[U-Boot] [PATCH v2 1/3] spl: add RAM boot device only if it is actually defined

[Stefan Agner <stefan@agner.ch>]

On 2016-11-14 12:44, Simon Glass wrote:
> Hi Stefan,
> 
> On 12 November 2016 at 12:13, Stefan Agner <stefan@agner.ch> wrote:
>> From: Stefan Agner <stefan.agner@toradex.com>
>>
>> Some devices (e.g. dra7xx) support loading to RAM using DFU without
>> having direct boot from RAM support. Make sure the linker list
>> does not contain BOOT_DEVICE_RAM if CONFIG_SPL_RAM_SUPPORT is not
>> enabled.
>>
>> Fixes: 98136b2f26fa ("spl: Convert spl_ram_load_image() to use linker list")
>>
>> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
>> ---
>>
>> Changes in v2:
>> - Use CONFIG_SPL_RAM_SUPPORT to descide whether to compile the
>>   function in first place.
>>
>>  common/spl/spl.c | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> Instead of this, how about moving it into its own file and putting
> that condition in the Makefile?

Generally a good idea.

What I don't like to much that we have two orthogonal config options
using that same function...

We probably should have something like:

CONFIG_SPL_RAM_SUPPORT
CONFIG_SPL_RAM_ONLY_SUPPORT depends on CONFIG_SPL_RAM_SUPPORT
CONFIG_SPL_DFU_SUPPORT depends on CONFIG_SPL_RAM_SUPPORT

Then we could use a single config option (CONFIG_SPL_RAM_SUPPORT) for
the new file.

However, that is beyond bug fixing, and I'd rather prefer to have it in
a separate patch, what do you think?

--
Stefan