During PowerNV boot skiboot populates the device tree by retrieving
base address of homer/occ common area from PBA BARs and prd ipoll
mask by accessing xscom read/write accesses.
Signed-off-by: Balamuruhan S <bal...@linux.ibm.com>
---
hw/ppc/pnv_xscom.c | 27 +++++++++++++++++++++++----
1 file changed, 23 insertions(+), 4 deletions(-)
diff --git a/hw/ppc/pnv_xscom.c b/hw/ppc/pnv_xscom.c
index 5d5b5e9884..18a780bcdf 100644
--- a/hw/ppc/pnv_xscom.c
+++ b/hw/ppc/pnv_xscom.c
@@ -77,6 +77,29 @@ static uint64_t xscom_read_default(PnvChip *chip, uint32_t
pcba)
case 0x18002: /* ECID2 */
return 0;
+ /* PBA BAR0 */
+ case 0x5012b00: /* P9 homer base address */
+ return PNV9_HOMER_BASE(chip);
+ case 0x2013f00: /* P8 homer base address */
+ return PNV_HOMER_BASE(chip);
+
+ /* PBA BARMASK0 */
+ case 0x5012b04: /* P9 homer region size */
+ case 0x2013f04: /* P8 homer region size */
+ return PNV_HOMER_SIZE;
+
+ /* PBA BAR2 */
+ case 0x5012b02: /* P9 occ common area */
+ return PNV9_OCC_COMMON_AREA(chip);
+ case 0x2013f02: /* P8 occ common area */
+ return PNV_OCC_COMMON_AREA(chip);
+
+ /* PBA BARMASK2 */
+ case 0x5012b06: /* P9 occ common area size */
+ case 0x2013f06: /* P8 occ common area size */
+ return PNV_OCC_COMMON_AREA_SIZE;
+
+
case 0x1010c00: /* PIBAM FIR */
case 0x1010c03: /* PIBAM FIR MASK */
@@ -96,13 +119,9 @@ static uint64_t xscom_read_default(PnvChip *chip, uint32_t
pcba)
case 0x2020009: /* ADU stuff, error register */
case 0x202000f: /* ADU stuff, receive status register*/
return 0;
- case 0x2013f00: /* PBA stuff */
case 0x2013f01: /* PBA stuff */
- case 0x2013f02: /* PBA stuff */
case 0x2013f03: /* PBA stuff */
- case 0x2013f04: /* PBA stuff */
case 0x2013f05: /* PBA stuff */
- case 0x2013f06: /* PBA stuff */
case 0x2013f07: /* PBA stuff */
return 0;
case 0x2013028: /* CAPP stuff */
--
2.14.5
