Kyösti Mälkki (kyosti.malkki@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8352
-gerrit
commit fff0130ff76a64f69a9402972c82f4514dfe7e47 Author: Kyösti Mälkki kyosti.malkki@gmail.com Date: Sun Feb 22 09:24:59 2015 +0200
AMD K8 fam10: Fix preprocessor use with SB_HT_CHAIN_ON_BUS0
Change-Id: I6bbd1b5eaa66a640e0a2e132c8d67f38f103caf5 Signed-off-by: Kyösti Mälkki kyosti.malkki@gmail.com --- src/northbridge/amd/amdfam10/northbridge.c | 36 +++++++++++++----------------- src/northbridge/amd/amdk8/northbridge.c | 28 +++++++++-------------- 2 files changed, 26 insertions(+), 38 deletions(-)
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index 9fcd720..1a77594 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -199,29 +199,25 @@ 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 = 0xfc; diff --git a/src/northbridge/amd/amdk8/northbridge.c b/src/northbridge/amd/amdk8/northbridge.c index 34b9566..be9cb95 100644 --- a/src/northbridge/amd/amdk8/northbridge.c +++ b/src/northbridge/amd/amdk8/northbridge.c @@ -163,26 +163,18 @@ static u32 amdk8_scan_chain(device_t dev, u32 nodeid, struct bus *link, bool is_ * 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 - else { - min_bus = ((max>>6) + 1) * 0x40; - } - max = min_bus; - #else - //other ... - 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. */ + min_bus = (max & ~0x3f) + 0x40; + max = min_bus; } - #endif -#else - min_bus = ++max; -#endif
link->secondary = min_bus; link->subordinate = 0xff;