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TODO: specify IDE i/f
===============================================================================
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]-[5]
CPU: "LDK2"
32 bit NIOS for 75 MHz
512 Byte for register file (30 levels)
with out instruction cache
with out data cache
2 KByte On Chip ROM with GERMS boot monitor
with out On Chip RAM
MSTEP multiplier
no Debug Core
no On Chip Instrumentation (OCI)
U-Boot CFG: CFG_NIOS_CPU_CLK = 75000000
CFG_NIOS_CPU_ICACHE = (not present)
CFG_NIOS_CPU_DCACHE = (not present)
CFG_NIOS_CPU_REG_NUMS = 512
CFG_NIOS_CPU_MUL = 0
CFG_NIOS_CPU_MSTEP = 1
CFG_NIOS_CPU_DBG_CORE = 0
IRQ: Nr. | used by
------+--------------------------------------------------------
16 | TIMER0 | CFG_NIOS_CPU_TIMER0_IRQ = 16
17 | UART0 | CFG_NIOS_CPU_UART0_IRQ = 17
18 | UART1 | CFG_NIOS_CPU_UART1_IRQ = 18
20 | LAN91C111 | CFG_NIOS_CPU_LAN0_IRQ = 20
25 | IDE0 | CFG_NIOS_CPU_IDE0_IRQ = 25
MEMORY: 8 MByte Flash
16 MByte SDRAM
Timer: TIMER0: high priority programmable timer (IRQ16)
U-Boot CFG: CFG_NIOS_CPU_TICK_TIMER = 0
CFG_NIOS_CPU_USER_TIMER = (not present)
PIO: Nr. | description
------+--------------------------------------------------------
PIO0 | CFPOWER: 1 output to controll CF power supply
PIO1 | BUTTON: 4 inputs for user push buttons (no IRQ)
------+--------------------------------------------------------
not | LCD: 11 in/outputs for ASCII LCD
pres.| LED: 8 outputs for user LEDs
| SEVENSEG: 16 outputs for user seven segment display
| RECONF: 1 in/output for . . . . . . . . . . . .
| CFPRESENT: 1 input for CF present event (IRQ35)
| CFATASEL: 1 output to controll CF ATA card select
U-Boot CFG: CFG_NIOS_CPU_BUTTON_PIO = 1
CFG_NIOS_CPU_LCD_PIO = (not present)
CFG_NIOS_CPU_LED_PIO = (not present)
CFG_NIOS_CPU_SEVENSEG_PIO = (not present)
CFG_NIOS_CPU_RECONF_PIO = (not present)
CFG_NIOS_CPU_CFPRESENT_PIO = (not present)
CFG_NIOS_CPU_CFPOWER_PIO = 0
CFG_NIOS_CPU_CFATASEL_PIO = (not present)
UART: UART0: fixed baudrate of 115200, fixed protocol 8N2,
without handshake RTS/CTS (IRQ17)
UART1: fixed baudrate of 115200, fixed protocol 8N1,
without handshake RTS/CTS (IRQ18)
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 - - - - - - - - - - - - - - - - - - -
0x02000000 ---32-----------16|15------------0- CFG_NIOS_CPU_STACK
0x02000000 --+32-----------16|15------------0+
| . | \ \
| . | | |
| . | | > stack area
| . | | |
| . | | V
| . | |
| . | |
SDRAM | . | > CFG_NIOS_CPU_SDRAM_SIZE
| . | | = 0x01000000
| . | |
0x01000100 |- - - - - - - - - - - - - - - -+-|-
| . | | \
| . | | |
| . | | > CFG_NIOS_CPU_VEC_SIZE
| . | | | = 0x00000100
| | / /
0x01000000 |- - - - - - - - - - - - - - - -+- - CFG_NIOS_CPU_VEC_BASE
0x01000000 ---32-----------16|15------------0- CFG_NIOS_CPU_SDRAM_BASE
| sector 127 | \
+ 0x7f0000 |- - - - - - - - - - - - - - - -| |
| : | |
Flash |- - - - : - - - -| > CFG_NIOS_CPU_FLASH_SIZE
| sector 1 : | | = 0x00800000
+ 0x010000 |- - - - - - - - - - - - - - - -| |
| sector 0 (size = 0x10000) | /
0x00800000 ---8-------------4|3-------------0- CFG_NIOS_CPU_FLASH_BASE
| |
: gap :
: :
- - - - - - - - - - - external i/o - - - - - - - - - - - - - - - - - - -
: :
: gap :
| |
0x00020000 ---32-----------16|15------------0-
| gap | \
0x00010310 --+-------------------------------| |
| | |
| register bank (size = 0x10) | |
| +--------.---.---.--- | |
| | bank 0 \ 1 \ 2 \ 3 \ | |
| |---------------------------+ | |
LAN91C111 | | BANK | RESERVED | | |
| |- - - - - - -|- - - - - - -| | > na_enet_size
| | RPCR | MIR | | | = 0x00010000
| |- - - - - - -|- - - - - - -| | |
| | COUNTER | RCR | | |
| |- - - - - - -|- - - - - - -| | |
| | EPH STATUS | TCR | | |
| +---------------------------+ | |
0x00010300 --+--LAN91C111_REGISTERS_OFFSET---| |
| gap | /
0x00010000 ---32-----------16|15------------0- CFG_NIOS_CPU_LAN0_BASE
| |
: gap :
: :
- - - - - - - - - - - on chip i/o - - - - - - - - - - - - - - - - - - -
: :
: gap :
| |
0x00000980 ---32-----------16|15------------0-
| | | \
: (real size : : |
IDE i/f : and content : : > 0x00000080
[5] : unknown) : : |
| | | /
0x00000900 ---32-----------16|15------------0- CFG_NIOS_CPU_IDE0
| | \
: gap : > (space for PIO4..7)
| | /
0x000008c0 ---32-----------16|15------------0-
| (unused) | \
+ 0x1c |- - - - - - - - - - - - - - - -| |
| (unused) | |
+ 0x18 |- - - - - - - - - - - - - - - -| |
| (unused) | |
+ 0x14 |- - - - - - - - - - - - - - - -| |
UART1 | (unused) | > 0x00000020
[2] + 0x10 |- - - - - - - - - - - - - - - -| |
| control (10 bit) (rw) | |
+ 0x0c |- - - - - - - - - - - - - - - -| |
| status (10 bit) (rw) | |
+ 0x08 |- - - - - - - - - - - - - - - -| |
| txdata (8 bit) (wo) | |
+ 0x04 |- - - - - - - - - - - - - - - -| |
| rxdata (8 bit) (ro) | /
0x000008a0 ---32-----------16|15------------0- CFG_NIOS_CPU_UART1
| | \
: gap : > (space for PIO2..3)
| | /
0x00000880 ---32-----------16|15------------0-
| edgecapture (4 bit) (rw) | \
+ 0x0c |- - - - - - - - - - - - - - - -| |
PIO1 | interruptmask (4 bit) (rw) | |
[4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
| (unused) | |
+ 0x04 |- - - - - - - - - - - - - - - -| |
| data (4 bit) (ro) | /
0x00000870 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO1
| (unused) | \
+ 0x0c |- - - - - - - - - - - - - - - -| |
PIO0 | (unused) | |
[4] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
| (unused) | |
+ 0x04 |- - - - - - - - - - - - - - - -| |
| data (1 bit) (wo) | /
0x00000860 ---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) | /
0x00000840 ---32-----------16|15------------0- CFG_NIOS_CPU_TIMER0
| | \
: gap : > (space for UART2)
| | /
0x00000820 ---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) | /
0x00000800 ---32-----------16|15------------0- CFG_NIOS_CPU_UART0
- - - - - - - - - - - on chip memory 1 - - - - - - - - - - -
0x00000800 ---32-----------16|15------------0-
| : | \
| : | |
GERMS | : | > CFG_NIOS_CPU_ROM_SIZE
| : | | = 0x00000800
| : | /
0x00000000 |- - - - - - - - - - - - - - - -+- - CFG_NIOS_CPU_RST_VECT
0x00000000 ---32-----------16|15------------0- CFG_NIOS_CPU_ROM_BASE
===============================================================================
F L A S H M E M O R Y A L L O C A T I O N
===============================================================================
0x01000000 ---8-------------4|3-------------0-
| : | \
SAFE | : | > 1 MByte
FPGA conf. | : | / (NOT usable by software)
0x00f00000 --+- - - - - - - -:- - - - - - - -+-
| : | \
USER | : | > 1 MByte
FPGA conf. | : | / (NOT usable by software)
0x00e00000 --+- - - - - - - -:- - - - - - - -+-
| : | \
| : | |
WEB pages | : | > 2 MByte
| : | | (provisory usable)
| : | /
0x00c00000 --+- - - - - - - -:- - - - - - - -+-
| : | \
| : | |
| : | |
| : | > 4 MByte free for use
| : | |
0x00840000 --+- - - - - - - -:- - - - - - - -+-|- u-boot environment
| : | /
0x00800000 |- - - - - - - -:- - - - - - - -+- - u-boot _start()
0x00800000 ---8-------------4|3-------------0-
===============================================================================
R E F E R E N C E S
===============================================================================
[1] http://www.altera.com/literature/manual/mnl_nios_board_stratix_1s10.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.opencores.org/projects/ata/
http://www.t13.org/index.html
===============================================================================
Stephan Linz <linz@li-pro.net>
|
