New patch to review for coreboot: 309034f support for different location of HT registers in old version of K8T800
Florian Zumbiehl just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/373
-gerrit
commit 309034f5a0fa9f90cc725be2b5e8f5da9692dcb8 Author: Florian Zumbiehl florz@florz.de Date: Tue Nov 1 20:17:14 2011 +0100
support for different location of HT registers in old version of K8T800
Change-Id: I2ad82b8059efb09f0593933cb6f53b51b653d494 Signed-off-by: Florian Zumbiehl florz@florz.de --- src/southbridge/via/k8t890/early_car.c | 30 ++++++++++++++++++++++-------- 1 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/src/southbridge/via/k8t890/early_car.c b/src/southbridge/via/k8t890/early_car.c index c554c49..da7b4db 100644 --- a/src/southbridge/via/k8t890/early_car.c +++ b/src/southbridge/via/k8t890/early_car.c @@ -35,6 +35,12 @@ /* AMD K8 LDT0, LDT1, LDT2 Link Control Registers */ static u8 ldtreg[3] = {0x86, 0xa6, 0xc6};
+#if CONFIG_SOUTHBRIDGE_VIA_K8T800_OLD +#define K8X8XX_HT_CFG_BASE 0xc0 +#else +#define K8X8XX_HT_CFG_BASE 0x60 +#endif + /* This functions sets KT890 link frequency and width to same values as * it has been setup on K8 side, by AMD NB init. * This will not work for K8T800_OLD, which has a slightly different @@ -43,10 +49,13 @@ static u8 ldtreg[3] = {0x86, 0xa6, 0xc6};
u8 k8t890_early_setup_ht(void) { - u8 awidth, afreq, cldtfreq, reg; + u8 awidth, afreq, cldtfreq; u8 cldtwidth_in, cldtwidth_out, vldtwidth_in, vldtwidth_out, ldtnr, width; u16 vldtcaps;
+#if !CONFIG_SOUTHBRIDGE_VIA_K8T800_OLD + u8 reg; + /* hack, enable NVRAM in chipset */ pci_write_config8(PCI_DEV(0, 0x0, 0), K8T890_MULTIPLE_FN_EN, 0x01);
@@ -58,6 +67,7 @@ u8 k8t890_early_setup_ht(void) reg = pci_read_config8(PCI_DEV(0, 0x0, 2), 0xa1); reg |= 0x1; pci_write_config8(PCI_DEV(0, 0x0, 2), 0xa1, reg); +#endif
/* check if connected non coherent, initcomplete (find the SB on K8 side) */ ldtnr = 0; @@ -73,6 +83,10 @@ u8 k8t890_early_setup_ht(void) print_debug("K8M800 found at LDT "); #elif CONFIG_SOUTHBRIDGE_VIA_K8T800 print_debug("K8T800 found at LDT "); +#elif CONFIG_SOUTHBRIDGE_VIA_K8T800_OLD + print_debug("K8T800_OLD found at LDT "); + pci_write_config8(PCI_DEV(0, 0x0, 0), 0x64, 0x00); + pci_write_config8(PCI_DEV(0, 0x0, 0), 0xdd, 0x50); #elif CONFIG_SOUTHBRIDGE_VIA_K8T800PRO print_debug("K8T800 Pro found at LDT "); #elif CONFIG_SOUTHBRIDGE_VIA_K8M890 @@ -87,19 +101,19 @@ u8 k8t890_early_setup_ht(void) /* get the maximum widths for both sides */ cldtwidth_in = pci_read_config8(PCI_DEV(0, 0x18, 0), ldtreg[ldtnr]) & 0x7; cldtwidth_out = (pci_read_config8(PCI_DEV(0, 0x18, 0), ldtreg[ldtnr]) >> 4) & 0x7; - vldtwidth_in = pci_read_config8(PCI_DEV(0, 0x0, 0), 0x66) & 0x7; - vldtwidth_out = (pci_read_config8(PCI_DEV(0, 0x0, 0), 0x66) >> 4) & 0x7; + vldtwidth_in = pci_read_config8(PCI_DEV(0, 0x0, 0), K8X8XX_HT_CFG_BASE + 0x6) & 0x7; + vldtwidth_out = (pci_read_config8(PCI_DEV(0, 0x0, 0), K8X8XX_HT_CFG_BASE + 0x6) >> 4) & 0x7;
width = MIN(MIN(MIN(cldtwidth_out, cldtwidth_in), vldtwidth_out), vldtwidth_in); print_debug(" Agreed on width: "); print_debug_hex8(width);
- awidth = pci_read_config8(PCI_DEV(0, 0x0, 0), 0x67); + awidth = pci_read_config8(PCI_DEV(0, 0x0, 0), K8X8XX_HT_CFG_BASE + 0x7);
/* Update the desired HT LNK to match AMD NB max from VIA NB is 0x1 */ width = (width == 0x01) ? 0x11 : 0x00;
- pci_write_config8(PCI_DEV(0, 0x0, 0), 0x67, width); + pci_write_config8(PCI_DEV(0, 0x0, 0), K8X8XX_HT_CFG_BASE + 0x7, width);
/* Get programmed HT freq at base 0x89 */ cldtfreq = pci_read_config8(PCI_DEV(0, 0x18, 0), ldtreg[ldtnr] + 3) & 0xf; @@ -107,15 +121,15 @@ u8 k8t890_early_setup_ht(void) print_debug_hex8(cldtfreq);
print_debug(" VIA HT caps: "); - vldtcaps = pci_read_config16(PCI_DEV(0, 0, 0), 0x6e); + vldtcaps = pci_read_config16(PCI_DEV(0, 0, 0), K8X8XX_HT_CFG_BASE + 0xe); print_debug_hex16(vldtcaps);
if (!(vldtcaps & (1 << cldtfreq ))) { die("Chipset does not support desired HT frequency\n"); }
- afreq = pci_read_config8(PCI_DEV(0, 0x0, 0), 0x6d); - pci_write_config8(PCI_DEV(0, 0x0, 0), 0x6d, cldtfreq); + afreq = pci_read_config8(PCI_DEV(0, 0x0, 0), K8X8XX_HT_CFG_BASE + 0xd); + pci_write_config8(PCI_DEV(0, 0x0, 0), K8X8XX_HT_CFG_BASE + 0xd, cldtfreq); print_debug("\n");
/* no reset needed */
-
Florian Zumbiehl