mb/google/octopus: Disable unused USB devices
Disable unused USB devices in the device tree so that the concerned ACPI objects do not get exported to the OS. BUG=b:133513961 BRANCH=octopus TEST=Boot to ChromeOS. Ensure that the USB devices are disabled based on port status and the concerned ACPI objects are not exported. Change-Id: I0faccdfb8a9df9ec52130437433b15973e3d6f1a Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34291 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
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@ -16,12 +16,14 @@
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#include <arch/acpi.h>
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#include <baseboard/variants.h>
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#include <boardid.h>
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#include <bootstate.h>
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#include <console/console.h>
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#include <device/device.h>
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#include <device/pci_def.h>
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#include <device/pci_ops.h>
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#include <ec/google/chromeec/ec.h>
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#include <ec/ec.h>
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#include <intelblocks/xhci.h>
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#include <nhlt.h>
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#include <smbios.h>
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#include <soc/cpu.h>
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@ -199,3 +201,16 @@ const char *smbios_mainboard_manufacturer(void)
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return manuf;
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}
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bool __weak variant_ext_usb_status(unsigned int port_type, unsigned int port_id)
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{
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/* All externally visible USB ports are present */
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return true;
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}
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static void disable_unused_devices(void *unused)
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{
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usb_xhci_disable_unused(variant_ext_usb_status);
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}
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BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, disable_unused_devices, NULL);
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@ -47,6 +47,17 @@ void variant_nhlt_init(struct nhlt *nhlt);
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/* Modify devictree settings during ramstage. */
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struct device;
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void variant_update_devtree(struct device *dev);
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/**
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* variant_ext_usb_status() - Get status of externally visible USB ports
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* @port_type: Type of USB port i.e. USB2/USB3
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* @port_id: USB Port ID
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*
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* This function is supplied by the mainboard/variant to SoC's XHCI driver to
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* identify the status of externally visible USB ports.
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*
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* Return: true if the port is present, false if the port is absent.
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*/
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bool variant_ext_usb_status(unsigned int port_type, unsigned int port_id);
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/* Get no touchscreen SKU ID. */
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bool no_touchscreen_sku(uint32_t sku_id);
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@ -16,6 +16,8 @@
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#include <baseboard/variants.h>
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#include <sar.h>
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#define RIGHT_USB_C_PORT_ID 4
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const char *get_wifi_sar_cbfs_filename(void)
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{
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const char *filename = NULL;
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@ -26,3 +28,12 @@ const char *get_wifi_sar_cbfs_filename(void)
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return filename;
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}
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bool variant_ext_usb_status(unsigned int port_type, unsigned int port_id)
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{
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uint32_t sku_id = get_board_sku();
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if (sku_id == 2 && port_id == RIGHT_USB_C_PORT_ID)
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return false;
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return true;
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}
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