motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 01:33:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

hw/mips/loongson3_virt: Emulate suspend function

Browse source 
Suspend function is emulated as what hardware actually do.
Doorbell register fields are updates to include suspend value,
suspend vector is encoded in firmware blob and fw_cfg is updated
to include S3 bits as what x86 did.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-ID: <20240508-loongson3v-suspend-v1-1-186725524a39@flygoat.com>
[PMD: Use g_memdup2(), constify suspend array]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Jiaxun Yang 2024-05-08 10:31:09 +01:00 • committed by Philippe Mathieu-Daudé
parent d804ad98f5
commit 5b1a3b9f8c
2 changed files with 21 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
hw/mips/loongson3_bootp.c
View file

@ -148,4 +148,5 @@ void init_reset_system(struct efi_reset_system_t *reset)
reset->Shutdown = cpu_to_le64(0xffffffffbfc000a8); reset->Shutdown = cpu_to_le64(0xffffffffbfc000a8);
reset->ResetCold = cpu_to_le64(0xffffffffbfc00080); reset->ResetCold = cpu_to_le64(0xffffffffbfc00080);
reset->ResetWarm = cpu_to_le64(0xffffffffbfc00080); reset->ResetWarm = cpu_to_le64(0xffffffffbfc00080);
reset->DoSuspend = cpu_to_le64(0xffffffffbfc000d0);
} }

20
hw/mips/loongson3_virt.c
View file

@ -127,6 +127,9 @@ static void loongson3_pm_write(void *opaque, hwaddr addr,
case 0x00: case 0x00:
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
return; return;
case 0x01:
qemu_system_suspend_request();
return;
case 0xff: case 0xff:
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
return; return;
@ -250,6 +253,17 @@ static void init_boot_rom(void)
0x240D00FF, /* li t1, 0xff */ 0x240D00FF, /* li t1, 0xff */
0xA18D0000, /* sb t1, (t0) */ 0xA18D0000, /* sb t1, (t0) */
0x1000FFFF, /* 1: b 1b */ 0x1000FFFF, /* 1: b 1b */
0x00000000, /* nop */
/* Suspend */
0x3C0C9000, /* dli t0, 0x9000000010080010 */
0x358C0000,
0x000C6438,
0x358C1008,
0x000C6438,
0x358C0010,
0x240D0001, /* li t1, 0x01 */
0xA18D0000, /* sb t1, (t0) */
0x03e00008, /* jr ra */
0x00000000 /* nop */ 0x00000000 /* nop */
}; };
@ -265,6 +279,7 @@ static void fw_cfg_boot_set(void *opaque, const char *boot_device,
static void fw_conf_init(unsigned long ram_size) static void fw_conf_init(unsigned long ram_size)
{ {
static const uint8_t suspend[6] = {128, 0, 0, 129, 128, 128};
FWCfgState *fw_cfg; FWCfgState *fw_cfg;
hwaddr cfg_addr = virt_memmap[VIRT_FW_CFG].base; hwaddr cfg_addr = virt_memmap[VIRT_FW_CFG].base;
@ -274,6 +289,10 @@ static void fw_conf_init(unsigned long ram_size)
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_i32(fw_cfg, FW_CFG_MACHINE_VERSION, 1); fw_cfg_add_i32(fw_cfg, FW_CFG_MACHINE_VERSION, 1);
fw_cfg_add_i64(fw_cfg, FW_CFG_CPU_FREQ, get_cpu_freq_hz()); fw_cfg_add_i64(fw_cfg, FW_CFG_CPU_FREQ, get_cpu_freq_hz());
fw_cfg_add_file(fw_cfg, "etc/system-states",
g_memdup2(suspend, sizeof(suspend)), sizeof(suspend));
qemu_register_boot_set(fw_cfg_boot_set, fw_cfg); qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
} }
@ -553,6 +572,7 @@ static void mips_loongson3_virt_init(MachineState *machine)
machine->ram, 0, virt_memmap[VIRT_LOWMEM].size); machine->ram, 0, virt_memmap[VIRT_LOWMEM].size);
memory_region_init_io(iomem, NULL, &loongson3_pm_ops, memory_region_init_io(iomem, NULL, &loongson3_pm_ops,
NULL, "loongson3_pm", virt_memmap[VIRT_PM].size); NULL, "loongson3_pm", virt_memmap[VIRT_PM].size);
qemu_register_wakeup_support();
memory_region_add_subregion(address_space_mem, memory_region_add_subregion(address_space_mem,
virt_memmap[VIRT_LOWMEM].base, ram); virt_memmap[VIRT_LOWMEM].base, ram);