On Fri, Dec 30, 2022 at 2:47 AM Daniel Henrique Barboza
<dbarb...@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 <pal...@dabbelt.com>
> Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
> Signed-off-by: Daniel Henrique Barboza <dbarb...@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
