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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>
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-27 23:13:11 +0000