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><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="IQ80310">ARM/Xscale Cyclone IQ80310</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6164">Overview</H2
><P
>RedBoot supports
both serial ports and the built-in ethernet port for communication and downloads.
The default serial port settings are 115200,8,N,1. RedBoot also supports flash
management for the onboard 8MB flash.</P
><P
>The following RedBoot configurations are supported:
<DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN6174"><P
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><THEAD
><TR
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Configuration</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Mode</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>Description</TH
><TH
ALIGN="LEFT"
VALIGN="TOP"
>File</TH
></TR
></THEAD
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
>ROM</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[ROM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from the board's flash boot
sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_ROM.ecm</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RAM</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[RAM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from RAM with RedBoot in the
flash boot sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_RAM.ecm</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
>ROMA</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[ROM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from flash address 0x40000, with
ARM bootloader in flash boot sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_ROMA.ecm</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RAMA</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>[RAM]</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>RedBoot running from RAM with ARM bootloader in
flash boot sector.</TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>redboot_RAMA.ecm</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6203">Initial Installation Method</H2
><P
>The board manufacturer provides a DOS application which is
capable of programming the flash over the PCI bus, and this is
required for initial installations of RedBoot. Please see the board
manual for information on using this utility. In general, the process
involves programming one of the two flash based RedBoot images to
flash. The ROM mode RedBoot (which runs from the flash boot sector)
should be programmed to flash address 0x00000000. The ROMA RedBoot
mode (which is started by the ARM bootloader) should be programmed to
flash address 0x00004000.</P
><P
> To install RedBoot to run from the flash boot sector, use the manufacturer's
flash utility to install the ROM mode image at address zero.</P
><P
>To install RedBoot to run from address 0x40000 with the ARM bootloader
in the flash boot sector, use the manufacturer's flash utility to install
the ROMA mode image at address 0x40000. </P
><P
>After booting the initial installation of RedBoot, this warning may
be printed: <TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>flash configuration checksum error or invalid key</PRE
></TD
></TR
></TABLE
>This is normal, and indicates that the flash must be configured
for use by RedBoot. Even if the above message is not printed, it may be a
good idea to reinitialize the flash anyway. Do this with the <B
CLASS="COMMAND"
>fis</B
> command: <TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>fis init</B
></TT
>
About to initialize [format] flash image system - continue (y/n)? <TT
CLASS="USERINPUT"
><B
>y</B
></TT
>
*** Initialize flash Image System
Warning: device contents not erased, some blocks may not be usable
... Unlock from 0x007e0000-0x00800000: .
... Erase from 0x007e0000-0x00800000: .
... Program from 0xa1fd0000-0xa1fd0400 at 0x007e0000: .
... Lock from 0x007e0000-0x00800000: .
Followed by the fconfig command:
RedBoot> <TT
CLASS="USERINPUT"
><B
>fconfig</B
></TT
>
Run script at boot: <TT
CLASS="USERINPUT"
><B
>false</B
></TT
>
Use BOOTP for network configuration: <TT
CLASS="USERINPUT"
><B
>false</B
></TT
>
Local IP address: <TT
CLASS="USERINPUT"
><B
>192.168.1.153</B
></TT
>
Default server IP address: <TT
CLASS="USERINPUT"
><B
>192.168.1.10</B
></TT
>
GDB connection port: <TT
CLASS="USERINPUT"
><B
>1000</B
></TT
>
Network debug at boot time: <TT
CLASS="USERINPUT"
><B
>false</B
></TT
>
Update RedBoot non-volatile configuration - continue (y/n)? <TT
CLASS="USERINPUT"
><B
>y</B
></TT
>
... Unlock from 0x007c0000-0x007e0000: .
... Erase from 0x007c0000-0x007e0000: .
... Program from 0xa0013018-0xa0013418 at 0x007c0000: .
... Lock from 0x007c0000-0x007e0000: .</PRE
></TD
></TR
></TABLE
></P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>When later updating RedBoot in situ, it is important to
use a matching ROM and RAM mode pair of images. So use either RAM/ROM
or RAMA/ROMA images. Do not mix them.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6224">Error codes</H2
><P
>RedBoot uses the two digit LED display to indicate errors during board
initialization. Possible error codes are: <P
CLASS="LITERALLAYOUT"
>88 - Unknown Error<br>
55 - I2C Error<br>
FF - SDRAM Error<br>
01 - No Error</P
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6228">Using RedBoot with ARM Bootloader</H2
><P
>RedBoot can coexist with ARM tools in flash on the IQ80310 board. In
this configuration, the ARM bootloader will occupy the flash boot sector while
RedBoot is located at flash address 0x40000. The sixteen position rotary switch
is used to tell the ARM bootloader to jump to the RedBoot image located at
address 0x40000. RedBoot is selected by switch position 0 or 1. Other switch
positions are used by the ARM firmware and RedBoot will not be started. </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6231">Special RedBoot Commands</H2
><P
>A special RedBoot command, <B
CLASS="COMMAND"
>diag</B
>, is used to
access a set of hardware diagnostics provided by the board
manufacturer. To access the diagnostic menu, enter diag at the RedBoot prompt:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>RedBoot> <TT
CLASS="USERINPUT"
><B
>diag</B
></TT
>
Entering Hardware Diagnostics - Disabling Data Cache!
1 - Memory Tests
2 - Repeating Memory Tests
3 - 16C552 DUART Serial Port Tests
4 - Rotary Switch S1 Test for positions 0-3
5 - seven Segment LED Tests
6 - Backplane Detection Test
7 - Battery Status Test
8 - External Timer Test
9 - i82559 Ethernet Configuration
10 - i82559 Ethernet Test
11 - Secondary PCI Bus Test
12 - Primary PCI Bus Test
13 - i960Rx/303 PCI Interrupt Test
14 - Internal Timer Test
15 - GPIO Test
0 - quit Enter the menu item number (0 to quit):</PRE
></TD
></TR
></TABLE
>
Tests for various hardware subsystems are provided, and some
tests require special hardware in order to execute normally. The Ethernet
Configuration item may be used to set the board ethernet address.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6237">IQ80310 Hardware Tests</H2
><P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>1 - Memory Tests
2 - Repeating Memory Tests
3 - 16C552 DUART Serial Port Tests
4 - Rotary Switch S1 Test for positions 0-3
5 - 7 Segment LED Tests
6 - Backplane Detection Test
7 - Battery Status Test
8 - External Timer Test
9 - i82559 Ethernet Configuration
10 - i82559 Ethernet Test
11 - i960Rx/303 PCI Interrupt Test
12 - Internal Timer Test
13 - Secondary PCI Bus Test
14 - Primary PCI Bus Test
15 - Battery Backup SDRAM Memory Test
16 - GPIO Test
17 - Repeat-On-Fail Memory Test
18 - Coyonosa Cache Loop (No return)
19 - Show Software and Hardware Revision
0 - quit
Enter the menu item number (0 to quit): </PRE
></TD
></TR
></TABLE
></P
><P
>Tests for various hardware subsystems are provided, and some tests require
special hardware in order to execute normally. The Ethernet Configuration
item may be used to set the board ethernet address.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6242">Rebuilding RedBoot</H2
><P
>These shell variables provide the platform-specific information
needed for building RedBoot according to the procedure described in
<A
HREF="rebuilding-redboot.html"
>Chapter 3</A
>:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>export TARGET=iq80310
export ARCH_DIR=arm
export PLATFORM_DIR=iq80310</PRE
></TD
></TR
></TABLE
></P
><P
>The names of configuration files are listed above with the
description of the associated modes.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6248">Interrupts</H2
><P
>RedBoot uses an interrupt vector table which is located at address 0xA000A004.
Entries in this table are pointers to functions with this protoype:: <TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int irq_handler( unsigned vector, unsigned data )</PRE
></TD
></TR
></TABLE
>On an IQ80310
board, the vector argument is one of 49 interrupts defined in <TT
CLASS="COMPUTEROUTPUT"
>hal/arm/iq80310/current/include/hal_platform_ints.h:</TT
>: <TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>// *** 80200 CPU ***
#define CYGNUM_HAL_INTERRUPT_reserved0 0
#define CYGNUM_HAL_INTERRUPT_PMU_PMN0_OVFL 1 // See Ch.12 - Performance Mon.
#define CYGNUM_HAL_INTERRUPT_PMU_PMN1_OVFL 2 // PMU counter 0/1 overflow
#define CYGNUM_HAL_INTERRUPT_PMU_CCNT_OVFL 3 // PMU clock overflow
#define CYGNUM_HAL_INTERRUPT_BCU_INTERRUPT 4 // See Ch.11 - Bus Control Unit
#define CYGNUM_HAL_INTERRUPT_NIRQ 5 // external IRQ
#define CYGNUM_HAL_INTERRUPT_NFIQ 6 // external FIQ
// *** XINT6 interrupts ***
#define CYGNUM_HAL_INTERRUPT_DMA_0 7
#define CYGNUM_HAL_INTERRUPT_DMA_1 8
#define CYGNUM_HAL_INTERRUPT_DMA_2 9
#define CYGNUM_HAL_INTERRUPT_GTSC 10 // Global Time Stamp Counter
#define CYGNUM_HAL_INTERRUPT_PEC 11 // Performance Event Counter
#define CYGNUM_HAL_INTERRUPT_AAIP 12 // application accelerator unit
// *** XINT7 interrupts ***
// I2C interrupts
#define CYGNUM_HAL_INTERRUPT_I2C_TX_EMPTY 13
#define CYGNUM_HAL_INTERRUPT_I2C_RX_FULL 14
#define CYGNUM_HAL_INTERRUPT_I2C_BUS_ERR 15
#define CYGNUM_HAL_INTERRUPT_I2C_STOP 16
#define CYGNUM_HAL_INTERRUPT_I2C_LOSS 17
#define CYGNUM_HAL_INTERRUPT_I2C_ADDRESS 18
// Messaging Unit interrupts
#define CYGNUM_HAL_INTERRUPT_MESSAGE_0 19
#define CYGNUM_HAL_INTERRUPT_MESSAGE_1 20
#define CYGNUM_HAL_INTERRUPT_DOORBELL 21
#define CYGNUM_HAL_INTERRUPT_NMI_DOORBELL 22
#define CYGNUM_HAL_INTERRUPT_QUEUE_POST 23
#define CYGNUM_HAL_INTERRUPT_OUTBOUND_QUEUE_FULL 24
#define CYGNUM_HAL_INTERRUPT_INDEX_REGISTER 25
// PCI Address Translation Unit
#define CYGNUM_HAL_INTERRUPT_BIST 26
// *** External board interrupts (XINT3) ***
#define CYGNUM_HAL_INTERRUPT_TIMER 27 // external timer
#define CYGNUM_HAL_INTERRUPT_ETHERNET 28 // onboard enet
#define CYGNUM_HAL_INTERRUPT_SERIAL_A 29 // 16x50 uart A
#define CYGNUM_HAL_INTERRUPT_SERIAL_B 30 // 16x50 uart B
#define CYGNUM_HAL_INTERRUPT_PCI_S_INTD 31 // secondary PCI INTD
// The hardware doesn't (yet?) provide masking or status for these
// even though they can trigger cpu interrupts. ISRs will need to
// poll the device to see if the device actually triggered the
// interrupt.
#define CYGNUM_HAL_INTERRUPT_PCI_S_INTC 32 // secondary PCI INTC
#define CYGNUM_HAL_INTERRUPT_PCI_S_INTB 33 // secondary PCI INTB
#define CYGNUM_HAL_INTERRUPT_PCI_S_INTA 34 // secondary PCI INTA
// *** NMI Interrupts go to FIQ ***
#define CYGNUM_HAL_INTERRUPT_MCU_ERR 35
#define CYGNUM_HAL_INTERRUPT_PATU_ERR 36
#define CYGNUM_HAL_INTERRUPT_SATU_ERR 37
#define CYGNUM_HAL_INTERRUPT_PBDG_ERR 38
#define CYGNUM_HAL_INTERRUPT_SBDG_ERR 39
#define CYGNUM_HAL_INTERRUPT_DMA0_ERR 40
#define CYGNUM_HAL_INTERRUPT_DMA1_ERR 41
#define CYGNUM_HAL_INTERRUPT_DMA2_ERR 42
#define CYGNUM_HAL_INTERRUPT_MU_ERR 43
#define CYGNUM_HAL_INTERRUPT_reserved52 44
#define CYGNUM_HAL_INTERRUPT_AAU_ERR 45
#define CYGNUM_HAL_INTERRUPT_BIU_ERR 46
// *** ATU FIQ sources ***
#define CYGNUM_HAL_INTERRUPT_P_SERR 47
#define CYGNUM_HAL_INTERRUPT_S_SERR 48</PRE
></TD
></TR
></TABLE
>The data passed
to the ISR is pulled from a data table <TT
CLASS="COMPUTEROUTPUT"
>(hal_interrupt_data)</TT
> which immediately follows the interrupt vector table. With
49 interrupts, the data table starts at address 0xA000A0C8. </P
><P
>An application may create a normal C function with the above prototype
to be an ISR. Just poke its address into the table at the correct index and
enable the interrupt at its source. The return value of the ISR is ignored
by RedBoot.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6256">Memory Maps</H2
><P
>The first level page table is located at 0xa0004000. Two second level
tables are also used. One second level table is located at 0xa0008000 and
maps the first 1MB of flash. The other second level table is at 0xa0008400,
and maps the first 1MB of SDRAM. <DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>NOTE: </B
>The virtual memory maps in this section use a C and B column to indicate
whether or not the region is cached (C) or buffered (B).</P
></BLOCKQUOTE
></DIV
></P
><P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>Physical Address Range Description
----------------------- ----------------------------------
0x00000000 - 0x00000fff flash Memory
0x00001000 - 0x00001fff 80312 Internal Registers
0x00002000 - 0x007fffff flash Memory
0x00800000 - 0x7fffffff PCI ATU Outbound Direct Window
0x80000000 - 0x83ffffff Primary PCI 32-bit Memory
0x84000000 - 0x87ffffff Primary PCI 64-bit Memory
0x88000000 - 0x8bffffff Secondary PCI 32-bit Memory
0x8c000000 - 0x8fffffff Secondary PCI 64-bit Memory
0x90000000 - 0x9000ffff Primary PCI IO Space
0x90010000 - 0x9001ffff Secondary PCI IO Space
0x90020000 - 0x9fffffff Unused
0xa0000000 - 0xbfffffff SDRAM
0xc0000000 - 0xefffffff Unused
0xf0000000 - 0xffffffff 80200 Internal Registers
Virtual Address Range C B Description
----------------------- - - ----------------------------------
0x00000000 - 0x00000fff Y Y SDRAM
0x00001000 - 0x00001fff N N 80312 Internal Registers
0x00002000 - 0x007fffff Y N flash Memory
0x00800000 - 0x7fffffff N N PCI ATU Outbound Direct Window
0x80000000 - 0x83ffffff N N Primary PCI 32-bit Memory
0x84000000 - 0x87ffffff N N Primary PCI 64-bit Memory
0x88000000 - 0x8bffffff N N Secondary PCI 32-bit Memory
0x8c000000 - 0x8fffffff N N Secondary PCI 64-bit Memory
0x90000000 - 0x9000ffff N N Primary PCI IO Space
0x90010000 - 0x9001ffff N N Secondary PCI IO Space
0xa0000000 - 0xbfffffff Y Y SDRAM
0xc0000000 - 0xcfffffff Y Y Cache Flush Region
0xd0000000 - 0xd0000fff Y N first 4k page of flash
0xf0000000 - 0xffffffff N N 80200 Internal Registers </PRE
></TD
></TR
></TABLE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN6264">Platform Resource Usage</H2
><P
>The external timer is used as a polled timer to provide timeout support
for networking and XModem file transfers.</P
></DIV
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