| |
| 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> |
