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@@ -87,6 +87,20 @@ DECLARE_GLOBAL_DATA_PTR;
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*/
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int __pci_pre_init(struct pci_controller *hose)
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{
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+#if defined (CONFIG_405EP)
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+ /*
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+ * Enable the internal PCI arbiter by default.
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+ *
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+ * On 405EP CPUs the internal arbiter can be controlled
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+ * by the I2C strapping EEPROM. If you want to do so
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+ * or if you want to disable the arbiter pci_pre_init()
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+ * must be reimplemented without enabling the arbiter.
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+ * The arbiter is enabled in this place because of
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+ * compatibility reasons.
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+ */
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+ mtdcr(cpc0_pci, mfdcr(cpc0_pci) | CPC0_PCI_ARBIT_EN);
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+#endif /* CONFIG_405EP */
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+
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return 1;
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}
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int pci_pre_init(struct pci_controller *hose) __attribute__((weak, alias("__pci_pre_init")));
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@@ -323,8 +337,15 @@ void pci_405gp_init(struct pci_controller *hose)
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}
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#endif
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-#if defined(CONFIG_405EP) /* on ppc405ep vendor id is not set */
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- pci_write_config_word(PCIDEVID_405GP, PCI_VENDOR_ID, 0x1014); /* IBM */
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+#if defined(CONFIG_405EP)
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+ /*
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+ * on ppc405ep vendor/device id is not set
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+ * The user manual says 0x1014 (IBM) / 0x0156 (405GP!)
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+ * are the correct values.
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+ */
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+ pci_write_config_word(PCIDEVID_405GP, PCI_VENDOR_ID, PCI_VENDOR_ID_IBM);
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+ pci_write_config_word(PCIDEVID_405GP,
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+ PCI_DEVICE_ID, PCI_DEVICE_ID_IBM_405GP);
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#endif
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/*
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