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[v3,10/11] hw/ppc/pegasos2: Let pegasos2 machine configure SuperI/O functions

Message ID 20231221150750.5435-11-shentey@gmail.com
State New
Headers show
Series hw/isa/vt82c686: Implement relocation and toggling of SuperI/O functions | expand

Commit Message

Bernhard Beschow Dec. 21, 2023, 3:07 p.m. UTC 
This is a preparation for implementing relocation and toggling of SuperI/O
functions in the VT8231 device model. Upon reset, all SuperI/O functions will be
deactivated, so in case if no -bios is given, let the machine configure those
functions the same way Pegasos II firmware would do.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
 hw/ppc/pegasos2.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
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Patch

diff --git a/hw/ppc/pegasos2.c b/hw/ppc/pegasos2.c
index 3203a4a728..0a40ebd542 100644
--- a/hw/ppc/pegasos2.c
+++ b/hw/ppc/pegasos2.c
@@ -285,6 +285,15 @@  static void pegasos2_pci_config_write(Pegasos2MachineState *pm, int bus,
     pegasos2_mv_reg_write(pm, pcicfg + 4, len, val);
 }
 
+static void pegasos2_superio_write(Pegasos2MachineState *pm, uint32_t addr,
+                                   uint32_t val)
+{
+    AddressSpace *as = CPU(pm->cpu)->as;
+
+    stb_phys(as, PCI1_IO_BASE + 0x3f0, addr);
+    stb_phys(as, PCI1_IO_BASE + 0x3f1, val);
+}
+
 static void pegasos2_machine_reset(MachineState *machine, ShutdownCause reason)
 {
     Pegasos2MachineState *pm = PEGASOS2_MACHINE(machine);
@@ -310,6 +319,12 @@  static void pegasos2_machine_reset(MachineState *machine, ShutdownCause reason)
 
     pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 0) << 8) |
                               PCI_INTERRUPT_LINE, 2, 0x9);
+    pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 0) << 8) |
+                              0x50, 1, 0x6);
+    pegasos2_superio_write(pm, 0xf4, 0xbe);
+    pegasos2_superio_write(pm, 0xf6, 0xef);
+    pegasos2_superio_write(pm, 0xf7, 0xfc);
+    pegasos2_superio_write(pm, 0xf2, 0x14);
     pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 0) << 8) |
                               0x50, 1, 0x2);
     pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 0) << 8) |