diff mbox series

[v4,10/11] hw/riscv/boot.c: introduce riscv_load_kernel_and_initrd()

Message ID 20221229181135.270661-11-dbarboza@ventanamicro.com (mailing list archive)
State New, archived
Headers show
Series riscv: OpenSBI boot test and cleanups | expand

Commit Message

Daniel Henrique Barboza Dec. 29, 2022, 6:11 p.m. UTC
The microchip_icicle_kit, sifive_u, spike and virt boards are now doing
the same steps when '-kernel' is used:

- execute load_kernel()
- load init_rd()
- write kernel_cmdline in the fdt

Let's fold everything inside riscv_load_kernel() to avoid code
repetition. Every other board that uses riscv_load_kernel() will have
this same behavior, including boards that doesn't have a valid FDT, so
we need to take care to not do FDT operations without checking it first.

Since we're now doing way more than just loading the kernel, rename
riscv_load_kernel() to riscv_load_kernel_and_initrd().

Cc: Palmer Dabbelt <palmer@dabbelt.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
 hw/riscv/boot.c            | 27 +++++++++++++++++++++------
 hw/riscv/microchip_pfsoc.c | 12 ++----------
 hw/riscv/opentitan.c       |  2 +-
 hw/riscv/sifive_e.c        |  3 ++-
 hw/riscv/sifive_u.c        | 12 ++----------
 hw/riscv/spike.c           | 14 +++-----------
 hw/riscv/virt.c            | 12 ++----------
 include/hw/riscv/boot.h    |  6 +++---
 8 files changed, 36 insertions(+), 52 deletions(-)

Comments

Bin Meng Dec. 30, 2022, 9:05 a.m. UTC | #1
On Fri, Dec 30, 2022 at 2:47 AM Daniel Henrique Barboza
<dbarboza@ventanamicro.com> wrote:
>
> The microchip_icicle_kit, sifive_u, spike and virt boards are now doing
> the same steps when '-kernel' is used:
>
> - execute load_kernel()
> - load init_rd()
> - write kernel_cmdline in the fdt
>
> Let's fold everything inside riscv_load_kernel() to avoid code
> repetition. Every other board that uses riscv_load_kernel() will have
> this same behavior, including boards that doesn't have a valid FDT, so
> we need to take care to not do FDT operations without checking it first.
>
> Since we're now doing way more than just loading the kernel, rename
> riscv_load_kernel() to riscv_load_kernel_and_initrd().
>
> Cc: Palmer Dabbelt <palmer@dabbelt.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> ---
>  hw/riscv/boot.c            | 27 +++++++++++++++++++++------
>  hw/riscv/microchip_pfsoc.c | 12 ++----------
>  hw/riscv/opentitan.c       |  2 +-
>  hw/riscv/sifive_e.c        |  3 ++-
>  hw/riscv/sifive_u.c        | 12 ++----------
>  hw/riscv/spike.c           | 14 +++-----------
>  hw/riscv/virt.c            | 12 ++----------
>  include/hw/riscv/boot.h    |  6 +++---
>  8 files changed, 36 insertions(+), 52 deletions(-)
>
> diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
> index 5606ea6f43..d18262c302 100644
> --- a/hw/riscv/boot.c
> +++ b/hw/riscv/boot.c
> @@ -171,12 +171,13 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
>      exit(1);
>  }
>
> -target_ulong riscv_load_kernel(MachineState *machine,
> -                               target_ulong kernel_start_addr,
> -                               symbol_fn_t sym_cb)
> +target_ulong riscv_load_kernel_and_initrd(MachineState *machine,
> +                                          target_ulong kernel_start_addr,
> +                                          symbol_fn_t sym_cb)

How about we keep the riscv_load_kernel() API, in case there is a need
for machines that just want to load kernel only?

Then introduce a new API riscv_load_kernel_and_initrd() to do both
kernel and initrd loading?

>  {
>      const char *kernel_filename = machine->kernel_filename;
>      uint64_t kernel_load_base, kernel_entry;
> +    void *fdt = machine->fdt;
>
>      g_assert(kernel_filename != NULL);
>
> @@ -190,21 +191,35 @@ target_ulong riscv_load_kernel(MachineState *machine,
>      if (load_elf_ram_sym(kernel_filename, NULL, NULL, NULL,
>                           NULL, &kernel_load_base, NULL, NULL, 0,
>                           EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
> -        return kernel_load_base;
> +        kernel_entry = kernel_load_base;
> +        goto out;
>      }
>
>      if (load_uimage_as(kernel_filename, &kernel_entry, NULL, NULL,
>                         NULL, NULL, NULL) > 0) {
> -        return kernel_entry;
> +        goto out;
>      }
>
>      if (load_image_targphys_as(kernel_filename, kernel_start_addr,
>                                 current_machine->ram_size, NULL) > 0) {
> -        return kernel_start_addr;
> +        kernel_entry = kernel_start_addr;
> +        goto out;
>      }
>
>      error_report("could not load kernel '%s'", kernel_filename);
>      exit(1);
> +
> +out:
> +    if (machine->initrd_filename) {
> +        riscv_load_initrd(machine, kernel_entry);
> +    }
> +
> +    if (fdt && machine->kernel_cmdline && *machine->kernel_cmdline) {
> +        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
> +                                machine->kernel_cmdline);
> +    }
> +
> +    return kernel_entry;
>  }
>
>  void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry)
> diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
> index 82ae5e7023..b64631f166 100644
> --- a/hw/riscv/microchip_pfsoc.c
> +++ b/hw/riscv/microchip_pfsoc.c
> @@ -629,16 +629,8 @@ static void microchip_icicle_kit_machine_init(MachineState *machine)
>          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
>                                                           firmware_end_addr);
>
> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
> -
> -        if (machine->initrd_filename) {
> -            riscv_load_initrd(machine, kernel_entry);
> -        }
> -
> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
> -            qemu_fdt_setprop_string(machine->fdt, "/chosen",
> -                                    "bootargs", machine->kernel_cmdline);
> -        }
> +        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
> +                                                    NULL);
>
>          /* Compute the fdt load address in dram */
>          fdt_load_addr = riscv_load_fdt(memmap[MICROCHIP_PFSOC_DRAM_LO].base,
> diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
> index 64d5d435b9..0818d9610c 100644
> --- a/hw/riscv/opentitan.c
> +++ b/hw/riscv/opentitan.c
> @@ -101,7 +101,7 @@ static void opentitan_board_init(MachineState *machine)
>      }
>
>      if (machine->kernel_filename) {
> -        riscv_load_kernel(machine, memmap[IBEX_DEV_RAM].base, NULL);
> +        riscv_load_kernel_and_initrd(machine, memmap[IBEX_DEV_RAM].base, NULL);
>      }
>  }
>
> diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
> index 3e3f4b0088..e22628b623 100644
> --- a/hw/riscv/sifive_e.c
> +++ b/hw/riscv/sifive_e.c
> @@ -114,7 +114,8 @@ static void sifive_e_machine_init(MachineState *machine)
>                            memmap[SIFIVE_E_DEV_MROM].base, &address_space_memory);
>
>      if (machine->kernel_filename) {
> -        riscv_load_kernel(machine, memmap[SIFIVE_E_DEV_DTIM].base, NULL);
> +        riscv_load_kernel_and_initrd(machine, memmap[SIFIVE_E_DEV_DTIM].base,
> +                                     NULL);
>      }
>  }
>
> diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
> index bac394c959..b6fb715a9f 100644
> --- a/hw/riscv/sifive_u.c
> +++ b/hw/riscv/sifive_u.c
> @@ -598,16 +598,8 @@ static void sifive_u_machine_init(MachineState *machine)
>          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
>                                                           firmware_end_addr);
>
> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
> -
> -        if (machine->initrd_filename) {
> -            riscv_load_initrd(machine, kernel_entry);
> -        }
> -
> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
> -            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
> -                                    machine->kernel_cmdline);
> -        }
> +        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
> +                                                    NULL);
>      } else {
>         /*
>          * If dynamic firmware is used, it doesn't know where is the next mode
> diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
> index bff9475686..cccfeb4fce 100644
> --- a/hw/riscv/spike.c
> +++ b/hw/riscv/spike.c
> @@ -307,17 +307,9 @@ static void spike_board_init(MachineState *machine)
>          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
>                                                           firmware_end_addr);
>
> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr,
> -                                         htif_symbol_callback);
> -
> -        if (machine->initrd_filename) {
> -            riscv_load_initrd(machine, kernel_entry);
> -        }
> -
> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
> -            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
> -                                    machine->kernel_cmdline);
> -        }
> +        kernel_entry = riscv_load_kernel_and_initrd(machine,
> +                                                    kernel_start_addr,
> +                                                    htif_symbol_callback);
>      } else {
>         /*
>          * If dynamic firmware is used, it doesn't know where is the next mode
> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
> index c8e35f861e..eadf057940 100644
> --- a/hw/riscv/virt.c
> +++ b/hw/riscv/virt.c
> @@ -1281,16 +1281,8 @@ static void virt_machine_done(Notifier *notifier, void *data)
>          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
>                                                           firmware_end_addr);
>
> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
> -
> -        if (machine->initrd_filename) {
> -            riscv_load_initrd(machine, kernel_entry);
> -        }
> -
> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
> -            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
> -                                    machine->kernel_cmdline);
> -        }
> +        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
> +                                                    NULL);
>      } else {
>         /*
>          * If dynamic firmware is used, it doesn't know where is the next mode
> diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
> index f94653a09b..16b86450d3 100644
> --- a/include/hw/riscv/boot.h
> +++ b/include/hw/riscv/boot.h
> @@ -43,9 +43,9 @@ char *riscv_find_firmware(const char *firmware_filename,
>  target_ulong riscv_load_firmware(const char *firmware_filename,
>                                   hwaddr firmware_load_addr,
>                                   symbol_fn_t sym_cb);
> -target_ulong riscv_load_kernel(MachineState *machine,
> -                               target_ulong firmware_end_addr,
> -                               symbol_fn_t sym_cb);
> +target_ulong riscv_load_kernel_and_initrd(MachineState *machine,
> +                                          target_ulong firmware_end_addr,
> +                                          symbol_fn_t sym_cb);
>  void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry);
>  uint64_t riscv_load_fdt(hwaddr dram_start, uint64_t dram_size, void *fdt);
>  void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts,
> --

Regards,
Bin
Daniel Henrique Barboza Dec. 30, 2022, 12:04 p.m. UTC | #2
On 12/30/22 06:05, Bin Meng wrote:
> On Fri, Dec 30, 2022 at 2:47 AM Daniel Henrique Barboza
> <dbarboza@ventanamicro.com> wrote:
>> The microchip_icicle_kit, sifive_u, spike and virt boards are now doing
>> the same steps when '-kernel' is used:
>>
>> - execute load_kernel()
>> - load init_rd()
>> - write kernel_cmdline in the fdt
>>
>> Let's fold everything inside riscv_load_kernel() to avoid code
>> repetition. Every other board that uses riscv_load_kernel() will have
>> this same behavior, including boards that doesn't have a valid FDT, so
>> we need to take care to not do FDT operations without checking it first.
>>
>> Since we're now doing way more than just loading the kernel, rename
>> riscv_load_kernel() to riscv_load_kernel_and_initrd().
>>
>> Cc: Palmer Dabbelt <palmer@dabbelt.com>
>> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>> Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
>> ---
>>   hw/riscv/boot.c            | 27 +++++++++++++++++++++------
>>   hw/riscv/microchip_pfsoc.c | 12 ++----------
>>   hw/riscv/opentitan.c       |  2 +-
>>   hw/riscv/sifive_e.c        |  3 ++-
>>   hw/riscv/sifive_u.c        | 12 ++----------
>>   hw/riscv/spike.c           | 14 +++-----------
>>   hw/riscv/virt.c            | 12 ++----------
>>   include/hw/riscv/boot.h    |  6 +++---
>>   8 files changed, 36 insertions(+), 52 deletions(-)
>>
>> diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
>> index 5606ea6f43..d18262c302 100644
>> --- a/hw/riscv/boot.c
>> +++ b/hw/riscv/boot.c
>> @@ -171,12 +171,13 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
>>       exit(1);
>>   }
>>
>> -target_ulong riscv_load_kernel(MachineState *machine,
>> -                               target_ulong kernel_start_addr,
>> -                               symbol_fn_t sym_cb)
>> +target_ulong riscv_load_kernel_and_initrd(MachineState *machine,
>> +                                          target_ulong kernel_start_addr,
>> +                                          symbol_fn_t sym_cb)
> How about we keep the riscv_load_kernel() API, in case there is a need
> for machines that just want to load kernel only?
>
> Then introduce a new API riscv_load_kernel_and_initrd() to do both
> kernel and initrd loading?

What about an extra flag to riscv_load_kernel(), e.g:

riscv_load_kernel(MachineState *machine,  target_ulong kernel_start_addr,
                                 bool load_initrd, symbol_fn_t sym_cb)


And then machines that don't want to load initrd can opt out by using
load_initrd = false. The name of the flag would also make our intentions with
the API self explanatory (i.e. load_initrd makes load_kernel() loads initrd
as well).


Daniel

>
>>   {
>>       const char *kernel_filename = machine->kernel_filename;
>>       uint64_t kernel_load_base, kernel_entry;
>> +    void *fdt = machine->fdt;
>>
>>       g_assert(kernel_filename != NULL);
>>
>> @@ -190,21 +191,35 @@ target_ulong riscv_load_kernel(MachineState *machine,
>>       if (load_elf_ram_sym(kernel_filename, NULL, NULL, NULL,
>>                            NULL, &kernel_load_base, NULL, NULL, 0,
>>                            EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
>> -        return kernel_load_base;
>> +        kernel_entry = kernel_load_base;
>> +        goto out;
>>       }
>>
>>       if (load_uimage_as(kernel_filename, &kernel_entry, NULL, NULL,
>>                          NULL, NULL, NULL) > 0) {
>> -        return kernel_entry;
>> +        goto out;
>>       }
>>
>>       if (load_image_targphys_as(kernel_filename, kernel_start_addr,
>>                                  current_machine->ram_size, NULL) > 0) {
>> -        return kernel_start_addr;
>> +        kernel_entry = kernel_start_addr;
>> +        goto out;
>>       }
>>
>>       error_report("could not load kernel '%s'", kernel_filename);
>>       exit(1);
>> +
>> +out:
>> +    if (machine->initrd_filename) {
>> +        riscv_load_initrd(machine, kernel_entry);
>> +    }
>> +
>> +    if (fdt && machine->kernel_cmdline && *machine->kernel_cmdline) {
>> +        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
>> +                                machine->kernel_cmdline);
>> +    }
>> +
>> +    return kernel_entry;
>>   }
>>
>>   void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry)
>> diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
>> index 82ae5e7023..b64631f166 100644
>> --- a/hw/riscv/microchip_pfsoc.c
>> +++ b/hw/riscv/microchip_pfsoc.c
>> @@ -629,16 +629,8 @@ static void microchip_icicle_kit_machine_init(MachineState *machine)
>>           kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
>>                                                            firmware_end_addr);
>>
>> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
>> -
>> -        if (machine->initrd_filename) {
>> -            riscv_load_initrd(machine, kernel_entry);
>> -        }
>> -
>> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
>> -            qemu_fdt_setprop_string(machine->fdt, "/chosen",
>> -                                    "bootargs", machine->kernel_cmdline);
>> -        }
>> +        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
>> +                                                    NULL);
>>
>>           /* Compute the fdt load address in dram */
>>           fdt_load_addr = riscv_load_fdt(memmap[MICROCHIP_PFSOC_DRAM_LO].base,
>> diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
>> index 64d5d435b9..0818d9610c 100644
>> --- a/hw/riscv/opentitan.c
>> +++ b/hw/riscv/opentitan.c
>> @@ -101,7 +101,7 @@ static void opentitan_board_init(MachineState *machine)
>>       }
>>
>>       if (machine->kernel_filename) {
>> -        riscv_load_kernel(machine, memmap[IBEX_DEV_RAM].base, NULL);
>> +        riscv_load_kernel_and_initrd(machine, memmap[IBEX_DEV_RAM].base, NULL);
>>       }
>>   }
>>
>> diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
>> index 3e3f4b0088..e22628b623 100644
>> --- a/hw/riscv/sifive_e.c
>> +++ b/hw/riscv/sifive_e.c
>> @@ -114,7 +114,8 @@ static void sifive_e_machine_init(MachineState *machine)
>>                             memmap[SIFIVE_E_DEV_MROM].base, &address_space_memory);
>>
>>       if (machine->kernel_filename) {
>> -        riscv_load_kernel(machine, memmap[SIFIVE_E_DEV_DTIM].base, NULL);
>> +        riscv_load_kernel_and_initrd(machine, memmap[SIFIVE_E_DEV_DTIM].base,
>> +                                     NULL);
>>       }
>>   }
>>
>> diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
>> index bac394c959..b6fb715a9f 100644
>> --- a/hw/riscv/sifive_u.c
>> +++ b/hw/riscv/sifive_u.c
>> @@ -598,16 +598,8 @@ static void sifive_u_machine_init(MachineState *machine)
>>           kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
>>                                                            firmware_end_addr);
>>
>> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
>> -
>> -        if (machine->initrd_filename) {
>> -            riscv_load_initrd(machine, kernel_entry);
>> -        }
>> -
>> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
>> -            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
>> -                                    machine->kernel_cmdline);
>> -        }
>> +        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
>> +                                                    NULL);
>>       } else {
>>          /*
>>           * If dynamic firmware is used, it doesn't know where is the next mode
>> diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
>> index bff9475686..cccfeb4fce 100644
>> --- a/hw/riscv/spike.c
>> +++ b/hw/riscv/spike.c
>> @@ -307,17 +307,9 @@ static void spike_board_init(MachineState *machine)
>>           kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
>>                                                            firmware_end_addr);
>>
>> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr,
>> -                                         htif_symbol_callback);
>> -
>> -        if (machine->initrd_filename) {
>> -            riscv_load_initrd(machine, kernel_entry);
>> -        }
>> -
>> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
>> -            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
>> -                                    machine->kernel_cmdline);
>> -        }
>> +        kernel_entry = riscv_load_kernel_and_initrd(machine,
>> +                                                    kernel_start_addr,
>> +                                                    htif_symbol_callback);
>>       } else {
>>          /*
>>           * If dynamic firmware is used, it doesn't know where is the next mode
>> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
>> index c8e35f861e..eadf057940 100644
>> --- a/hw/riscv/virt.c
>> +++ b/hw/riscv/virt.c
>> @@ -1281,16 +1281,8 @@ static void virt_machine_done(Notifier *notifier, void *data)
>>           kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
>>                                                            firmware_end_addr);
>>
>> -        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
>> -
>> -        if (machine->initrd_filename) {
>> -            riscv_load_initrd(machine, kernel_entry);
>> -        }
>> -
>> -        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
>> -            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
>> -                                    machine->kernel_cmdline);
>> -        }
>> +        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
>> +                                                    NULL);
>>       } else {
>>          /*
>>           * If dynamic firmware is used, it doesn't know where is the next mode
>> diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
>> index f94653a09b..16b86450d3 100644
>> --- a/include/hw/riscv/boot.h
>> +++ b/include/hw/riscv/boot.h
>> @@ -43,9 +43,9 @@ char *riscv_find_firmware(const char *firmware_filename,
>>   target_ulong riscv_load_firmware(const char *firmware_filename,
>>                                    hwaddr firmware_load_addr,
>>                                    symbol_fn_t sym_cb);
>> -target_ulong riscv_load_kernel(MachineState *machine,
>> -                               target_ulong firmware_end_addr,
>> -                               symbol_fn_t sym_cb);
>> +target_ulong riscv_load_kernel_and_initrd(MachineState *machine,
>> +                                          target_ulong firmware_end_addr,
>> +                                          symbol_fn_t sym_cb);
>>   void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry);
>>   uint64_t riscv_load_fdt(hwaddr dram_start, uint64_t dram_size, void *fdt);
>>   void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts,
>> --
> Regards,
> Bin
Bin Meng Dec. 30, 2022, 12:26 p.m. UTC | #3
On Fri, Dec 30, 2022 at 8:04 PM Daniel Henrique Barboza
<dbarboza@ventanamicro.com> wrote:
>
>
>
> On 12/30/22 06:05, Bin Meng wrote:
> > On Fri, Dec 30, 2022 at 2:47 AM Daniel Henrique Barboza
> > <dbarboza@ventanamicro.com> wrote:
> >> The microchip_icicle_kit, sifive_u, spike and virt boards are now doing
> >> the same steps when '-kernel' is used:
> >>
> >> - execute load_kernel()
> >> - load init_rd()
> >> - write kernel_cmdline in the fdt
> >>
> >> Let's fold everything inside riscv_load_kernel() to avoid code
> >> repetition. Every other board that uses riscv_load_kernel() will have
> >> this same behavior, including boards that doesn't have a valid FDT, so
> >> we need to take care to not do FDT operations without checking it first.
> >>
> >> Since we're now doing way more than just loading the kernel, rename
> >> riscv_load_kernel() to riscv_load_kernel_and_initrd().
> >>
> >> Cc: Palmer Dabbelt <palmer@dabbelt.com>
> >> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> >> Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> >> ---
> >>   hw/riscv/boot.c            | 27 +++++++++++++++++++++------
> >>   hw/riscv/microchip_pfsoc.c | 12 ++----------
> >>   hw/riscv/opentitan.c       |  2 +-
> >>   hw/riscv/sifive_e.c        |  3 ++-
> >>   hw/riscv/sifive_u.c        | 12 ++----------
> >>   hw/riscv/spike.c           | 14 +++-----------
> >>   hw/riscv/virt.c            | 12 ++----------
> >>   include/hw/riscv/boot.h    |  6 +++---
> >>   8 files changed, 36 insertions(+), 52 deletions(-)
> >>
> >> diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
> >> index 5606ea6f43..d18262c302 100644
> >> --- a/hw/riscv/boot.c
> >> +++ b/hw/riscv/boot.c
> >> @@ -171,12 +171,13 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
> >>       exit(1);
> >>   }
> >>
> >> -target_ulong riscv_load_kernel(MachineState *machine,
> >> -                               target_ulong kernel_start_addr,
> >> -                               symbol_fn_t sym_cb)
> >> +target_ulong riscv_load_kernel_and_initrd(MachineState *machine,
> >> +                                          target_ulong kernel_start_addr,
> >> +                                          symbol_fn_t sym_cb)
> > How about we keep the riscv_load_kernel() API, in case there is a need
> > for machines that just want to load kernel only?
> >
> > Then introduce a new API riscv_load_kernel_and_initrd() to do both
> > kernel and initrd loading?
>
> What about an extra flag to riscv_load_kernel(), e.g:
>
> riscv_load_kernel(MachineState *machine,  target_ulong kernel_start_addr,
>                                  bool load_initrd, symbol_fn_t sym_cb)
>
>
> And then machines that don't want to load initrd can opt out by using
> load_initrd = false. The name of the flag would also make our intentions with
> the API self explanatory (i.e. load_initrd makes load_kernel() loads initrd
> as well).
>

That sounds like a good idea!

Regards,
Bin
diff mbox series

Patch

diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index 5606ea6f43..d18262c302 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -171,12 +171,13 @@  target_ulong riscv_load_firmware(const char *firmware_filename,
     exit(1);
 }
 
-target_ulong riscv_load_kernel(MachineState *machine,
-                               target_ulong kernel_start_addr,
-                               symbol_fn_t sym_cb)
+target_ulong riscv_load_kernel_and_initrd(MachineState *machine,
+                                          target_ulong kernel_start_addr,
+                                          symbol_fn_t sym_cb)
 {
     const char *kernel_filename = machine->kernel_filename;
     uint64_t kernel_load_base, kernel_entry;
+    void *fdt = machine->fdt;
 
     g_assert(kernel_filename != NULL);
 
@@ -190,21 +191,35 @@  target_ulong riscv_load_kernel(MachineState *machine,
     if (load_elf_ram_sym(kernel_filename, NULL, NULL, NULL,
                          NULL, &kernel_load_base, NULL, NULL, 0,
                          EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
-        return kernel_load_base;
+        kernel_entry = kernel_load_base;
+        goto out;
     }
 
     if (load_uimage_as(kernel_filename, &kernel_entry, NULL, NULL,
                        NULL, NULL, NULL) > 0) {
-        return kernel_entry;
+        goto out;
     }
 
     if (load_image_targphys_as(kernel_filename, kernel_start_addr,
                                current_machine->ram_size, NULL) > 0) {
-        return kernel_start_addr;
+        kernel_entry = kernel_start_addr;
+        goto out;
     }
 
     error_report("could not load kernel '%s'", kernel_filename);
     exit(1);
+
+out:
+    if (machine->initrd_filename) {
+        riscv_load_initrd(machine, kernel_entry);
+    }
+
+    if (fdt && machine->kernel_cmdline && *machine->kernel_cmdline) {
+        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
+                                machine->kernel_cmdline);
+    }
+
+    return kernel_entry;
 }
 
 void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry)
diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
index 82ae5e7023..b64631f166 100644
--- a/hw/riscv/microchip_pfsoc.c
+++ b/hw/riscv/microchip_pfsoc.c
@@ -629,16 +629,8 @@  static void microchip_icicle_kit_machine_init(MachineState *machine)
         kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
                                                          firmware_end_addr);
 
-        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
-
-        if (machine->initrd_filename) {
-            riscv_load_initrd(machine, kernel_entry);
-        }
-
-        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
-            qemu_fdt_setprop_string(machine->fdt, "/chosen",
-                                    "bootargs", machine->kernel_cmdline);
-        }
+        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
+                                                    NULL);
 
         /* Compute the fdt load address in dram */
         fdt_load_addr = riscv_load_fdt(memmap[MICROCHIP_PFSOC_DRAM_LO].base,
diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
index 64d5d435b9..0818d9610c 100644
--- a/hw/riscv/opentitan.c
+++ b/hw/riscv/opentitan.c
@@ -101,7 +101,7 @@  static void opentitan_board_init(MachineState *machine)
     }
 
     if (machine->kernel_filename) {
-        riscv_load_kernel(machine, memmap[IBEX_DEV_RAM].base, NULL);
+        riscv_load_kernel_and_initrd(machine, memmap[IBEX_DEV_RAM].base, NULL);
     }
 }
 
diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
index 3e3f4b0088..e22628b623 100644
--- a/hw/riscv/sifive_e.c
+++ b/hw/riscv/sifive_e.c
@@ -114,7 +114,8 @@  static void sifive_e_machine_init(MachineState *machine)
                           memmap[SIFIVE_E_DEV_MROM].base, &address_space_memory);
 
     if (machine->kernel_filename) {
-        riscv_load_kernel(machine, memmap[SIFIVE_E_DEV_DTIM].base, NULL);
+        riscv_load_kernel_and_initrd(machine, memmap[SIFIVE_E_DEV_DTIM].base,
+                                     NULL);
     }
 }
 
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index bac394c959..b6fb715a9f 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -598,16 +598,8 @@  static void sifive_u_machine_init(MachineState *machine)
         kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc.u_cpus,
                                                          firmware_end_addr);
 
-        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
-
-        if (machine->initrd_filename) {
-            riscv_load_initrd(machine, kernel_entry);
-        }
-
-        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
-            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
-                                    machine->kernel_cmdline);
-        }
+        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
+                                                    NULL);
     } else {
        /*
         * If dynamic firmware is used, it doesn't know where is the next mode
diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
index bff9475686..cccfeb4fce 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -307,17 +307,9 @@  static void spike_board_init(MachineState *machine)
         kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
                                                          firmware_end_addr);
 
-        kernel_entry = riscv_load_kernel(machine, kernel_start_addr,
-                                         htif_symbol_callback);
-
-        if (machine->initrd_filename) {
-            riscv_load_initrd(machine, kernel_entry);
-        }
-
-        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
-            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
-                                    machine->kernel_cmdline);
-        }
+        kernel_entry = riscv_load_kernel_and_initrd(machine,
+                                                    kernel_start_addr,
+                                                    htif_symbol_callback);
     } else {
        /*
         * If dynamic firmware is used, it doesn't know where is the next mode
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index c8e35f861e..eadf057940 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -1281,16 +1281,8 @@  static void virt_machine_done(Notifier *notifier, void *data)
         kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
                                                          firmware_end_addr);
 
-        kernel_entry = riscv_load_kernel(machine, kernel_start_addr, NULL);
-
-        if (machine->initrd_filename) {
-            riscv_load_initrd(machine, kernel_entry);
-        }
-
-        if (machine->kernel_cmdline && *machine->kernel_cmdline) {
-            qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs",
-                                    machine->kernel_cmdline);
-        }
+        kernel_entry = riscv_load_kernel_and_initrd(machine, kernel_start_addr,
+                                                    NULL);
     } else {
        /*
         * If dynamic firmware is used, it doesn't know where is the next mode
diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
index f94653a09b..16b86450d3 100644
--- a/include/hw/riscv/boot.h
+++ b/include/hw/riscv/boot.h
@@ -43,9 +43,9 @@  char *riscv_find_firmware(const char *firmware_filename,
 target_ulong riscv_load_firmware(const char *firmware_filename,
                                  hwaddr firmware_load_addr,
                                  symbol_fn_t sym_cb);
-target_ulong riscv_load_kernel(MachineState *machine,
-                               target_ulong firmware_end_addr,
-                               symbol_fn_t sym_cb);
+target_ulong riscv_load_kernel_and_initrd(MachineState *machine,
+                                          target_ulong firmware_end_addr,
+                                          symbol_fn_t sym_cb);
 void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry);
 uint64_t riscv_load_fdt(hwaddr dram_start, uint64_t dram_size, void *fdt);
 void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts,