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feae45dc42
Support fw_cfg dma function for LoongArch virt machine. Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Acked-by: Song Gao <gaosong@loongson.cn> Message-Id: <20220908094623.73051-3-yangxiaojuan@loongson.cn> Signed-off-by: Song Gao <gaosong@loongson.cn>
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* QEMU fw_cfg helpers (LoongArch specific)
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*
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* Copyright (C) 2021 Loongson Technology Corporation Limited
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*/
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#include "qemu/osdep.h"
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#include "hw/loongarch/fw_cfg.h"
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#include "hw/loongarch/virt.h"
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#include "hw/nvram/fw_cfg.h"
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#include "sysemu/sysemu.h"
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static void fw_cfg_boot_set(void *opaque, const char *boot_device,
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Error **errp)
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{
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fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
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}
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FWCfgState *loongarch_fw_cfg_init(ram_addr_t ram_size, MachineState *ms)
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{
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FWCfgState *fw_cfg;
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int max_cpus = ms->smp.max_cpus;
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int smp_cpus = ms->smp.cpus;
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fw_cfg = fw_cfg_init_mem_wide(VIRT_FWCFG_BASE + 8, VIRT_FWCFG_BASE, 8,
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VIRT_FWCFG_BASE + 16, &address_space_memory);
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fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
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fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
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fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
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qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
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return fw_cfg;
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}
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