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lib/utils: fdt: Update FDT expand size to 1024 for reserved memory node

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Currently 256 bytes is used for the FDT expand size when fixing up
reserved memory node. Increase it to 1024 bytes with an estimated
size of 64 bytes per PMP memory region by 16 regions in total.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Bin Meng
2020-06-25 02:36:39 -07:00
committed by Anup Patel
parent 7d61a68775
commit a5f9104330
1 changed files with 8 additions and 2 deletions
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10
lib/utils/fdt/fdt_fixup.c
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@@ -151,8 +151,14 @@ int fdt_reserved_memory_fixup(void *fdt)
int na = fdt_address_cells(fdt, 0);
int ns = fdt_size_cells(fdt, 0);
/* expand the device tree to accommodate new node */
err = fdt_open_into(fdt, fdt, fdt_totalsize(fdt) + 256);
/*
* Expand the device tree to accommodate new node
* by the following estimated size:
*
* Each PMP memory region entry occupies 64 bytes.
* With 16 PMP memory regions we need 64 * 16 = 1024 bytes.
*/
err = fdt_open_into(fdt, fdt, fdt_totalsize(fdt) + 1024);
if (err < 0)
return err;