ppc4xx: Add pci_pre_init() for 405 boards

This patch adds support for calling a plattform dependant
pci_pre_init() function for 405 boards. This can be used to
move the current pci_405gp_fixup_irq() function into the
board code.

This patch also makes the CFG_PCI_PRE_INIT define obsolete.
A default function with 'weak' attribute is used when
a board specific pci_pre_init() is not implemented.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>

cpu/ppc4xx/405gp_pci.c

@@ -77,11 +77,21 @@
 #include <asm/processor.h>
 #include <pci.h>
 
+#ifdef CONFIG_PCI
+
 DECLARE_GLOBAL_DATA_PTR;
 
-#if defined(CONFIG_405GP) || defined(CONFIG_405EP)
+/*
+ * Board-specific pci initialization
+ * Platform code can reimplement pci_pre_init() if needed
+ */
+int __pci_pre_init(struct pci_controller *hose)
+{
+	return 1;
+}
+int pci_pre_init(struct pci_controller *hose) __attribute__((weak, alias("__pci_pre_init")));
 
-#ifdef CONFIG_PCI
+#if defined(CONFIG_405GP) || defined(CONFIG_405EP)
 
 #if defined(CONFIG_PMC405)
 ushort pmc405_pci_subsys_deviceid(void);
@@ -191,6 +201,13 @@ void pci_405gp_init(struct pci_controller *hose)
 	if (hose->pci_fb)
 		pciauto_region_init(hose->pci_fb);
 
+	/* Let board change/modify hose & do initial checks */
+	if (pci_pre_init (hose) == 0) {
+		printf("PCI: Board-specific initialization failed.\n");
+		printf("PCI: Configuration aborted.\n");
+		return;
+	}
+
 	pci_register_hose(hose);
 
 	/*--------------------------------------------------------------------------+
@@ -416,14 +433,12 @@ void pci_init_board(void)
 
 #endif
 
-#endif /* CONFIG_PCI */
-
 #endif /* CONFIG_405GP */
 
 /*-----------------------------------------------------------------------------+
  * CONFIG_440
  *-----------------------------------------------------------------------------*/
-#if defined(CONFIG_440) && defined(CONFIG_PCI)
+#if defined(CONFIG_440)
 
 static struct pci_controller ppc440_hose = {0};
 
@@ -496,14 +511,12 @@ void pci_440_init (struct pci_controller *hose)
 
 	pci_setup_indirect(hose, PCIX0_CFGADR, PCIX0_CFGDATA);
 
-#if defined(CFG_PCI_PRE_INIT)
 	/* Let board change/modify hose & do initial checks */
 	if (pci_pre_init (hose) == 0) {
 		printf("PCI: Board-specific initialization failed.\n");
 		printf("PCI: Configuration aborted.\n");
 		return;
 	}
-#endif
 
 	pci_register_hose( hose );
 
@@ -575,4 +588,5 @@ void pci_init_board(void)
 #endif
 }
 
-#endif /* CONFIG_440 & CONFIG_PCI */
+#endif /* CONFIG_440 */
+#endif /* CONFIG_PCI */