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soc/intel/meteorlake: Implement `soc_is_ish_partition_enabled` override 

This patch implements `soc_is_ish_partition_enabled()` override to
uniquely identify the SKU type between ISH and non-ISH to conclude
if ISH partition is enabled and need to retrieve the ISH version from
CSE FPT by sending a HECI command.

BUG=b:285405031   
TEST=Able to uniquely identify the ISH SKUs while booting
    to google/rex_ec_ish to dump the ISH version.

Change-Id: I48358ad9e2e582e8b2274cbf4655de01f8792e6c
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77177
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Subrata Banik 2023-08-13 19:44:53 +00:00
parent 88512b00ad
commit 5930263c10
1 changed files with 14 additions and 0 deletions
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14
src/soc/intel/meteorlake/chip.c
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@ -122,6 +122,20 @@ const char *soc_acpi_name(const struct device *dev)
} }
#endif #endif
#if CONFIG(SOC_INTEL_STORE_ISH_FW_VERSION)
/* SoC override API to identify if ISH Firmware existed inside CSE FPT */
bool soc_is_ish_partition_enabled(void)
{
struct device *ish = pcidev_path_on_root(PCI_DEVFN_ISH);
uint16_t ish_pci_id = ish ? pci_read_config16(ish, PCI_DEVICE_ID) : 0xFFFF;
if (ish_pci_id == 0xFFFF)
return false;
return true;
}
#endif
/* SoC routine to fill GPIO PM mask and value for GPIO_MISCCFG register */ /* SoC routine to fill GPIO PM mask and value for GPIO_MISCCFG register */
static void soc_fill_gpio_pm_configuration(void) static void soc_fill_gpio_pm_configuration(void)
{ {