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| author | Furquan Shaikh <furquan@google.com> | 2016-05-04 16:03:36 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2016-05-06 06:52:28 +0200 |
| commit | c681409a8a3429c8aa8572ce18f4560fecb0c0ae (patch) | |
| tree | a43f622d9693a2af4974fd8c4be65494f6644bc8 | |
| parent | d264b46c4971f952ce88f66bb147816f5e1dc67d (diff) | |
| download | coreboot-c681409a8a3429c8aa8572ce18f4560fecb0c0ae.tar.xz | |
soc/intel/apollolake: Correct PCI write size in romstage
1. PCI command reg write should be 16-bit.
2. HPTC reg write should be 8-bit. Also, use macros instead of
hard-coded values. Currently, the macros are defined in romstage.c,
but if more P2SB macros are added, it would be good to move them to a
separate header file.
Change-Id: Iad1eb6a95467a41ecf454092808d357425c4c2fc
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/14613
Tested-by: build bot (Jenkins)
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
| -rw-r--r-- | src/soc/intel/apollolake/romstage.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/soc/intel/apollolake/romstage.c b/src/soc/intel/apollolake/romstage.c index 6b49bbd961..8ec94a7cb3 100644 --- a/src/soc/intel/apollolake/romstage.c +++ b/src/soc/intel/apollolake/romstage.c @@ -44,6 +44,21 @@ static struct chipset_power_state power_state CAR_GLOBAL; +/* High Performance Event Timer Configuration */ +#define P2SB_HPTC 0x60 +#define P2SB_HPTC_ADDRESS_ENABLE (1 << 7) +/* + * ADDRESS_SELECT ENCODING_RANGE + * 0 0xFED0 0000 - 0xFED0 03FF + * 1 0xFED0 1000 - 0xFED0 13FF + * 2 0xFED0 2000 - 0xFED0 23FF + * 3 0xFED0 3000 - 0xFED0 33FF + */ +#define P2SB_HPTC_ADDRESS_SELECT_0 (0 << 0) +#define P2SB_HPTC_ADDRESS_SELECT_1 (1 << 0) +#define P2SB_HPTC_ADDRESS_SELECT_2 (2 << 0) +#define P2SB_HPTC_ADDRESS_SELECT_3 (3 << 0) + /* * Enables several BARs and devices which are needed for memory init * - MCH_BASE_ADDR is needed in order to talk to the memory controller @@ -65,12 +80,13 @@ static void soc_early_romstage_init(void) pci_write_config32(pmc, PCI_BASE_ADDRESS_2, PMC_BAR1); pci_write_config32(pmc, PCI_BASE_ADDRESS_3, 0); /* 64-bit BAR */ pci_write_config16(pmc, PCI_BASE_ADDRESS_4, ACPI_PMIO_BASE); - pci_write_config32(pmc, PCI_COMMAND, + pci_write_config16(pmc, PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); /* Enable decoding for HPET. Needed for FSP global pointer storage */ - pci_write_config32(P2SB_DEV, 0x60, 1<<7); + pci_write_config8(P2SB_DEV, P2SB_HPTC, P2SB_HPTC_ADDRESS_SELECT_0 | + P2SB_HPTC_ADDRESS_ENABLE); } static void disable_watchdog(void) |