ppc4xx: Consolidate pci_pre_init() function

This patch removes the duplicted implementations of the pci_pre_init()
function by introducing a weak default function for it. This weak default
has a different implementation for some PPC variants. It can be
overridden by a board specific version.

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 4 insertions, 45 deletions

diff --git a/board/gdsys/gdppc440etx/gdppc440etx.c b/board/gdsys/gdppc440etx/gdppc440etx.c
index b93a420154..10e146b429 100644
--- a/board/gdsys/gdppc440etx/gdppc440etx.c
+++ b/board/gdsys/gdppc440etx/gdppc440etx.c
@@ -29,6 +29,7 @@
 #include <ppc4xx.h>
 #include <asm/processor.h>
 #include <asm/io.h>
+#include <asm/4xx_pci.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -158,55 +159,13 @@ int checkboard(void)
 }
 
 /*
- * pci_pre_init
- *
- * This routine is called just prior to registering the hose and gives
- * the board the opportunity to check things. Returning a value of zero
- * indicates that things are bad & PCI initialization should be aborted.
- *
- *	Different boards may wish to customize the pci controller structure
- *	(add regions, override default access routines, etc) or perform
- *	certain pre-initialization actions.
- *
+ * Override weak pci_pre_init()
  */
 #if defined(CONFIG_PCI)
 int pci_pre_init(struct pci_controller *hose)
 {
-	unsigned long addr;
-
-	/*
-	 * Set priority for all PLB3 devices to 0.
-	 * Set PLB3 arbiter to fair mode.
-	 */
-	mfsdr(SD0_AMP1, addr);
-	mtsdr(SD0_AMP1, (addr & 0x000000FF) | 0x0000FF00);
-	addr = mfdcr(PLB3_ACR);
-	mtdcr(PLB3_ACR, addr | 0x80000000);
-
-	/*
-	 * Set priority for all PLB4 devices to 0.
-	 */
-	mfsdr(SD0_AMP0, addr);
-	mtsdr(SD0_AMP0, (addr & 0x000000FF) | 0x0000FF00);
-	addr = mfdcr(PLB4_ACR) | 0xa0000000;	/* Was 0x8---- */
-	mtdcr(PLB4_ACR, addr);
-
-	/*
-	 * Set Nebula PLB4 arbiter to fair mode.
-	 */
-	/* Segment0 */
-	addr = (mfdcr(PLB0_ACR) & ~PLB0_ACR_PPM_MASK) | PLB0_ACR_PPM_FAIR;
-	addr = (addr & ~PLB0_ACR_HBU_MASK) | PLB0_ACR_HBU_ENABLED;
-	addr = (addr & ~PLB0_ACR_RDP_MASK) | PLB0_ACR_RDP_4DEEP;
-	addr = (addr & ~PLB0_ACR_WRP_MASK) | PLB0_ACR_WRP_2DEEP;
-	mtdcr(PLB0_ACR, addr);
-
-	/* Segment1 */
-	addr = (mfdcr(PLB1_ACR) & ~PLB1_ACR_PPM_MASK) | PLB1_ACR_PPM_FAIR;
-	addr = (addr & ~PLB1_ACR_HBU_MASK) | PLB1_ACR_HBU_ENABLED;
-	addr = (addr & ~PLB1_ACR_RDP_MASK) | PLB1_ACR_RDP_4DEEP;
-	addr = (addr & ~PLB1_ACR_WRP_MASK) | PLB1_ACR_WRP_2DEEP;
-	mtdcr(PLB1_ACR, addr);
+	/* First call common code */
+	__pci_pre_init(hose);
 
 	/* enable 66 MHz ext. Clock */
 	out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x00008000);