From: Helge Deller <deller@gmx.de>

Load the 64-bit SeaBIOS-hppa firmware by default when running on a 64-bit
machine. This will enable us to later support more than 4GB of RAM and is
required that the OS (or PALO bootloader) will start or install a 64-bit kernel
instead of a 32-bit kernel.

Note that SeaBIOS-hppa v16 provides the "-fw_cfg opt/OS64,string=3" option with
which the user can control what the firmware shall report back to the OS:
Support of 32-bit OS, support of a 64-bit OS, or support for both (default).

Signed-off-by: Helge Deller <deller@gmx.de>
---
 hw/hppa/machine.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index eb78c46ff1..a47baa572d 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -333,6 +333,7 @@ static void machine_HP_common_init_tail(MachineState *machine, PCIBus *pci_bus,
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
+    const char *firmware = machine->firmware;
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     DeviceState *dev;
     PCIDevice *pci_dev;
@@ -408,9 +409,13 @@ static void machine_HP_common_init_tail(MachineState *machine, PCIBus *pci_bus,
 
     /* Load firmware.  Given that this is not "real" firmware,
        but one explicitly written for the emulation, we might as
-       well load it directly from an ELF image.  */
-    firmware_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS,
-                                       machine->firmware ?: "hppa-firmware.img");
+       well load it directly from an ELF image. Load the 64-bit
+       firmware on 64-bit machines by default if not specified
+       on command line. */
+    if (!firmware) {
+        firmware = lasi_dev ? "hppa-firmware.img" : "hppa-firmware64.img";
+    }
+    firmware_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, firmware);
     if (firmware_filename == NULL) {
         error_report("no firmware provided");
         exit(1);
-- 
2.43.0

On 2/7/24 08:20, deller@kernel.org wrote:
> From: Helge Deller<deller@gmx.de>
> 
> Load the 64-bit SeaBIOS-hppa firmware by default when running on a 64-bit
> machine. This will enable us to later support more than 4GB of RAM and is
> required that the OS (or PALO bootloader) will start or install a 64-bit kernel
> instead of a 32-bit kernel.
> 
> Note that SeaBIOS-hppa v16 provides the "-fw_cfg opt/OS64,string=3" option with
> which the user can control what the firmware shall report back to the OS:
> Support of 32-bit OS, support of a 64-bit OS, or support for both (default).
> 
> Signed-off-by: Helge Deller<deller@gmx.de>
> ---
>   hw/hppa/machine.c | 11 ++++++++---
>   1 file changed, 8 insertions(+), 3 deletions(-)

Acked-by: Richard Henderson <richard.henderson@linaro.org>

r~