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