[U-Boot] [PATCH 00/27] spl: Use linker list and parameters for SPL image loading

[Simon Glass]

Hi,
On 18 September 2016 at 13:44, Simon Glass <sjg at chromium.org> wrote:
> At present the SPL code uses a global spl_image variable which is shared
> amongst lots of files, some in common/spl and some elsewhere. There is no
> need for this to be global, and in fact a parameter makes it easier to
> understand what information the functions act on. It also reduces the BSS
> use in the SPL (at the expense of stack) which is useful on boards which
> don't have BSS available early on.
>
> There are many global functions for loading images from each boot device
> type, like spl_mmc_load_image() and spl_spi_load_image(). Mostly these take
> the same parameters (none or a u32). There are various rules for compiling
> in calls to these functions and in some cases somewhat different rules for
> compiling in the functions themselves. For example, spl_spi_load_image() is
> called if either of CONFIG_SPL_SPI_SUPPORT or CONFIG_SPL_SPI__FLASHSUPPORT
> is enabled, but included in the image if CONFIG_SPL_SPI_LOAD is enabled.

Unfortunately there is a missing memset() in this series which can
cause booting to fail because the spl_image flags can be non-zero.

I'll send v2 after allowing time for more comments, but in the
meantime if you want to test it, see u-boot-dm/spl-working.

Regards,
Simon