[ARM] Orion: Fix boot crash on Kurobox Pro
The Kurobox Pro crashes when any of the PCI controller registers
are accessed. This patch adds a function to the Orion PCI handling
code that board support code can call to disable enumerating the
PCI bus entirely, and makes the Kurobox Pro PCI-related init code
call this function.
Signed-off-by: Per Andersson <avtobiff@gmail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c
index fbceecc..a7b7d77 100644
--- a/arch/arm/mach-orion5x/pci.c
+++ b/arch/arm/mach-orion5x/pci.c
@@ -541,6 +541,13 @@
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_ANY_ID, rc_pci_fixup);
+static int orion5x_pci_disabled __initdata;
+
+void __init orion5x_pci_disable(void)
+{
+ orion5x_pci_disabled = 1;
+}
+
void __init orion5x_pci_set_cardbus_mode(void)
{
orion5x_pci_cardbus_mode = 1;
@@ -553,7 +560,7 @@
if (nr == 0) {
orion_pcie_set_local_bus_nr(PCIE_BASE, sys->busnr);
ret = pcie_setup(sys);
- } else if (nr == 1) {
+ } else if (nr == 1 && !orion5x_pci_disabled) {
orion5x_pci_set_bus_nr(sys->busnr);
ret = pci_setup(sys);
}
@@ -567,7 +574,7 @@
if (nr == 0) {
bus = pci_scan_bus(sys->busnr, &pcie_ops, sys);
- } else if (nr == 1) {
+ } else if (nr == 1 && !orion5x_pci_disabled) {
bus = pci_scan_bus(sys->busnr, &pci_ops, sys);
} else {
bus = NULL;
@@ -584,7 +591,7 @@
/*
* PCIe endpoint?
*/
- if (bus < orion5x_pci_local_bus_nr())
+ if (orion5x_pci_disabled || bus < orion5x_pci_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
return -1;
