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README.dk1c20_std32
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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_SDRAM_SIZE
| : | | = 0x01000000
| : | /
0x01000000 ---32-----------16|15------------0- CFG_NIOS_CPU_SDRAM_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 |- - - - - - - -:- - - - - - - -+- - u-boot environment
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 <[email protected]>