powerpc/85xx: p2020: Unify .setup_arch and .init_IRQ callbacks

Make just one .setup_arch and one .init_IRQ callback implementation for all
P2020 board code. This deduplicate repeated and same code.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230408140122.25293-11-pali@kernel.org

arch/powerpc/platforms/85xx/mpc85xx.h

@@ -21,9 +21,4 @@ void __init mpc85xx_8259_init(void);
 static inline void __init mpc85xx_8259_init(void) {}
 #endif
 
-void __init mpc85xx_ds_pic_init(void);
-void __init mpc85xx_ds_setup_arch(void);
-void __init mpc85xx_rdb_setup_arch(void);
-void __init mpc85xx_rdb_pic_init(void);
-
 #endif

arch/powerpc/platforms/85xx/mpc85xx_ds.c

@@ -34,7 +34,7 @@
 
 #include "mpc85xx.h"
 
-void __init mpc85xx_ds_pic_init(void)
+static void __init mpc85xx_ds_pic_init(void)
 {
 	struct mpic *mpic;
 	int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU;
@@ -55,7 +55,7 @@ void __init mpc85xx_ds_pic_init(void)
 /*
  * Setup the architecture
  */
-void __init mpc85xx_ds_setup_arch(void)
+static void __init mpc85xx_ds_setup_arch(void)
 {
 	if (ppc_md.progress)
 		ppc_md.progress("mpc85xx_ds_setup_arch()", 0);

arch/powerpc/platforms/85xx/mpc85xx_rdb.c

@@ -29,7 +29,7 @@
 
 #include "mpc85xx.h"
 
-void __init mpc85xx_rdb_pic_init(void)
+static void __init mpc85xx_rdb_pic_init(void)
 {
 	struct mpic *mpic;
 	int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU;
@@ -48,7 +48,7 @@ void __init mpc85xx_rdb_pic_init(void)
 /*
  * Setup the architecture
  */
-void __init mpc85xx_rdb_setup_arch(void)
+static void __init mpc85xx_rdb_setup_arch(void)
 {
 	if (ppc_md.progress)
 		ppc_md.progress("mpc85xx_rdb_setup_arch()", 0);

arch/powerpc/platforms/85xx/p2020.c

@@ -21,6 +21,32 @@
 #include "smp.h"
 #include "mpc85xx.h"
 
+static void __init p2020_pic_init(void)
+{
+	struct mpic *mpic;
+	int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU;
+
+	mpic = mpic_alloc(NULL, 0, flags, 0, 256, " OpenPIC  ");
+
+	if (WARN_ON(!mpic))
+		return;
+
+	mpic_init(mpic);
+	mpc85xx_8259_init();
+}
+
+/*
+ * Setup the architecture
+ */
+static void __init p2020_setup_arch(void)
+{
+	swiotlb_detect_4g();
+	fsl_pci_assign_primary();
+	uli_init();
+	mpc85xx_smp_init();
+	mpc85xx_qe_par_io_init();
+}
+
 #ifdef CONFIG_MPC85xx_DS
 machine_arch_initcall(p2020_ds, mpc85xx_common_publish_devices);
 #endif /* CONFIG_MPC85xx_DS */
@@ -34,8 +60,8 @@ machine_arch_initcall(p2020_rdb_pc, mpc85xx_common_publish_devices);
 define_machine(p2020_ds) {
 	.name			= "P2020 DS",
 	.compatible		= "fsl,P2020DS",
-	.setup_arch		= mpc85xx_ds_setup_arch,
-	.init_IRQ		= mpc85xx_ds_pic_init,
+	.setup_arch		= p2020_setup_arch,
+	.init_IRQ		= p2020_pic_init,
 #ifdef CONFIG_PCI
 	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
 	.pcibios_fixup_phb	= fsl_pcibios_fixup_phb,
@@ -49,8 +75,8 @@ define_machine(p2020_ds) {
 define_machine(p2020_rdb) {
 	.name			= "P2020 RDB",
 	.compatible		= "fsl,P2020RDB",
-	.setup_arch		= mpc85xx_rdb_setup_arch,
-	.init_IRQ		= mpc85xx_rdb_pic_init,
+	.setup_arch		= p2020_setup_arch,
+	.init_IRQ		= p2020_pic_init,
 #ifdef CONFIG_PCI
 	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
 	.pcibios_fixup_phb	= fsl_pcibios_fixup_phb,
@@ -62,8 +88,8 @@ define_machine(p2020_rdb) {
 define_machine(p2020_rdb_pc) {
 	.name			= "P2020RDB-PC",
 	.compatible		= "fsl,P2020RDB-PC",
-	.setup_arch		= mpc85xx_rdb_setup_arch,
-	.init_IRQ		= mpc85xx_rdb_pic_init,
+	.setup_arch		= p2020_setup_arch,
+	.init_IRQ		= p2020_pic_init,
 #ifdef CONFIG_PCI
 	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
 	.pcibios_fixup_phb	= fsl_pcibios_fixup_phb,