Add option for ARM interrupt stack

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@981 42af7a65-404d-4744-a932-0658087f49c3

3 files changed, 106 insertions, 0 deletions

diff --git a/nuttx/configs/mcu123-lpc214x/README.txt b/nuttx/configs/mcu123-lpc214x/README.txt
index bab1758ee..16456266e 100644
--- a/nuttx/configs/mcu123-lpc214x/README.txt
+++ b/nuttx/configs/mcu123-lpc214x/README.txt
@@ -15,6 +15,102 @@ For example, the path to the built lpc21isp binary will most likely
 have to have change.  Then move this script to the top level NuttX
 directory and simply execute it to load NuttX onto the board.
 
+ARM/LPC214X-specific Configuration Options
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+	CONFIG_ARCH - Identifies the arch/ subdirectory.  This should
+	   be set to:
+
+	   CONFIG_ARCH=arm
+
+	CONFIG_ARCH_name - For use in C code:
+
+	   CONFIG_ARCH_ARM=y
+
+	CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+
+	   CONFIG_ARCH_CHIP=c5471
+
+	CONFIG_ARCH_CHIP_name - For use in C code
+
+	   CONFIG_ARCH_CHIP_C5471
+
+	CONFIG_ARCH_BOARD - Identifies the configs subdirectory and
+	   hence, the board that supports the particular chip or SoC.
+
+	   CONFIG_ARCH_BOARD=c5471evm (for the Spectrum Digital C5471 EVM)
+
+	CONFIG_ARCH_BOARD_name - For use in C code
+
+	   CONFIG_ARCH_BOARD_C5471EVM (for the Spectrum Digital C5471 EVM)
+
+	CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation
+	   of delay loops
+
+	CONFIG_ENDIAN_BIG - define if big endian (default is little
+	   endian)
+
+	CONFIG_DRAM_SIZE - Describes the installed DRAM.
+
+	CONFIG_DRAM_START - The start address of installed DRAM
+
+	CONFIG_DRAM_END - Should be (CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+
+	CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
+	   have LEDs
+
+	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
+
+  LPC2148 specific chip initialization
+
+	CONFIG_EXTMEM_MODE, CONFIG_RAM_MODE, CONFIG_CODE_BASE, CONFIG_PLL_SETUP,
+	CONFIG_MAM_SETUP, CONFIG_APBDIV_SETUP, CONFIG_EMC_SETUP, CONFIG_BCFG0_SETUP,
+	CONFIG_BCFG1_SETUP, CONFIG_BCFG2_SETUP, CONFIG_BCFG3_SETUP, CONFIG_ADC_SETUP
+
+  LPC214X specific device driver settings
+
+	CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
+	   console and ttys0 (default is the UART0).
+
+	CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
+	   This specific the size of the receive buffer
+
+	CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
+	   being sent.  This specific the size of the transmit buffer
+
+	CONFIG_UARTn_BAUD - The configure BAUD of the UART.
+
+	CONFIG_UARTn_BITS - The number of bits.  Must be either 7 or 8.
+
+	CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity, 3=mark 1, 4=space 0
+
+	CONFIG_UARTn_2STOP - Two stop bits
+
+  LPC214X USB Configuration
+
+	CONFIG_LPC214X_USBDEV_FRAME_INTERRUPT
+	   Handle USB Start-Of-Frame events. 
+	   Enable reading SOF from interrupt handler vs. simply reading on demand.
+	   Probably a bad idea... Unless there is some issue with sampling the SOF
+	   from hardware asynchronously.
+
+	CONFIG_LPC214X_USBDEV_EPFAST_INTERRUPT
+	   Enable high priority interrupts.  I have no idea why you might want to
+	   do that
+
+	CONFIG_LPC214X_USBDEV_NDMADESCRIPTORS
+	   Number of DMA descriptors to allocate in the 8Kb USB RAM.  This is a
+	   tradeoff between the number of DMA channels that can be supported vs
+	   the size of the DMA buffers available.
+
+	CONFIG_LPC214X_USBDEV_DMA
+	   Enable lpc214x-specific DMA support
+
 Configurations
 ^^^^^^^^^^^^^^
 
diff --git a/nuttx/configs/mcu123-lpc214x/nsh/defconfig b/nuttx/configs/mcu123-lpc214x/nsh/defconfig
index 3dec91a3a..cf194adf1 100644
--- a/nuttx/configs/mcu123-lpc214x/nsh/defconfig
+++ b/nuttx/configs/mcu123-lpc214x/nsh/defconfig
@@ -50,6 +50,10 @@
 # CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to lpc2148.
 # 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_ARCH=arm
@@ -62,6 +66,7 @@ CONFIG_ARCH_LEDS=y
 CONFIG_DRAM_SIZE=0x00008000
 CONFIG_DRAM_START=0x40000000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 
 #
diff --git a/nuttx/configs/mcu123-lpc214x/ostest/defconfig b/nuttx/configs/mcu123-lpc214x/ostest/defconfig
index 4a1e38193..fdbabd3ed 100644
--- a/nuttx/configs/mcu123-lpc214x/ostest/defconfig
+++ b/nuttx/configs/mcu123-lpc214x/ostest/defconfig
@@ -50,6 +50,10 @@
 # CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to lpc2148.
 # 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_ARCH=arm
@@ -62,6 +66,7 @@ CONFIG_ARCH_LEDS=y
 CONFIG_DRAM_SIZE=0x00008000
 CONFIG_DRAM_START=0x40000000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+CONFIG_ARCH_INTERRUPTSTACK=0
 CONFIG_ARCH_STACKDUMP=y
 
 #