diff options
| -rw-r--r-- | hw/loongarch/fw_cfg.c | 33 | ||||
| -rw-r--r-- | hw/loongarch/fw_cfg.h | 15 | ||||
| -rw-r--r-- | hw/loongarch/loongson3.c | 41 | ||||
| -rw-r--r-- | hw/loongarch/meson.build | 3 | ||||
| -rw-r--r-- | include/hw/loongarch/virt.h | 3 |
5 files changed, 94 insertions, 1 deletions
diff --git a/hw/loongarch/fw_cfg.c b/hw/loongarch/fw_cfg.c new file mode 100644 index 0000000..f6503d5 --- /dev/null +++ b/hw/loongarch/fw_cfg.c @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU fw_cfg helpers (LoongArch specific) + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "hw/loongarch/fw_cfg.h" +#include "hw/loongarch/virt.h" +#include "hw/nvram/fw_cfg.h" +#include "sysemu/sysemu.h" + +static void fw_cfg_boot_set(void *opaque, const char *boot_device, + Error **errp) +{ + fw_cfg_modify_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]); +} + +FWCfgState *loongarch_fw_cfg_init(ram_addr_t ram_size, MachineState *ms) +{ + FWCfgState *fw_cfg; + 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_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); + + qemu_register_boot_set(fw_cfg_boot_set, fw_cfg); + return fw_cfg; +} diff --git a/hw/loongarch/fw_cfg.h b/hw/loongarch/fw_cfg.h new file mode 100644 index 0000000..7c0de4d --- /dev/null +++ b/hw/loongarch/fw_cfg.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU fw_cfg helpers (LoongArch specific) + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#ifndef HW_LOONGARCH_FW_CFG_H +#define HW_LOONGARCH_FW_CFG_H + +#include "hw/boards.h" +#include "hw/nvram/fw_cfg.h" + +FWCfgState *loongarch_fw_cfg_init(ram_addr_t ram_size, MachineState *ms); +#endif diff --git a/hw/loongarch/loongson3.c b/hw/loongarch/loongson3.c index 15fddfc..9ee7450 100644 --- a/hw/loongarch/loongson3.c +++ b/hw/loongarch/loongson3.c @@ -28,13 +28,40 @@ #include "hw/pci-host/ls7a.h" #include "hw/pci-host/gpex.h" #include "hw/misc/unimp.h" - +#include "hw/loongarch/fw_cfg.h" #include "target/loongarch/cpu.h" #define PM_BASE 0x10080000 #define PM_SIZE 0x100 #define PM_CTRL 0x10 +struct memmap_entry { + uint64_t address; + uint64_t length; + uint32_t type; + uint32_t reserved; +}; + +static struct memmap_entry *memmap_table; +static unsigned memmap_entries; + +static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type) +{ + /* Ensure there are no duplicate entries. */ + for (unsigned i = 0; i < memmap_entries; i++) { + assert(memmap_table[i].address != address); + } + + memmap_table = g_renew(struct memmap_entry, memmap_table, + memmap_entries + 1); + memmap_table[memmap_entries].address = cpu_to_le64(address); + memmap_table[memmap_entries].length = cpu_to_le64(length); + memmap_table[memmap_entries].type = cpu_to_le32(type); + memmap_table[memmap_entries].reserved = 0; + memmap_entries++; +} + + /* * This is a placeholder for missing ACPI, * and will eventually be replaced. @@ -331,15 +358,27 @@ static void loongarch_init(MachineState *machine) machine->ram, 0, 256 * MiB); memory_region_add_subregion(address_space_mem, offset, &lams->lowmem); offset += 256 * MiB; + memmap_add_entry(0, 256 * MiB, 1); highram_size = ram_size - 256 * MiB; memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem", machine->ram, offset, highram_size); memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem); + memmap_add_entry(0x90000000, highram_size, 1); /* Add isa io region */ memory_region_init_alias(&lams->isa_io, NULL, "isa-io", get_system_io(), 0, LOONGARCH_ISA_IO_SIZE); memory_region_add_subregion(address_space_mem, LOONGARCH_ISA_IO_BASE, &lams->isa_io); + /* fw_cfg init */ + lams->fw_cfg = loongarch_fw_cfg_init(ram_size, machine); + rom_set_fw(lams->fw_cfg); + + if (lams->fw_cfg != NULL) { + fw_cfg_add_file(lams->fw_cfg, "etc/memmap", + memmap_table, + sizeof(struct memmap_entry) * (memmap_entries)); + } + if (kernel_filename) { loaderparams.ram_size = ram_size; loaderparams.kernel_filename = kernel_filename; diff --git a/hw/loongarch/meson.build b/hw/loongarch/meson.build index cecb1a5..81131c9 100644 --- a/hw/loongarch/meson.build +++ b/hw/loongarch/meson.build @@ -1,4 +1,7 @@ loongarch_ss = ss.source_set() +loongarch_ss.add(files( + 'fw_cfg.c', +)) loongarch_ss.add(when: 'CONFIG_LOONGARCH_VIRT', if_true: files('loongson3.c')) hw_arch += {'loongarch': loongarch_ss} diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index 09a8161..9fec1f8 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -17,6 +17,7 @@ #define LOONGARCH_ISA_IO_BASE 0x18000000UL #define LOONGARCH_ISA_IO_SIZE 0x0004000 +#define VIRT_FWCFG_BASE 0x1e020000UL struct LoongArchMachineState { /*< private >*/ @@ -26,6 +27,8 @@ struct LoongArchMachineState { MemoryRegion lowmem; MemoryRegion highmem; MemoryRegion isa_io; + /* State for other subsystems/APIs: */ + FWCfgState *fw_cfg; }; #define TYPE_LOONGARCH_MACHINE MACHINE_TYPE_NAME("virt") |