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| author | Wolfgang Denk <wd@denx.de> | 2009-07-13 23:34:33 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-07-13 23:34:33 +0200 |
| commit | 17f098bd4adb4bfa184db794f36b0b9c5a8577dc (patch) | |
| tree | c49221ca855bbe3d1bf4f7af094cb12a4dff414e /cpu/ppc4xx/4xx_pci.c | |
| parent | 70ad83376d86ede02fee840817986486ba6dfc68 (diff) | |
| parent | 5db1dcce91e98915ef8a3377774f860ba601301c (diff) | |
| download | u-boot-imx-17f098bd4adb4bfa184db794f36b0b9c5a8577dc.zip u-boot-imx-17f098bd4adb4bfa184db794f36b0b9c5a8577dc.tar.gz u-boot-imx-17f098bd4adb4bfa184db794f36b0b9c5a8577dc.tar.bz2 | |
Merge branch 'master' of /home/wd/git/u-boot/custodians
Diffstat (limited to 'cpu/ppc4xx/4xx_pci.c')
| -rw-r--r-- | cpu/ppc4xx/4xx_pci.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/cpu/ppc4xx/4xx_pci.c b/cpu/ppc4xx/4xx_pci.c index 31ca85d..4b5d636 100644 --- a/cpu/ppc4xx/4xx_pci.c +++ b/cpu/ppc4xx/4xx_pci.c @@ -87,6 +87,20 @@ DECLARE_GLOBAL_DATA_PTR; */ int __pci_pre_init(struct pci_controller *hose) { +#if defined (CONFIG_405EP) + /* + * Enable the internal PCI arbiter by default. + * + * On 405EP CPUs the internal arbiter can be controlled + * by the I2C strapping EEPROM. If you want to do so + * or if you want to disable the arbiter pci_pre_init() + * must be reimplemented without enabling the arbiter. + * The arbiter is enabled in this place because of + * compatibility reasons. + */ + mtdcr(cpc0_pci, mfdcr(cpc0_pci) | CPC0_PCI_ARBIT_EN); +#endif /* CONFIG_405EP */ + return 1; } int pci_pre_init(struct pci_controller *hose) __attribute__((weak, alias("__pci_pre_init"))); @@ -323,8 +337,15 @@ void pci_405gp_init(struct pci_controller *hose) } #endif -#if defined(CONFIG_405EP) /* on ppc405ep vendor id is not set */ - pci_write_config_word(PCIDEVID_405GP, PCI_VENDOR_ID, 0x1014); /* IBM */ +#if defined(CONFIG_405EP) + /* + * on ppc405ep vendor/device id is not set + * The user manual says 0x1014 (IBM) / 0x0156 (405GP!) + * are the correct values. + */ + pci_write_config_word(PCIDEVID_405GP, PCI_VENDOR_ID, PCI_VENDOR_ID_IBM); + pci_write_config_word(PCIDEVID_405GP, + PCI_DEVICE_ID, PCI_DEVICE_ID_IBM_405GP); #endif /* |