baytrail: Add XHCI initialization
This adds required steps to initialize the XHCI controller
on the baytrail platform.
Actually using XHCI is causing lots of bad behavior including
apparent memory corruption.
BUG=chrome-os-partner:23635
BRANCH=rambi
TEST=build and boot on rambi
Change-Id: Ic43e04f4b47e107ec3bb0c387a9fc72c3cae0271
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/175511
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4929
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/soc/intel/baytrail/xhci.c b/src/soc/intel/baytrail/xhci.c
new file mode 100644
index 0000000..244a4dc
--- /dev/null
+++ b/src/soc/intel/baytrail/xhci.c
@@ -0,0 +1,226 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <stdint.h>
+#include <reg_script.h>
+
+#include <baytrail/iomap.h>
+#include <baytrail/iosf.h>
+#include <baytrail/pci_devs.h>
+#include <baytrail/pmc.h>
+#include <baytrail/ramstage.h>
+#include <baytrail/xhci.h>
+
+#include "chip.h"
+
+struct reg_script usb3_phy_script[] = {
+ /* USB3PHYInit() */
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_CDN_PLL_CONTROL,
+ ~0x00700000, 0x00500000),
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_CDN_VCO_START_CAL_POINT,
+ ~0x001f0000, 0x000A0000),
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_CCDRLF,
+ ~0x0000000f, 0x0000000b),
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_PEAKING_AMP_CONFIG_DIAG,
+ ~0x000000f0, 0x000000f0),
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_OFFSET_COR_CONFIG_DIAG,
+ ~0x000001c0, 0x00000000),
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_VGA_GAIN_CONFIG_DIAG,
+ ~0x00000070, 0x00000020),
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_REE_DAC_CONTROL,
+ ~0x00000002, 0x00000002),
+ REG_IOSF_RMW(IOSF_PORT_USHPHY, USHPHY_CDN_U1_POWER_STATE_DEF,
+ ~0x00000000, 0x00040000),
+ REG_SCRIPT_END
+};
+
+const struct reg_script xhci_init_script[] = {
+ /* CommonXhciHcInit() */
+ /* BAR + 0x0c[31:16] = 0x0200 */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x000c, 0x0000ffff, 0x02000000),
+ /* BAR + 0x0c[7:0] = 0x0a */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x000c, 0xffffff00, 0x0000000a),
+ /* BAR + 0x8094[23,21,14]=111b */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x8094, 0x00a04000),
+ /* BAR + 0x8110[20,11,8,2]=1100b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x8110, ~0x00000104, 0x00100800),
+ /* BAR + 0x8144[8,7,6]=111b */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x8144, 0x000001c0),
+ /* BAR + 0x8154[21,13,3]=010b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x8154, ~0x00200008, 0x80002000),
+ /* BAR + 0x816c[19:0]=1110x100000000111100b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x816c, 0xfff08000, 0x000e0030),
+ /* BAR + 0x8188[26,24]=11b */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x8188, 0x05000000),
+ /* BAR + 0x8174=0x1000c0a*/
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x8174, 0xfe000000, 0x01000c0a),
+ /* BAR + 0x854c[29]=0b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x854c, ~0x20000000, 0),
+ /* BAR + 0x8178[12:0]=0b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x8178, ~0xffffe000, 0),
+ /* BAR + 0x8164[7:0]=0xff */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x8164, 0x000000ff),
+ /* BAR + 0x0010[10,9,5]=110b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x0010, ~0x00000020, 0x00000600),
+ /* BAR + 0x8058[20,16,8]=110b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x8058, ~0x00000010, 0x00110000),
+ /* BAR + 0x8060[25]=1b */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x8060, 0x02000000),
+ /* BAR + 0x80e0[19,9,6]=001b, toggle bit 24=1 */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x80e0, ~0x00010020, 0x01000040),
+ /* BAR + 0x80e0 toggle bit 24=0 */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x80e0, ~0x01000000, 0),
+ /* BAR + 0x80f0[20]=0b */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x80f0, ~0x00100000, 0),
+ /* BAR + 0x8008[19]=1b (to enable LPM) */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x8008, 0x00080000),
+ /* BAR + 0x80fc[25]=1b */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x80fc, 0x02000000),
+ /* 0x40/0x44 are written as bytes to avoid touching bit31 */
+ /* D20:F0:40[21,20,18,10,9,8]=111001b (don't write byte3) */
+ REG_PCI_RMW8(0x41, ~0x06, 0x01),
+ /* Except [21,20,19,18]=0001b USB wake W/A is disable IIL1E */
+ REG_PCI_RMW8(0x42, 0x3c, 0x04),
+ /* D20:F0:44[19:14,10,9,7,3:0]=1 (don't write byte3) */
+ REG_PCI_RMW8(0x44, 0x00, 0x8f),
+ REG_PCI_RMW8(0x45, ~0xcf, 0xc6),
+ REG_PCI_RMW8(0x46, ~0x0f, 0x0f),
+ /* BAR + 0x8140 = 0xff00f03c */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x8140, 0, 0xff00f03c),
+ REG_SCRIPT_END
+};
+
+const struct reg_script xhci_clock_gating_script[] = {
+ /* ConfigureXhciClockGating() */
+ /* D20:F0:40[21:19,18,10:8]=000,1,001 (don't write byte 3) */
+ REG_PCI_RMW16(0x40, ~0x0300, 0x0010),
+ REG_PCI_RMW8(0x42, ~0x38, 0x04),
+ /* D20:F0:44[5:3]=001b */
+ REG_PCI_RMW16(0x44, ~0x0030, 0x0008),
+ /* D20:F0:A0[19:18]=01b */
+ REG_PCI_RMW32(0xa0, ~0x00080000, 0x00040000),
+ /* D20:F0:A4[15:0]=0x00 */
+ REG_PCI_WRITE16(0xa4, 0x0000),
+ /* D20:F0:B0[21:17,14:13]=0000000b */
+ REG_PCI_RMW32(0xb0, ~0x00376000, 0x00000000),
+ /* D20:F0:50[31:0]=0x0bce6e5f */
+ REG_PCI_WRITE32(0x50, 0x0bce6e5f),
+ REG_SCRIPT_END
+};
+
+/* Warm Reset a USB3 port */
+static void xhci_reset_port_usb3(device_t dev, int port)
+{
+ struct reg_script reset_port_usb3_script[] = {
+ REG_SCRIPT_SET_DEV(dev),
+ /* Issue Warm Port Rest to the port */
+ REG_RES_OR32(PCI_BASE_ADDRESS_0, XHCI_USB3_PORTSC(port),
+ XHCI_USB3_PORTSC_WPR),
+ /* Wait up to 100ms for it to complete */
+ REG_RES_POLL32(PCI_BASE_ADDRESS_0, XHCI_USB3_PORTSC(port),
+ XHCI_USB3_PORTSC_WRC, XHCI_USB3_PORTSC_WRC,
+ XHCI_RESET_TIMEOUT),
+ /* Clear change status bits, do not set PED */
+ REG_RES_RMW32(PCI_BASE_ADDRESS_0, XHCI_USB3_PORTSC(port),
+ ~XHCI_USB3_PORTSC_PED, XHCI_USB3_PORTSC_CHST),
+ REG_SCRIPT_END
+ };
+ reg_script_run(reset_port_usb3_script);
+}
+
+/* Prepare ports to be routed to EHCI or XHCI */
+static void xhci_route_all(device_t dev)
+{
+ struct reg_script xhci_route_all_script[] = {
+ REG_SCRIPT_SET_DEV(dev),
+ /* USB3 SuperSpeed Enable */
+ REG_PCI_WRITE32(XHCI_USB3PR, BYTM_USB3_PORT_MAP),
+ /* USB2 Port Route to XHCI */
+ REG_PCI_WRITE32(XHCI_USB2PR, BYTM_USB2_PORT_MAP),
+ REG_SCRIPT_END
+ };
+ u32 port_disabled;
+ int port;
+
+ printk(BIOS_INFO, "USB: Route ports to XHCI controller\n");
+
+ /* Route ports to XHCI controller */
+ reg_script_run(xhci_route_all_script);
+
+ /* Reset enabled USB3 ports */
+ port_disabled = pci_read_config32(dev, XHCI_USB3PDO);
+ for (port = 0; port < BYTM_USB3_PORT_COUNT; port++) {
+ if (port_disabled & (1 << port))
+ continue;
+ xhci_reset_port_usb3(dev, port);
+ }
+}
+
+static void xhci_init(device_t dev)
+{
+ struct soc_intel_baytrail_config *config = dev->chip_info;
+ struct reg_script xhci_hc_init[] = {
+ REG_SCRIPT_SET_DEV(dev),
+ /* Setup USB3 phy */
+ REG_SCRIPT_NEXT(usb3_phy_script),
+ /* Initialize host controller */
+ REG_SCRIPT_NEXT(xhci_init_script),
+ /* Initialize clock gating */
+ REG_SCRIPT_NEXT(xhci_clock_gating_script),
+ /* Set USB2 Port Routing Mask */
+ REG_PCI_WRITE32(XHCI_USB2PRM, BYTM_USB2_PORT_MAP),
+ /* Set USB3 Port Routing Mask */
+ REG_PCI_WRITE32(XHCI_USB3PRM, BYTM_USB3_PORT_MAP),
+ /*
+ * Disable ports if requested
+ */
+ /* Open per-port disable control override */
+ REG_IO_RMW16(ACPI_BASE_ADDRESS + UPRWC, ~0, UPRWC_WR_EN),
+ REG_PCI_WRITE32(XHCI_USB2PDO, config->usb2_port_disable_mask),
+ REG_PCI_WRITE32(XHCI_USB3PDO, config->usb3_port_disable_mask),
+ /* Close per-port disable control override */
+ REG_IO_RMW16(ACPI_BASE_ADDRESS + UPRWC, ~UPRWC_WR_EN, 0),
+ REG_SCRIPT_END
+ };
+
+ /* Initialize XHCI controller */
+ reg_script_run(xhci_hc_init);
+
+ /* Route all ports to XHCI if requested */
+ if (config->usb_route_to_xhci)
+ xhci_route_all(dev);
+}
+
+static struct device_operations xhci_device_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = xhci_init,
+ .ops_pci = &soc_pci_ops,
+};
+
+static const struct pci_driver baytrail_xhci __pci_driver = {
+ .ops = &xhci_device_ops,
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = XHCI_DEVID
+};