diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2010-03-01 10:30:08 +0000 |
|---|---|---|
| committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2010-03-01 10:30:08 +0000 |
| commit | 55cf7bcbeb605648ccfa2fdab102506f87388c07 (patch) | |
| tree | c92cc09324c72d674692022b97e622d39a10c485 /src/northbridge/amd | |
| parent | 72f75b1c8b3a5513e467cea1af745bcbd310e881 (diff) | |
Allow per-board setting of HT clock and width so
less than optimal PCB designs can still work reliably
with reduced clock.
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5179 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge/amd')
| -rw-r--r-- | src/northbridge/amd/amdht/h3finit.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/src/northbridge/amd/amdht/h3finit.c b/src/northbridge/amd/amdht/h3finit.c index 98af59f679..be55c063bb 100644 --- a/src/northbridge/amd/amdht/h3finit.c +++ b/src/northbridge/amd/amdht/h3finit.c @@ -1327,9 +1327,51 @@ void selectOptimalWidthAndFrequency(sMainData *pDat) for (i = 0; i < pDat->TotalLinks*2; i += 2) { - cbPCBFreqLimit = 0xFFFF; +#if CONFIG_LIMIT_HT_SPEED_200 + cbPCBFreqLimit = 0x0001; +#elif CONFIG_LIMIT_HT_SPEED_300 + cbPCBFreqLimit = 0x0003; +#elif CONFIG_LIMIT_HT_SPEED_400 + cbPCBFreqLimit = 0x0007; +#elif CONFIG_LIMIT_HT_SPEED_500 + cbPCBFreqLimit = 0x000F; +#elif CONFIG_LIMIT_HT_SPEED_600 + cbPCBFreqLimit = 0x001F; +#elif CONFIG_LIMIT_HT_SPEED_800 + cbPCBFreqLimit = 0x003F; +#elif CONFIG_LIMIT_HT_SPEED_1000 + cbPCBFreqLimit = 0x007F; +#elif CONFIG_LIMIT_HT_SPEED_1200 + cbPCBFreqLimit = 0x00FF; +#elif CONFIG_LIMIT_HT_SPEED_1400 + cbPCBFreqLimit = 0x01FF; +#elif CONFIG_LIMIT_HT_SPEED_1600 + cbPCBFreqLimit = 0x03FF; +#elif CONFIG_LIMIT_HT_SPEED_1800 + cbPCBFreqLimit = 0x07FF; +#elif CONFIG_LIMIT_HT_SPEED_2000 + cbPCBFreqLimit = 0x0FFF; +#elif CONFIG_LIMIT_HT_SPEED_2200 + cbPCBFreqLimit = 0x1FFF; +#elif CONFIG_LIMIT_HT_SPEED_2400 + cbPCBFreqLimit = 0x3FFF; +#elif CONFIG_LIMIT_HT_SPEED_2600 + cbPCBFreqLimit = 0x7FFF; +#else + cbPCBFreqLimit = 0xFFFF; // Maximum allowed by autoconfiguration +#endif + +#if CONFIG_LIMIT_HT_DOWN_WIDTH_8 + cbPCBABDownstreamWidth = 8; +#else cbPCBABDownstreamWidth = 16; +#endif + +#if CONFIG_LIMIT_HT_UP_WIDTH_8 + cbPCBBAUpstreamWidth = 8; +#else cbPCBBAUpstreamWidth = 16; +#endif if ( (pDat->PortList[i].Type == PORTLIST_TYPE_CPU) && (pDat->PortList[i+1].Type == PORTLIST_TYPE_CPU)) { |