3280aa7df2
Change-Id: Iabe390963bcbeb9ec6016faa8312d101431942da Signed-off-by: Xiang Wang <wxjstz@126.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31976 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Hug <philipp@hug.cx>
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2013 The ChromiumOS Authors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _MCALL_H
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#define _MCALL_H
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// NOTE: this is the size of hls_t below. A static_assert would be
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// nice to have.
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#if __riscv_xlen == 64
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#define HLS_SIZE 88
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#endif
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#if __riscv_xlen == 32
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#define HLS_SIZE 52
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#endif
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/* We save 37 registers, currently. */
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#define MENTRY_FRAME_SIZE (HLS_SIZE + 37 * __SIZEOF_POINTER__)
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#ifndef __ASSEMBLER__
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#include <arch/encoding.h>
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#include <arch/smp/atomic.h>
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#include <stdint.h>
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typedef struct {
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unsigned long dev;
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unsigned long cmd;
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unsigned long data;
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unsigned long sbi_private_data;
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} sbi_device_message;
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struct blocker {
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void *arg;
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void (*fn)(void *arg);
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atomic_t sync_a;
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atomic_t sync_b;
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};
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typedef struct {
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sbi_device_message *device_request_queue_head;
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unsigned long device_request_queue_size;
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sbi_device_message *device_response_queue_head;
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sbi_device_message *device_response_queue_tail;
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int hart_id;
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int ipi_pending;
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uint64_t *timecmp;
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uint64_t *time;
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void *fdt;
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struct blocker entry;
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} hls_t;
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_Static_assert(
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sizeof(hls_t) == HLS_SIZE,
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"HLS_SIZE must equal to sizeof(hls_t)");
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#define MACHINE_STACK_TOP() ({ \
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/* coverity[uninit_use] : FALSE */ \
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register uintptr_t sp asm ("sp"); \
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(void*)((sp + RISCV_PGSIZE) & -RISCV_PGSIZE); })
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// hart-local storage, at top of stack
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#define HLS() ((hls_t*)(MACHINE_STACK_TOP() - HLS_SIZE))
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#define OTHER_HLS(id) ((hls_t*)((void*)HLS() + RISCV_PGSIZE * ((id) - HLS()->hart_id)))
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#define MACHINE_STACK_SIZE RISCV_PGSIZE
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// need to call this before launching linux
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void hls_init(uint32_t hart_id, void *fdt);
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/* This function is used to initialize HLS()->time/HLS()->timecmp */
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void mtime_init(void);
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/*
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* This function needs be implement by SoC code.
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* Although the privileged instruction set defines that MSIP will be
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* memory-mapped, but does not define how to map. SoC can be implemented as
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* a bit, a byte, a word, and so on.
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* So we can't provide code that is related to implementation.
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*/
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void set_msip(int hartid, int val);
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#endif // __ASSEMBLER__
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#endif
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