[U-Boot] [PATCH 2/2] arm: lpc32xx: switch SPL builds to driver model

[Simon Glass]

Hi Vladimir,

On 12 December 2015 at 17:48, Vladimir Zapolskiy <vz at mleia.com> wrote:
> For NXP LPC32xx boards the change enables SPL_DM option, this allows
> to use any driver model UART driver in SPL images, hence a restriction
> on HSUART in SPL image is removed and well as definitions for non-DM
> NS16550 driver, its DM version is used instead.
>
> Note, CONFIG_SPL_DM option noticeably increases SPL image, if just
> NAND SLC and DM version of NS16650 are included to the image, the size
> of SPL image is increased almost in two times from 10672 bytes to
> 19704 bytes.
> If SPL image is downloaded from a small page NAND device, then this
> can cause a problem, according to the LPC32xx User's Manual the
> maximum size of a secondary bootloader stored on small page NAND flash
> should not exceed 15.5KB (maximum size of a secondary bootloader on a
> large page NAND is 54KB).
>
> Because SPL_DM requires malloc(), enable CONFIG_SYS_MALLOC_SIMPLE for
> all LPC32xx boards in shared config.h file.
>
> Signed-off-by: Vladimir Zapolskiy <vz at mleia.com>
> ---
>  arch/arm/cpu/arm926ejs/lpc32xx/devices.c   |  2 +-
>  arch/arm/include/asm/arch-lpc32xx/config.h | 24 ++++++------------------
>  configs/devkit3250_defconfig               |  1 +
>  configs/work_92105_defconfig               |  1 +
>  4 files changed, 9 insertions(+), 19 deletions(-)

You are bringing in the full malloc(). Try adding:

CONFIG_SPL_SYS_MALLOC_SIMPLE=y

to your defconfig. The should cut the size increment to just under
5KB. That is still a lot. Are you able to use Thumb on your board?

Regards,
Simon