Update SH-1 status
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1225 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
c7d6d7463d
commit
87c8a5b9bf
@ -1,3 +1,16 @@
|
|||||||
|
Status
|
||||||
|
^^^^^^
|
||||||
|
|
||||||
|
*** UNSTABLE ***
|
||||||
|
The port is basically complete and many examples run correctly. However, there
|
||||||
|
are remaining instabilities that make the port un-usable. The nature of these
|
||||||
|
is not understood; the behavior is that certain SH-1 instructions stop working
|
||||||
|
as advertised. This could be a silicon problem, some pipeline issue that is not
|
||||||
|
handled properly by the gcc 3.4.5 toolchain (which has very limit SH-1 support
|
||||||
|
to begin with), or perhaps with the CMON debugger. At any rate, I have exhausted
|
||||||
|
all of the energy that I am willing to put into this cool old processor for the
|
||||||
|
time being.
|
||||||
|
|
||||||
Toolchain
|
Toolchain
|
||||||
^^^^^^^^^
|
^^^^^^^^^
|
||||||
|
|
||||||
@ -39,3 +52,87 @@ shterm
|
|||||||
The shterm subdirectory contains a small terminal emulation
|
The shterm subdirectory contains a small terminal emulation
|
||||||
program that supports these special interactions for file transfers.
|
program that supports these special interactions for file transfers.
|
||||||
|
|
||||||
|
Configurations
|
||||||
|
^^^^^^^^^^^^^^
|
||||||
|
|
||||||
|
Each SH-1 configuration is maintained in a sudirectory and
|
||||||
|
can be selected as follow:
|
||||||
|
|
||||||
|
cd tools
|
||||||
|
./configure.sh us7032evb1/<subdir>
|
||||||
|
cd -
|
||||||
|
. ./setenv.sh
|
||||||
|
|
||||||
|
Where <subdir> is one of the following:
|
||||||
|
|
||||||
|
ostest
|
||||||
|
^^^^^^as advertised. This could be a silicon problem, some pipeline issue that is not handled properly by the gcc 3.4.5 tool
|
||||||
|
|
||||||
|
This configuration directory, performs a simple OS test using
|
||||||
|
examples/ostest.
|
||||||
|
|
||||||
|
nsh
|
||||||
|
^^^
|
||||||
|
|
||||||
|
Configures the NuttShell (nsh) located at examples/nsh. The
|
||||||
|
Configuration enables only the serial NSH interfaces.
|
||||||
|
|
||||||
|
NOTE: At present, the NSH example does not run. See the "Status"
|
||||||
|
discussion above for a full explanation.
|
||||||
|
|
||||||
|
Configuration Options
|
||||||
|
^^^^^^^^^^^^^^^^^^^^^
|
||||||
|
|
||||||
|
In additional to the common configuration options listed in the
|
||||||
|
file configs/README.txt, there are other configuration options
|
||||||
|
specific to the SH-1
|
||||||
|
|
||||||
|
Architecture selection
|
||||||
|
|
||||||
|
CONFIG_ARCH - identifies the arch subdirectory and, hence, the
|
||||||
|
processor architecture. This should be sh (for arch/sh)
|
||||||
|
CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory.
|
||||||
|
This should be sh1 (for arch/sh/src/sh1 and arch/sh/include/sh1)
|
||||||
|
CONFIG_ARCH_SH1 andCONFIG_ARCH_SH7032 - for use in C code. These
|
||||||
|
identify the particular chip or SoC that the architecture is
|
||||||
|
implemented in.
|
||||||
|
CONFIG_ARCH_BOARD - identifies the configs subdirectory and, hence,
|
||||||
|
the board that supports the particular chip or SoC. This
|
||||||
|
should be us7032evb1 for (configs/us7032evb1).
|
||||||
|
CONFIG_ARCH_BOARD_US7032EVB1 - for use in C code
|
||||||
|
CONFIG_ENDIAN_BIG - the SH-1 usually runs big-endian
|
||||||
|
CONFIG_ARCH_NOINTC - define if the architecture does not
|
||||||
|
support an interrupt controller or otherwise cannot support
|
||||||
|
APIs like up_enable_irq() and up_disable_irq(). Should be
|
||||||
|
defined.
|
||||||
|
CONFIG_ARCH_IRQPRIO
|
||||||
|
Define if the architecture suports prioritizaton of interrupts
|
||||||
|
and the up_prioritize_irq() API. Should be defined.
|
||||||
|
CONFIG_BOARD_LOOPSPERMSEC - for delay loops
|
||||||
|
CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to SH1_LCEVB1
|
||||||
|
CONFIG_DRAM_SIZE - Describes the internal DRAM.
|
||||||
|
CONFIG_DRAM_START - The start address of internal DRAM
|
||||||
|
CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
|
||||||
|
stack. If defined, this symbol is the size of the interrupt
|
||||||
|
stack in bytes. If not defined, the user task stacks will be
|
||||||
|
used during interrupt handling.
|
||||||
|
CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
|
||||||
|
|
||||||
|
CONFIG_SH1_DMAC0, CONFIG_SH1_DMAC1, CONFIG_SH1_DMAC2, CONFIG_SH1_DMAC3,
|
||||||
|
CONFIG_SH1_ITU1, CONFIG_SH1_ITU2, CONFIG_SH1_ITU3, CONFIG_SH1_ITU4,
|
||||||
|
CONFIG_SH1_SCI0, CONFIG_SH1_SCI1, CONFIG_SH1_PCU, CONFIG_SH1_AD,
|
||||||
|
CONFIG_SH1_WDT, CONFIG_SH1_CMI - Each unused chip block should b
|
||||||
|
disabled to save space
|
||||||
|
|
||||||
|
SH1 specific device driver settings
|
||||||
|
|
||||||
|
CONFIG_SCIn_SERIAL_CONSOLE - selects the SCIn for the
|
||||||
|
console and ttys0 (default is the UART0).
|
||||||
|
CONFIG_SCIn_RXBUFSIZE - Characters are buffered as received.
|
||||||
|
This specific the size of the receive buffer
|
||||||
|
CONFIG_SCIn_TXBUFSIZE - Characters are buffered before
|
||||||
|
being sent. This specific the size of the transmit buffer
|
||||||
|
CONFIG_SCIn_BAUD - The configure BAUD of the UART. Must be
|
||||||
|
CONFIG_SCIn_BITS - The number of bits. Must be either 7 or 8.
|
||||||
|
CONFIG_SCIn_PARTIY - 0=no parity, 1=odd parity, 2=even parity, 3=mark 1, 4=space 0
|
||||||
|
CONFIG_SCIn_2STOP - Two stop bits
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user