A few early fixes in kernel build testing

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5734 42af7a65-404d-4744-a932-0658087f49c3

4 files changed, 86 insertions, 33 deletions

diff --git a/nuttx/configs/open1788/README.txt b/nuttx/configs/open1788/README.txt
index da41538cd..cc23ccb77 100644
--- a/nuttx/configs/open1788/README.txt
+++ b/nuttx/configs/open1788/README.txt
@@ -296,16 +296,16 @@ CONFIGURATION
   ----
     This is identical to the nsh configuration below except that NuttX
     is built as a kernel-mode, monolithic module and the user applications
-    are built separately.  This build requires a special make command; not
-    just 'make' but make with the following two arguments:
+    are built separately.  It is recommends to use a special make command;
+    not just 'make' but make with the following two arguments:
 
         make pass1 pass2
 
-    This is required because in the normal case (just 'make'), make will
-    create all dependencies then execute the pass1 and pass2 targets.  But
-    this example, pass2 depends on auto-generatd files produced during pass1.
-    This special make command ('make pass1 pass2') will make the dependencies
-    separately for each pass.
+    In the normal case (just 'make'), make will attempt to build both user-
+    and kernel-mode blobs more or less interleaved.  This actual works!
+    However, for me it is very confusing so I prefer the above make command:
+    Make the user-space binaries first (pass1), then make the the kernel-space
+    binaries (pass2)
 
     NOTES:
  
@@ -324,15 +324,23 @@ CONFIGURATION
        CONFIG_ARMV7M_TOOLCHAIN_BUILDROOT=y : Buildroot toolchain
        CONFIG_ARMV7M_OABI_TOOLCHAIN=y      : Older, OABI toolchain
 
-    3. At the end of the build, there four files will top-level build
-       directory:
+    3. At the end of the build, there will be several files in the top-level
+       NuttX build directory:
 
-       nuttx_user.elf    - The pass1 user-space ELF file
-       nuttx             - The pass2 kernel-space ELF file
-       nuttx_user.hex    - The pass1 Intel HEX format file
-       nuttx.hex         - The pass2 Intel HEX file
-       System.map        - Symbols in the kernel-space ELF file
-       User.map          - Symbols in the user-space ELF file
+       PASS1:
+         nuttx_user.elf    - The pass1 user-space ELF file
+         nuttx_user.hex    - The pass1 Intel HEX format file (selected in defconfig)
+         User.map          - Symbols in the user-space ELF file
+
+       PASS2:
+         nuttx             - The pass2 kernel-space ELF file
+         nuttx.hex         - The pass2 Intel HEX file (selected in defconfig)
+         System.map        - Symbols in the kernel-space ELF file
+
+       Loading these .elf files with OpenOCD is tricky.  It appears to me
+       that when nuttx_user.elf is loaded, it destroys the the nuttx image
+       in FLASH.  But loading the nuttx ELF does not harm the nuttx_user.elf
+       in FLASH.  Conclusion:  Always load nuttx_user.elf before nuttx.
 
   nsh
   ---
@@ -345,7 +353,7 @@ CONFIGURATION
        change this configuration using that tool, you should:
 
        a. Build and install the kconfig-mconf tool.  See nuttx/README.txt
-          and misc/tools/
+          and misc/tools//README.txt.
 
        b. Execute 'make menuconfig' in nuttx/ in order to start the
           reconfiguration process.
diff --git a/nuttx/configs/open1788/scripts/kernel-space.ld b/nuttx/configs/open1788/scripts/kernel-space.ld
index 0d145ffea..84cf9212c 100755
--- a/nuttx/configs/open1788/scripts/kernel-space.ld
+++ b/nuttx/configs/open1788/scripts/kernel-space.ld
@@ -33,33 +33,34 @@
  *
  ****************************************************************************/
 
-/* The AT91SAM3U-4 has 256Kb of FLASH beginning at address 0x0008:0000,
- * 32Kb of SRAM beginning at address 0x2000:0000, and 16Kb of SRAM beginning
- * at address 0x2008:000 (used only for heap).  When booting from FLASH,
- * FLASH memory is aliased to address 0x0000:0000 where the code expects to
- * begin execution by jumping to the entry point in the 0x0800:0000 address
- * range.
+/* The LPC1788 has 512Kb of FLASH beginning at address 0x0000:0000 and
+ * 96Kb of total SRAM: 64Kb of SRAM in the CPU block beginning at address
+ * 0x10000000 and 32Kb of Peripheral SRAM in two banks, 8Kb at addresses
+ * 0x20000000 bank0 first and 8kb at 0x20002000 at bank0 second. And 16Kb
+ * at 0x20004000 on bank1.
  *
  * For MPU support, the kernel-mode NuttX section is assumed to be 64Kb of
  * FLASH and 4Kb of SRAM.  That, of course, can be optimized as needed (See
- * also configs/open1788/scripts/kernel.ld).
+ * also configs/open1788/scripts/kernel-space.ld).
  */
 
 MEMORY
 {
     /* 256Kb FLASH */
 
-    kflash (rx)  : ORIGIN = 0x00080000, LENGTH = 64K
-    uflash (rx)  : ORIGIN = 0x00090000, LENGTH = 192K
+    kflash (rx)      : ORIGIN = 0x00000000, LENGTH = 64K
+    uflash (rx)      : ORIGIN = 0x00010000, LENGTH = 448K
 
-    /* 32Kb SRAM */
+    /* 64Kb of SRAM in the CPU block */
 
-    ksram  (rwx) : ORIGIN = 0x20000000, LENGTH = 4K
-    usram  (rwx) : ORIGIN = 0x20001000, LENGTH = 28K
+    ksram (rwx)      : ORIGIN = 0x10000000, LENGTH = 4K
+    usram (rwx)      : ORIGIN = 0x10001000, LENGTH = 60K
 
-    /* 16Kb SRAM */
+    /* Other peripheral memory (free, nothing is linked here) */
 
-    sram2 (rwx) : ORIGIN = 0x20080000, LENGTH = 16K
+    ahbram8_b0a(rwx) : ORIGIN = 0x20000000, LENGTH = 8K
+    ahbram8_b0b(rwx) : ORIGIN = 0x20002000, LENGTH = 8K
+    ahbram16(rwx)    : ORIGIN = 0x20004000, LENGTH = 16K
 }
 
 OUTPUT_ARCH(arm)
diff --git a/nuttx/configs/open1788/scripts/user-space.ld b/nuttx/configs/open1788/scripts/user-space.ld
index 49c0b8728..149be92f1 100644
--- a/nuttx/configs/open1788/scripts/user-space.ld
+++ b/nuttx/configs/open1788/scripts/user-space.ld
@@ -53,8 +53,8 @@ MEMORY
 
     /* 64Kb of SRAM in the CPU block */
 
-    ksram (rwx)      : ORIGIN = 0x20000000, LENGTH = 4K
-    usram (rwx)      : ORIGIN = 0x20001000, LENGTH = 60K
+    ksram (rwx)      : ORIGIN = 0x10000000, LENGTH = 4K
+    usram (rwx)      : ORIGIN = 0x10001000, LENGTH = 60K
 
     /* Other peripheral memory (free, nothing is linked here) */
 
diff --git a/nuttx/configs/open1788/tools/open1788.cfg b/nuttx/configs/open1788/tools/open1788.cfg
index 9c251b4e9..54f699216 100755
--- a/nuttx/configs/open1788/tools/open1788.cfg
+++ b/nuttx/configs/open1788/tools/open1788.cfg
@@ -29,6 +29,7 @@ set CPUROMSIZE 0x80000
 set CCLK 12000
 
 ### From /usr/local/share/openocd/scripts/targets/lpc17xx.cfg
+### With additions to set the operating frequency to 120MHz
 # Common LPC17xx logic
 
 # LPC17xx chips support both JTAG and SWD transports.
@@ -100,6 +101,49 @@ flash bank $_FLASHNAME lpc2000 0x0 $_CPUROMSIZE 0 0 $_TARGETNAME \
 adapter_khz 1000
 
 $_TARGETNAME configure -event reset-init {
+	echo "Going to 120MHz"
+
+	# PLL0CON: Disable PLL
+	mww 0x400FC080 0x00000000
+	# PLLFEED
+	mww 0x400FC08C 0x000000AA
+	# PLLFEED
+	mww 0x400FC08C 0x00000055
+
+	# CLKSEL: internal 12MHz RC oscillator Div 1.
+	mww 0x400FC104 0x00000001
+	# CLKSRCSEL: Clock source = internal 12MHz RC oscillator
+	mww 0x400FC10C 0x00000000
+
+	# PLL0CFG: M=10,P=1 -> PLL=240 MHz
+	mww 0x400FC084 0x00000009
+	# PLLFEED
+	mww 0x400FC08C 0x000000AA
+	# PLLFEED
+	mww 0x400FC08C 0x00000055
+
+	# PLL0CON: Enable PLL
+	mww 0x400FC080 0x00000001
+	# PLLFEED
+	mww 0x400FC08C 0x000000AA
+	# PLLFEED
+	mww 0x400FC08C 0x00000055
+
+	sleep 50
+
+	# PLL0CON: Connect PLL
+	# CCLKSEL=PLLED(240MHz)/2 (=120 MHz)
+	mww 0x400FC104 0x00000102
+	# PLLFEED
+	mww 0x400FC08C 0x000000AA
+	# PLLFEED
+	mww 0x400FC08C 0x00000055
+
+	# Dividing CPU clock by 8 should be pretty conservative
+	#
+	#
+	adapter_khz 1500
+
 	# Do not remap 0x0000-0x0020 to anything but the flash (i.e. select
 	# "User Flash Mode" where interrupt vectors are _not_ remapped,
 	# and reside in flash instead).
@@ -114,7 +158,7 @@ $_TARGETNAME configure -event reset-init {
 	#
 	# http://ics.nxp.com/support/documents/microcontrollers/?scope=LPC1768&type=user
 
-	mww 0x4ba00477 0x01
+	mww 0x400FC040 0x01
 }
 
 # if srst is not fitted use VECTRESET to