[PATCH] hw/riscv: spike: Allow using binary firmware as bios

Anup Patel posted 1 patch 1 week, 6 days ago
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git fetch https://github.com/patchew-project/qemu tags/patchew/20220114160457.70134-1-apatel@ventanamicro.com
Maintainers: Bin Meng <bin.meng@windriver.com>, Alistair Francis <alistair.francis@wdc.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Palmer Dabbelt <palmer@dabbelt.com>
hw/char/riscv_htif.c         | 33 +++++++++++++++++++----------
hw/riscv/spike.c             | 41 ++++++++++++++++++++++--------------
include/hw/char/riscv_htif.h |  5 ++++-
include/hw/riscv/spike.h     |  1 +
4 files changed, 52 insertions(+), 28 deletions(-)

[PATCH] hw/riscv: spike: Allow using binary firmware as bios

Posted by Anup Patel 1 week, 6 days ago
Currently, we have to use OpenSBI firmware ELF as bios for the spike
machine because the HTIF console requires ELF for parsing "fromhost"
and "tohost" symbols.

The latest OpenSBI can now optionally pick-up HTIF register address
from HTIF DT node so using this feature spike machine can now use
OpenSBI firmware BIN as bios.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
---
 hw/char/riscv_htif.c         | 33 +++++++++++++++++++----------
 hw/riscv/spike.c             | 41 ++++++++++++++++++++++--------------
 include/hw/char/riscv_htif.h |  5 ++++-
 include/hw/riscv/spike.h     |  1 +
 4 files changed, 52 insertions(+), 28 deletions(-)

diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c
index ddae738d56..b59d321fb7 100644
--- a/hw/char/riscv_htif.c
+++ b/hw/char/riscv_htif.c
@@ -228,13 +228,25 @@ static const MemoryRegionOps htif_mm_ops = {
     .write = htif_mm_write,
 };
 
+bool htif_uses_elf_symbols(void)
+{
+    return (address_symbol_set == 3) ? true : false;
+}
+
 HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
-    CPURISCVState *env, Chardev *chr)
+    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base)
 {
-    uint64_t base = MIN(tohost_addr, fromhost_addr);
-    uint64_t size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
-    uint64_t tohost_offset = tohost_addr - base;
-    uint64_t fromhost_offset = fromhost_addr - base;
+    uint64_t base, size, tohost_offset, fromhost_offset;
+
+    if (address_symbol_set != 3) {
+        fromhost_addr = nonelf_base;
+        tohost_addr = nonelf_base + 8;
+    }
+
+    base = MIN(tohost_addr, fromhost_addr);
+    size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
+    tohost_offset = tohost_addr - base;
+    fromhost_offset = fromhost_addr - base;
 
     HTIFState *s = g_malloc0(sizeof(HTIFState));
     s->address_space = address_space;
@@ -249,12 +261,11 @@ HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
     qemu_chr_fe_init(&s->chr, chr, &error_abort);
     qemu_chr_fe_set_handlers(&s->chr, htif_can_recv, htif_recv, htif_event,
         htif_be_change, s, NULL, true);
-    if (address_symbol_set == 3) {
-        memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
-                              TYPE_HTIF_UART, size);
-        memory_region_add_subregion_overlap(address_space, base,
-                                            &s->mmio, 1);
-    }
+
+    memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
+                          TYPE_HTIF_UART, size);
+    memory_region_add_subregion_overlap(address_space, base,
+                                        &s->mmio, 1);
 
     return s;
 }
diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
index 288d69cd9f..597df4c288 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -42,6 +42,7 @@
 
 static const MemMapEntry spike_memmap[] = {
     [SPIKE_MROM] =     {     0x1000,     0xf000 },
+    [SPIKE_HTIF] =     {  0x1000000,     0x1000 },
     [SPIKE_CLINT] =    {  0x2000000,    0x10000 },
     [SPIKE_DRAM] =     { 0x80000000,        0x0 },
 };
@@ -75,6 +76,10 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
 
     qemu_fdt_add_subnode(fdt, "/htif");
     qemu_fdt_setprop_string(fdt, "/htif", "compatible", "ucb,htif0");
+    if (!htif_uses_elf_symbols()) {
+        qemu_fdt_setprop_cells(fdt, "/htif", "reg",
+            0x0, memmap[SPIKE_HTIF].base, 0x0, memmap[SPIKE_HTIF].size);
+    }
 
     qemu_fdt_add_subnode(fdt, "/soc");
     qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
@@ -172,6 +177,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
     if (cmdline) {
         qemu_fdt_add_subnode(fdt, "/chosen");
         qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+        qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", "/htif");
     }
 }
 
@@ -241,10 +247,6 @@ static void spike_board_init(MachineState *machine)
     memory_region_add_subregion(system_memory, memmap[SPIKE_DRAM].base,
         machine->ram);
 
-    /* create device tree */
-    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
-               riscv_is_32bit(&s->soc[0]));
-
     /* boot rom */
     memory_region_init_rom(mask_rom, NULL, "riscv.spike.mrom",
                            memmap[SPIKE_MROM].size, &error_fatal);
@@ -266,6 +268,7 @@ static void spike_board_init(MachineState *machine)
                                     htif_symbol_callback);
     }
 
+    /* Load kernel */
     if (machine->kernel_filename) {
         kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
                                                          firmware_end_addr);
@@ -273,17 +276,6 @@ static void spike_board_init(MachineState *machine)
         kernel_entry = riscv_load_kernel(machine->kernel_filename,
                                          kernel_start_addr,
                                          htif_symbol_callback);
-
-        if (machine->initrd_filename) {
-            hwaddr start;
-            hwaddr end = riscv_load_initrd(machine->initrd_filename,
-                                           machine->ram_size, kernel_entry,
-                                           &start);
-            qemu_fdt_setprop_cell(s->fdt, "/chosen",
-                                  "linux,initrd-start", start);
-            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
-                                  end);
-        }
     } else {
        /*
         * If dynamic firmware is used, it doesn't know where is the next mode
@@ -292,6 +284,22 @@ static void spike_board_init(MachineState *machine)
         kernel_entry = 0;
     }
 
+    /* Create device tree */
+    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
+               riscv_is_32bit(&s->soc[0]));
+
+    /* Load initrd */
+    if (machine->kernel_filename && machine->initrd_filename) {
+        hwaddr start;
+        hwaddr end = riscv_load_initrd(machine->initrd_filename,
+                                       machine->ram_size, kernel_entry,
+                                       &start);
+        qemu_fdt_setprop_cell(s->fdt, "/chosen",
+                              "linux,initrd-start", start);
+        qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
+                              end);
+    }
+
     /* Compute the fdt load address in dram */
     fdt_load_addr = riscv_load_fdt(memmap[SPIKE_DRAM].base,
                                    machine->ram_size, s->fdt);
@@ -303,7 +311,8 @@ static void spike_board_init(MachineState *machine)
 
     /* initialize HTIF using symbols found in load_kernel */
     htif_mm_init(system_memory, mask_rom,
-                 &s->soc[0].harts[0].env, serial_hd(0));
+                 &s->soc[0].harts[0].env, serial_hd(0),
+                 memmap[SPIKE_HTIF].base);
 }
 
 static void spike_machine_instance_init(Object *obj)
diff --git a/include/hw/char/riscv_htif.h b/include/hw/char/riscv_htif.h
index fb9452cf51..f888ac1b30 100644
--- a/include/hw/char/riscv_htif.h
+++ b/include/hw/char/riscv_htif.h
@@ -52,8 +52,11 @@ extern const MemoryRegionOps htif_io_ops;
 void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
     uint64_t st_size);
 
+/* Check if HTIF uses ELF symbols */
+bool htif_uses_elf_symbols(void);
+
 /* legacy pre qom */
 HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
-    CPURISCVState *env, Chardev *chr);
+    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base);
 
 #endif
diff --git a/include/hw/riscv/spike.h b/include/hw/riscv/spike.h
index cdd1a13011..73d69234de 100644
--- a/include/hw/riscv/spike.h
+++ b/include/hw/riscv/spike.h
@@ -43,6 +43,7 @@ struct SpikeState {
 
 enum {
     SPIKE_MROM,
+    SPIKE_HTIF,
     SPIKE_CLINT,
     SPIKE_DRAM
 };
-- 
2.25.1


Re: [PATCH] hw/riscv: spike: Allow using binary firmware as bios

Posted by Alistair Francis 1 week, 2 days ago
On Sat, Jan 15, 2022 at 2:18 AM Anup Patel <apatel@ventanamicro.com> wrote:
>
> Currently, we have to use OpenSBI firmware ELF as bios for the spike
> machine because the HTIF console requires ELF for parsing "fromhost"
> and "tohost" symbols.
>
> The latest OpenSBI can now optionally pick-up HTIF register address
> from HTIF DT node so using this feature spike machine can now use
> OpenSBI firmware BIN as bios.

Cool!

I think that means we can remove the elfs from QEMU.

>
> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> ---
>  hw/char/riscv_htif.c         | 33 +++++++++++++++++++----------
>  hw/riscv/spike.c             | 41 ++++++++++++++++++++++--------------
>  include/hw/char/riscv_htif.h |  5 ++++-
>  include/hw/riscv/spike.h     |  1 +
>  4 files changed, 52 insertions(+), 28 deletions(-)
>
> diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c
> index ddae738d56..b59d321fb7 100644
> --- a/hw/char/riscv_htif.c
> +++ b/hw/char/riscv_htif.c
> @@ -228,13 +228,25 @@ static const MemoryRegionOps htif_mm_ops = {
>      .write = htif_mm_write,
>  };
>
> +bool htif_uses_elf_symbols(void)
> +{
> +    return (address_symbol_set == 3) ? true : false;
> +}
> +
>  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> -    CPURISCVState *env, Chardev *chr)
> +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base)
>  {
> -    uint64_t base = MIN(tohost_addr, fromhost_addr);
> -    uint64_t size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> -    uint64_t tohost_offset = tohost_addr - base;
> -    uint64_t fromhost_offset = fromhost_addr - base;
> +    uint64_t base, size, tohost_offset, fromhost_offset;
> +
> +    if (address_symbol_set != 3) {

Why not use htif_uses_elf_symbols() ?

Alistair

> +        fromhost_addr = nonelf_base;
> +        tohost_addr = nonelf_base + 8;
> +    }
> +
> +    base = MIN(tohost_addr, fromhost_addr);
> +    size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> +    tohost_offset = tohost_addr - base;
> +    fromhost_offset = fromhost_addr - base;
>
>      HTIFState *s = g_malloc0(sizeof(HTIFState));
>      s->address_space = address_space;
> @@ -249,12 +261,11 @@ HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
>      qemu_chr_fe_init(&s->chr, chr, &error_abort);
>      qemu_chr_fe_set_handlers(&s->chr, htif_can_recv, htif_recv, htif_event,
>          htif_be_change, s, NULL, true);
> -    if (address_symbol_set == 3) {
> -        memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> -                              TYPE_HTIF_UART, size);
> -        memory_region_add_subregion_overlap(address_space, base,
> -                                            &s->mmio, 1);
> -    }
> +
> +    memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> +                          TYPE_HTIF_UART, size);
> +    memory_region_add_subregion_overlap(address_space, base,
> +                                        &s->mmio, 1);
>
>      return s;
>  }
> diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
> index 288d69cd9f..597df4c288 100644
> --- a/hw/riscv/spike.c
> +++ b/hw/riscv/spike.c
> @@ -42,6 +42,7 @@
>
>  static const MemMapEntry spike_memmap[] = {
>      [SPIKE_MROM] =     {     0x1000,     0xf000 },
> +    [SPIKE_HTIF] =     {  0x1000000,     0x1000 },
>      [SPIKE_CLINT] =    {  0x2000000,    0x10000 },
>      [SPIKE_DRAM] =     { 0x80000000,        0x0 },
>  };
> @@ -75,6 +76,10 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
>
>      qemu_fdt_add_subnode(fdt, "/htif");
>      qemu_fdt_setprop_string(fdt, "/htif", "compatible", "ucb,htif0");
> +    if (!htif_uses_elf_symbols()) {
> +        qemu_fdt_setprop_cells(fdt, "/htif", "reg",
> +            0x0, memmap[SPIKE_HTIF].base, 0x0, memmap[SPIKE_HTIF].size);
> +    }
>
>      qemu_fdt_add_subnode(fdt, "/soc");
>      qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
> @@ -172,6 +177,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
>      if (cmdline) {
>          qemu_fdt_add_subnode(fdt, "/chosen");
>          qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
> +        qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", "/htif");
>      }
>  }
>
> @@ -241,10 +247,6 @@ static void spike_board_init(MachineState *machine)
>      memory_region_add_subregion(system_memory, memmap[SPIKE_DRAM].base,
>          machine->ram);
>
> -    /* create device tree */
> -    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> -               riscv_is_32bit(&s->soc[0]));
> -
>      /* boot rom */
>      memory_region_init_rom(mask_rom, NULL, "riscv.spike.mrom",
>                             memmap[SPIKE_MROM].size, &error_fatal);
> @@ -266,6 +268,7 @@ static void spike_board_init(MachineState *machine)
>                                      htif_symbol_callback);
>      }
>
> +    /* Load kernel */
>      if (machine->kernel_filename) {
>          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
>                                                           firmware_end_addr);
> @@ -273,17 +276,6 @@ static void spike_board_init(MachineState *machine)
>          kernel_entry = riscv_load_kernel(machine->kernel_filename,
>                                           kernel_start_addr,
>                                           htif_symbol_callback);
> -
> -        if (machine->initrd_filename) {
> -            hwaddr start;
> -            hwaddr end = riscv_load_initrd(machine->initrd_filename,
> -                                           machine->ram_size, kernel_entry,
> -                                           &start);
> -            qemu_fdt_setprop_cell(s->fdt, "/chosen",
> -                                  "linux,initrd-start", start);
> -            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> -                                  end);
> -        }
>      } else {
>         /*
>          * If dynamic firmware is used, it doesn't know where is the next mode
> @@ -292,6 +284,22 @@ static void spike_board_init(MachineState *machine)
>          kernel_entry = 0;
>      }
>
> +    /* Create device tree */
> +    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> +               riscv_is_32bit(&s->soc[0]));
> +
> +    /* Load initrd */
> +    if (machine->kernel_filename && machine->initrd_filename) {
> +        hwaddr start;
> +        hwaddr end = riscv_load_initrd(machine->initrd_filename,
> +                                       machine->ram_size, kernel_entry,
> +                                       &start);
> +        qemu_fdt_setprop_cell(s->fdt, "/chosen",
> +                              "linux,initrd-start", start);
> +        qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> +                              end);
> +    }
> +
>      /* Compute the fdt load address in dram */
>      fdt_load_addr = riscv_load_fdt(memmap[SPIKE_DRAM].base,
>                                     machine->ram_size, s->fdt);
> @@ -303,7 +311,8 @@ static void spike_board_init(MachineState *machine)
>
>      /* initialize HTIF using symbols found in load_kernel */
>      htif_mm_init(system_memory, mask_rom,
> -                 &s->soc[0].harts[0].env, serial_hd(0));
> +                 &s->soc[0].harts[0].env, serial_hd(0),
> +                 memmap[SPIKE_HTIF].base);
>  }
>
>  static void spike_machine_instance_init(Object *obj)
> diff --git a/include/hw/char/riscv_htif.h b/include/hw/char/riscv_htif.h
> index fb9452cf51..f888ac1b30 100644
> --- a/include/hw/char/riscv_htif.h
> +++ b/include/hw/char/riscv_htif.h
> @@ -52,8 +52,11 @@ extern const MemoryRegionOps htif_io_ops;
>  void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
>      uint64_t st_size);
>
> +/* Check if HTIF uses ELF symbols */
> +bool htif_uses_elf_symbols(void);
> +
>  /* legacy pre qom */
>  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> -    CPURISCVState *env, Chardev *chr);
> +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base);
>
>  #endif
> diff --git a/include/hw/riscv/spike.h b/include/hw/riscv/spike.h
> index cdd1a13011..73d69234de 100644
> --- a/include/hw/riscv/spike.h
> +++ b/include/hw/riscv/spike.h
> @@ -43,6 +43,7 @@ struct SpikeState {
>
>  enum {
>      SPIKE_MROM,
> +    SPIKE_HTIF,
>      SPIKE_CLINT,
>      SPIKE_DRAM
>  };
> --
> 2.25.1
>
>

Re: [PATCH] hw/riscv: spike: Allow using binary firmware as bios

Posted by Anup Patel 1 week, 2 days ago
On Tue, Jan 18, 2022 at 10:50 AM Alistair Francis <alistair23@gmail.com> wrote:
>
> On Sat, Jan 15, 2022 at 2:18 AM Anup Patel <apatel@ventanamicro.com> wrote:
> >
> > Currently, we have to use OpenSBI firmware ELF as bios for the spike
> > machine because the HTIF console requires ELF for parsing "fromhost"
> > and "tohost" symbols.
> >
> > The latest OpenSBI can now optionally pick-up HTIF register address
> > from HTIF DT node so using this feature spike machine can now use
> > OpenSBI firmware BIN as bios.
>
> Cool!
>
> I think that means we can remove the elfs from QEMU.

Yes, we can definitely remove the ELFs from QEMU.

>
> >
> > Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> > ---
> >  hw/char/riscv_htif.c         | 33 +++++++++++++++++++----------
> >  hw/riscv/spike.c             | 41 ++++++++++++++++++++++--------------
> >  include/hw/char/riscv_htif.h |  5 ++++-
> >  include/hw/riscv/spike.h     |  1 +
> >  4 files changed, 52 insertions(+), 28 deletions(-)
> >
> > diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c
> > index ddae738d56..b59d321fb7 100644
> > --- a/hw/char/riscv_htif.c
> > +++ b/hw/char/riscv_htif.c
> > @@ -228,13 +228,25 @@ static const MemoryRegionOps htif_mm_ops = {
> >      .write = htif_mm_write,
> >  };
> >
> > +bool htif_uses_elf_symbols(void)
> > +{
> > +    return (address_symbol_set == 3) ? true : false;
> > +}
> > +
> >  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > -    CPURISCVState *env, Chardev *chr)
> > +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base)
> >  {
> > -    uint64_t base = MIN(tohost_addr, fromhost_addr);
> > -    uint64_t size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> > -    uint64_t tohost_offset = tohost_addr - base;
> > -    uint64_t fromhost_offset = fromhost_addr - base;
> > +    uint64_t base, size, tohost_offset, fromhost_offset;
> > +
> > +    if (address_symbol_set != 3) {
>
> Why not use htif_uses_elf_symbols() ?

Ahh, yes.

I should have used htif_uses_elf_symbols() here. I will update
it in the next revision.

Regards,
Anup

>
> Alistair
>
> > +        fromhost_addr = nonelf_base;
> > +        tohost_addr = nonelf_base + 8;
> > +    }
> > +
> > +    base = MIN(tohost_addr, fromhost_addr);
> > +    size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> > +    tohost_offset = tohost_addr - base;
> > +    fromhost_offset = fromhost_addr - base;
> >
> >      HTIFState *s = g_malloc0(sizeof(HTIFState));
> >      s->address_space = address_space;
> > @@ -249,12 +261,11 @@ HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> >      qemu_chr_fe_init(&s->chr, chr, &error_abort);
> >      qemu_chr_fe_set_handlers(&s->chr, htif_can_recv, htif_recv, htif_event,
> >          htif_be_change, s, NULL, true);
> > -    if (address_symbol_set == 3) {
> > -        memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> > -                              TYPE_HTIF_UART, size);
> > -        memory_region_add_subregion_overlap(address_space, base,
> > -                                            &s->mmio, 1);
> > -    }
> > +
> > +    memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> > +                          TYPE_HTIF_UART, size);
> > +    memory_region_add_subregion_overlap(address_space, base,
> > +                                        &s->mmio, 1);
> >
> >      return s;
> >  }
> > diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
> > index 288d69cd9f..597df4c288 100644
> > --- a/hw/riscv/spike.c
> > +++ b/hw/riscv/spike.c
> > @@ -42,6 +42,7 @@
> >
> >  static const MemMapEntry spike_memmap[] = {
> >      [SPIKE_MROM] =     {     0x1000,     0xf000 },
> > +    [SPIKE_HTIF] =     {  0x1000000,     0x1000 },
> >      [SPIKE_CLINT] =    {  0x2000000,    0x10000 },
> >      [SPIKE_DRAM] =     { 0x80000000,        0x0 },
> >  };
> > @@ -75,6 +76,10 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
> >
> >      qemu_fdt_add_subnode(fdt, "/htif");
> >      qemu_fdt_setprop_string(fdt, "/htif", "compatible", "ucb,htif0");
> > +    if (!htif_uses_elf_symbols()) {
> > +        qemu_fdt_setprop_cells(fdt, "/htif", "reg",
> > +            0x0, memmap[SPIKE_HTIF].base, 0x0, memmap[SPIKE_HTIF].size);
> > +    }
> >
> >      qemu_fdt_add_subnode(fdt, "/soc");
> >      qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
> > @@ -172,6 +177,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
> >      if (cmdline) {
> >          qemu_fdt_add_subnode(fdt, "/chosen");
> >          qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
> > +        qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", "/htif");
> >      }
> >  }
> >
> > @@ -241,10 +247,6 @@ static void spike_board_init(MachineState *machine)
> >      memory_region_add_subregion(system_memory, memmap[SPIKE_DRAM].base,
> >          machine->ram);
> >
> > -    /* create device tree */
> > -    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> > -               riscv_is_32bit(&s->soc[0]));
> > -
> >      /* boot rom */
> >      memory_region_init_rom(mask_rom, NULL, "riscv.spike.mrom",
> >                             memmap[SPIKE_MROM].size, &error_fatal);
> > @@ -266,6 +268,7 @@ static void spike_board_init(MachineState *machine)
> >                                      htif_symbol_callback);
> >      }
> >
> > +    /* Load kernel */
> >      if (machine->kernel_filename) {
> >          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
> >                                                           firmware_end_addr);
> > @@ -273,17 +276,6 @@ static void spike_board_init(MachineState *machine)
> >          kernel_entry = riscv_load_kernel(machine->kernel_filename,
> >                                           kernel_start_addr,
> >                                           htif_symbol_callback);
> > -
> > -        if (machine->initrd_filename) {
> > -            hwaddr start;
> > -            hwaddr end = riscv_load_initrd(machine->initrd_filename,
> > -                                           machine->ram_size, kernel_entry,
> > -                                           &start);
> > -            qemu_fdt_setprop_cell(s->fdt, "/chosen",
> > -                                  "linux,initrd-start", start);
> > -            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> > -                                  end);
> > -        }
> >      } else {
> >         /*
> >          * If dynamic firmware is used, it doesn't know where is the next mode
> > @@ -292,6 +284,22 @@ static void spike_board_init(MachineState *machine)
> >          kernel_entry = 0;
> >      }
> >
> > +    /* Create device tree */
> > +    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> > +               riscv_is_32bit(&s->soc[0]));
> > +
> > +    /* Load initrd */
> > +    if (machine->kernel_filename && machine->initrd_filename) {
> > +        hwaddr start;
> > +        hwaddr end = riscv_load_initrd(machine->initrd_filename,
> > +                                       machine->ram_size, kernel_entry,
> > +                                       &start);
> > +        qemu_fdt_setprop_cell(s->fdt, "/chosen",
> > +                              "linux,initrd-start", start);
> > +        qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> > +                              end);
> > +    }
> > +
> >      /* Compute the fdt load address in dram */
> >      fdt_load_addr = riscv_load_fdt(memmap[SPIKE_DRAM].base,
> >                                     machine->ram_size, s->fdt);
> > @@ -303,7 +311,8 @@ static void spike_board_init(MachineState *machine)
> >
> >      /* initialize HTIF using symbols found in load_kernel */
> >      htif_mm_init(system_memory, mask_rom,
> > -                 &s->soc[0].harts[0].env, serial_hd(0));
> > +                 &s->soc[0].harts[0].env, serial_hd(0),
> > +                 memmap[SPIKE_HTIF].base);
> >  }
> >
> >  static void spike_machine_instance_init(Object *obj)
> > diff --git a/include/hw/char/riscv_htif.h b/include/hw/char/riscv_htif.h
> > index fb9452cf51..f888ac1b30 100644
> > --- a/include/hw/char/riscv_htif.h
> > +++ b/include/hw/char/riscv_htif.h
> > @@ -52,8 +52,11 @@ extern const MemoryRegionOps htif_io_ops;
> >  void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
> >      uint64_t st_size);
> >
> > +/* Check if HTIF uses ELF symbols */
> > +bool htif_uses_elf_symbols(void);
> > +
> >  /* legacy pre qom */
> >  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > -    CPURISCVState *env, Chardev *chr);
> > +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base);
> >
> >  #endif
> > diff --git a/include/hw/riscv/spike.h b/include/hw/riscv/spike.h
> > index cdd1a13011..73d69234de 100644
> > --- a/include/hw/riscv/spike.h
> > +++ b/include/hw/riscv/spike.h
> > @@ -43,6 +43,7 @@ struct SpikeState {
> >
> >  enum {
> >      SPIKE_MROM,
> > +    SPIKE_HTIF,
> >      SPIKE_CLINT,
> >      SPIKE_DRAM
> >  };
> > --
> > 2.25.1
> >
> >

Re: [PATCH] hw/riscv: spike: Allow using binary firmware as bios

Posted by Alistair Francis 1 week, 2 days ago
On Tue, Jan 18, 2022 at 3:27 PM Anup Patel <anup@brainfault.org> wrote:
>
> On Tue, Jan 18, 2022 at 10:50 AM Alistair Francis <alistair23@gmail.com> wrote:
> >
> > On Sat, Jan 15, 2022 at 2:18 AM Anup Patel <apatel@ventanamicro.com> wrote:
> > >
> > > Currently, we have to use OpenSBI firmware ELF as bios for the spike
> > > machine because the HTIF console requires ELF for parsing "fromhost"
> > > and "tohost" symbols.
> > >
> > > The latest OpenSBI can now optionally pick-up HTIF register address
> > > from HTIF DT node so using this feature spike machine can now use
> > > OpenSBI firmware BIN as bios.
> >
> > Cool!
> >
> > I think that means we can remove the elfs from QEMU.
>
> Yes, we can definitely remove the ELFs from QEMU.

Ha, I mostly meant can you do that? :P

Alistair

>
> >
> > >
> > > Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> > > ---
> > >  hw/char/riscv_htif.c         | 33 +++++++++++++++++++----------
> > >  hw/riscv/spike.c             | 41 ++++++++++++++++++++++--------------
> > >  include/hw/char/riscv_htif.h |  5 ++++-
> > >  include/hw/riscv/spike.h     |  1 +
> > >  4 files changed, 52 insertions(+), 28 deletions(-)
> > >
> > > diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c
> > > index ddae738d56..b59d321fb7 100644
> > > --- a/hw/char/riscv_htif.c
> > > +++ b/hw/char/riscv_htif.c
> > > @@ -228,13 +228,25 @@ static const MemoryRegionOps htif_mm_ops = {
> > >      .write = htif_mm_write,
> > >  };
> > >
> > > +bool htif_uses_elf_symbols(void)
> > > +{
> > > +    return (address_symbol_set == 3) ? true : false;
> > > +}
> > > +
> > >  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > > -    CPURISCVState *env, Chardev *chr)
> > > +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base)
> > >  {
> > > -    uint64_t base = MIN(tohost_addr, fromhost_addr);
> > > -    uint64_t size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> > > -    uint64_t tohost_offset = tohost_addr - base;
> > > -    uint64_t fromhost_offset = fromhost_addr - base;
> > > +    uint64_t base, size, tohost_offset, fromhost_offset;
> > > +
> > > +    if (address_symbol_set != 3) {
> >
> > Why not use htif_uses_elf_symbols() ?
>
> Ahh, yes.
>
> I should have used htif_uses_elf_symbols() here. I will update
> it in the next revision.
>
> Regards,
> Anup
>
> >
> > Alistair
> >
> > > +        fromhost_addr = nonelf_base;
> > > +        tohost_addr = nonelf_base + 8;
> > > +    }
> > > +
> > > +    base = MIN(tohost_addr, fromhost_addr);
> > > +    size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> > > +    tohost_offset = tohost_addr - base;
> > > +    fromhost_offset = fromhost_addr - base;
> > >
> > >      HTIFState *s = g_malloc0(sizeof(HTIFState));
> > >      s->address_space = address_space;
> > > @@ -249,12 +261,11 @@ HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > >      qemu_chr_fe_init(&s->chr, chr, &error_abort);
> > >      qemu_chr_fe_set_handlers(&s->chr, htif_can_recv, htif_recv, htif_event,
> > >          htif_be_change, s, NULL, true);
> > > -    if (address_symbol_set == 3) {
> > > -        memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> > > -                              TYPE_HTIF_UART, size);
> > > -        memory_region_add_subregion_overlap(address_space, base,
> > > -                                            &s->mmio, 1);
> > > -    }
> > > +
> > > +    memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> > > +                          TYPE_HTIF_UART, size);
> > > +    memory_region_add_subregion_overlap(address_space, base,
> > > +                                        &s->mmio, 1);
> > >
> > >      return s;
> > >  }
> > > diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
> > > index 288d69cd9f..597df4c288 100644
> > > --- a/hw/riscv/spike.c
> > > +++ b/hw/riscv/spike.c
> > > @@ -42,6 +42,7 @@
> > >
> > >  static const MemMapEntry spike_memmap[] = {
> > >      [SPIKE_MROM] =     {     0x1000,     0xf000 },
> > > +    [SPIKE_HTIF] =     {  0x1000000,     0x1000 },
> > >      [SPIKE_CLINT] =    {  0x2000000,    0x10000 },
> > >      [SPIKE_DRAM] =     { 0x80000000,        0x0 },
> > >  };
> > > @@ -75,6 +76,10 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
> > >
> > >      qemu_fdt_add_subnode(fdt, "/htif");
> > >      qemu_fdt_setprop_string(fdt, "/htif", "compatible", "ucb,htif0");
> > > +    if (!htif_uses_elf_symbols()) {
> > > +        qemu_fdt_setprop_cells(fdt, "/htif", "reg",
> > > +            0x0, memmap[SPIKE_HTIF].base, 0x0, memmap[SPIKE_HTIF].size);
> > > +    }
> > >
> > >      qemu_fdt_add_subnode(fdt, "/soc");
> > >      qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
> > > @@ -172,6 +177,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
> > >      if (cmdline) {
> > >          qemu_fdt_add_subnode(fdt, "/chosen");
> > >          qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
> > > +        qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", "/htif");
> > >      }
> > >  }
> > >
> > > @@ -241,10 +247,6 @@ static void spike_board_init(MachineState *machine)
> > >      memory_region_add_subregion(system_memory, memmap[SPIKE_DRAM].base,
> > >          machine->ram);
> > >
> > > -    /* create device tree */
> > > -    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> > > -               riscv_is_32bit(&s->soc[0]));
> > > -
> > >      /* boot rom */
> > >      memory_region_init_rom(mask_rom, NULL, "riscv.spike.mrom",
> > >                             memmap[SPIKE_MROM].size, &error_fatal);
> > > @@ -266,6 +268,7 @@ static void spike_board_init(MachineState *machine)
> > >                                      htif_symbol_callback);
> > >      }
> > >
> > > +    /* Load kernel */
> > >      if (machine->kernel_filename) {
> > >          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
> > >                                                           firmware_end_addr);
> > > @@ -273,17 +276,6 @@ static void spike_board_init(MachineState *machine)
> > >          kernel_entry = riscv_load_kernel(machine->kernel_filename,
> > >                                           kernel_start_addr,
> > >                                           htif_symbol_callback);
> > > -
> > > -        if (machine->initrd_filename) {
> > > -            hwaddr start;
> > > -            hwaddr end = riscv_load_initrd(machine->initrd_filename,
> > > -                                           machine->ram_size, kernel_entry,
> > > -                                           &start);
> > > -            qemu_fdt_setprop_cell(s->fdt, "/chosen",
> > > -                                  "linux,initrd-start", start);
> > > -            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> > > -                                  end);
> > > -        }
> > >      } else {
> > >         /*
> > >          * If dynamic firmware is used, it doesn't know where is the next mode
> > > @@ -292,6 +284,22 @@ static void spike_board_init(MachineState *machine)
> > >          kernel_entry = 0;
> > >      }
> > >
> > > +    /* Create device tree */
> > > +    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> > > +               riscv_is_32bit(&s->soc[0]));
> > > +
> > > +    /* Load initrd */
> > > +    if (machine->kernel_filename && machine->initrd_filename) {
> > > +        hwaddr start;
> > > +        hwaddr end = riscv_load_initrd(machine->initrd_filename,
> > > +                                       machine->ram_size, kernel_entry,
> > > +                                       &start);
> > > +        qemu_fdt_setprop_cell(s->fdt, "/chosen",
> > > +                              "linux,initrd-start", start);
> > > +        qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> > > +                              end);
> > > +    }
> > > +
> > >      /* Compute the fdt load address in dram */
> > >      fdt_load_addr = riscv_load_fdt(memmap[SPIKE_DRAM].base,
> > >                                     machine->ram_size, s->fdt);
> > > @@ -303,7 +311,8 @@ static void spike_board_init(MachineState *machine)
> > >
> > >      /* initialize HTIF using symbols found in load_kernel */
> > >      htif_mm_init(system_memory, mask_rom,
> > > -                 &s->soc[0].harts[0].env, serial_hd(0));
> > > +                 &s->soc[0].harts[0].env, serial_hd(0),
> > > +                 memmap[SPIKE_HTIF].base);
> > >  }
> > >
> > >  static void spike_machine_instance_init(Object *obj)
> > > diff --git a/include/hw/char/riscv_htif.h b/include/hw/char/riscv_htif.h
> > > index fb9452cf51..f888ac1b30 100644
> > > --- a/include/hw/char/riscv_htif.h
> > > +++ b/include/hw/char/riscv_htif.h
> > > @@ -52,8 +52,11 @@ extern const MemoryRegionOps htif_io_ops;
> > >  void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
> > >      uint64_t st_size);
> > >
> > > +/* Check if HTIF uses ELF symbols */
> > > +bool htif_uses_elf_symbols(void);
> > > +
> > >  /* legacy pre qom */
> > >  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > > -    CPURISCVState *env, Chardev *chr);
> > > +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base);
> > >
> > >  #endif
> > > diff --git a/include/hw/riscv/spike.h b/include/hw/riscv/spike.h
> > > index cdd1a13011..73d69234de 100644
> > > --- a/include/hw/riscv/spike.h
> > > +++ b/include/hw/riscv/spike.h
> > > @@ -43,6 +43,7 @@ struct SpikeState {
> > >
> > >  enum {
> > >      SPIKE_MROM,
> > > +    SPIKE_HTIF,
> > >      SPIKE_CLINT,
> > >      SPIKE_DRAM
> > >  };
> > > --
> > > 2.25.1
> > >
> > >

Re: [PATCH] hw/riscv: spike: Allow using binary firmware as bios

Posted by Anup Patel 1 week, 2 days ago
On Tue, Jan 18, 2022 at 11:24 AM Alistair Francis <alistair23@gmail.com> wrote:
>
> On Tue, Jan 18, 2022 at 3:27 PM Anup Patel <anup@brainfault.org> wrote:
> >
> > On Tue, Jan 18, 2022 at 10:50 AM Alistair Francis <alistair23@gmail.com> wrote:
> > >
> > > On Sat, Jan 15, 2022 at 2:18 AM Anup Patel <apatel@ventanamicro.com> wrote:
> > > >
> > > > Currently, we have to use OpenSBI firmware ELF as bios for the spike
> > > > machine because the HTIF console requires ELF for parsing "fromhost"
> > > > and "tohost" symbols.
> > > >
> > > > The latest OpenSBI can now optionally pick-up HTIF register address
> > > > from HTIF DT node so using this feature spike machine can now use
> > > > OpenSBI firmware BIN as bios.
> > >
> > > Cool!
> > >
> > > I think that means we can remove the elfs from QEMU.
> >
> > Yes, we can definitely remove the ELFs from QEMU.
>
> Ha, I mostly meant can you do that? :P

Okay, let me take a stab at it in the next revision.

Regards,
Anup

>
> Alistair
>
> >
> > >
> > > >
> > > > Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> > > > ---
> > > >  hw/char/riscv_htif.c         | 33 +++++++++++++++++++----------
> > > >  hw/riscv/spike.c             | 41 ++++++++++++++++++++++--------------
> > > >  include/hw/char/riscv_htif.h |  5 ++++-
> > > >  include/hw/riscv/spike.h     |  1 +
> > > >  4 files changed, 52 insertions(+), 28 deletions(-)
> > > >
> > > > diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c
> > > > index ddae738d56..b59d321fb7 100644
> > > > --- a/hw/char/riscv_htif.c
> > > > +++ b/hw/char/riscv_htif.c
> > > > @@ -228,13 +228,25 @@ static const MemoryRegionOps htif_mm_ops = {
> > > >      .write = htif_mm_write,
> > > >  };
> > > >
> > > > +bool htif_uses_elf_symbols(void)
> > > > +{
> > > > +    return (address_symbol_set == 3) ? true : false;
> > > > +}
> > > > +
> > > >  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > > > -    CPURISCVState *env, Chardev *chr)
> > > > +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base)
> > > >  {
> > > > -    uint64_t base = MIN(tohost_addr, fromhost_addr);
> > > > -    uint64_t size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> > > > -    uint64_t tohost_offset = tohost_addr - base;
> > > > -    uint64_t fromhost_offset = fromhost_addr - base;
> > > > +    uint64_t base, size, tohost_offset, fromhost_offset;
> > > > +
> > > > +    if (address_symbol_set != 3) {
> > >
> > > Why not use htif_uses_elf_symbols() ?
> >
> > Ahh, yes.
> >
> > I should have used htif_uses_elf_symbols() here. I will update
> > it in the next revision.
> >
> > Regards,
> > Anup
> >
> > >
> > > Alistair
> > >
> > > > +        fromhost_addr = nonelf_base;
> > > > +        tohost_addr = nonelf_base + 8;
> > > > +    }
> > > > +
> > > > +    base = MIN(tohost_addr, fromhost_addr);
> > > > +    size = MAX(tohost_addr + 8, fromhost_addr + 8) - base;
> > > > +    tohost_offset = tohost_addr - base;
> > > > +    fromhost_offset = fromhost_addr - base;
> > > >
> > > >      HTIFState *s = g_malloc0(sizeof(HTIFState));
> > > >      s->address_space = address_space;
> > > > @@ -249,12 +261,11 @@ HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > > >      qemu_chr_fe_init(&s->chr, chr, &error_abort);
> > > >      qemu_chr_fe_set_handlers(&s->chr, htif_can_recv, htif_recv, htif_event,
> > > >          htif_be_change, s, NULL, true);
> > > > -    if (address_symbol_set == 3) {
> > > > -        memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> > > > -                              TYPE_HTIF_UART, size);
> > > > -        memory_region_add_subregion_overlap(address_space, base,
> > > > -                                            &s->mmio, 1);
> > > > -    }
> > > > +
> > > > +    memory_region_init_io(&s->mmio, NULL, &htif_mm_ops, s,
> > > > +                          TYPE_HTIF_UART, size);
> > > > +    memory_region_add_subregion_overlap(address_space, base,
> > > > +                                        &s->mmio, 1);
> > > >
> > > >      return s;
> > > >  }
> > > > diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
> > > > index 288d69cd9f..597df4c288 100644
> > > > --- a/hw/riscv/spike.c
> > > > +++ b/hw/riscv/spike.c
> > > > @@ -42,6 +42,7 @@
> > > >
> > > >  static const MemMapEntry spike_memmap[] = {
> > > >      [SPIKE_MROM] =     {     0x1000,     0xf000 },
> > > > +    [SPIKE_HTIF] =     {  0x1000000,     0x1000 },
> > > >      [SPIKE_CLINT] =    {  0x2000000,    0x10000 },
> > > >      [SPIKE_DRAM] =     { 0x80000000,        0x0 },
> > > >  };
> > > > @@ -75,6 +76,10 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
> > > >
> > > >      qemu_fdt_add_subnode(fdt, "/htif");
> > > >      qemu_fdt_setprop_string(fdt, "/htif", "compatible", "ucb,htif0");
> > > > +    if (!htif_uses_elf_symbols()) {
> > > > +        qemu_fdt_setprop_cells(fdt, "/htif", "reg",
> > > > +            0x0, memmap[SPIKE_HTIF].base, 0x0, memmap[SPIKE_HTIF].size);
> > > > +    }
> > > >
> > > >      qemu_fdt_add_subnode(fdt, "/soc");
> > > >      qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
> > > > @@ -172,6 +177,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap,
> > > >      if (cmdline) {
> > > >          qemu_fdt_add_subnode(fdt, "/chosen");
> > > >          qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
> > > > +        qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", "/htif");
> > > >      }
> > > >  }
> > > >
> > > > @@ -241,10 +247,6 @@ static void spike_board_init(MachineState *machine)
> > > >      memory_region_add_subregion(system_memory, memmap[SPIKE_DRAM].base,
> > > >          machine->ram);
> > > >
> > > > -    /* create device tree */
> > > > -    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> > > > -               riscv_is_32bit(&s->soc[0]));
> > > > -
> > > >      /* boot rom */
> > > >      memory_region_init_rom(mask_rom, NULL, "riscv.spike.mrom",
> > > >                             memmap[SPIKE_MROM].size, &error_fatal);
> > > > @@ -266,6 +268,7 @@ static void spike_board_init(MachineState *machine)
> > > >                                      htif_symbol_callback);
> > > >      }
> > > >
> > > > +    /* Load kernel */
> > > >      if (machine->kernel_filename) {
> > > >          kernel_start_addr = riscv_calc_kernel_start_addr(&s->soc[0],
> > > >                                                           firmware_end_addr);
> > > > @@ -273,17 +276,6 @@ static void spike_board_init(MachineState *machine)
> > > >          kernel_entry = riscv_load_kernel(machine->kernel_filename,
> > > >                                           kernel_start_addr,
> > > >                                           htif_symbol_callback);
> > > > -
> > > > -        if (machine->initrd_filename) {
> > > > -            hwaddr start;
> > > > -            hwaddr end = riscv_load_initrd(machine->initrd_filename,
> > > > -                                           machine->ram_size, kernel_entry,
> > > > -                                           &start);
> > > > -            qemu_fdt_setprop_cell(s->fdt, "/chosen",
> > > > -                                  "linux,initrd-start", start);
> > > > -            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> > > > -                                  end);
> > > > -        }
> > > >      } else {
> > > >         /*
> > > >          * If dynamic firmware is used, it doesn't know where is the next mode
> > > > @@ -292,6 +284,22 @@ static void spike_board_init(MachineState *machine)
> > > >          kernel_entry = 0;
> > > >      }
> > > >
> > > > +    /* Create device tree */
> > > > +    create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline,
> > > > +               riscv_is_32bit(&s->soc[0]));
> > > > +
> > > > +    /* Load initrd */
> > > > +    if (machine->kernel_filename && machine->initrd_filename) {
> > > > +        hwaddr start;
> > > > +        hwaddr end = riscv_load_initrd(machine->initrd_filename,
> > > > +                                       machine->ram_size, kernel_entry,
> > > > +                                       &start);
> > > > +        qemu_fdt_setprop_cell(s->fdt, "/chosen",
> > > > +                              "linux,initrd-start", start);
> > > > +        qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> > > > +                              end);
> > > > +    }
> > > > +
> > > >      /* Compute the fdt load address in dram */
> > > >      fdt_load_addr = riscv_load_fdt(memmap[SPIKE_DRAM].base,
> > > >                                     machine->ram_size, s->fdt);
> > > > @@ -303,7 +311,8 @@ static void spike_board_init(MachineState *machine)
> > > >
> > > >      /* initialize HTIF using symbols found in load_kernel */
> > > >      htif_mm_init(system_memory, mask_rom,
> > > > -                 &s->soc[0].harts[0].env, serial_hd(0));
> > > > +                 &s->soc[0].harts[0].env, serial_hd(0),
> > > > +                 memmap[SPIKE_HTIF].base);
> > > >  }
> > > >
> > > >  static void spike_machine_instance_init(Object *obj)
> > > > diff --git a/include/hw/char/riscv_htif.h b/include/hw/char/riscv_htif.h
> > > > index fb9452cf51..f888ac1b30 100644
> > > > --- a/include/hw/char/riscv_htif.h
> > > > +++ b/include/hw/char/riscv_htif.h
> > > > @@ -52,8 +52,11 @@ extern const MemoryRegionOps htif_io_ops;
> > > >  void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
> > > >      uint64_t st_size);
> > > >
> > > > +/* Check if HTIF uses ELF symbols */
> > > > +bool htif_uses_elf_symbols(void);
> > > > +
> > > >  /* legacy pre qom */
> > > >  HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
> > > > -    CPURISCVState *env, Chardev *chr);
> > > > +    CPURISCVState *env, Chardev *chr, uint64_t nonelf_base);
> > > >
> > > >  #endif
> > > > diff --git a/include/hw/riscv/spike.h b/include/hw/riscv/spike.h
> > > > index cdd1a13011..73d69234de 100644
> > > > --- a/include/hw/riscv/spike.h
> > > > +++ b/include/hw/riscv/spike.h
> > > > @@ -43,6 +43,7 @@ struct SpikeState {
> > > >
> > > >  enum {
> > > >      SPIKE_MROM,
> > > > +    SPIKE_HTIF,
> > > >      SPIKE_CLINT,
> > > >      SPIKE_DRAM
> > > >  };
> > > > --
> > > > 2.25.1
> > > >
> > > >