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microblaze: Add support for reserved memory defined by DT

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In DT reserved memory nodes can be added as is described by
Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
but Microblaze didn't have a support for it. The similar change was done
for ARC by commit 1b10cb21d8 ("ARC: add support for reserved memory
defined by device tree"). It is pretty much enough to call
early_init_fdt_scan_reserved_mem().
Microblaze is not using initial_boot_params that's why there is no need to
call early_init_fdt_reserve_self().

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/da4395776bf0de7207767abcc8a5df05bf411816.1645795048.git.michal.simek@xilinx.com
This commit is contained in:
Michal Simek 2022-02-25 14:17:31 +01:00
parent e4c70fc695
commit 68cbfae83a
1 changed files with 3 additions and 0 deletions
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3
arch/microblaze/mm/init.c
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@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/mm.h> /* mem_init */
#include <linux/initrd.h>
#include <linux/of_fdt.h>
#include <linux/pagemap.h>
#include <linux/pfn.h>
#include <linux/slab.h>
@ -261,6 +262,8 @@ asmlinkage void __init mmu_init(void)
parse_early_param();
early_init_fdt_scan_reserved_mem();
/* CMA initialization */
dma_contiguous_reserve(memory_start + lowmem_size - 1);