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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2020 Western Digital Corporation or its affiliates.
* Copyright (C) 2020 Google, Inc
*/
#ifndef _ASM_RISCV_SOC_H
#define _ASM_RISCV_SOC_H
#include <linux/of.h>
#include <linux/linkage.h>
#include <linux/types.h>
#define SOC_EARLY_INIT_DECLARE(name, compat, fn) \
static const struct of_device_id __soc_early_init__##name \
__used __section("__soc_early_init_table") \
= { .compatible = compat, .data = fn }
void soc_early_init(void);
extern unsigned long __soc_early_init_table_start;
extern unsigned long __soc_early_init_table_end;
/*
* Allows Linux to provide a device tree, which is necessary for SOCs that
* don't provide a useful one on their own.
*/
struct soc_builtin_dtb {
unsigned long vendor_id;
unsigned long arch_id;
unsigned long imp_id;
void *(*dtb_func)(void);
};
/*
* The argument name must specify a valid DTS file name without the dts
* extension.
*/
#define SOC_BUILTIN_DTB_DECLARE(name, vendor, arch, impl) \
extern void *__dtb_##name##_begin; \
\
static __init __used \
void *__soc_builtin_dtb_f__##name(void) \
{ \
return (void *)&__dtb_##name##_begin; \
} \
\
static const struct soc_builtin_dtb __soc_builtin_dtb__##name \
__used __section("__soc_builtin_dtb_table") = \
{ \
.vendor_id = vendor, \
.arch_id = arch, \
.imp_id = impl, \
.dtb_func = __soc_builtin_dtb_f__##name, \
}
extern unsigned long __soc_builtin_dtb_table_start;
extern unsigned long __soc_builtin_dtb_table_end;
void *soc_lookup_builtin_dtb(void);
#endif
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