[PATCH v2 7/8] lmb: Add 2 config to define the max number of regions

[Tom Rini]

On Wed, Mar 10, 2021 at 10:16:31AM +0100, Patrick Delaunay wrote:

> Add 2 configs CONFIG_LMB_MEMORY_REGIONS and CONFIG_LMB_RESERVED_REGIONS
> to change independently the max number of the regions in lmb
> library.
> 
> When CONFIG_LMB_USE_MAX_REGIONS=y, move the lmb property arrays to
> struct lmb and manage the array size with the element 'max' of struct
> lmb_region; their are still allocated in stack.
> 
> When CONFIG_LMB_USE_MAX_REGIONS=n, keep the current location in
> struct lmb_region to allow compiler optimization.
> 
> Increase CONFIG_LMB_RESERVED_REGIONS is useful to avoid lmb errors in
> bootm when the number of reserved regions (not adjacent) is reached:
> + 1 region for relocated U-Boot
> + 1 region for initrd
> + 1 region for relocated linux device tree
> + reserved memory regions present in Linux device tree.
> 
> The current limit of 8 regions is reached with only 5 reserved regions
> in DT.
> 
> see Linux kernel commit bf23c51f1f49 ("memblock: Move memblock arrays
> to static storage in memblock.c and make their size a variable")
> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>

Applied to u-boot/master, thanks!

-- 
Tom
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