
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; Clear LCD
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mov R0, LCD_CMD_CLEAR
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call LCD_writecmd
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; Print Write message
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mov R1, msg_txt1
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call LCD_putsx
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mov R1, msg_txt1
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call cg_clr_puts
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mov R1, crlf
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call cg_puts_clr
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; Set SDRAM address register to 0
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mov R0, START_ADDR0
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mov R1, START_ADDR1
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mov R2, START_ADDR2
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call AddrCnt_Init
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movc R0, (round_cnt)
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movc (block_cnt), R0
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sdr_write: mov R2, BURST_LEN
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; Fill SDR Buffer
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sdr_burst_wr: movc R1, (block_cnt)
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mov R0, sdram_data
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mov R15, 8
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write_loop: movx (R0), R1
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inc R0
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inc R1
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dec R15
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jnz write_loop
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poll_write_full:
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xin R0, (sdram_reg)
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xout (led_port), R0
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and R0, FIFO_STAT_WRITE_DATA_FULL
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jnz poll_write_full
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; Fill FIFO
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mov R0, FIFO_CTRL_IS_WRITE
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xout (sdram_reg), R0
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movc R0, (block_cnt)
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inc R0
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movc (block_cnt), R0
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sub R2, 2
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jnz sdr_burst_wr
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; Start SDR write
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call wait_cmd_rdy
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mov R0, SD_CMD_WRITE
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xout (sdram_reg), R0
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xin R0, (sdram_addr+0)
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cmp R0, END_ADDR0
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jne next_addr_w
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xin R0, (sdram_addr+1)
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cmp R0, END_ADDR1
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jne next_addr_w
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xin R0, (sdram_addr+2)
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cmp R0, END_ADDR2
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jeq write_finished
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; Advance address counter
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next_addr_w: mov R0, BURST_LEN
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call AddrCnt_Inc
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jmp sdr_write
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write_finished: call AddrCnt_Disp
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call delay1s
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ret
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; ----------------------------------------------------------
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; SDRAM Verify
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; ----------------------------------------------------------
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do_read:
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; Clear LCD
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mov R0, LCD_CMD_CLEAR
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call LCD_writecmd
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; Print Read message
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mov R1, msg_txt2
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call LCD_putsx
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mov R1, msg_txt2
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call cg_clr_puts
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mov R1, crlf
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call cg_puts_clr
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; Set SDRAM address register to 0
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mov R0, START_ADDR0
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mov R1, START_ADDR1
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mov R2, START_ADDR2
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call AddrCnt_Init
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movc R0, (round_cnt)
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movc (block_cnt), R0
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; flush_data
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flush_data: xin R0, (sdram_reg)
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xout (led_port), R0
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and R0, FIFO_STAT_READ_DATA_EMPTY
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jnz sdr_read
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mov R0, FIFO_CTRL_IS_READ
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xout (sdram_reg), R0
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jmp flush_data
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sdr_read: ; Start SDR read
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call wait_cmd_rdy
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mov R0, SD_CMD_READ
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xout (sdram_reg), R0
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mov R3, BURST_LEN
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; Wait last read
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poll_read_fin: xin R0, (sdram_reg)
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xout (led_port), R0
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and R0, FIFO_STAT_READ_DATA_EMPTY
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jnz poll_read_fin
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; Verify SDR Buffer
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movc R1, (block_cnt)
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mov R0, sdram_data
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mov R15, 8
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read_loop: movx R2, (R0)
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cmp R2, R1
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jne verify_error
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inc R0
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inc R1
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dec R15
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jnz read_loop
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; Advance Read-FIFO
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mov R0, FIFO_CTRL_IS_READ
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xout (sdram_reg), R0
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movc R0, (block_cnt)
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inc R0
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movc (block_cnt), R0
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sub R3, 2
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jnz poll_read_fin
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xin R0, (sdram_addr+0)
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cmp R0, END_ADDR0
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jne next_addr_r
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xin R0, (sdram_addr+1)
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cmp R0, END_ADDR1
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jne next_addr_r
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xin R0, (sdram_addr+2)
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cmp R0, END_ADDR2
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jeq read_finished
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; Advance address counter
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next_addr_r: mov R0, BURST_LEN
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call AddrCnt_Inc
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jmp sdr_read
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; ----------------------------------------------------------
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wait_cmd_rdy: push R0
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wait4cmd: xin R0, (sdram_reg)
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xout (led_port), R0
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and R0, FIFO_STAT_CMD_FULL
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jnz wait4cmd
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pop R0
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ret
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; ----------------------------------------------------------
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read_finished:
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no_error: mov R0, LCD_CMD_CLEAR
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call LCD_writecmd
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mov R1, verify_ok
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call LCD_putsx
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mov R0, LCD_CMD_Z2
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call LCD_writecmd
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call print_addr
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mov R1, verify_ok
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call cg_clr_puts
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mov R1, crlf
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call cg_puts_clr
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jmp ende
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verify_error: mov R0, LCD_CMD_CLEAR
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call LCD_writecmd
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mov R1, verify_nok
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call LCD_putsx
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call print_addr
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call print_data
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mov R1, verify_nok
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call cg_clr_puts
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mov R1, crlf
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call cg_puts_clr
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xin R0, (ctrl_reg)
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or R0, 0x10
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xout (ctrl_reg), R0
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jmp ende
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ende: call delay1s
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ret
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; -------------------------------------------------
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AddrCnt_Init: xout (sdram_addr+0), R0
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xout (sdram_addr+1), R1
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xout (sdram_addr+2), R2
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ret
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; -------------------------------------------------
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; Parameter
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; R0: increment value
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AddrCnt_Inc: push R1
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push R2
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push R3
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xin R1, (sdram_addr+0)
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xin R2, (sdram_addr+1)
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|
xin R3, (sdram_addr+2)
|
|
add R1, R0
|
|
addc R2, 0
|
|
addc R3, 0
|
|
xout (sdram_addr+0), R1
|
|
xout (sdram_addr+1), R2
|
|
xout (sdram_addr+2), R3
|
|
pop R3
|
|
pop R2
|
|
pop R1
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
; Parameter
|
|
; R0: decrement value
|
|
AddrCnt_Dec: push R1
|
|
push R2
|
|
push R3
|
|
xin R1, (sdram_addr+0)
|
|
xin R2, (sdram_addr+1)
|
|
xin R3, (sdram_addr+2)
|
|
sub R1, R0
|
|
subc R2, 0
|
|
subc R3, 0
|
|
xout (sdram_addr+0), R1
|
|
xout (sdram_addr+1), R2
|
|
xout (sdram_addr+2), R3
|
|
pop R3
|
|
pop R2
|
|
pop R1
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
; Display Address counter
|
|
AddrCnt_Disp: mov R0, LCD_CMD_Z2
|
|
call LCD_writecmd
|
|
call print_addr
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
; PutHexByte
|
|
; R0 : Byte value
|
|
PutHexByte: push R1
|
|
call bin2hex
|
|
call LCD_writechar
|
|
mov R0, R1
|
|
call LCD_writechar
|
|
pop R1
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
print_addr: push R0
|
|
xin R0, (sdram_addr+2)
|
|
call PutHexByte
|
|
xin R0, (sdram_addr+1)
|
|
call PutHexByte
|
|
xin R0, (sdram_addr+0)
|
|
call PutHexByte
|
|
pop R0
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
; R1 : ptr to byte array
|
|
print_dword: push R0
|
|
add R1, 3
|
|
movc R0, (R1)
|
|
call PutHexByte
|
|
dec R1
|
|
movc R0, (R1)
|
|
call PutHexByte
|
|
dec R1
|
|
movc R0, (R1)
|
|
call PutHexByte
|
|
dec R1
|
|
movc R0, (R1)
|
|
call PutHexByte
|
|
pop R0
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
print_data: push R0
|
|
mov R0, LCD_CMD_Z2
|
|
call LCD_writecmd
|
|
movx R0, (sdram_data+7)
|
|
call PutHexByte
|
|
movx R0, (sdram_data+6)
|
|
call PutHexByte
|
|
movx R0, (sdram_data+5)
|
|
call PutHexByte
|
|
movx R0, (sdram_data+4)
|
|
call PutHexByte
|
|
movx R0, (sdram_data+3)
|
|
call PutHexByte
|
|
movx R0, (sdram_data+2)
|
|
call PutHexByte
|
|
movx R0, (sdram_data+1)
|
|
call PutHexByte
|
|
movx R0, (sdram_data+0)
|
|
call PutHexByte
|
|
pop R0
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
sio_init: push R0
|
|
mov R0, 13
|
|
xout (uart_baudrate), R0
|
|
mov R0, sio_rx_buf
|
|
movc (sio_rx_ptr_r), R0
|
|
movc (sio_rx_ptr_w), R0
|
|
mov R0, SIO_TIMEOUT0
|
|
movc (sio_timeout+0), R0
|
|
mov R0, SIO_TIMEOUT1
|
|
movc (sio_timeout+1), R0
|
|
pop R0
|
|
ret
|
|
|
|
; -------------------------------------------------
|
|
; Params: none
|
|
; Return:
|
|
; R0 : received character
|
|
sio_getchar: push R1
|
|
push R2
|
|
push R3
|
|
movc R2, (sio_timeout+0)
|
|
movc R3, (sio_timeout+1)
|
|
movc R1, (sio_rx_ptr_r)
|
|
sio_wait_rx: movc R0, (sio_rx_ptr_w)
|
|
cmp R0, R1
|
|
jeq wait_rx_stub
|
|
movc R0, (R1)
|
|
inc R1
|
|
cmp R1, sio_rx_buf+64
|
|
jne u_upd_r_ptr
|
|
mov R1, sio_rx_buf
|
|
u_upd_r_ptr: movc (sio_rx_ptr_r), R1
|
|
clrc
|
|
ex_sio_gc: pop R3
|
|
pop R2
|
|
pop R1
|
|
ret
|
|
wait_rx_stub: call delay1ms
|
|
dec R2
|
|
subc R3, 0
|
|
jnz sio_wait_rx
|
|
tst R2
|
|
jnz sio_wait_rx
|
|
sio_to: setc
|
|
jmp ex_sio_gc
|
|
|
|
; -------------------------------------------------
|
|
include "../../../lib/jasm/utils.inc.jsm"
|
|
include "../../../lib/jasm/lcd.inc.jsm"
|
|
include "../../../lib/jasm/cg.inc.jsm"
|
|
include "../../../lib/jasm/delays.inc.jsm"
|
|
include "../../../lib/jasm/uart.inc.jsm"
|
|
|