[people/ms/u-boot.git] / doc / README.adnpesc1_base32


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:	CONFIG_SYS_NIOS_CPU_CLK	     = 50000000
			CONFIG_SYS_NIOS_CPU_ICACHE	     = (not present)
			CONFIG_SYS_NIOS_CPU_DCACHE	     = (not present)
			CONFIG_SYS_NIOS_CPU_REG_NUMS	     = 512
			CONFIG_SYS_NIOS_CPU_MUL	     = 0
			CONFIG_SYS_NIOS_CPU_MSTEP	     = 1
			CONFIG_SYS_NIOS_CPU_DBG_CORE	     = 0

IRQ:	 Nr.  | used by
	------+--------------------------------------------------------
	 16   | TIMER0	  |  CONFIG_SYS_NIOS_CPU_TIMER0_IRQ = 16
	 17   | UART0	  |  CONFIG_SYS_NIOS_CPU_UART0_IRQ  = 17
	 18   | UART1	  |  CONFIG_SYS_NIOS_CPU_UART1_IRQ  = 18
	 20   | LAN91C111 |  CONFIG_SYS_NIOS_CPU_LAN0_IRQ   =
	      | PIO6	  |  CONFIG_SYS_NIOS_CPU_PIO6_IRQ   = 20
	 25   | SPI0	  |  CONFIG_SYS_NIOS_CPU_SPI0_IRQ   = 25
	 31   | PIO7	  |  CONFIG_SYS_NIOS_CPU_PIO7_IRQ   = 31
	 32   | PIO8	  |  CONFIG_SYS_NIOS_CPU_PIO8_IRQ   = 32
	 33   | PIO9	  |  CONFIG_SYS_NIOS_CPU_PIO9_IRQ   = 33
	 34   | PIO10	  |  CONFIG_SYS_NIOS_CPU_PIO10_IRQ  = 34
	 35   | PIO11	  |  CONFIG_SYS_NIOS_CPU_PIO11_IRQ  = 35
	 36   | PIO12	  |  CONFIG_SYS_NIOS_CPU_PIO12_IRQ  =
	      | IDE0	  |  CONFIG_SYS_NIOS_CPU_IDE0_IRQ   = 36
	 37   | PIO13	  |  CONFIG_SYS_NIOS_CPU_PIO13_IRQ  =
	      | IDE1	  |  CONFIG_SYS_NIOS_CPU_IDE1_IRQ   = 37

MEMORY:	 8 MByte Flash
	16 MByte SDRAM

Timer:	TIMER0: high priority programmable timer (IRQ16)

	U-Boot CFG:	CONFIG_SYS_NIOS_CPU_TICK_TIMER	     = 0
			CONFIG_SYS_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:	CONFIG_SYS_NIOS_CPU_PORTA_PIO	     = 0
			CONFIG_SYS_NIOS_CPU_PORTB_PIO	     = 1
			CONFIG_SYS_NIOS_CPU_PORTC_PIO	     = 2
			CONFIG_SYS_NIOS_CPU_RCM_PIO	     = 3
			CONFIG_SYS_NIOS_CPU_WDTENA_PIO	     = 4
			CONFIG_SYS_NIOS_CPU_WDTTRIG_PIO     = 5
			CONFIG_SYS_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 :	       :  > CONFIG_SYS_NIOS_CPU_CS3_SIZE
	       :   unknown)    :	       : |   = 0x01000000
	       |	       |	       | /
  0x43000000 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_CS3_BASE
	       |	       |	       | \
	       :  (real size   :	       : |
  EXT2 (CS3)   :   and content :	       :  > CONFIG_SYS_NIOS_CPU_CS2_SIZE
	       :   unknown)    :	       : |   = 0x01000000
	       |	       |	       | /
  0x42000000 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_CS2_BASE
	       |	       |	       | \
	       :  (real size   :	       : |
  EXT1 (CS2)   :   and content :	       :  > CONFIG_SYS_NIOS_CPU_CS1_SIZE
	       :   unknown)    :	       : |   = 0x01000000
	       |	       |	       | /
  0x41000000 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_CS1_BASE
	       |	       |	       | \
	       :  (real size   :	       : |
  EXT0 (CS1)   :   and content :	       :  > CONFIG_SYS_NIOS_CPU_CS0_SIZE
	       :   unknown)    :	       : |   = 0x01000000
	       |	       |	       | /
  0x40000000 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_CS0_BASE
	       |			       |
	       :	      gap	       :
	       :			       :

- - - - - - - - - - -   external memory   - - - - - - - - - - - - - - - - - - -

	       :			       :
	       :	      gap	       :
	       |			       |
  0x03000000 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_STACK
	       |	       .	       | \
	       |	       .	       | |  (U-Boot run-time system)
	       |	       .	       | |
	       |	       .	       |  > CONFIG_SYS_MONITOR_LEN
	       |	       .	       | |   = 0x00040000
	       |	       .	       | |
	       |	       .	       | /
  0x02fc0000 --+32-----------16|15------------0+    TEXT_BASE
	       |	       .	       | \
	       |	       .	       |  > CONFIG_SYS_MALLOC_LEN (heap)
	       |	       .	       | /
	     --+32-----------16|15------------0+
	       |	       .	       | \
	       |	       .	       |  > CONFIG_SYS_GBL_DATA_SIZE (global)
	       |	       .	       | /
	     --+32-----------16|15------------0+    CONFIG_SYS_INIT_SP (u-boot stack)
	       |	       .	       | \ \
	       |	       .	       | | |
	       |	       .	       | |  > stack area
	       |	       .	       | | |
	       |	       .	       | | V
	       |	       .	       | |
	       |	       .	       | |
  SDRAM	       |	       .	       |  > CONFIG_SYS_NIOS_CPU_SDRAM_SIZE
	       |	       .	       | |   = 0x01000000
	       |	       .	       | |
  0x02000100   |- - - - - - - - - - - - - - - -+-|-
	       |	       .	       | | \
	       |	       .	       | | |
	       |	       .	       | |  > CONFIG_SYS_NIOS_CPU_VEC_SIZE
	       |	       .	       | | |   = 0x00000100
	       |			       | / /
  0x02000000   |- - - - - - - - - - - - - - - -+- - CONFIG_SYS_NIOS_CPU_VEC_BASE
  0x02000000 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_SDRAM_BASE
	       |			       | \
	       :	      gap	       :  > (space for 2nd Flash)
	       |			       | /
  0x01800000 ---32-----------16|15------------0-
	       |  sector 127		       | \
    + 0x7f0000 |- - - - - - - - - - - - - - - -| |
	       |	       :	       | |
  Flash	       |-   -	-   -  :  -   -	  -   -|  > CONFIG_SYS_NIOS_CPU_FLASH_SIZE
	       |  sector 1     :	       | |   = 0x00800000
    + 0x010000 |- - - - - - - - - - - - - - - -| |
	       |  sector 0 (size = 0x10000)    | /
  0x01000000 ---8-------------4|3-------------0-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_NIOS_CPU_IDE1
	       |	       |	       | \
	       :	       :	       : |
  IDE0 i/f     :	       :	       :  > 0x00000020
  [5]	       :	       :	       : |
	       |	       |	       | /
  0x00001000 ---32-----------16|15------------0-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_NIOS_CPU_SPI0
	       |		     (unused)  | \
	+ 0x0c |- - - - - - - - - - - - - - - -| |
  PIO5	       |		     (unused)  | |
  [3]	+ 0x08 |- - - - - - - - - - - - - - - -|  > 0x00000010
	       |		     (unused)  | |
	+ 0x04 |- - - - - - - - - - - - - - - -| |
	       |  data (1 bit)		 (wo)  | /
  0x000008b0 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_PIO5
	       |		     (unused)  | \
	+ 0x0c |- - - - - - - - - - - - - - - -| |
  PIO4	       |		     (unused)  | |
  [3]	+ 0x08 |- - - - - - - - - - - - - - - -|  > 0x00000010
	       |		     (unused)  | |
	+ 0x04 |- - - - - - - - - - - - - - - -| |
	       |  data (1 bit)		 (wo)  | /
  0x000008a0 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_PIO4
	       |		     (unused)  | \
	+ 0x0c |- - - - - - - - - - - - - - - -| |
  PIO3	       |		     (unused)  | |
  [3]	+ 0x08 |- - - - - - - - - - - - - - - -|  > 0x00000010
	       |		     (unused)  | |
	+ 0x04 |- - - - - - - - - - - - - - - -| |
	       |  data (1 bit)		 (ro)  | /
  0x00000890 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_PIO3
	       |		     (unused)  | \
	+ 0x0c |- - - - - - - - - - - - - - - -| |
  PIO2	       |		     (unused)  | |
  [3]	+ 0x08 |- - - - - - - - - - - - - - - -|  > 0x00000010
	       |  direction (4 bit)      (rw)  | |
	+ 0x04 |- - - - - - - - - - - - - - - -| |
	       |  data (4 bit)		 (rw)  | /
  0x00000880 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_PIO2
	       |		     (unused)  | \
	+ 0x0c |- - - - - - - - - - - - - - - -| |
  PIO1	       |		     (unused)  | |
  [3]	+ 0x08 |- - - - - - - - - - - - - - - -|  > 0x00000010
	       |  direction (8 bit)      (rw)  | |
	+ 0x04 |- - - - - - - - - - - - - - - -| |
	       |  data (8 bit)		 (rw)  | /
  0x00000870 ---32-----------16|15------------0-    CONFIG_SYS_NIOS_CPU_PIO1
	       |		     (unused)  | \
	+ 0x0c |- - - - - - - - - - - - - - - -| |
  PIO0	       |		     (unused)  | |
  [3]	+ 0x08 |- - - - - - - - - - - - - - - -|  > 0x00000010
	       |  direction (8 bit)      (rw)  | |
	+ 0x04 |- - - - - - - - - - - - - - - -| |
	       |  data (8 bit)		 (rw)  | /
  0x00000860 ---32-----------16|15------------0-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_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-    CONFIG_SYS_NIOS_CPU_UART0

- - - - - - - - - - -  on chip memory 1	  - - - - - - - - - - -

  0x00000800 ---32-----------16|15------------0-
	       |	       :	       | \
	       |	       :	       | |
  GERMS	       |	       :	       |  > CONFIG_SYS_NIOS_CPU_ROM_SIZE
	       |	       :	       | |   = 0x00000800
	       |	       :	       | /
  0x00000000   |- - - - - - - - - - - - - - - -+- - CONFIG_SYS_NIOS_CPU_RST_VECT
  0x00000000 ---32-----------16|15------------0-    CONFIG_SYS_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>
Commit	Line	Data
aaf224ab WD	1
	2	TODO: specify IDE i/f
	3
	4
	5	===============================================================================
	6	C P U , M E M O R Y , I N / O U T C O M P O N E N T S
	7	===============================================================================
	8	see also [1]-[5]
	9
	10	CPU: "DNP_ESC1"
	11	32 bit NIOS for 50 MHz
	12	512 Byte for register file (30 levels)
	13	with out instruction cache
	14	with out data cache
	15	2 KByte On Chip ROM with GERMS boot monitor
	16	with out On Chip RAM
	17	MSTEP multiplier
	18	no Debug Core
	19	no On Chip Instrumentation (OCI)
	20
6d0f6bcf JCPV	21	U-Boot CFG: CONFIG_SYS_NIOS_CPU_CLK = 50000000
	22	CONFIG_SYS_NIOS_CPU_ICACHE = (not present)
	23	CONFIG_SYS_NIOS_CPU_DCACHE = (not present)
	24	CONFIG_SYS_NIOS_CPU_REG_NUMS = 512
	25	CONFIG_SYS_NIOS_CPU_MUL = 0
	26	CONFIG_SYS_NIOS_CPU_MSTEP = 1
	27	CONFIG_SYS_NIOS_CPU_DBG_CORE = 0
aaf224ab WD	28
	29	IRQ: Nr. \| used by
	30	------+--------------------------------------------------------
6d0f6bcf JCPV	31	16 \| TIMER0 \| CONFIG_SYS_NIOS_CPU_TIMER0_IRQ = 16
	32	17 \| UART0 \| CONFIG_SYS_NIOS_CPU_UART0_IRQ = 17
	33	18 \| UART1 \| CONFIG_SYS_NIOS_CPU_UART1_IRQ = 18
	34	20 \| LAN91C111 \| CONFIG_SYS_NIOS_CPU_LAN0_IRQ =
	35	\| PIO6 \| CONFIG_SYS_NIOS_CPU_PIO6_IRQ = 20
	36	25 \| SPI0 \| CONFIG_SYS_NIOS_CPU_SPI0_IRQ = 25
	37	31 \| PIO7 \| CONFIG_SYS_NIOS_CPU_PIO7_IRQ = 31
	38	32 \| PIO8 \| CONFIG_SYS_NIOS_CPU_PIO8_IRQ = 32
	39	33 \| PIO9 \| CONFIG_SYS_NIOS_CPU_PIO9_IRQ = 33
	40	34 \| PIO10 \| CONFIG_SYS_NIOS_CPU_PIO10_IRQ = 34
	41	35 \| PIO11 \| CONFIG_SYS_NIOS_CPU_PIO11_IRQ = 35
	42	36 \| PIO12 \| CONFIG_SYS_NIOS_CPU_PIO12_IRQ =
	43	\| IDE0 \| CONFIG_SYS_NIOS_CPU_IDE0_IRQ = 36
	44	37 \| PIO13 \| CONFIG_SYS_NIOS_CPU_PIO13_IRQ =
	45	\| IDE1 \| CONFIG_SYS_NIOS_CPU_IDE1_IRQ = 37
aaf224ab WD	46
	47	MEMORY: 8 MByte Flash
	48	16 MByte SDRAM
	49
	50	Timer: TIMER0: high priority programmable timer (IRQ16)
	51
6d0f6bcf JCPV	52	U-Boot CFG: CONFIG_SYS_NIOS_CPU_TICK_TIMER = 0
6d0f6bcf JCPV	53	CONFIG_SYS_NIOS_CPU_USER_TIMER = (not present)
aaf224ab WD	54
	55	PIO: Nr. \| description
	56	------+--------------------------------------------------------
	57	PIO0 \| PORTA: 8 in/outputs for general purpose usage
	58	PIO1 \| PORTB: 8 in/outputs for general purpose usage
	59	PIO2 \| PORTC: 4 in/outputs for general purpose usage
	60	PIO3 \| RCM: 1 input for RCM_EN# jumper (Req.Conf.Mon.)
	61	PIO4 \| WDTENA: 1 output to enable the on-board watchdog
	62	PIO5 \| WDTTRIG: 1 output to trigger the on-board watchdog
	63	PIO6 \| LAN0INT: 1 input for LAN91C111 irq input (IRQ20)
	64	PIO7 \| INT1: 1 input for general purpose irq (IRQ31)
	65	PIO8 \| INT2: 1 input for general purpose irq (IRQ32)
	66	PIO9 \| INT3: 1 input for general purpose irq (IRQ33)
	67	PIO10\| INT4: 1 input for general purpose irq (IRQ34)
	68	PIO11\| INT5: 1 input for general purpose irq (IRQ35)
	69	PIO12\| INT6: 1 input for general purpose irq (IRQ36)
	70	\| IDE0INT: (same) for IDE0 irq input
	71	PIO13\| INT7: 1 input for general purpose irq (IRQ37)
	72	\| IDE1INT: (same) for IDE1 irq input
	73
6d0f6bcf JCPV	74	U-Boot CFG: CONFIG_SYS_NIOS_CPU_PORTA_PIO = 0
	75	CONFIG_SYS_NIOS_CPU_PORTB_PIO = 1
	76	CONFIG_SYS_NIOS_CPU_PORTC_PIO = 2
	77	CONFIG_SYS_NIOS_CPU_RCM_PIO = 3
	78	CONFIG_SYS_NIOS_CPU_WDTENA_PIO = 4
	79	CONFIG_SYS_NIOS_CPU_WDTTRIG_PIO = 5
	80	CONFIG_SYS_NIOS_CPU_LED_PIO = (not present)
aaf224ab WD	81
	82	UART: UART0: fixed baudrate of 115200, fixed protocol 8N1, RTS/CTS (IRQ17)
	83	UART1: fixed baudrate of 115200, fixed protocol 8N1,
	84	without handshake RTS/CTS (IRQ18)
	85
	86	SPI: SPI0: master capable, 1 slave selectable, 250kHz target clock,
	87	2 usec targets delay between slave select and clock,
	88	data is transferred MSB-first / LSB-last (IRQ25)
	89
	90	LAN: SMsC LAN91C111 with:
	91	- without offset
	92	- data bus width 16 bit (on-board hard wired at 32 bit bus)
	93	- !!! 32 bit bus access --> each address * 2 !!!
	94
	95	IDE: (TODO)
	96
	97
	98	===============================================================================
	99	M E M O R Y M A P
	100	===============================================================================
	101
	102	- - - - - - - - - - - external extension - - - - - - - - - - - - - - - - - - -
	103
	104	0x44000000 ---32-----------16\|15------------0-
	105	\| \| \| \
	106	: (real size : : \|
6d0f6bcf	107	EXT3 (CS4) : and content : : > CONFIG_SYS_NIOS_CPU_CS3_SIZE
aaf224ab WD	108	: unknown) : : \| = 0x01000000
aaf224ab WD	109	\| \| \| /
6d0f6bcf	110	0x43000000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_CS3_BASE
aaf224ab WD	111	\| \| \| \
aaf224ab WD	112	: (real size : : \|
6d0f6bcf	113	EXT2 (CS3) : and content : : > CONFIG_SYS_NIOS_CPU_CS2_SIZE
aaf224ab WD	114	: unknown) : : \| = 0x01000000
aaf224ab WD	115	\| \| \| /
6d0f6bcf	116	0x42000000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_CS2_BASE
aaf224ab WD	117	\| \| \| \
aaf224ab WD	118	: (real size : : \|
6d0f6bcf	119	EXT1 (CS2) : and content : : > CONFIG_SYS_NIOS_CPU_CS1_SIZE
aaf224ab WD	120	: unknown) : : \| = 0x01000000
aaf224ab WD	121	\| \| \| /
6d0f6bcf	122	0x41000000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_CS1_BASE
aaf224ab WD	123	\| \| \| \
aaf224ab WD	124	: (real size : : \|
6d0f6bcf	125	EXT0 (CS1) : and content : : > CONFIG_SYS_NIOS_CPU_CS0_SIZE
aaf224ab WD	126	: unknown) : : \| = 0x01000000
aaf224ab WD	127	\| \| \| /
6d0f6bcf	128	0x40000000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_CS0_BASE
aaf224ab WD	129	\| \|
	130	: gap :
	131	: :
	132
	133	- - - - - - - - - - - external memory - - - - - - - - - - - - - - - - - - -
	134
	135	: :
	136	: gap :
	137	\| \|
6d0f6bcf	138	0x03000000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_STACK
aaf224ab WD	139	\| . \| \
	140	\| . \| \| (U-Boot run-time system)
	141	\| . \| \|
6d0f6bcf	142	\| . \| > CONFIG_SYS_MONITOR_LEN
aaf224ab WD	143	\| . \| \| = 0x00040000
	144	\| . \| \|
	145	\| . \| /
	146	0x02fc0000 --+32-----------16\|15------------0+ TEXT_BASE
	147	\| . \| \
6d0f6bcf	148	\| . \| > CONFIG_SYS_MALLOC_LEN (heap)
aaf224ab WD	149	\| . \| /
	150	--+32-----------16\|15------------0+
	151	\| . \| \
6d0f6bcf	152	\| . \| > CONFIG_SYS_GBL_DATA_SIZE (global)
aaf224ab	153	\| . \| /
6d0f6bcf	154	--+32-----------16\|15------------0+ CONFIG_SYS_INIT_SP (u-boot stack)
aaf224ab WD	155	\| . \| \ \
	156	\| . \| \| \|
	157	\| . \| \| > stack area
	158	\| . \| \| \|
	159	\| . \| \| V
	160	\| . \| \|
	161	\| . \| \|
6d0f6bcf	162	SDRAM \| . \| > CONFIG_SYS_NIOS_CPU_SDRAM_SIZE
aaf224ab WD	163	\| . \| \| = 0x01000000
	164	\| . \| \|
	165	0x02000100 \|- - - - - - - - - - - - - - - -+-\|-
	166	\| . \| \| \
	167	\| . \| \| \|
6d0f6bcf	168	\| . \| \| > CONFIG_SYS_NIOS_CPU_VEC_SIZE
aaf224ab WD	169	\| . \| \| \| = 0x00000100
aaf224ab WD	170	\| \| / /
6d0f6bcf JCPV	171	0x02000000 \|- - - - - - - - - - - - - - - -+- - CONFIG_SYS_NIOS_CPU_VEC_BASE
6d0f6bcf JCPV	172	0x02000000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_SDRAM_BASE
aaf224ab WD	173	\| \| \
	174	: gap : > (space for 2nd Flash)
	175	\| \| /
	176	0x01800000 ---32-----------16\|15------------0-
	177	\| sector 127 \| \
	178	+ 0x7f0000 \|- - - - - - - - - - - - - - - -\| \|
	179	\| : \| \|
6d0f6bcf	180	Flash \|- - - - : - - - -\| > CONFIG_SYS_NIOS_CPU_FLASH_SIZE
aaf224ab WD	181	\| sector 1 : \| \| = 0x00800000
	182	+ 0x010000 \|- - - - - - - - - - - - - - - -\| \|
	183	\| sector 0 (size = 0x10000) \| /
6d0f6bcf	184	0x01000000 ---8-------------4\|3-------------0- CONFIG_SYS_NIOS_CPU_FLASH_BASE
aaf224ab WD	185	\| \|
	186	: gap :
	187	: :
	188
	189	- - - - - - - - - - - external i/o - - - - - - - - - - - - - - - - - - -
	190
	191	: :
	192	: gap :
	193	\| \|
	194	0x00010020 ---32-----------16\|15------------0-
53677ef1	195	\| \| \
aaf224ab WD	196	\| register bank \| \|
	197	\| size = (real_size << 1) \| \|
	198	\| real_size = 0x10 \| \|
	199	\| +--------.---.---.--- \| \|
	200	\| \| bank 0 \ 1 \ 2 \ 3 \ \| \|
	201	\| \|---------------------------+ \| \|
	202	LAN91C111 \| \| BANK \| RESERVED \| \| > na_enet_size
	203	\| \|- - - - - - -\|- - - - - - -\| \| \| = 0x00000020
	204	\| \| RPCR \| MIR \| \| \|
	205	\| \|- - - - - - -\|- - - - - - -\| \| \|
	206	\| \| COUNTER \| RCR \| \| \|
	207	\| \|- - - - - - -\|- - - - - - -\| \| \|
	208	\| \| EPH STATUS \| TCR \| \| \|
	209	\| +---------------------------+ \| /
6d0f6bcf	210	0x00010000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_LAN0_BASE
aaf224ab WD	211	\| \|
	212	: gap :
	213	: :
	214
	215	- - - - - - - - - - - on chip i/o - - - - - - - - - - - - - - - - - - -
	216
	217	: :
	218	: gap :
	219	\| \|
	220	0x00001040 ---32-----------16\|15------------0-
	221	\| \| \| \
	222	: : : \|
	223	IDE1 i/f : : : > 0x00000020
	224	[5] : : : \|
	225	\| \| \| /
6d0f6bcf	226	0x00001020 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_IDE1
aaf224ab WD	227	\| \| \| \
	228	: : : \|
	229	IDE0 i/f : : : > 0x00000020
	230	[5] : : : \|
	231	\| \| \| /
6d0f6bcf	232	0x00001000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_IDE0
aaf224ab WD	233	\| \|
	234	: gap :
	235	\| \|
	236	0x00000980 ---32-----------16\|15------------0-
	237	\| edgecapture (1 bit) (rw) \| \
	238	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	239	PIO13 \| interruptmask (1 bit) (rw) \| \|
	240	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	241	\| (unused) \| \|
	242	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	243	\| data (1 bit) (ro) \| /
6d0f6bcf	244	0x00000970 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO13
aaf224ab WD	245	\| edgecapture (1 bit) (rw) \| \
	246	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	247	PIO12 \| interruptmask (1 bit) (rw) \| \|
	248	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	249	\| (unused) \| \|
	250	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	251	\| data (1 bit) (ro) \| /
6d0f6bcf	252	0x00000960 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO12
aaf224ab WD	253	\| edgecapture (1 bit) (rw) \| \
	254	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	255	PIO11 \| interruptmask (1 bit) (rw) \| \|
	256	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	257	\| (unused) \| \|
	258	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	259	\| data (1 bit) (ro) \| /
6d0f6bcf	260	0x00000950 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO11
aaf224ab WD	261	\| edgecapture (1 bit) (rw) \| \
	262	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	263	PIO10 \| interruptmask (1 bit) (rw) \| \|
	264	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	265	\| (unused) \| \|
	266	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	267	\| data (1 bit) (ro) \| /
6d0f6bcf	268	0x00000940 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO10
aaf224ab WD	269	\| edgecapture (1 bit) (rw) \| \
	270	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	271	PIO9 \| interruptmask (1 bit) (rw) \| \|
	272	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	273	\| (unused) \| \|
	274	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	275	\| data (1 bit) (ro) \| /
6d0f6bcf	276	0x00000930 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO9
aaf224ab WD	277	\| edgecapture (1 bit) (rw) \| \
	278	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	279	PIO8 \| interruptmask (1 bit) (rw) \| \|
	280	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	281	\| (unused) \| \|
	282	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	283	\| data (1 bit) (ro) \| /
6d0f6bcf	284	0x00000920 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO8
aaf224ab WD	285	\| edgecapture (1 bit) (rw) \| \
	286	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	287	PIO7 \| interruptmask (1 bit) (rw) \| \|
	288	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	289	\| (unused) \| \|
	290	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	291	\| data (1 bit) (ro) \| /
6d0f6bcf	292	0x00000910 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO7
aaf224ab WD	293	\| edgecapture (1 bit) (rw) \| \
	294	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	295	PIO6 \| interruptmask (1 bit) (rw) \| \|
	296	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	297	\| (unused) \| \|
	298	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	299	\| data (1 bit) (ro) \| /
6d0f6bcf	300	0x00000900 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO6
aaf224ab WD	301	\| \|
	302	: gap :
	303	\| \|
	304	0x000008e0 ---32-----------16\|15------------0-
	305	\| (unused) \| \
	306	+ 0x1c \|- - - - - - - - - - - - - - - -\| \|
	307	\| endofpacket (16 bit) (rw) \| \|
	308	+ 0x18 \|- - - - - - - - - - - - - - - -\| \|
	309	\| slaveselect (1 bit) (rw) \| \|
	310	+ 0x14 \|- - - - - - - - - - - - - - - -\| \|
53677ef1	311	SPI0 \| (reserved) \| \|
aaf224ab WD	312	[4] + 0x10 \|- - - - - - - - - - - - - - - -\| > 0x00000020
	313	\| control (11 bit) (rw) \| \|
	314	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	315	\| status (9 bit) (rw) \| \|
	316	+ 0x08 \|- - - - - - - - - - - - - - - -\| \|
	317	\| txdata (16 bit) (wo) \| \|
	318	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	319	\| rxdata (16 bit) (ro) \| /
6d0f6bcf	320	0x000008c0 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_SPI0
aaf224ab WD	321	\| (unused) \| \
	322	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	323	PIO5 \| (unused) \| \|
	324	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	325	\| (unused) \| \|
	326	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	327	\| data (1 bit) (wo) \| /
6d0f6bcf	328	0x000008b0 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO5
aaf224ab WD	329	\| (unused) \| \
	330	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	331	PIO4 \| (unused) \| \|
	332	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	333	\| (unused) \| \|
	334	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	335	\| data (1 bit) (wo) \| /
6d0f6bcf	336	0x000008a0 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO4
aaf224ab WD	337	\| (unused) \| \
	338	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	339	PIO3 \| (unused) \| \|
	340	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	341	\| (unused) \| \|
	342	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	343	\| data (1 bit) (ro) \| /
6d0f6bcf	344	0x00000890 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO3
aaf224ab WD	345	\| (unused) \| \
	346	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	347	PIO2 \| (unused) \| \|
	348	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	349	\| direction (4 bit) (rw) \| \|
	350	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	351	\| data (4 bit) (rw) \| /
6d0f6bcf	352	0x00000880 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO2
aaf224ab WD	353	\| (unused) \| \
	354	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	355	PIO1 \| (unused) \| \|
	356	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	357	\| direction (8 bit) (rw) \| \|
	358	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	359	\| data (8 bit) (rw) \| /
6d0f6bcf	360	0x00000870 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO1
aaf224ab WD	361	\| (unused) \| \
	362	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	363	PIO0 \| (unused) \| \|
	364	[3] + 0x08 \|- - - - - - - - - - - - - - - -\| > 0x00000010
	365	\| direction (8 bit) (rw) \| \|
	366	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	367	\| data (8 bit) (rw) \| /
6d0f6bcf	368	0x00000860 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_PIO0
aaf224ab WD	369	\| (unused) \| \
	370	+ 0x1c \|- - - - - - - - - - - - - - - -\| \|
	371	\| (unused) \| \|
	372	+ 0x18 \|- - - - - - - - - - - - - - - -\| \|
	373	\| snaph (16 bit) (rw) \| \|
	374	+ 0x14 \|- - - - - - - - - - - - - - - -\| \|
	375	TIMER0 \| snapl (16 bit) (rw) \| \|
	376	[2] + 0x10 \|- - - - - - - - - - - - - - - -\| > 0x00000020
	377	\| periodh (16 bit) (rw) \| \|
	378	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	379	\| periodl (16 bit) (rw) \| \|
	380	+ 0x08 \|- - - - - - - - - - - - - - - -\| \|
	381	\| control (4 bit) (rw) \| \|
	382	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	383	\| status (2 bit) (rw) \| /
6d0f6bcf	384	0x00000840 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_TIMER0
aaf224ab WD	385	\| (unused) \| \
	386	+ 0x1c \|- - - - - - - - - - - - - - - -\| \|
	387	\| (unused) \| \|
	388	+ 0x18 \|- - - - - - - - - - - - - - - -\| \|
	389	\| (unused) \| \|
	390	+ 0x14 \|- - - - - - - - - - - - - - - -\| \|
	391	UART1 \| (unused) \| > 0x00000020
	392	[1] + 0x10 \|- - - - - - - - - - - - - - - -\| \|
	393	\| control (10 bit) (rw) \| \|
	394	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	395	\| status (10 bit) (rw) \| \|
	396	+ 0x08 \|- - - - - - - - - - - - - - - -\| \|
	397	\| txdata (8 bit) (wo) \| \|
	398	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	399	\| rxdata (8 bit) (ro) \| /
6d0f6bcf	400	0x00000820 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_UART1
aaf224ab WD	401	\| (unused) \| \
	402	+ 0x1c \|- - - - - - - - - - - - - - - -\| \|
	403	\| (unused) \| \|
	404	+ 0x18 \|- - - - - - - - - - - - - - - -\| \|
	405	\| (unused) \| \|
	406	+ 0x14 \|- - - - - - - - - - - - - - - -\| \|
	407	UART0 \| (unused) \| > 0x00000020
	408	[1] + 0x10 \|- - - - - - - - - - - - - - - -\| \|
	409	\| control (10 bit) (rw) \| \|
	410	+ 0x0c \|- - - - - - - - - - - - - - - -\| \|
	411	\| status (10 bit) (rw) \| \|
	412	+ 0x08 \|- - - - - - - - - - - - - - - -\| \|
	413	\| txdata (8 bit) (wo) \| \|
	414	+ 0x04 \|- - - - - - - - - - - - - - - -\| \|
	415	\| rxdata (8 bit) (ro) \| /
6d0f6bcf	416	0x00000800 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_UART0
aaf224ab WD	417
	418	- - - - - - - - - - - on chip memory 1 - - - - - - - - - - -
	419
	420	0x00000800 ---32-----------16\|15------------0-
	421	\| : \| \
	422	\| : \| \|
6d0f6bcf	423	GERMS \| : \| > CONFIG_SYS_NIOS_CPU_ROM_SIZE
aaf224ab WD	424	\| : \| \| = 0x00000800
aaf224ab WD	425	\| : \| /
6d0f6bcf JCPV	426	0x00000000 \|- - - - - - - - - - - - - - - -+- - CONFIG_SYS_NIOS_CPU_RST_VECT
6d0f6bcf JCPV	427	0x00000000 ---32-----------16\|15------------0- CONFIG_SYS_NIOS_CPU_ROM_BASE
aaf224ab WD	428
	429
	430	===============================================================================
	431	F L A S H M E M O R Y A L L O C A T I O N
	432	===============================================================================
	433
	434	0x01800000 ---8-------------4\|3-------------0-
	435	\| : \| \
	436	\| : \| \|
	437	\| : \| > 6 MByte ROM FS
	438	\| : \| \|
	439	\| : \| /
	440	0x01200000 --+- - - - - - - -:- - - - - - - -+- - file system image(s)
	441	\| : \| \
	442	\| : \| \|
	443	\| : \| > 1728 kByte ucLinux
	444	\| : \| \|
	445	\| : \| /
	446	0x01050000 --+- - - - - - - -:- - - - - - - -+- - os image(s)
	447	\| : \| \
	448	0x01040000 --+- - - - - - - -:- - - - - - - -+-\|- u-boot environment
	449	\| : \| \|
	450	\| : \| > 320 kByte U-Boot
	451	\| : \| \|
	452	\| : \| \|
	453	\| : \| /
	454	0x01000000 --+- - - - - - - -:- - - - - - - -+- - u-boot _start()
	455	0x01000000 ---8-------------4\|3-------------0-
	456
	457
	458	===============================================================================
	459	R E F E R E N C E S
	460	===============================================================================
	461	[1] http://www.altera.com/literature/ds/ds_nios_uart.pdf
	462	[2] http://www.altera.com/literature/ds/ds_nios_timer.pdf
	463	[3] http://www.altera.com/literature/ds/ds_nios_pio.pdf
	464	[4] http://www.altera.com/literature/ds/ds_nios_spi.pdf
	465	[5] http://www.t13.org/index.html
	466
	467
	468	===============================================================================
	469	Stephan Linz <linz@li-pro.net>