[U-Boot] [PATCH v6] mx6: add support of multi-processor command

[York Sun]

On 07/28/2014 08:15 AM, Stefano Babic wrote:
> Hi Gabriel,
> 
> On 26/07/2014 20:35, Gabriel Huau wrote:
>> This allows u-boot to load different OS or Bare Metal application on
>> different cores of the i.MX6 SoC.
>> For example: running Android on cpu0 and a RT OS like QNX/FreeRTOS on cpu1.
>>
>> Signed-off-by: Gabriel Huau <contact at huau-gabriel.fr>
>> ---
>> Changes for v2:
>> 	- Add a commit log message to explain the purpose of this patch
>> Changes for v3:
>> 	- Remove unnecessary check for unsigned values when they are negative
>> Changes for v4:
>> 	- Add CONFIG_MP to the common mx6 configuration
>> 	- Get the number of CPUs dynamically instead of using a macro
>> Changes for v5:
>> 	- Rebase on the last update of the tree (conflicts solved)
>> Changes for v6:
>> 	- Remove useless switch case
>> 	- Update board_f to not depend on mp.h unnecessary
>> 	- Fix build warnings
>> 	- Update commit message
>>

<snip>

>> --- a/common/board_f.c
>> +++ b/common/board_f.c
>> @@ -34,6 +34,9 @@
>>  #ifdef CONFIG_MPC5xxx
>>  #include <mpc5xxx.h>
>>  #endif
>> +#if (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
>> +#include <asm/mp.h>
>> +#endif
>>  
>>  #include <os.h>
>>  #include <post.h>
>> @@ -43,9 +46,6 @@
>>  #include <watchdog.h>
>>  #include <asm/errno.h>
>>  #include <asm/io.h>
>> -#ifdef CONFIG_MP
>> -#include <asm/mp.h>
>> -#endif
>>  #include <asm/sections.h>
>>  #ifdef CONFIG_X86
>>  #include <asm/init_helpers.h>
>> @@ -381,7 +381,7 @@ static int setup_dest_addr(void)
>>  	gd->ram_top = board_get_usable_ram_top(gd->mon_len);
>>  	gd->relocaddr = gd->ram_top;
>>  	debug("Ram top: %08lX\n", (ulong)gd->ram_top);
>> -#if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
>> +#if (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))

I didn't notice this patch until it got merged. Why dropping CONFIG_MP here?
This change breaks these boards

 MPC8536DS MPC8536DS_36BIT MPC8536DS_SDCARD MPC8536DS_SPIFLASH qemu-ppce500

York