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intel/nehalem: Refactor ACPI S3 detection 

Change-Id: Ib405f3c3a6143e972963307eef7371dd43b9b5fc
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35372
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Kyösti Mälkki 2019-09-11 10:47:39 +03:00 committed by Patrick Georgi
parent 216db613a7
commit 2cce24dd4b
1 changed files with 8 additions and 16 deletions
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24
src/northbridge/intel/nehalem/early_init.c
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@ -73,22 +73,7 @@ static void nehalem_setup_bars(void)
pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(5), 0x33);
pci_write_config8(PCI_DEV(0xff, 0x00, 1), QPD0F1_PAM(6), 0x33);
#if CONFIG(ELOG_BOOT_COUNT)
/* Increment Boot Counter for non-S3 resume */
if ((inw(DEFAULT_PMBASE + PM1_STS) & WAK_STS) &&
((inl(DEFAULT_PMBASE + PM1_CNT) >> 10) & 7) != SLP_TYP_S3)
boot_count_increment();
#endif
printk(BIOS_DEBUG, " done.\n");
#if CONFIG(ELOG_BOOT_COUNT)
/* Increment Boot Counter except when resuming from S3 */
if ((inw(DEFAULT_PMBASE + PM1_STS) & WAK_STS) &&
((inl(DEFAULT_PMBASE + PM1_CNT) >> 10) & 7) == SLP_TYP_S3)
return;
boot_count_increment();
#endif
}
static void early_cpu_init (void)
@ -134,6 +119,7 @@ void nehalem_early_initialization(int chipset_type)
{
u32 capid0_a;
u8 reg8;
int s3_resume;
/* Device ID Override Enable should be done very early */
capid0_a = pci_read_config32(PCI_DEV(0, 0, 0), 0xe4);
@ -150,6 +136,12 @@ void nehalem_early_initialization(int chipset_type)
/* Setup all BARs required for early PCIe and raminit */
nehalem_setup_bars();
s3_resume = (inw(DEFAULT_PMBASE + PM1_STS) & WAK_STS) &&
(((inl(DEFAULT_PMBASE + PM1_CNT) >> 10) & 7) == SLP_TYP_S3);
if (CONFIG(ELOG_BOOT_COUNT) && !s3_resume)
boot_count_increment();
/* Device Enable */
pci_write_config32(PCI_DEV(0, 0, 0), D0F0_DEVEN,
DEVEN_IGD | DEVEN_PEG10 | DEVEN_HOST);
@ -161,7 +153,7 @@ void nehalem_early_initialization(int chipset_type)
PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
/* Magic for S3 resume. Must be done early. */
if (((inl(DEFAULT_PMBASE + PM1_CNT) >> 10) & 7) == SLP_TYP_S3) {
if (s3_resume) {
MCHBAR32 (0x1e8) = (MCHBAR32(0x1e8) & ~1) | 6;
MCHBAR32 (0x1e8) = (MCHBAR32(0x1e8) & ~3) | 4;
}