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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: "DNP_ESC1"
- 32 bit NIOS for 50 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 = 50000000
- 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 =
- | PIO6 | CFG_NIOS_CPU_PIO6_IRQ = 20
- 25 | SPI0 | CFG_NIOS_CPU_SPI0_IRQ = 25
- 31 | PIO7 | CFG_NIOS_CPU_PIO7_IRQ = 31
- 32 | PIO8 | CFG_NIOS_CPU_PIO8_IRQ = 32
- 33 | PIO9 | CFG_NIOS_CPU_PIO9_IRQ = 33
- 34 | PIO10 | CFG_NIOS_CPU_PIO10_IRQ = 34
- 35 | PIO11 | CFG_NIOS_CPU_PIO11_IRQ = 35
- 36 | PIO12 | CFG_NIOS_CPU_PIO12_IRQ =
- | IDE0 | CFG_NIOS_CPU_IDE0_IRQ = 36
- 37 | PIO13 | CFG_NIOS_CPU_PIO13_IRQ =
- | IDE1 | CFG_NIOS_CPU_IDE1_IRQ = 37
- 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 | PORTA: 8 in/outputs for general purpose usage
- PIO1 | PORTB: 8 in/outputs for general purpose usage
- PIO2 | PORTC: 4 in/outputs for general purpose usage
- PIO3 | RCM: 1 input for RCM_EN# jumper (Req.Conf.Mon.)
- PIO4 | WDTENA: 1 output to enable the on-board watchdog
- PIO5 | WDTTRIG: 1 output to trigger the on-board watchdog
- PIO6 | LAN0INT: 1 input for LAN91C111 irq input (IRQ20)
- PIO7 | INT1: 1 input for general purpose irq (IRQ31)
- PIO8 | INT2: 1 input for general purpose irq (IRQ32)
- PIO9 | INT3: 1 input for general purpose irq (IRQ33)
- PIO10| INT4: 1 input for general purpose irq (IRQ34)
- PIO11| INT5: 1 input for general purpose irq (IRQ35)
- PIO12| INT6: 1 input for general purpose irq (IRQ36)
- | IDE0INT: (same) for IDE0 irq input
- PIO13| INT7: 1 input for general purpose irq (IRQ37)
- | IDE1INT: (same) for IDE1 irq input
- U-Boot CFG: CFG_NIOS_CPU_PORTA_PIO = 0
- CFG_NIOS_CPU_PORTB_PIO = 1
- CFG_NIOS_CPU_PORTC_PIO = 2
- CFG_NIOS_CPU_RCM_PIO = 3
- CFG_NIOS_CPU_WDTENA_PIO = 4
- CFG_NIOS_CPU_WDTTRIG_PIO = 5
- CFG_NIOS_CPU_LED_PIO = (not present)
- UART: UART0: fixed baudrate of 115200, fixed protocol 8N1, RTS/CTS (IRQ17)
- UART1: fixed baudrate of 115200, fixed protocol 8N1,
- without handshake RTS/CTS (IRQ18)
- SPI: SPI0: master capable, 1 slave selectable, 250kHz target clock,
- 2 usec targets delay between slave select and clock,
- data is transferred MSB-first / LSB-last (IRQ25)
- LAN: SMsC LAN91C111 with:
- - without offset
- - data bus width 16 bit (on-board hard wired at 32 bit bus)
- - !!! 32 bit bus access --> each address * 2 !!!
- IDE: (TODO)
- ===============================================================================
- M E M O R Y M A P
- ===============================================================================
- - - - - - - - - - - - external extension - - - - - - - - - - - - - - - - - - -
- 0x44000000 ---32-----------16|15------------0-
- | | | \
- : (real size : : |
- EXT3 (CS4) : and content : : > CFG_NIOS_CPU_CS3_SIZE
- : unknown) : : | = 0x01000000
- | | | /
- 0x43000000 ---32-----------16|15------------0- CFG_NIOS_CPU_CS3_BASE
- | | | \
- : (real size : : |
- EXT2 (CS3) : and content : : > CFG_NIOS_CPU_CS2_SIZE
- : unknown) : : | = 0x01000000
- | | | /
- 0x42000000 ---32-----------16|15------------0- CFG_NIOS_CPU_CS2_BASE
- | | | \
- : (real size : : |
- EXT1 (CS2) : and content : : > CFG_NIOS_CPU_CS1_SIZE
- : unknown) : : | = 0x01000000
- | | | /
- 0x41000000 ---32-----------16|15------------0- CFG_NIOS_CPU_CS1_BASE
- | | | \
- : (real size : : |
- EXT0 (CS1) : and content : : > CFG_NIOS_CPU_CS0_SIZE
- : unknown) : : | = 0x01000000
- | | | /
- 0x40000000 ---32-----------16|15------------0- CFG_NIOS_CPU_CS0_BASE
- | |
- : gap :
- : :
- - - - - - - - - - - - external memory - - - - - - - - - - - - - - - - - - -
- : :
- : gap :
- | |
- 0x03000000 ---32-----------16|15------------0- CFG_NIOS_CPU_STACK
- | . | \
- | . | | (U-Boot run-time system)
- | . | |
- | . | > CFG_MONITOR_LEN
- | . | | = 0x00040000
- | . | |
- | . | /
- 0x02fc0000 --+32-----------16|15------------0+ TEXT_BASE
- | . | \
- | . | > CFG_MALLOC_LEN (heap)
- | . | /
- --+32-----------16|15------------0+
- | . | \
- | . | > CFG_GBL_DATA_SIZE (global)
- | . | /
- --+32-----------16|15------------0+ CFG_INIT_SP (u-boot stack)
- | . | \ \
- | . | | |
- | . | | > stack area
- | . | | |
- | . | | V
- | . | |
- | . | |
- SDRAM | . | > CFG_NIOS_CPU_SDRAM_SIZE
- | . | | = 0x01000000
- | . | |
- 0x02000100 |- - - - - - - - - - - - - - - -+-|-
- | . | | \
- | . | | |
- | . | | > CFG_NIOS_CPU_VEC_SIZE
- | . | | | = 0x00000100
- | | / /
- 0x02000000 |- - - - - - - - - - - - - - - -+- - CFG_NIOS_CPU_VEC_BASE
- 0x02000000 ---32-----------16|15------------0- CFG_NIOS_CPU_SDRAM_BASE
- | | \
- : gap : > (space for 2nd Flash)
- | | /
- 0x01800000 ---32-----------16|15------------0-
- | sector 127 | \
- + 0x7f0000 |- - - - - - - - - - - - - - - -| |
- | : | |
- Flash |- - - - : - - - -| > CFG_NIOS_CPU_FLASH_SIZE
- | sector 1 : | | = 0x00800000
- + 0x010000 |- - - - - - - - - - - - - - - -| |
- | sector 0 (size = 0x10000) | /
- 0x01000000 ---8-------------4|3-------------0- CFG_NIOS_CPU_FLASH_BASE
- | |
- : gap :
- : :
- - - - - - - - - - - - external i/o - - - - - - - - - - - - - - - - - - -
- : :
- : gap :
- | |
- 0x00010020 ---32-----------16|15------------0-
- | | \
- | register bank | |
- | size = (real_size << 1) | |
- | real_size = 0x10 | |
- | +--------.---.---.--- | |
- | | bank 0 \ 1 \ 2 \ 3 \ | |
- | |---------------------------+ | |
- LAN91C111 | | BANK | RESERVED | | > na_enet_size
- | |- - - - - - -|- - - - - - -| | | = 0x00000020
- | | RPCR | MIR | | |
- | |- - - - - - -|- - - - - - -| | |
- | | COUNTER | RCR | | |
- | |- - - - - - -|- - - - - - -| | |
- | | EPH STATUS | TCR | | |
- | +---------------------------+ | /
- 0x00010000 ---32-----------16|15------------0- CFG_NIOS_CPU_LAN0_BASE
- | |
- : gap :
- : :
- - - - - - - - - - - - on chip i/o - - - - - - - - - - - - - - - - - - -
- : :
- : gap :
- | |
- 0x00001040 ---32-----------16|15------------0-
- | | | \
- : : : |
- IDE1 i/f : : : > 0x00000020
- [5] : : : |
- | | | /
- 0x00001020 ---32-----------16|15------------0- CFG_NIOS_CPU_IDE1
- | | | \
- : : : |
- IDE0 i/f : : : > 0x00000020
- [5] : : : |
- | | | /
- 0x00001000 ---32-----------16|15------------0- CFG_NIOS_CPU_IDE0
- | |
- : gap :
- | |
- 0x00000980 ---32-----------16|15------------0-
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO13 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000970 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO13
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO12 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000960 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO12
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO11 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000950 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO11
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO10 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000940 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO10
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO9 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000930 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO9
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO8 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000920 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO8
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO7 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000910 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO7
- | edgecapture (1 bit) (rw) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO6 | interruptmask (1 bit) (rw) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000900 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO6
- | |
- : gap :
- | |
- 0x000008e0 ---32-----------16|15------------0-
- | (unused) | \
- + 0x1c |- - - - - - - - - - - - - - - -| |
- | endofpacket (16 bit) (rw) | |
- + 0x18 |- - - - - - - - - - - - - - - -| |
- | slaveselect (1 bit) (rw) | |
- + 0x14 |- - - - - - - - - - - - - - - -| |
- SPI0 | (reserved) | |
- [4] + 0x10 |- - - - - - - - - - - - - - - -| > 0x00000020
- | control (11 bit) (rw) | |
- + 0x0c |- - - - - - - - - - - - - - - -| |
- | status (9 bit) (rw) | |
- + 0x08 |- - - - - - - - - - - - - - - -| |
- | txdata (16 bit) (wo) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | rxdata (16 bit) (ro) | /
- 0x000008c0 ---32-----------16|15------------0- CFG_NIOS_CPU_SPI0
- | (unused) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO5 | (unused) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (wo) | /
- 0x000008b0 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO5
- | (unused) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO4 | (unused) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (wo) | /
- 0x000008a0 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO4
- | (unused) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO3 | (unused) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | (unused) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (1 bit) (ro) | /
- 0x00000890 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO3
- | (unused) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO2 | (unused) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | direction (4 bit) (rw) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (4 bit) (rw) | /
- 0x00000880 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO2
- | (unused) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO1 | (unused) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | direction (8 bit) (rw) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (8 bit) (rw) | /
- 0x00000870 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO1
- | (unused) | \
- + 0x0c |- - - - - - - - - - - - - - - -| |
- PIO0 | (unused) | |
- [3] + 0x08 |- - - - - - - - - - - - - - - -| > 0x00000010
- | direction (8 bit) (rw) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | data (8 bit) (rw) | /
- 0x00000860 ---32-----------16|15------------0- CFG_NIOS_CPU_PIO0
- | (unused) | \
- + 0x1c |- - - - - - - - - - - - - - - -| |
- | (unused) | |
- + 0x18 |- - - - - - - - - - - - - - - -| |
- | snaph (16 bit) (rw) | |
- + 0x14 |- - - - - - - - - - - - - - - -| |
- TIMER0 | snapl (16 bit) (rw) | |
- [2] + 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
- | (unused) | \
- + 0x1c |- - - - - - - - - - - - - - - -| |
- | (unused) | |
- + 0x18 |- - - - - - - - - - - - - - - -| |
- | (unused) | |
- + 0x14 |- - - - - - - - - - - - - - - -| |
- UART1 | (unused) | > 0x00000020
- [1] + 0x10 |- - - - - - - - - - - - - - - -| |
- | control (10 bit) (rw) | |
- + 0x0c |- - - - - - - - - - - - - - - -| |
- | status (10 bit) (rw) | |
- + 0x08 |- - - - - - - - - - - - - - - -| |
- | txdata (8 bit) (wo) | |
- + 0x04 |- - - - - - - - - - - - - - - -| |
- | rxdata (8 bit) (ro) | /
- 0x00000820 ---32-----------16|15------------0- CFG_NIOS_CPU_UART1
- | (unused) | \
- + 0x1c |- - - - - - - - - - - - - - - -| |
- | (unused) | |
- + 0x18 |- - - - - - - - - - - - - - - -| |
- | (unused) | |
- + 0x14 |- - - - - - - - - - - - - - - -| |
- UART0 | (unused) | > 0x00000020
- [1] + 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
- ===============================================================================
- 0x01800000 ---8-------------4|3-------------0-
- | : | \
- | : | |
- | : | > 6 MByte ROM FS
- | : | |
- | : | /
- 0x01200000 --+- - - - - - - -:- - - - - - - -+- - file system image(s)
- | : | \
- | : | |
- | : | > 1728 kByte ucLinux
- | : | |
- | : | /
- 0x01050000 --+- - - - - - - -:- - - - - - - -+- - os image(s)
- | : | \
- 0x01040000 --+- - - - - - - -:- - - - - - - -+-|- u-boot environment
- | : | |
- | : | > 320 kByte U-Boot
- | : | |
- | : | |
- | : | /
- 0x01000000 --+- - - - - - - -:- - - - - - - -+- - u-boot _start()
- 0x01000000 ---8-------------4|3-------------0-
- ===============================================================================
- R E F E R E N C E S
- ===============================================================================
- [1] http://www.altera.com/literature/ds/ds_nios_uart.pdf
- [2] http://www.altera.com/literature/ds/ds_nios_timer.pdf
- [3] http://www.altera.com/literature/ds/ds_nios_pio.pdf
- [4] http://www.altera.com/literature/ds/ds_nios_spi.pdf
- [5] http://www.t13.org/index.html
- ===============================================================================
- Stephan Linz <linz@li-pro.net>
|