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arm64: kdump: Remove custom linux,usable-memory-range handling

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Remove the architecture-specific code for handling the
"linux,usable-memory-range" property under the "/chosen" node in DT, as
the platform-agnostic FDT core code already takes care of this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/7356c531c49a24b4a55577bf8e46d93f4d8ae460.1628670468.git.geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven 2021-08-11 10:51:06 +02:00 committed by Rob Herring
parent 57beb9bd18
commit b261dba2fd
1 changed files with 0 additions and 35 deletions
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35
arch/arm64/mm/init.c
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@ -197,45 +197,10 @@ static int __init early_mem(char *p)
}
early_param("mem", early_mem);
static int __init early_init_dt_scan_usablemem(unsigned long node,
const char *uname, int depth, void *data)
{
struct memblock_region *usablemem = data;
const __be32 *reg;
int len;
if (depth != 1 || strcmp(uname, "chosen") != 0)
return 0;
reg = of_get_flat_dt_prop(node, "linux,usable-memory-range", &len);
if (!reg || (len < (dt_root_addr_cells + dt_root_size_cells)))
return 1;
usablemem->base = dt_mem_next_cell(dt_root_addr_cells, &reg);
usablemem->size = dt_mem_next_cell(dt_root_size_cells, &reg);
return 1;
}
static void __init fdt_enforce_memory_region(void)
{
struct memblock_region reg = {
.size = 0,
};
of_scan_flat_dt(early_init_dt_scan_usablemem, &reg);
if (reg.size)
memblock_cap_memory_range(reg.base, reg.size);
}
void __init arm64_memblock_init(void)
{
const s64 linear_region_size = PAGE_END - _PAGE_OFFSET(vabits_actual);
/* Handle linux,usable-memory-range property */
fdt_enforce_memory_region();
/* Remove memory above our supported physical address size */
memblock_remove(1ULL << PHYS_MASK_SHIFT, ULLONG_MAX);