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+
+TODO: specify IDE i/f
+ specify ASMI i/f
+ specify OCI
+
+
+===============================================================================
+ C P U , M E M O R Y , I N / O U T C O M P O N E N T S
+===============================================================================
+see also [1]-[6]
+
+CPU: "standard_32"
+ 32 bit NIOS for 50 MHz
+ 256 Byte for register file (15 levels)
+ 4 KByte instruction cache (2 bytes in each cache line)
+ 4 KByte data cache (4 bytes in each cache line)
+ 2 KByte On Chip ROM with GERMS boot monitor
+ no On Chip RAM
+ MSTEP multiplier
+ no Debug Core
+ On Chip Instrumentation (OCI) enabled
+
+ U-Boot CFG: CFG_NIOS_CPU_CLK = 50000000
+ CFG_NIOS_CPU_ICACHE = 4096
+ CFG_NIOS_CPU_DCACHE = 4096
+ CFG_NIOS_CPU_REG_NUMS = 256
+ CFG_NIOS_CPU_MUL = 0
+ CFG_NIOS_CPU_MSTEP = 1
+ CFG_NIOS_CPU_DBG_CORE = 0
+
+OCI: (TODO)
+
+IRQ: Nr. | used by
+ ------+--------------------------------------------------------
+ 16 | TIMER0 | CFG_NIOS_CPU_TIMER0_IRQ = 16
+ 25 | UART0 | CFG_NIOS_CPU_UART0_IRQ = 25
+ 30 | LAN91C111 | CFG_NIOS_CPU_LAN0_IRQ = 30
+ 35 | PIO5 | CFG_NIOS_CPU_PIO5_IRQ = 35
+ 40 | PIO0 | CFG_NIOS_CPU_PIO0_IRQ = 40
+ 45 | ASMI | CFG_NIOS_CPU_ASMI0_IRQ = 45
+ 50 | TIMER1 | CFG_NIOS_CPU_TIMER1_IRQ = 50
+
+MEMORY: 8 MByte Flash
+ 1 MByte SRAM
+ 16 MByte SDRAM
+
+ASMI: (TODO) <-- ASMI part is 4M bits
+
+Timer: TIMER0: high priority programmable timer (IRQ16)
+ TIMER1: low priority fixed timer for 10 ms @ 50 MHz (IRQ50)
+
+ U-Boot CFG: CFG_NIOS_CPU_TICK_TIMER = 1
+ CFG_NIOS_CPU_USER_TIMER = 0
+
+PIO: Nr. | description
+ ------+--------------------------------------------------------
+ PIO0 | BUTTON: 4 inputs for user push buttons (IRQ40)
+ PIO1 | LCD: 11 in/outputs for ASCII LCD
+ PIO2 | LED: 8 outputs for user LEDs
+ PIO3 | SEVENSEG: 16 outputs for user seven segment display
+ PIO4 | RECONF: 1 in/output for . . . . . . . . . . . .
+ PIO5 | CFPRESENT: 1 input for CF present event (IRQ35)
+ PIO6 | CFPOWER: 1 output to controll CF power supply
+ PIO7 | CFATASEL: 1 output to controll CF ATA card select
+
+ U-Boot CFG: CFG_NIOS_CPU_BUTTON_PIO = 0
+ CFG_NIOS_CPU_LCD_PIO = 1
+ CFG_NIOS_CPU_LED_PIO = 2
+ CFG_NIOS_CPU_SEVENSEG_PIO = 3
+ CFG_NIOS_CPU_RECONF_PIO = 4
+ CFG_NIOS_CPU_CFPRESENT_PIO = 5
+ CFG_NIOS_CPU_CFPOWER_PIO = 6
+ CFG_NIOS_CPU_CFATASEL_PIO = 7
+
+UART: UART0: fixed baudrate of 115200, fixed protocol 8N1,
+ without handshake RTS/CTS (IRQ25)
+
+LAN: SMsC LAN91C111 with:
+ - offset 0x300 (LAN91C111_REGISTERS_OFFSET)
+ - data bus width 32 bit (LAN91C111_DATA_BUS_WIDTH)
+
+IDE: (TODO)
+
+
+===============================================================================
+ M E M O R Y M A P
+===============================================================================
+
+- - - - - - - - - - - external memory 2 - - - - - - - - - - - - - - - - - - -
+
+ 0x02000000 ---32-----------16|15------------0-
+ | : | \
+ | : | |
+ SDRAM | : | > CFG_NIOS_CPU_SRAM_SIZE
+ | : | | = 0x01000000
+ | : | /
+ 0x01000000 ---32-----------16|15------------0- CFG_NIOS_CPU_SRAM_BASE
+ | |
+ : gap :
+ : :
+
+- - - - - - - - - - - on chip i/o - - - - - - - - - - - - - - - - - - -
+
+ : :
+ : gap :
+ | |
+ 0x________ ---32-----------16|15------------0-
+ | | | \
+ : (real size : : |
+ ASMI i/f : and content : : > 0x________
+ [5] : unknown) : : |
+ | | | /
+ 0x00920b00 ---32-----------16|15------------0- CFG_NIOS_CPU_ASMI0
+ | |
+ : gap :
+ | |
+ 0x00920a80 ---32-----------16|15------------0-
+ | | | \
+ : (real size : : |
+ IDE i/f : and content : : > 0x00000080
+ [6] : unknown) : : |
+ | | | /
+ 0x00920a00 ---32-----------16|15------------0- CFG_NIOS_CPU_IDE0
+ | (unused) | \
+ + 0x1c |- - - - - - - - - - - - - - - -| |
+ | (unused) | |
+ + 0x18 |- - - - - - - - - - - - - - - -| |
+ | (unused) | |
+ + 0x14 |- - - - - - - - - - - - - - - -| |
+ TIMER1 | (unused) | |
+ [3] + 0x10 |- - - - - - - - - - - - - - - -| > 0x00000020
+ | (unused) | |
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ | (unused) | |
+ + 0x08 |- - - - - - - - - - - - - - - -| |
+ | control (1 bit) (rw) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | status (2 bit) (rw) | /
+ 0x009209e0 ---32-----------16|15------------0- CFG_NIOS_CPU_TIMER1
+ | (unused) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO7 | (unused) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | (unused) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (1 bit) (wo) | /
+ 0x009209d0 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO7
+ | (unused) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO6 | (unused) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | (unused) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (1 bit) (wo) | /
+ 0x009209c0 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO6
+ | edgecapture (1 bit) (rw) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO5 | interruptmask (1 bit) (rw) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | (unused) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (1 bit) (ro) | /
+ 0x009209b0 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO5
+ | (unused) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO4 | (unused) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | direction (1 bit) (rw) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (1 bit) (rw) | /
+ 0x009209a0 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO4
+ | (unused) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO3 | (unused) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | (unused) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (16 bit) (wo) | /
+ 0x00920990 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO3
+ | (unused) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO2 | (unused) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | (unused) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (8 bit) (wo) | /
+ 0x00920980 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO2
+ | (unused) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO1 | (unused) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | direction (11 bit) (rw) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (11 bit) (rw) | /
+ 0x00920970 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO1
+ | edgecapture (4 bit) (rw) | \
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ PIO0 | interruptmask (4 bit) (rw) | |
+ [4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
+ | (unused) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | data (4 bit) (ro) | /
+ 0x00920960 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO0
+ | (unused) | \
+ + 0x1c |- - - - - - - - - - - - - - - -| |
+ | (unused) | |
+ + 0x18 |- - - - - - - - - - - - - - - -| |
+ | snaph (16 bit) (rw) | |
+ + 0x14 |- - - - - - - - - - - - - - - -| |
+ TIMER0 | snapl (16 bit) (rw) | |
+ [3] + 0x10 |- - - - - - - - - - - - - - - -| > 0x00000020
+ | periodh (16 bit) (rw) | |
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ | periodl (16 bit) (rw) | |
+ + 0x08 |- - - - - - - - - - - - - - - -| |
+ | control (4 bit) (rw) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | status (2 bit) (rw) | /
+ 0x00920940 ---32-----------16|15------------0- CFG_NIOS_CPU_TIMER0
+ | | \
+ : gap : > (space for UART1)
+ | | /
+ 0x00920920 ---32-----------16|15------------0-
+ | (unused) | \
+ + 0x1c |- - - - - - - - - - - - - - - -| |
+ | (unused) | |
+ + 0x18 |- - - - - - - - - - - - - - - -| |
+ | (unused) | |
+ + 0x14 |- - - - - - - - - - - - - - - -| |
+ UART0 | (unused) | > 0x00000020
+ [2] + 0x10 |- - - - - - - - - - - - - - - -| |
+ | control (10 bit) (rw) | |
+ + 0x0c |- - - - - - - - - - - - - - - -| |
+ | status (10 bit) (rw) | |
+ + 0x08 |- - - - - - - - - - - - - - - -| |
+ | txdata (8 bit) (wo) | |
+ + 0x04 |- - - - - - - - - - - - - - - -| |
+ | rxdata (8 bit) (ro) | /
+ 0x00920900 ---32-----------16|15------------0- CFG_NIOS_CPU_UART0
+
+- - - - - - - - - - - on chip debugging - - - - - - - - - - - - - - - - - - -
+
+ 0x00920900 -----------------------------------
+ | | \
+ : (real size : |
+ OCI Debug : and content : > CFG_NIOS_CPU_OCI_SIZE
+ : unknown) : | = 0x00000100
+ | | /
+ 0x00920800 ----------------------------------- CFG_NIOS_CPU_OCI_BASE
+
+- - - - - - - - - - - on chip memory - - - - - - - - - - -
+
+ 0x00920800 ---32-----------16|15------------0-
+ | : | \
+ | : | |
+ GERMS | : | > CFG_NIOS_CPU_ROM_SIZE
+ | : | | = 0x00000800
+ | : | /
+ 0x00920000 |- - - - - - - - - - - - - - - -+- - CFG_NIOS_CPU_RST_VECT
+ 0x00920000 ---32-----------16|15------------0- CFG_NIOS_CPU_ROM_BASE
+
+- - - - - - - - - - - external i/o - - - - - - - - - - - - - - - - - - -
+
+ 0x00920000 ---32-----------16|15------------0-
+ | gap | \
+ 0x00910310 --+-------------------------------| |
+ | | |
+ | register bank (size = 0x10) | |
+ | +--------.---.---.--- | |
+ | | bank 0 \ 1 \ 2 \ 3 \ | |
+ | |---------------------------+ | |
+ LAN91C111 | | BANK | RESERVED | | |
+ | |- - - - - - -|- - - - - - -| | > na_lan91c111_size
+ | | RPCR | MIR | | | = 0x00010000
+ | |- - - - - - -|- - - - - - -| | |
+ | | COUNTER | RCR | | |
+ | |- - - - - - -|- - - - - - -| | |
+ | | EPH STATUS | TCR | | |
+ | +---------------------------+ | |
+ 0x00910300 --+--LAN91C111_REGISTERS_OFFSET---| |
+ | gap | /
+ 0x00910000 ---32-----------16|15------------0- CFG_NIOS_CPU_LAN0_BASE
+ | |
+ : gap :
+ : :
+
+- - - - - - - - - - - external memory 1 - - - - - - - - - - - - - - - - - - -
+
+ : :
+ : gap :
+ | |
+ 0x00900000 ---32-----------16|15------------0-
+ 0x00900000 --+32-----------16|15------------0+
+ | : | \ \
+ | : | | |
+ | : | | > CFG_NIOS_CPU_VEC_SIZE
+ | : | | | = 0x00000100
+ | : | | /
+ 0x008fff00 |- - - - - - - -:- - - - - - - -+-|- CFG_NIOS_CPU_VEC_BASE
+ 0x008fff00 |- - - - - - - -:- - - - - - - -+-|- CFG_NIOS_CPU_STACK
+ | : | | \
+ | : | | |
+ | : | | > stack area
+ | : | | |
+ | : | | V
+ | : | |
+ SRAM | : | > CFG_NIOS_CPU_SRAM_SIZE
+ | : | | = 0x00100000
+ | : | /
+ 0x00800000 ---32-----------16|15------------0- CFG_NIOS_CPU_SRAM_BASE
+ 0x00800000 ---8-------------4|3-------------0-
+ | sector 127 | \
+ + 0x7f0000 |- - - - - - - - - - - - - - - -| |
+ | : | |
+ Flash |- - - - : - - - -| > CFG_NIOS_CPU_FLASH_SIZE
+ | sector 1 : | | = 0x00800000
+ + 0x010000 |- - - - - - - - - - - - - - - -| |
+ | sector 0 (size = 0x10000) | /
+ 0x00000000 ---8-------------4|3-------------0- CFG_NIOS_CPU_FLASH_BASE
+
+
+===============================================================================
+ F L A S H M E M O R Y A L L O C A T I O N
+===============================================================================
+
+ 0x00800000 ---8-------------4|3-------------0-
+ | : | \
+ SAFE | : | > 1 MByte
+ FPGA conf. | : | / (NOT usable by software)
+ 0x00700000 --+- - - - - - - -:- - - - - - - -+-
+ | : | \
+ USER | : | > 1 MByte
+ FPGA conf. | : | / (NOT usable by software)
+ 0x00600000 --+- - - - - - - -:- - - - - - - -+-
+ | : | \
+ | : | |
+ WEB pages | : | > 2 MByte
+ | : | | (provisory usable)
+ | : | /
+ 0x00400000 --+- - - - - - - -:- - - - - - - -+-
+ | : | \
+ | : | |
+ | : | |
+ | : | > 4 MByte free for use
+ | : | |
+ 0x00040000 --+- - - - - - - -:- - - - - - - -+-|- u-boot _start()
+ | : | /
+ 0x00000000 ---8-------------4|3-------------0-
+
+
+===============================================================================
+ R E F E R E N C E S
+===============================================================================
+[1] http://www.altera.com/literature/manual/mnl_nios_board_cyclone_1c20.pdf
+[2] http://www.altera.com/literature/ds/ds_nios_uart.pdf
+[3] http://www.altera.com/literature/ds/ds_nios_timer.pdf
+[4] http://www.altera.com/literature/ds/ds_nios_pio.pdf
+[5] http://www.altera.com/literature/ds/ds_nios_asmi.pdf
+ http://www.altera.com/literature/wp/wp_epcs_cyc.pdf
+[6] http://www.opencores.org/projects/ata/
+ http://www.t13.org/index.html
+
+
+===============================================================================
+Stephan Linz <linz@li-pro.net>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 03:40:26 +0000