soc/intel/jasperlake: Add JSL PMC as 'hidden' PCI device
This change allows treating the PMC as a 'hidden' PCI device on Jasper
Lake, so that the MMIO & I/O resources can be exposed as belonging to
this device, instead of the system agent and LPC/eSPI.
Change-Id: Ie07987c68388d03359c43f64a849dc6e3f94676e
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42018
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/soc/intel/jasperlake/pmc.c b/src/soc/intel/jasperlake/pmc.c
index 5bd4438..4443055 100644
--- a/src/soc/intel/jasperlake/pmc.c
+++ b/src/soc/intel/jasperlake/pmc.c
@@ -69,7 +69,7 @@
write32(pmcbase + DSX_CFG, reg);
}
-static void pmc_init(void *unused)
+static void pmc_init(struct device *dev)
{
const config_t *config = config_of_soc();
@@ -85,11 +85,21 @@
config_deep_sx(config->deep_sx_config);
}
-/*
-* Initialize PMC controller.
-*
-* PMC controller gets hidden from PCI bus during FSP-Silicon init call.
-* Hence PCI enumeration can't be used to initialize bus device and
-* allocate resources.
-*/
-BOOT_STATE_INIT_ENTRY(BS_DEV_INIT_CHIPS, BS_ON_EXIT, pmc_init, NULL);
+static void soc_pmc_read_resources(struct device *dev)
+{
+ struct resource *res;
+
+ mmio_resource(dev, 0, PCH_PWRM_BASE_ADDRESS / KiB, PCH_PWRM_BASE_SIZE / KiB);
+
+ res = new_resource(dev, 1);
+ res->base = (resource_t)ACPI_BASE_ADDRESS;
+ res->size = (resource_t)ACPI_BASE_SIZE;
+ res->limit = res->base + res->size + 1;
+ res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+}
+
+struct device_operations pmc_ops = {
+ .read_resources = soc_pmc_read_resources,
+ .set_resources = noop_set_resources,
+ .enable = pmc_init,
+};