coreboot June 2005

coreboot@coreboot.org

35 participants
100 discussions

RE: [LinuxBIOS] Merge complete....
by Stephen.Kimball＠bench.com 23 Jun '05

23 Jun '05

YH, Looking at your hard_reset() in src/mainboard/tyan/s2895/auto.c src/nvidia/ck804/ck804_reset.c The two hard_reset's are different. I think one might be wrong. The one in auto.c writes a & e to cf9, that's a hard reset. The one in ck804_reset.c writes 2 and 6 to cf9, that's a soft reset. Also I'm not sure how you enable the cf9 port. I think you should write LPC:e8 in hard_reset() to be sure it's enabled. Also I noticed in the commercial BIOS's hard_reset they include a loop forever or JMP * or L1: go to L1 after the cf9 writes. Steve -----Original Message----- From: linuxbios-bounces(a)openbios.org [mailto:linuxbios-bounces@openbios.org] On Behalf Of YhLu Sent: Wednesday, June 22, 2005 8:37 PM To: ebiederman(a)lnxi.com Cc: 'LinuxBIOS' Subject: RE: [LinuxBIOS] Merge complete.... ck804 is using cf9 to do reset, ......may be i lost the control of that port. YH > -----Original Message----- > From: ebiederman(a)lnxi.com [mailto:ebiederman@lnxi.com] > Sent: Wednesday, June 22, 2005 5:29 PM > To: YhLu > Cc: 'LinuxBIOS' > Subject: Re: [LinuxBIOS] Merge complete.... > > YhLu <YhLu(a)tyan.com> writes: > > > the code reset_bus and scan_bus seem quite neat. > > > > but do one simutation, it doesn't work. > > > > I set ht frq to 800Mhz in auto.c > > and reset that in hypertransport.c to 1GHz. > > > > it hangs after print out "Reseting board..." > > And the nice thing you get at most one reset of the board > everything will be setup and tuned first. > > > my hard_reset for ck804 doesn't work? > > hard_reset is suposed to work, because i can do restart and > > hardwaremain already call that...... > > Sounds like that is the problem. Quite possibly there is a > bus number change somewhere messing things up. > > The other possibility is that there is some tuning problem > and the board does not come back from the reset. > > Eric > _______________________________________________ LinuxBIOS mailing list LinuxBIOS(a)openbios.org http://www.openbios.org/mailman/listinfo/linuxbios

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RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

hard code in hyperstransport.c with bus->reset_needed = 1; //debug the hard_reset from reset_bus works well. maybe the ck804 don't allow us to do second optimize.....? I will forget about it. YH > -----Original Message----- > From: YhLu > Sent: Wednesday, June 22, 2005 6:34 PM > To: ebiederman(a)lnxi.com > Cc: 'LinuxBIOS' > Subject: RE: [LinuxBIOS] Merge complete.... > > 1. if not optimize the link in auto.c stage, and let > hypertranport.c do the optimization, the hard_reset from > reset_bus can works.... > 2. if optimize the link in auto.c and hard_reset will be not > called, and if call hard_reset from debug device....it works well. > 3. if optimize the link in auto.c and reset freq to high > value in hypertransport.c, the hard_reset from reset_bus will hang.... > > YH > >

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RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

1. if not optimize the link in auto.c stage, and let hypertranport.c do the optimization, the hard_reset from reset_bus can works.... 2. if optimize the link in auto.c and hard_reset will be not called, and if call hard_reset from debug device....it works well. 3. if optimize the link in auto.c and reset freq to high value in hypertransport.c, the hard_reset from reset_bus will hang.... YH > -----Original Message----- > From: YhLu > Sent: Wednesday, June 22, 2005 5:37 PM > To: ebiederman(a)lnxi.com > Cc: 'LinuxBIOS' > Subject: RE: [LinuxBIOS] Merge complete.... > > ck804 is using cf9 to do reset, ......may be i lost the > control of that port. > > YH > > > -----Original Message----- > > From: ebiederman(a)lnxi.com [mailto:ebiederman@lnxi.com] > > Sent: Wednesday, June 22, 2005 5:29 PM > > To: YhLu > > Cc: 'LinuxBIOS' > > Subject: Re: [LinuxBIOS] Merge complete.... > > > > YhLu <YhLu(a)tyan.com> writes: > > > > > the code reset_bus and scan_bus seem quite neat. > > > > > > but do one simutation, it doesn't work. > > > > > > I set ht frq to 800Mhz in auto.c > > > and reset that in hypertransport.c to 1GHz. > > > > > > it hangs after print out "Reseting board..." > > > > And the nice thing you get at most one reset of the board > everything > > will be setup and tuned first. > > > > > my hard_reset for ck804 doesn't work? > > > hard_reset is suposed to work, because i can do restart and > > > hardwaremain already call that...... > > > > Sounds like that is the problem. Quite possibly there is a > bus number > > change somewhere messing things up. > > > > The other possibility is that there is some tuning problem and the > > board does not come back from the reset. > > > > Eric > > > > _______________________________________________ > LinuxBIOS mailing list > LinuxBIOS(a)openbios.org > http://www.openbios.org/mailman/listinfo/linuxbios >

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RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

ck804 is using cf9 to do reset, ......may be i lost the control of that port. YH > -----Original Message----- > From: ebiederman(a)lnxi.com [mailto:ebiederman@lnxi.com] > Sent: Wednesday, June 22, 2005 5:29 PM > To: YhLu > Cc: 'LinuxBIOS' > Subject: Re: [LinuxBIOS] Merge complete.... > > YhLu <YhLu(a)tyan.com> writes: > > > the code reset_bus and scan_bus seem quite neat. > > > > but do one simutation, it doesn't work. > > > > I set ht frq to 800Mhz in auto.c > > and reset that in hypertransport.c to 1GHz. > > > > it hangs after print out "Reseting board..." > > And the nice thing you get at most one reset of the board > everything will be setup and tuned first. > > > my hard_reset for ck804 doesn't work? > > hard_reset is suposed to work, because i can do restart and > > hardwaremain already call that...... > > Sounds like that is the problem. Quite possibly there is a > bus number change somewhere messing things up. > > The other possibility is that there is some tuning problem > and the board does not come back from the reset. > > Eric >

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RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

the code reset_bus and scan_bus seem quite neat. but do one simutation, it doesn't work. I set ht frq to 800Mhz in auto.c and reset that in hypertransport.c to 1GHz. it hangs after print out "Reseting board..." my hard_reset for ck804 doesn't work? hard_reset is suposed to work, because i can do restart and hardwaremain already call that...... YH

2 1

RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

Eric, what's the purpose of the bus-> reset_needed? can you talk about reset_bus and scan_bus working sequence...? YH

2 1

RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

unsigned int scan_bus(device_t bus, unsigned int max) { unsigned int new_max; int do_scan_bus; if ( !bus || !bus->enabled || !bus->ops || !bus->ops->scan_bus) { return max; } do_scan_bus = 1; while(do_scan_bus) { int link; new_max = bus->ops->scan_bus(bus, max); do_scan_bus = 0; for(link = 0; link < bus->links; link++) { if (bus->link[link].reset_needed) { if (reset_bus(&bus->link[link])) { do_scan_bus = 1; } else { bus->bus->reset_needed = 1; } } } } return new_max; } suggest change bus to dev, otherwise is some confusing. YH

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RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

or void x86_setup_mtrrs(unsigned address_bits) /* this routine needs to know how many address bits a given processor * supports. CPUs get grumpy when you set too many bits in * their mtrr registers :( I would generically call cpuid here * and find out how many physically supported but some cpus are * buggy, and report more bits then they actually support. */ { /* Try this the simple way of incrementally adding together * mtrrs. If this doesn't work out we can get smart again * and clear out the mtrrs. */ struct var_mtrr_state var_state; if(address_bits != 40) { ---------------------------------------- skip it for AMD printk_debug("\n"); /* Initialized the fixed_mtrrs to uncached */ printk_debug("Setting fixed MTRRs(%d-%d) type: UC\n", 0, NUM_FIXED_RANGES); set_fixed_mtrrs(0, NUM_FIXED_RANGES, MTRR_TYPE_UNCACHEABLE); /* Now see which of the fixed mtrrs cover ram. */ search_global_resources( IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE, set_fixed_mtrr_resource, NULL); printk_debug("DONE fixed MTRRs\n"); }

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RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

Setting fixed MTRRs(0-88) type: UC Setting fixed MTRRs(0-16) Type: WB, RdMEM, WrMEM Setting fixed MTRRs(24-88) Type: WB, RdMEM, WrMEM DONE fixed MTRRs Setting fixed MTRRs(0-88) type: UC Setting fixed MTRRs(0-16) Type: WB Setting fixed MTRRs(24-88) Type: WB DONE fixed MTRRs Setting variable MTRR 0, base: 0MB, range: 8192MB, type WB Setting variable MTRR 1, base: 8192MB, range: 1024MB, type WB Setting variable MTRR 2, base: 3072MB, range: 1024MB, type UC DONE variable MTRRs Clear out the extra MTRR's MTRR check Fixed MTRRs : Enabled Variable MTRRs: Enabled Setting up local apic... apic_id: 0 done. i got two copy set fixed mtrr again. Eric, it is good you pass the address bits x86_setup_mtrrs. but for amd it is need to enable the fix mtrr mod enable bit in SYSCFG_MSR. ... amd_mtrr need some change ... YH > -----Original Message----- > From: YhLu > Sent: Wednesday, June 22, 2005 12:54 PM > To: ebiederman(a)lnxi.com > Cc: LinuxBIOS > Subject: RE: [LinuxBIOS] Merge complete.... > > I suugest put > node_link_to_bus > to inconherent_ht.c > > YH > > _______________________________________________ > LinuxBIOS mailing list > LinuxBIOS(a)openbios.org > http://www.openbios.org/mailman/listinfo/linuxbios >

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RE: [LinuxBIOS] Merge complete....
by YhLu 22 Jun '05

22 Jun '05

I suugest put node_link_to_bus to inconherent_ht.c YH

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coreboot June 2005