diff options
Diffstat (limited to 'src/soc/intel/baytrail/southcluster.c')
| -rw-r--r-- | src/soc/intel/baytrail/southcluster.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/southcluster.c b/src/soc/intel/baytrail/southcluster.c index bcce792659..49e4c91a13 100644 --- a/src/soc/intel/baytrail/southcluster.c +++ b/src/soc/intel/baytrail/southcluster.c @@ -20,8 +20,10 @@ #include <stdint.h> #include <arch/io.h> +#include <bootstate.h> #include <cbmem.h> #include <console/console.h> +#include <cpu/x86/smm.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> @@ -35,6 +37,7 @@ #include <baytrail/pci_devs.h> #include <baytrail/pmc.h> #include <baytrail/ramstage.h> +#include <baytrail/spi.h> #include "chip.h" static inline void @@ -482,3 +485,52 @@ static const struct pci_driver southcluster __pci_driver = { .vendor = PCI_VENDOR_ID_INTEL, .device = LPC_DEVID, }; + +int __attribute__((weak)) mainboard_get_spi_config(struct spi_config *cfg) +{ + return -1; +} + +static void finalize_chipset(void *unused) +{ + const unsigned long bcr = SPI_BASE_ADDRESS + BCR; + const unsigned long gcs = RCBA_BASE_ADDRESS + GCS; + const unsigned long gen_pmcon2 = PMC_BASE_ADDRESS + GEN_PMCON2; + const unsigned long etr = PMC_BASE_ADDRESS + ETR; + const unsigned long spi = SPI_BASE_ADDRESS; + struct spi_config cfg; + + /* Set the lock enable on the BIOS control register. */ + write32(bcr, read32(bcr) | BCR_LE); + + /* Set BIOS lock down bit controlling boot block size and swapping. */ + write32(gcs, read32(gcs) | BILD); + + /* Lock sleep stretching policy and set SMI lock. */ + write32(gen_pmcon2, read32(gen_pmcon2) | SLPSX_STR_POL_LOCK | SMI_LOCK); + + /* Set the CF9 lock. */ + write32(etr, read32(etr) | CF9LOCK); + + if (mainboard_get_spi_config(&cfg) < 0) { + printk(BIOS_DEBUG, "No SPI lockdown configuration.\n"); + } else { + write16(spi + PREOP, cfg.preop); + write16(spi + OPTYPE, cfg.optype); + write32(spi + OPMENU0, cfg.opmenu[0]); + write32(spi + OPMENU1, cfg.opmenu[1]); + write16(spi + HSFSTS, read16(spi + HSFSTS) | FLOCKDN); + write32(spi + UVSCC, cfg.uvscc); + write32(spi + LVSCC, cfg.lvscc | VCL); + } + + printk(BIOS_DEBUG, "Finalizing SMM.\n"); + outb(APM_CNT_FINALIZE, APM_CNT); +} + +BOOT_STATE_INIT_ENTRIES(finalize_bscb) = { + BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, + finalize_chipset, NULL), + BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, + finalize_chipset, NULL), +}; |