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hw/loongarch: Support fw_cfg dma function 

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>
This commit is contained in:
Xiaojuan Yang 2022-08-10 16:53:36 +08:00 committed by Song Gao
parent 3ff17902c4
commit feae45dc42
No known key found for this signature in database
GPG Key ID: 40A2FFF239263EDF
3 changed files with 4 additions and 2 deletions
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1
hw/loongarch/Kconfig
View File

@ -16,3 +16,4 @@ config LOONGARCH_VIRT
select SMBIOS
select ACPI_PCI
select ACPI_HW_REDUCED
select FW_CFG_DMA

3
hw/loongarch/fw_cfg.c
View File

@ -23,7 +23,8 @@ FWCfgState *loongarch_fw_cfg_init(ram_addr_t ram_size, MachineState *ms)
int max_cpus = ms->smp.max_cpus;
int smp_cpus = ms->smp.cpus;
fw_cfg = fw_cfg_init_mem_wide(VIRT_FWCFG_BASE + 8, VIRT_FWCFG_BASE, 8, 0, NULL);
fw_cfg = fw_cfg_init_mem_wide(VIRT_FWCFG_BASE + 8, VIRT_FWCFG_BASE, 8,
VIRT_FWCFG_BASE + 16, &address_space_memory);
fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);

2
hw/loongarch/virt.c
View File

@ -118,7 +118,7 @@ static void fdt_add_fw_cfg_node(const LoongArchMachineState *lams)
qemu_fdt_setprop_string(ms->fdt, nodename,
"compatible", "qemu,fw-cfg-mmio");
qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
2, base, 2, 0x8);
2, base, 2, 0x18);
qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0);
g_free(nodename);
}