1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2020 Western Digital Corporation or its affiliates. 4*4882a593Smuzhiyun * Copyright (C) 2020 Google, Inc 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #ifndef _ASM_RISCV_SOC_H 8*4882a593Smuzhiyun #define _ASM_RISCV_SOC_H 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/of.h> 11*4882a593Smuzhiyun #include <linux/linkage.h> 12*4882a593Smuzhiyun #include <linux/types.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #define SOC_EARLY_INIT_DECLARE(name, compat, fn) \ 15*4882a593Smuzhiyun static const struct of_device_id __soc_early_init__##name \ 16*4882a593Smuzhiyun __used __section("__soc_early_init_table") \ 17*4882a593Smuzhiyun = { .compatible = compat, .data = fn } 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun void soc_early_init(void); 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun extern unsigned long __soc_early_init_table_start; 22*4882a593Smuzhiyun extern unsigned long __soc_early_init_table_end; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /* 25*4882a593Smuzhiyun * Allows Linux to provide a device tree, which is necessary for SOCs that 26*4882a593Smuzhiyun * don't provide a useful one on their own. 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun struct soc_builtin_dtb { 29*4882a593Smuzhiyun unsigned long vendor_id; 30*4882a593Smuzhiyun unsigned long arch_id; 31*4882a593Smuzhiyun unsigned long imp_id; 32*4882a593Smuzhiyun void *(*dtb_func)(void); 33*4882a593Smuzhiyun }; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun /* 36*4882a593Smuzhiyun * The argument name must specify a valid DTS file name without the dts 37*4882a593Smuzhiyun * extension. 38*4882a593Smuzhiyun */ 39*4882a593Smuzhiyun #define SOC_BUILTIN_DTB_DECLARE(name, vendor, arch, impl) \ 40*4882a593Smuzhiyun extern void *__dtb_##name##_begin; \ 41*4882a593Smuzhiyun \ 42*4882a593Smuzhiyun static __init __used \ 43*4882a593Smuzhiyun void *__soc_builtin_dtb_f__##name(void) \ 44*4882a593Smuzhiyun { \ 45*4882a593Smuzhiyun return (void *)&__dtb_##name##_begin; \ 46*4882a593Smuzhiyun } \ 47*4882a593Smuzhiyun \ 48*4882a593Smuzhiyun static const struct soc_builtin_dtb __soc_builtin_dtb__##name \ 49*4882a593Smuzhiyun __used __section("__soc_builtin_dtb_table") = \ 50*4882a593Smuzhiyun { \ 51*4882a593Smuzhiyun .vendor_id = vendor, \ 52*4882a593Smuzhiyun .arch_id = arch, \ 53*4882a593Smuzhiyun .imp_id = impl, \ 54*4882a593Smuzhiyun .dtb_func = __soc_builtin_dtb_f__##name, \ 55*4882a593Smuzhiyun } 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun extern unsigned long __soc_builtin_dtb_table_start; 58*4882a593Smuzhiyun extern unsigned long __soc_builtin_dtb_table_end; 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun void *soc_lookup_builtin_dtb(void); 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun #endif 63