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authorStefan Roese <sr@denx.de>2010-05-21 15:06:19 +0200
committerStefan Roese <sr@denx.de>2010-07-01 10:26:01 +0200
commitdb643773fcea431c9dcc7f2bdb3bc337d2b268b4 (patch)
tree614d327ef9600862b6539c85f2aae13b5795aa50 /arch/powerpc/cpu/ppc4xx
parentfe7cca715c69f66efdc9c64462b0fd0a445331a5 (diff)
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ppc4xx: Enable PCIe support without PCI support on PPC440/460
By not defining CONFIG_SYS_PCI_MASTER_INIT and CONFIG_SYS_PCI_TARGET_INIT, PCI support (host and adapter) will not be enabled. But it's still possible to use the U-Boot PCI infrastructure for the PCIe ports. This configuration option is needed for a new 460GT board, which uses PCIe but has PCI disabled. Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch/powerpc/cpu/ppc4xx')
-rw-r--r--arch/powerpc/cpu/ppc4xx/4xx_pci.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/ppc4xx/4xx_pci.c b/arch/powerpc/cpu/ppc4xx/4xx_pci.c
index eed4534..bfba952 100644
--- a/arch/powerpc/cpu/ppc4xx/4xx_pci.c
+++ b/arch/powerpc/cpu/ppc4xx/4xx_pci.c
@@ -476,7 +476,9 @@ void pci_init_board(void)
*-----------------------------------------------------------------------------*/
#if defined(CONFIG_440)
+#if defined(CONFIG_SYS_PCI_MASTER_INIT) || defined(CONFIG_SYS_PCI_TARGET_INIT)
static struct pci_controller ppc440_hose = {0};
+#endif
/*
* This routine is called to determine if a pci scan should be
@@ -704,6 +706,7 @@ void pci_master_init(struct pci_controller *hose)
__attribute__((weak, alias("__pci_master_init")));
#endif /* CONFIG_SYS_PCI_MASTER_INIT */
+#if defined(CONFIG_SYS_PCI_MASTER_INIT) || defined(CONFIG_SYS_PCI_TARGET_INIT)
int pci_440_init (struct pci_controller *hose)
{
int reg_num = 0;
@@ -845,12 +848,19 @@ int pci_440_init (struct pci_controller *hose)
}
return hose->last_busno;
}
+#endif
void pci_init_board(void)
{
- int busno;
+ int busno = 0;
+ /*
+ * Only init PCI when either master or target functionality
+ * is selected.
+ */
+#if defined(CONFIG_SYS_PCI_MASTER_INIT) || defined(CONFIG_SYS_PCI_TARGET_INIT)
busno = pci_440_init (&ppc440_hose);
+#endif
#if (defined(CONFIG_440SPE) || \
defined(CONFIG_460EX) || defined(CONFIG_460GT)) && \
!defined(CONFIG_PCI_DISABLE_PCIE)