Fix some layout issues and typos.

Reorganizing some files to parts of the
documentation where their content matches.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation/boards.dox

@@ -10,7 +10,10 @@ ARM type:
 
 - @subpage pcm037
 - @subpage pcm038
+- @subpage pcm043
+- @subpage imx21ads
 - @subpage imx27ads
+- @subpage the3stack
 - @subpage scb9328
 - @subpage netx
 - @subpage dev_omap_arch

Documentation/developers_manual.dox

@@ -8,9 +8,9 @@ Some background knowledge for some frameworks in U-Boot v2
 
 Hints and tips for simply adapting U-Boot v2
 
- - @subpage dev_board
- - @subpage dev_cpu
  - @subpage dev_architecture
+ - @subpage dev_cpu
+ - @subpage dev_board
  - @subpage dev_params
 
 Various themes:
@@ -19,4 +19,4 @@ Various themes:
  - @subpage boot_preparation
  - @subpage uboot_simul
 
-*/
+*/

arch/architecture.dox

@@ -29,17 +29,65 @@ to find the right place in whatever environment and U-Boot sizes.
 	.section ".text_entry","ax"
 @endcode
 
+@section arch_files List of changes
+
+ - create a new subdirectory in /arch
+TODO
+
 */
 
-/** @page dev_cpu Intergrate a new CPU (MACH)
+/** @page dev_cpu Integrate a new CPU (MACH)
 
 Features required for every CPU:
 
  - clocksource
  - CPU reset function
 
+@section time_keeping Time keeping
+
+In U-Boot-v2 we are using the clocksource mechanism from the Linux Kernel.
+This makes it fairly easy to add timer functionality for a new board or
+architecture.
+
+Apart from initialization there is only one function to be registerd:
+clocksource_read(). This function returns the current value of a free running
+counter. Other functions like udelay() and get_time_ns() are derived from this
+function. The only thing you have to implement is a clocksource driver and
+to register it at runtime.
+
+@code
+static uint64_t mycpu_clocksource_read(void)
+{
+	TODO
+}
+
+static struct clocksource cs = {
+	.read	= mycpu_clocksource_read,
+	.mask	= 0xffffffff,
+	.shift	= 10,
+};
+
+....
+	init_clock(&cs);
+....
+@endcode
+
+See arch/arm/mach-imx/clocksource.c for an example. clocksource drivers from
+the Linux Kernel can be used nearly 1:1, except for the register accesses.
+
+Note: For clocksources the __lshrdi3 symbol is needed. You can find the
+function for your architecture in the Linux Kernel or a libc of your choice.
+
+Note: U-Boot-v2 expects an upward counting counter!
+
+@section reset_function Reset function
+
+TODO
+
  - @subpage dev_arm_mach
  - @subpage dev_bf_mach
  - @subpage dev_ppc_mach
 
 */
+
+

arch/arm/mach-arm.dox

@@ -34,4 +34,17 @@ the first C instruction in U-Boot. At this point of time:\n
 For details on specific architectures:
  - @subpage dev_omap_arch
 
+@section mach_arm_files List of changes
+
+Lets call the new MACH new_cpu.
+
+ - create a new subdirectory in /arch/arm/new_cpu
+ - add /arch/arm/new_cpu/Kconfig
+ - add /arch/arm/new_cpu/Makfile
+ - add other CPU specific code into /arch/arm/new_cpu/
+ - modify /arch/arm/Kconfig
+ - modify /arch/arm/Makfile
+
+TODO add more details
+
 */

board/board.dox

@@ -78,7 +78,7 @@ TBD
 
 @section board_mod_files These files needs to be modified:
 
- - modify board/board.doc
+ - modify board/board.dox
  - modify arch/\<architecture\>/Kconfig
   - add your board (MACH_*) to the list
   - add your default text base address for this architecture (ARCH_TEXT_BASE)

board/freescale-mx35-3-stack/3stack.dox

@@ -1,4 +1,4 @@
-/** @page 3stack Freescale MX35 3-Stack Board
+/** @page the3stack Freescale MX35 3-Stack Board
 
 
 */