| Message ID | 20231218090059.2678224-4-gaosong@loongson.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add boot LoongArch elf kernel with FDT | expand |
On 2023/12/18 下午5:00, Song Gao wrote: > Add init_cmline and set boot_info->a0, a1 > > Signed-off-by: Song Gao <gaosong@loongson.cn> > --- > hw/loongarch/boot.c | 21 +++++++++++++++++++++ > include/hw/loongarch/virt.h | 2 ++ > target/loongarch/cpu.h | 2 ++ > 3 files changed, 25 insertions(+) > > diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c > index 2be6dfb037..4bfe24274a 100644 > --- a/hw/loongarch/boot.c > +++ b/hw/loongarch/boot.c > @@ -14,6 +14,20 @@ > #include "qemu/error-report.h" > #include "sysemu/reset.h" > > +static int init_cmdline(struct loongarch_boot_info *info) > +{ > + hwaddr cmdline_addr; > + cmdline_addr = 0xff00000ULL; > + > + pstrcpy_targphys("cmdline", 0xff00000ULL, > + COMMAND_LINE_SIZE, info->kernel_cmdline); There are two places using 0xff00000ULL here, it had better be defined as macro. Also can address for cmdline be before FDT base address(0x100000) rather than strange value 0xff00000 ? -:) > + > + info->a0 = 1; > + info->a1 = cmdline_addr; > + > + return 0; > +} > + > static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) > { > return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS); > @@ -63,6 +77,8 @@ static int64_t load_kernel_info(struct loongarch_boot_info *info) > exit(1); > } > > + init_cmdline(info); > + > return kernel_entry; > } > > @@ -73,6 +89,10 @@ static void reset_load_elf(void *opaque) > > cpu_reset(CPU(cpu)); > if (env->load_elf) { > + if (cpu == LOONGARCH_CPU(first_cpu)) { > + env->gpr[4] = env->boot_info->a0; > + env->gpr[5] = env->boot_info->a1; > + } > cpu_set_pc(CPU(cpu), env->elf_address); > } > } > @@ -129,6 +149,7 @@ static void loongarch_direct_kernel_boot(LoongArchMachineState *lams, > lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); > lacpu->env.load_elf = true; > lacpu->env.elf_address = kernel_addr; > + lacpu->env.boot_info = info; > } > } > > diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h > index e4126dd0e7..d21de2cef4 100644 > --- a/include/hw/loongarch/virt.h > +++ b/include/hw/loongarch/virt.h > @@ -31,6 +31,8 @@ > #define VIRT_GED_MEM_ADDR (VIRT_GED_EVT_ADDR + ACPI_GED_EVT_SEL_LEN) > #define VIRT_GED_REG_ADDR (VIRT_GED_MEM_ADDR + MEMORY_HOTPLUG_IO_LEN) > > +#define COMMAND_LINE_SIZE 512 The macro COMMAND_LINE_SIZE is already defined in Linux header file, maybe standard header file can be used. /usr/include/asm-generic/setup.h #define COMMAND_LINE_SIZE 512 Regards Bibo Mao > + > struct LoongArchMachineState { > /*< private >*/ > MachineState parent_obj; > diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h > index 00d1fba597..c7c695138e 100644 > --- a/target/loongarch/cpu.h > +++ b/target/loongarch/cpu.h > @@ -362,6 +362,8 @@ typedef struct CPUArchState { > uint64_t elf_address; > /* Store ipistate to access from this struct */ > DeviceState *ipistate; > + > + struct loongarch_boot_info *boot_info; > #endif > } CPULoongArchState; > >
在 2023/12/21 下午3:20, maobibo 写道: > > > On 2023/12/18 下午5:00, Song Gao wrote: >> Add init_cmline and set boot_info->a0, a1 >> >> Signed-off-by: Song Gao <gaosong@loongson.cn> >> --- >> hw/loongarch/boot.c | 21 +++++++++++++++++++++ >> include/hw/loongarch/virt.h | 2 ++ >> target/loongarch/cpu.h | 2 ++ >> 3 files changed, 25 insertions(+) >> >> diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c >> index 2be6dfb037..4bfe24274a 100644 >> --- a/hw/loongarch/boot.c >> +++ b/hw/loongarch/boot.c >> @@ -14,6 +14,20 @@ >> #include "qemu/error-report.h" >> #include "sysemu/reset.h" >> +static int init_cmdline(struct loongarch_boot_info *info) >> +{ >> + hwaddr cmdline_addr; >> + cmdline_addr = 0xff00000ULL; >> + >> + pstrcpy_targphys("cmdline", 0xff00000ULL, >> + COMMAND_LINE_SIZE, info->kernel_cmdline); > There are two places using 0xff00000ULL here, it had better be defined > as macro. Also can address for cmdline be before FDT base > address(0x100000) rather than strange value 0xff00000 ? -:) > >> + >> + info->a0 = 1; >> + info->a1 = cmdline_addr; >> + >> + return 0; >> +} >> + >> static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t >> addr) >> { >> return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS); >> @@ -63,6 +77,8 @@ static int64_t load_kernel_info(struct >> loongarch_boot_info *info) >> exit(1); >> } >> + init_cmdline(info); >> + >> return kernel_entry; >> } >> @@ -73,6 +89,10 @@ static void reset_load_elf(void *opaque) >> cpu_reset(CPU(cpu)); >> if (env->load_elf) { >> + if (cpu == LOONGARCH_CPU(first_cpu)) { >> + env->gpr[4] = env->boot_info->a0; >> + env->gpr[5] = env->boot_info->a1; >> + } >> cpu_set_pc(CPU(cpu), env->elf_address); >> } >> } >> @@ -129,6 +149,7 @@ static void >> loongarch_direct_kernel_boot(LoongArchMachineState *lams, >> lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); >> lacpu->env.load_elf = true; >> lacpu->env.elf_address = kernel_addr; >> + lacpu->env.boot_info = info; >> } >> } >> diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h >> index e4126dd0e7..d21de2cef4 100644 >> --- a/include/hw/loongarch/virt.h >> +++ b/include/hw/loongarch/virt.h >> @@ -31,6 +31,8 @@ >> #define VIRT_GED_MEM_ADDR (VIRT_GED_EVT_ADDR + >> ACPI_GED_EVT_SEL_LEN) >> #define VIRT_GED_REG_ADDR (VIRT_GED_MEM_ADDR + >> MEMORY_HOTPLUG_IO_LEN) >> +#define COMMAND_LINE_SIZE 512 > The macro COMMAND_LINE_SIZE is already defined in Linux header file, > maybe standard header file can be used. > > /usr/include/asm-generic/setup.h > #define COMMAND_LINE_SIZE 512 > Yes, #include <asm-generic/setup.h> Thanks. Song Gao > > Regards > Bibo Mao >> + >> struct LoongArchMachineState { >> /*< private >*/ >> MachineState parent_obj; >> diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h >> index 00d1fba597..c7c695138e 100644 >> --- a/target/loongarch/cpu.h >> +++ b/target/loongarch/cpu.h >> @@ -362,6 +362,8 @@ typedef struct CPUArchState { >> uint64_t elf_address; >> /* Store ipistate to access from this struct */ >> DeviceState *ipistate; >> + >> + struct loongarch_boot_info *boot_info; >> #endif >> } CPULoongArchState; >>
diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c index 2be6dfb037..4bfe24274a 100644 --- a/hw/loongarch/boot.c +++ b/hw/loongarch/boot.c @@ -14,6 +14,20 @@ #include "qemu/error-report.h" #include "sysemu/reset.h" +static int init_cmdline(struct loongarch_boot_info *info) +{ + hwaddr cmdline_addr; + cmdline_addr = 0xff00000ULL; + + pstrcpy_targphys("cmdline", 0xff00000ULL, + COMMAND_LINE_SIZE, info->kernel_cmdline); + + info->a0 = 1; + info->a1 = cmdline_addr; + + return 0; +} + static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr) { return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS); @@ -63,6 +77,8 @@ static int64_t load_kernel_info(struct loongarch_boot_info *info) exit(1); } + init_cmdline(info); + return kernel_entry; } @@ -73,6 +89,10 @@ static void reset_load_elf(void *opaque) cpu_reset(CPU(cpu)); if (env->load_elf) { + if (cpu == LOONGARCH_CPU(first_cpu)) { + env->gpr[4] = env->boot_info->a0; + env->gpr[5] = env->boot_info->a1; + } cpu_set_pc(CPU(cpu), env->elf_address); } } @@ -129,6 +149,7 @@ static void loongarch_direct_kernel_boot(LoongArchMachineState *lams, lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); lacpu->env.load_elf = true; lacpu->env.elf_address = kernel_addr; + lacpu->env.boot_info = info; } } diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index e4126dd0e7..d21de2cef4 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -31,6 +31,8 @@ #define VIRT_GED_MEM_ADDR (VIRT_GED_EVT_ADDR + ACPI_GED_EVT_SEL_LEN) #define VIRT_GED_REG_ADDR (VIRT_GED_MEM_ADDR + MEMORY_HOTPLUG_IO_LEN) +#define COMMAND_LINE_SIZE 512 + struct LoongArchMachineState { /*< private >*/ MachineState parent_obj; diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 00d1fba597..c7c695138e 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -362,6 +362,8 @@ typedef struct CPUArchState { uint64_t elf_address; /* Store ipistate to access from this struct */ DeviceState *ipistate; + + struct loongarch_boot_info *boot_info; #endif } CPULoongArchState;
Add init_cmline and set boot_info->a0, a1 Signed-off-by: Song Gao <gaosong@loongson.cn> --- hw/loongarch/boot.c | 21 +++++++++++++++++++++ include/hw/loongarch/virt.h | 2 ++ target/loongarch/cpu.h | 2 ++ 3 files changed, 25 insertions(+)