diff options
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/amd/amdk8/incoherent_ht.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/src/northbridge/amd/amdk8/incoherent_ht.c b/src/northbridge/amd/amdk8/incoherent_ht.c index d4271efbda..bdb2676e39 100644 --- a/src/northbridge/amd/amdk8/incoherent_ht.c +++ b/src/northbridge/amd/amdk8/incoherent_ht.c @@ -1,11 +1,17 @@ /* This should be done by Eric 2004.12 yhlu add multi ht chain dynamically support + */ #include <device/pci_def.h> #include <device/pci_ids.h> #include <device/hypertransport_def.h> + +/* We can reduce the size of code generated by romcc by + * changing all of the fixed size types that live in registers + * into simple unsigned variables. (ie s/uint8_t/unsigned/g) + */ #ifndef K8_HT_FREQ_1G_SUPPORT #define K8_HT_FREQ_1G_SUPPORT 0 #endif @@ -130,21 +136,21 @@ static uint16_t ht_read_freq_cap(device_t dev, uint8_t pos) /* AMD 8131 Errata 48 */ if (id == (PCI_VENDOR_ID_AMD | (PCI_DEVICE_ID_AMD_8131_PCIX << 16))) { freq_cap &= ~(1 << HT_FREQ_800Mhz); - return freq_cap; } /* AMD 8151 Errata 23 */ if (id == (PCI_VENDOR_ID_AMD | (PCI_DEVICE_ID_AMD_8151_SYSCTRL << 16))) { freq_cap &= ~(1 << HT_FREQ_800Mhz); - return freq_cap; } /* AMD K8 Unsupported 1Ghz? */ if (id == (PCI_VENDOR_ID_AMD | (0x1100 << 16))) { - #if K8_HT_FREQ_1G_SUPPORT == 1 - if (is_cpu_pre_e0()) // CK804 support 1G? - #endif - freq_cap &= ~(1 << HT_FREQ_1000Mhz); +#if K8_HT_FREQ_1G_SUPPORT == 1 + /* Supported starting with E0 */ + device_t dev_2 = PCI_DEV(0,0x18,2); + if(pci_read_config32(dev_2,0x9c) < 0x20f00) +#endif + freq_cap &= ~(1 << HT_FREQ_1000Mhz); } return freq_cap; @@ -199,8 +205,10 @@ static int ht_optimize_link( /* See if I am changing the link freqency */ old_freq = pci_read_config8(dev1, pos1 + LINK_FREQ(offs1)); + old_freq &= 0x0f; needs_reset |= old_freq != freq; old_freq = pci_read_config8(dev2, pos2 + LINK_FREQ(offs2)); + old_freq &= 0x0f; needs_reset |= old_freq != freq; /* Set the Calulcated link frequency */ |