diff mbox series

[v3,09/10] hw/riscv/boot.c: introduce riscv_load_kernel_and_initrd()

Message ID 20221228133336.197467-10-dbarboza@ventanamicro.com
State New
Headers show
Series irscv: OpenSBI boot test and cleanups | expand

Commit Message

Daniel Henrique Barboza Dec. 28, 2022, 1:33 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>
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

Philippe Mathieu-Daudé Dec. 28, 2022, 3:52 p.m. UTC | #1 
On 28/12/22 14:33, Daniel Henrique Barboza 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>
> 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 cd9c989edb..6d1243ad8b 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;

I wonder if compilers/static analyzers might end complaining
because kernel_entry being set is not obvious.

Anyhow,
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

> +    void *fdt = machine->fdt;
>   
>       /*
>        * NB: Use low address not ELF entry point to ensure that the fw_dynamic
> @@ -188,21 +189,35 @@ 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;
>   }
diff mbox series

Patch

diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index cd9c989edb..6d1243ad8b 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;
 
     /*
      * NB: Use low address not ELF entry point to ensure that the fw_dynamic
@@ -188,21 +189,35 @@  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 0bba5c1640..a23ada8a03 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -302,17 +302,9 @@  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,