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authorCédric Le Goater <clg@kaod.org>2021-01-26 18:10:59 +0100
committerDavid Gibson <david@gibson.dropbear.id.au>2021-02-10 10:43:50 +1100
commit032c226bc6de2be0d5c88940ca7534a80cf0dd1a (patch)
treed8160762feea34ae09af0f2974c79487943449a8
parent8304ab79054fd96ba0b8bd5ba14aa5100b01c212 (diff)
downloadfocaccia-qemu-032c226bc6de2be0d5c88940ca7534a80cf0dd1a.tar.gz
focaccia-qemu-032c226bc6de2be0d5c88940ca7534a80cf0dd1a.zip
ppc/pnv: Introduce a LPC FW memory region attribute to map the PNOR
This to map the PNOR from the machine init handler directly and finish
the cleanup of the LPC model.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20210126171059.307867-8-clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
-rw-r--r--hw/ppc/pnv.c11
-rw-r--r--hw/ppc/pnv_lpc.c7
-rw-r--r--include/hw/ppc/pnv.h1
3 files changed, 12 insertions, 7 deletions
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index e500c2e243..50810df838 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -872,6 +872,14 @@ static void pnv_init(MachineState *machine)
     }
 
     /*
+     * The PNOR is mapped on the LPC FW address space by the BMC.
+     * Since we can not reach the remote BMC machine with LPC memops,
+     * map it always for now.
+     */
+    memory_region_add_subregion(pnv->chips[0]->fw_mr, PNOR_SPI_OFFSET,
+                                &pnv->pnor->mmio);
+
+    /*
      * OpenPOWER systems use a IPMI SEL Event message to notify the
      * host to powerdown
      */
@@ -1150,6 +1158,7 @@ static void pnv_chip_power8_realize(DeviceState *dev, Error **errp)
     qdev_realize(DEVICE(&chip8->lpc), NULL, &error_fatal);
     pnv_xscom_add_subregion(chip, PNV_XSCOM_LPC_BASE, &chip8->lpc.xscom_regs);
 
+    chip->fw_mr = &chip8->lpc.isa_fw;
     chip->dt_isa_nodename = g_strdup_printf("/xscom@%" PRIx64 "/isa@%x",
                                             (uint64_t) PNV_XSCOM_BASE(chip),
                                             PNV_XSCOM_LPC_BASE);
@@ -1479,6 +1488,7 @@ static void pnv_chip_power9_realize(DeviceState *dev, Error **errp)
     memory_region_add_subregion(get_system_memory(), PNV9_LPCM_BASE(chip),
                                 &chip9->lpc.xscom_regs);
 
+    chip->fw_mr = &chip9->lpc.isa_fw;
     chip->dt_isa_nodename = g_strdup_printf("/lpcm-opb@%" PRIx64 "/lpc@0",
                                             (uint64_t) PNV9_LPCM_BASE(chip));
 
@@ -1592,6 +1602,7 @@ static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
     memory_region_add_subregion(get_system_memory(), PNV10_LPCM_BASE(chip),
                                 &chip10->lpc.xscom_regs);
 
+    chip->fw_mr = &chip10->lpc.isa_fw;
     chip->dt_isa_nodename = g_strdup_printf("/lpcm-opb@%" PRIx64 "/lpc@0",
                                             (uint64_t) PNV10_LPCM_BASE(chip));
 }
diff --git a/hw/ppc/pnv_lpc.c b/hw/ppc/pnv_lpc.c
index 11739e397b..bcbca3db97 100644
--- a/hw/ppc/pnv_lpc.c
+++ b/hw/ppc/pnv_lpc.c
@@ -824,7 +824,6 @@ ISABus *pnv_lpc_isa_create(PnvLpcController *lpc, bool use_cpld, Error **errp)
     ISABus *isa_bus;
     qemu_irq *irqs;
     qemu_irq_handler handler;
-    PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
 
     /* let isa_bus_new() create its own bridge on SysBus otherwise
      * devices specified on the command line won't find the bus and
@@ -850,11 +849,5 @@ ISABus *pnv_lpc_isa_create(PnvLpcController *lpc, bool use_cpld, Error **errp)
 
     isa_bus_irqs(isa_bus, irqs);
 
-    /*
-     * TODO: Map PNOR on the LPC FW address space on demand ?
-     */
-    memory_region_add_subregion(&lpc->isa_fw, PNOR_SPI_OFFSET,
-                                &pnv->pnor->mmio);
-
     return isa_bus;
 }
diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index ee7eda3e01..d69cee17b2 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -58,6 +58,7 @@ struct PnvChip {
     MemoryRegion xscom;
     AddressSpace xscom_as;
 
+    MemoryRegion *fw_mr;
     gchar        *dt_isa_nodename;
 };