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// SPDX-License-Identifier: GPL-2.0-only
#include <asm/csr.h>
#include <linux/processor.h>
#include "pi.h"
/*
* To avoid rewriting code include asm/archrandom.h and create macros
* for the functions that won't be included.
*/
#undef riscv_has_extension_unlikely
#define riscv_has_extension_likely(...) false
#undef pr_err_once
#define pr_err_once(...)
#include <asm/archrandom.h>
u64 get_kaslr_seed_zkr(const uintptr_t dtb_pa)
{
unsigned long seed = 0;
if (!fdt_early_match_extension_isa((const void *)dtb_pa, "zkr"))
return 0;
if (!csr_seed_long(&seed))
return 0;
return seed;
}
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