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authorSubrata Banik <subratabanik@google.com>2023-04-18 23:49:37 +0530
committerSubrata Banik <subratabanik@google.com>2023-04-22 05:37:57 +0000
commit9bb269060954e740fd117036281072288814e302 (patch)
tree0ae878466cabacd86598db53daa464afeac093c6 /src
parent3879334ca0d73c84a03416a73fcf52c95f39ba6b (diff)
soc/intel/alderlake: Implement `soc_is_ish_partition_enabled` override
This patch implements `soc_is_ish_partition_enabled()` override to uniquely identify the SKU type between UFS and non-UFS to conclude if ISH partition is enabled and need to retrieve the ISH version from CSE FPT by sending HECI command. TEST=Able to uniquely identify the UFS and non-UFS SKUs while booting to google/marasov. Signed-off-by: Subrata Banik <subratabanik@google.com> Change-Id: I7771aebb988f11d9d1b2824aa28e6f294fd67c25 Reviewed-on: https://review.coreboot.org/c/coreboot/+/74532 Reviewed-by: Tarun Tuli <taruntuli@google.com> Reviewed-by: Kapil Porwal <kapilporwal@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
-rw-r--r--src/soc/intel/alderlake/chip.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/chip.c b/src/soc/intel/alderlake/chip.c
index 7cdeb7cc9a..f052279880 100644
--- a/src/soc/intel/alderlake/chip.c
+++ b/src/soc/intel/alderlake/chip.c
@@ -162,6 +162,26 @@ const char *soc_acpi_name(const struct device *dev)
}
#endif
+#if CONFIG(SOC_INTEL_STORE_CSE_FPT_PARTITION_VERSION)
+/*
+ * SoC override API to identify if ISH Firmware existed inside CSE FPT.
+ *
+ * SoC with UFS enabled would like to keep ISH enabled as well, hence
+ * identifying the UFS enabled device is enough to conclude that the ISH
+ * partition also is available.
+ */
+bool soc_is_ish_partition_enabled(void)
+{
+ struct device *ufs = pcidev_path_on_root(PCH_DEVFN_UFS);
+ uint16_t ufs_pci_id = ufs ? pci_read_config16(ufs, PCI_DEVICE_ID) : 0xFFFF;
+
+ if (ufs_pci_id == 0xFFFF)
+ return false;
+
+ return true;
+}
+#endif
+
/* SoC routine to fill GPIO PM mask and value for GPIO_MISCCFG register */
static void soc_fill_gpio_pm_configuration(void)
{