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hw/loongarch: Move boot functions to boot.c
Move some boot functions to boot.c and struct loongarch_boot_info into struct LoongArchMachineState. Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Bibo Mao <maobibo@loongson.cn> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20240426091551.2397867-2-gaosong@loongson.cn>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| /* SPDX-License-Identifier: GPL-2.0-or-later */ | ||
| /* | ||
| * LoongArch boot helper functions. | ||
| * | ||
| * Copyright (c) 2023 Loongson Technology Corporation Limited | ||
| */ | ||
|
|
||
| #include "qemu/osdep.h" | ||
| #include "qemu/units.h" | ||
| #include "target/loongarch/cpu.h" | ||
| #include "hw/loongarch/virt.h" | ||
| #include "hw/loader.h" | ||
| #include "elf.h" | ||
| #include "qemu/error-report.h" | ||
| #include "sysemu/reset.h" | ||
| #include "sysemu/qtest.h" | ||
|
|
||
| static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) | ||
| { | ||
| return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS); | ||
| } | ||
|
|
||
| static int64_t load_kernel_info(struct loongarch_boot_info *info) | ||
| { | ||
| uint64_t kernel_entry, kernel_low, kernel_high; | ||
| ssize_t kernel_size; | ||
|
|
||
| kernel_size = load_elf(info->kernel_filename, NULL, | ||
| cpu_loongarch_virt_to_phys, NULL, | ||
| &kernel_entry, &kernel_low, | ||
| &kernel_high, NULL, 0, | ||
| EM_LOONGARCH, 1, 0); | ||
|
|
||
| if (kernel_size < 0) { | ||
| error_report("could not load kernel '%s': %s", | ||
| info->kernel_filename, | ||
| load_elf_strerror(kernel_size)); | ||
| exit(1); | ||
| } | ||
| return kernel_entry; | ||
| } | ||
|
|
||
| static void reset_load_elf(void *opaque) | ||
| { | ||
| LoongArchCPU *cpu = opaque; | ||
| CPULoongArchState *env = &cpu->env; | ||
|
|
||
| cpu_reset(CPU(cpu)); | ||
| if (env->load_elf) { | ||
| cpu_set_pc(CPU(cpu), env->elf_address); | ||
| } | ||
| } | ||
|
|
||
| static void fw_cfg_add_kernel_info(struct loongarch_boot_info *info, | ||
| FWCfgState *fw_cfg) | ||
| { | ||
| /* | ||
| * Expose the kernel, the command line, and the initrd in fw_cfg. | ||
| * We don't process them here at all, it's all left to the | ||
| * firmware. | ||
| */ | ||
| load_image_to_fw_cfg(fw_cfg, | ||
| FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA, | ||
| info->kernel_filename, | ||
| false); | ||
|
|
||
| if (info->initrd_filename) { | ||
| load_image_to_fw_cfg(fw_cfg, | ||
| FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA, | ||
| info->initrd_filename, false); | ||
| } | ||
|
|
||
| if (info->kernel_cmdline) { | ||
| fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, | ||
| strlen(info->kernel_cmdline) + 1); | ||
| fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, | ||
| info->kernel_cmdline); | ||
| } | ||
| } | ||
|
|
||
| static void loongarch_firmware_boot(LoongArchMachineState *lams, | ||
| struct loongarch_boot_info *info) | ||
| { | ||
| fw_cfg_add_kernel_info(info, lams->fw_cfg); | ||
| } | ||
|
|
||
| static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info) | ||
| { | ||
| int64_t kernel_addr = 0; | ||
| LoongArchCPU *lacpu; | ||
| CPUState *cs; | ||
|
|
||
| if (info->kernel_filename) { | ||
| kernel_addr = load_kernel_info(info); | ||
| } else { | ||
| if(!qtest_enabled()) { | ||
| error_report("Need kernel filename\n"); | ||
| exit(1); | ||
| } | ||
| } | ||
|
|
||
| CPU_FOREACH(cs) { | ||
| lacpu = LOONGARCH_CPU(cs); | ||
| lacpu->env.load_elf = true; | ||
| lacpu->env.elf_address = kernel_addr; | ||
| } | ||
| } | ||
|
|
||
| void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info) | ||
| { | ||
| LoongArchMachineState *lams = LOONGARCH_MACHINE(ms); | ||
| int i; | ||
|
|
||
| /* register reset function */ | ||
| for (i = 0; i < ms->smp.cpus; i++) { | ||
| qemu_register_reset(reset_load_elf, LOONGARCH_CPU(qemu_get_cpu(i))); | ||
| } | ||
|
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| info->kernel_filename = ms->kernel_filename; | ||
| info->kernel_cmdline = ms->kernel_cmdline; | ||
| info->initrd_filename = ms->initrd_filename; | ||
|
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||
| if (lams->bios_loaded) { | ||
| loongarch_firmware_boot(lams, info); | ||
| } else { | ||
| loongarch_direct_kernel_boot(info); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| /* SPDX-License-Identifier: GPL-2.0-or-later */ | ||
| /* | ||
| * Definitions for LoongArch boot. | ||
| * | ||
| * Copyright (C) 2023 Loongson Technology Corporation Limited | ||
| */ | ||
|
|
||
| #ifndef HW_LOONGARCH_BOOT_H | ||
| #define HW_LOONGARCH_BOOT_H | ||
|
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||
| struct loongarch_boot_info { | ||
| uint64_t ram_size; | ||
| const char *kernel_filename; | ||
| const char *kernel_cmdline; | ||
| const char *initrd_filename; | ||
| uint64_t a0, a1, a2; | ||
| }; | ||
|
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| void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info); | ||
|
|
||
| #endif /* HW_LOONGARCH_BOOT_H */ |
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