From 45caf972ede1e3efcc56d2558cb27171cb8748b6 Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Wed, 5 Aug 2020 13:30:30 +0530 Subject: 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44205 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh Reviewed-by: Tim Wawrzynczak --- src/soc/intel/cannonlake/bootblock/pch.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) (limited to 'src/soc/intel/cannonlake/bootblock') diff --git a/src/soc/intel/cannonlake/bootblock/pch.c b/src/soc/intel/cannonlake/bootblock/pch.c index ae52f45454..e1f054857a 100644 --- a/src/soc/intel/cannonlake/bootblock/pch.c +++ b/src/soc/intel/cannonlake/bootblock/pch.c @@ -59,26 +59,20 @@ static uint32_t get_pmc_reg_base(void) 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) -- cgit v1.2.3