[PATCH 4/6] hw/hppa: Introduce HppaMachineState::boot_info::firmware structure

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

Current code uses CPUHPPAState::@kernel_entry to hold either:
 - kernel entry virtual address
 - firmware interactive mode
and CPUHPPAState::@cmdline_or_bootorder to hold either:
 - kernel &cmdline physical address
 - firmware boot order

Besides, these variables don't belong to CPUHPPAState, they
depend on how the machine is started, and only apply to the
first CPU.

Introduce firmware specific fields in HppaMachineState, using
their correct type. Introduce the @is_kernel field, to allow
distinguishing between firmware or kernel mode.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/hppa/machine.c | 36 ++++++++++++++++++++++++++++--------
 1 file changed, 28 insertions(+), 8 deletions(-)

diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index a2996ef7682..138cd97efd9 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -41,6 +41,16 @@ OBJECT_DECLARE_SIMPLE_TYPE(HppaMachineState, HPPA_COMMON_MACHINE)
 
 struct HppaMachineState {
     MachineState parent_obj;
+
+    struct {
+        bool is_kernel; /* kernel:1 firmware:0 */
+        union {
+            struct {
+                char bootorder;
+                bool interactive_mode;
+            } firmware;
+        };
+    } boot_info;
 };
 
 #define MIN_SEABIOS_HPPA_VERSION 12 /* require at least this fw version */
@@ -356,6 +366,7 @@ static void machine_HP_common_init_tail(MachineState *machine, PCIBus *pci_bus,
     const char *initrd_filename = machine->initrd_filename;
     const char *firmware = machine->firmware;
     MachineClass *mc = MACHINE_GET_CLASS(machine);
+    HppaMachineState *hms = HPPA_COMMON_MACHINE(machine);
     DeviceState *dev;
     PCIDevice *pci_dev;
     char *firmware_filename;
@@ -481,6 +492,7 @@ static void machine_HP_common_init_tail(MachineState *machine, PCIBus *pci_bus,
                       "-0x%08" PRIx64 ", entry at 0x%08" PRIx64
                       ", size %" PRIu64 " kB\n",
                       kernel_low, kernel_high, kernel_entry, size / KiB);
+        hms->boot_info.is_kernel = true;
 
         if (kernel_cmdline) {
             cpu[0]->env.cmdline_or_bootorder = 0x4000;
@@ -519,13 +531,15 @@ static void machine_HP_common_init_tail(MachineState *machine, PCIBus *pci_bus,
         }
     }
 
-    if (!kernel_entry) {
+    if (!hms->boot_info.is_kernel) {
         /* When booting via firmware, tell firmware if we want interactive
-         * mode (kernel_entry=1), and to boot from CD (cmdline_or_bootorder='d')
-         * or hard disc (cmdline_or_bootorder='c').
+         * mode (interactive_mode=1), and to boot from CD (bootorder='d')
+         * or hard disc (bootorder='c').
          */
-        kernel_entry = machine->boot_config.has_menu ? machine->boot_config.menu : 0;
-        cpu[0]->env.cmdline_or_bootorder = machine->boot_config.order[0];
+        hms->boot_info.firmware.interactive_mode = machine->boot_config.has_menu
+                                                  ? machine->boot_config.menu
+                                                  : 0;
+        hms->boot_info.firmware.bootorder = machine->boot_config.order[0];
     }
 
     /* Keep initial kernel_entry for first boot */
@@ -648,6 +662,7 @@ static void machine_HP_C3700_init(MachineState *machine)
 static void hppa_machine_reset(MachineState *ms, ResetType type)
 {
     MachineClass *mc = MACHINE_GET_CLASS(ms);
+    HppaMachineState *hms = HPPA_COMMON_MACHINE(ms);
     unsigned int smp_cpus = ms->smp.cpus;
     int i;
 
@@ -668,8 +683,12 @@ static void hppa_machine_reset(MachineState *ms, ResetType type)
     }
 
     cpu[0]->env.gr[26] = ms->ram_size;
-    cpu[0]->env.gr[25] = cpu[0]->env.kernel_entry;
-    cpu[0]->env.gr[24] = cpu[0]->env.cmdline_or_bootorder;
+    cpu[0]->env.gr[25] = hms->boot_info.is_kernel
+                         ? cpu[0]->env.kernel_entry
+                         : hms->boot_info.firmware.interactive_mode;
+    cpu[0]->env.gr[24] = hms->boot_info.is_kernel
+                         ? cpu[0]->env.cmdline_or_bootorder
+                         : hms->boot_info.firmware.bootorder;
     cpu[0]->env.gr[23] = cpu[0]->env.initrd_base;
     cpu[0]->env.gr[22] = cpu[0]->env.initrd_end;
     cpu[0]->env.gr[21] = smp_cpus;
@@ -679,7 +698,8 @@ static void hppa_machine_reset(MachineState *ms, ResetType type)
     cpu[0]->env.kernel_entry = 0;
     cpu[0]->env.initrd_base = 0;
     cpu[0]->env.initrd_end = 0;
-    cpu[0]->env.cmdline_or_bootorder = mc->default_boot_order[0];
+    cpu[0]->env.cmdline_or_bootorder = 0;
+    hms->boot_info.firmware.bootorder = mc->default_boot_order[0];
 }
 
 static void hppa_nmi(NMIState *n, int cpu_index, Error **errp)
-- 
2.51.0