diff options
Diffstat (limited to 'src/northbridge/amd/amdfam10/northbridge.c')
| -rw-r--r-- | src/northbridge/amd/amdfam10/northbridge.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index fd134a2a80..caf5410618 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -218,29 +218,25 @@ static u32 amdfam10_scan_chain(device_t dev, u32 nodeid, struct bus *link, bool * We have no idea how many busses are behind this bridge yet, * so we set the subordinate bus number to 0xff for the moment. */ -#if CONFIG_SB_HT_CHAIN_ON_BUS0 > 0 - // first chain will on bus 0 - if (is_sblink) { // actually max is 0 here - min_bus = max; - } - #if CONFIG_SB_HT_CHAIN_ON_BUS0 > 1 - // second chain will be on 0x40, third 0x80, forth 0xc0 - // i would refined that to 2, 3, 4 ==> 0, 0x, 40, 0x80, 0xc0 - // >4 will use more segments, We can have 16 segmment and every segment have 256 bus, For that case need the kernel support mmio pci config. - else { + + if (CONFIG_SB_HT_CHAIN_ON_BUS0 == 0) { + min_bus = ++max; + } else if (is_sblink) { + // first chain will on bus 0 + min_bus = max; /* actually max is 0 here */ + } else if (CONFIG_SB_HT_CHAIN_ON_BUS0 == 1) { + min_bus = ++max; + } else if (CONFIG_SB_HT_CHAIN_ON_BUS0 > 1) { + // second chain will be on 0x40, third 0x80, forth 0xc0 + // i would refined that to 2, 3, 4 ==> 0, 0x, 40, 0x80, 0xc0 + // >4 will use more segments, + // We can have 16 segmment and every segment have 256 bus, + // For that case need the kernel support mmio pci config. + /* One node can have 8 link and segn is the same. */ min_bus = (((max & 0xff) >> 3) + 1) << 3; + max = min_bus; } - max = min_bus; - #else - //other ... - else { - min_bus = ++max; - } - #endif -#else - min_bus = ++max; -#endif link->secondary = min_bus; link->subordinate = link->secondary; |