diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2020-08-05 13:30:30 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2020-08-07 06:05:12 +0000 |
| commit | 45caf972ede1e3efcc56d2558cb27171cb8748b6 (patch) | |
| tree | 12f3fe50dd32f25b3360ea78ad51a92bd2db5363 /src/soc/intel/tigerlake/bootblock | |
| parent | ad3dceae303cacee3e836e918a26380c9bfe94a2 (diff) | |
soc/intel/{cnl,icl,jsl,tgl}: Use Bus Master for setting up PWRMBASE
In 'bootblock/pch.c', clear PCI_COMMAND_MASTER (BIT 2) prior to
programming PWRMBASE and enable BIT 2 after programming PWRMBASE
along with PCI_COMMAND_MEMORY (BIT 1).
Also perform below operations
1. Use pci_and_config16 instead of pci read and write
2. Use setbits32 instead of mmio read and write
Change-Id: I7a148c718d7d2b618ad6e33d6cec11bd0bce0937
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44205
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/soc/intel/tigerlake/bootblock')
| -rw-r--r-- | src/soc/intel/tigerlake/bootblock/pch.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/src/soc/intel/tigerlake/bootblock/pch.c b/src/soc/intel/tigerlake/bootblock/pch.c index 9fc5ce167b..63beeaa601 100644 --- a/src/soc/intel/tigerlake/bootblock/pch.c +++ b/src/soc/intel/tigerlake/bootblock/pch.c @@ -49,26 +49,20 @@ static void soc_config_pwrmbase(void) { - uint32_t reg32; - uint16_t reg16; - /* * Assign Resources to PWRMBASE - * Clear BIT 1-2 Command Register + * Clear BIT 1-2 Command Register */ - reg16 = pci_read_config16(PCH_DEV_PMC, PCI_COMMAND); - reg16 &= ~(PCI_COMMAND_MEMORY); - pci_write_config16(PCH_DEV_PMC, PCI_COMMAND, reg16); + pci_and_config16(PCH_DEV_PMC, PCI_COMMAND, ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER)); /* Program PWRM Base */ pci_write_config32(PCH_DEV_PMC, PWRMBASE, PCH_PWRM_BASE_ADDRESS); /* Enable Bus Master and MMIO Space */ - pci_or_config16(PCH_DEV_PMC, PCI_COMMAND, PCI_COMMAND_MEMORY); + pci_or_config16(PCH_DEV_PMC, PCI_COMMAND, (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER)); /* Enable PWRM in PMC */ - reg32 = read32((void *)(PCH_PWRM_BASE_ADDRESS + ACTL)); - write32((void *)(PCH_PWRM_BASE_ADDRESS + ACTL), reg32 | PWRM_EN); + setbits32((void *) PCH_PWRM_BASE_ADDRESS + ACTL, PWRM_EN); } void bootblock_pch_early_init(void) |