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Maximilian Thuermer found a bug where the HT link capability code was always 

updating the passed value to the next link offset even when it was on the
requested link (cap_count).

Maximilian also found a bug where the linktype was still getting attributes
even when it wasn't initialized.

This should fix the HT problems for Fam10 C2. There are still issues with the
microcode which need to be resolved.

Signed-off-by: Marc Jones <marcj303@gmail.com>
Acked-by: Ward Vandewege <ward@gnu.org>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4358 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Marc Jones 2009-06-16 23:02:39 +00:00 committed by Marc Jones
parent d41de2ea7a
commit cbefc238c5
1 changed files with 20 additions and 17 deletions
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37
src/cpu/amd/model_10xxx/init_cpus.c
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@ -719,11 +719,13 @@ BOOL AMD_CpuFindCapability (u8 node, u8 cap_count, u8 *offset)
do {
val = pci_read_config32(NODE_PCI(node, 0), val);
/* Is the capability block a HyperTransport capability block? */
if ((val & 0xFF) == 0x08)
if ((val & 0xFF) == 0x08) {
/* Is the HT capability block an HT Host Capability? */
if ((val & 0xE0000000) == (1 << 29))
cap_count--;
val = (val >> 8) & 0xFF;
}
if (cap_count)
val = (val >> 8) & 0xFF;
} while (cap_count && val);
*offset = (u8) val;
@ -745,9 +747,9 @@ BOOL AMD_CpuFindCapability (u8 node, u8 cap_count, u8 *offset)
u32 AMD_checkLinkType (u8 node, u8 link, u8 regoff)
{
u32 val;
u32 linktype;
u32 linktype = 0;
/* Check coherency */
/* Check connect, init and coherency */
val = pci_read_config32(NODE_PCI(node, 0), regoff + 0x18);
val &= 0x1F;
@ -757,23 +759,24 @@ u32 AMD_checkLinkType (u8 node, u8 link, u8 regoff)
if (val == 7)
linktype |= HTPHY_LINKTYPE_NONCOHERENT;
/* Check gen3 */
val = pci_read_config32(NODE_PCI(node, 0), regoff + 0x08);
if (linktype) {
/* Check gen3 */
val = pci_read_config32(NODE_PCI(node, 0), regoff + 0x08);
if (((val >> 8) & 0x0F) > 6)
linktype |= HTPHY_LINKTYPE_HT3;
else
linktype |= HTPHY_LINKTYPE_HT1;
if (((val >> 8) & 0x0F) > 6)
linktype |= HTPHY_LINKTYPE_HT3;
else
linktype |= HTPHY_LINKTYPE_HT1;
/* Check ganged */
val = pci_read_config32(NODE_PCI(node, 0), (link << 2) + 0x170);
if ( val & 1)
linktype |= HTPHY_LINKTYPE_GANGED;
else
linktype |= HTPHY_LINKTYPE_UNGANGED;
/* Check ganged */
val = pci_read_config32(NODE_PCI(node, 0), (link << 2) + 0x170);
if ( val & 1)
linktype |= HTPHY_LINKTYPE_GANGED;
else
linktype |= HTPHY_LINKTYPE_UNGANGED;
}
return linktype;
}