ipq806x: Add USB support

This patch adds code to initialize the two DWC3 USB host controllers and
their associated PHYs to the IPQ806x SoC (closely imitating the existing
DWC3 implementation for Exynos5), and uses them to initialize USB on the
Storm mainboard.

BUG=chrome-os-partner:29375
TEST=Hack up netboot to get around missing SPI flash, load a file over
TFTP. Hack a storage read into the storage attach function, dump the
data and confirm that it looks right. Enable USB debugging and confirm
3.0 devices get enumerated at SuperSpeed (mostly).

Original-Change-Id: Iaf7b96bef994081ca222b7de9d8e8c49751d3f1d
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/202157
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
(cherry picked from commit 6349e7281d5accb1247acb0537a48fa3a5e1bf97)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I749d265d45c6a807a7559bd4df2490a6eb8067af
Reviewed-on: http://review.coreboot.org/8056
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

3 files changed, 45 insertions, 0 deletions

diff --git a/src/soc/qualcomm/ipq806x/include/clock.h b/src/soc/qualcomm/ipq806x/include/clock.h
index c5d4121169..98f6661e02 100644
--- a/src/soc/qualcomm/ipq806x/include/clock.h
+++ b/src/soc/qualcomm/ipq806x/include/clock.h
@@ -63,6 +63,16 @@
 #define CFPB_SPLITTER_HCLK_CTL_REG          REG(0x026E0)
 #define EBI2_CLK_CTL_REG                    REG(0x03B00)
 
+#define USB30_MASTER_CLK_CTL_REG            REG(0x3b24)
+#define USB30_MASTER_CLK_MD                 REG(0x3b28)
+#define USB30_MASTER_CLK_NS                 REG(0x3b2c)
+#define USB30_1_MASTER_CLK_CTL_REG          REG(0x3b34)
+#define USB30_MOC_UTMI_CLK_MD               REG(0x3b40)
+#define USB30_MOC_UTMI_CLK_NS               REG(0x3b44)
+#define USB30_MOC_UTMI_CLK_CTL              REG(0x3b48)
+#define USB30_1_MOC_UTMI_CLK_CTL            REG(0x3b4c)
+#define USB30_RESET                         REG(0x3b50)
+
 #define ALWAYS_ON_CLK_BRANCH_ENA(i)         ((i) << 8)
 
 #define CLK_BRANCH_ENA_MASK                 0x00000010
@@ -182,5 +192,6 @@ void uart_pll_vote_clk_enable(unsigned int);
 void uart_clock_config(unsigned int gsbi_port, unsigned int m, unsigned int n,
 		unsigned int d, unsigned int clk_dummy);
 void nand_clock_config(void);
+void usb_clock_config(void);
 
 #endif  /*  __PLATFORM_IPQ860X_CLOCK_H_ */
diff --git a/src/soc/qualcomm/ipq806x/include/iomap.h b/src/soc/qualcomm/ipq806x/include/iomap.h
index be523a65cd..69744bcd51 100644
--- a/src/soc/qualcomm/ipq806x/include/iomap.h
+++ b/src/soc/qualcomm/ipq806x/include/iomap.h
@@ -85,6 +85,14 @@
 #define GPIO_CONFIG_ADDR(x) (TLMM_BASE_ADDR + 0x1000 + (x)*0x10)
 #define GPIO_IN_OUT_ADDR(x) (TLMM_BASE_ADDR + 0x1004 + (x)*0x10)
 
+/* Yes, this is not a typo... host2 is actually mapped before host1. */
+#define USB_HOST2_XHCI_BASE	0x10000000
+#define USB_HOST2_DWC3_BASE	0x1000C100
+#define USB_HOST2_PHY_BASE	0x100F8800
+#define USB_HOST1_XHCI_BASE	0x11000000
+#define USB_HOST1_DWC3_BASE	0x1100C100
+#define USB_HOST1_PHY_BASE	0x110F8800
+
 #define GSBI_1			1
 #define GSBI_2			2
 #define GSBI_4			4
diff --git a/src/soc/qualcomm/ipq806x/include/usb.h b/src/soc/qualcomm/ipq806x/include/usb.h
new file mode 100644
index 0000000000..c3c4c48ce9
--- /dev/null
+++ b/src/soc/qualcomm/ipq806x/include/usb.h
@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 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
+ */
+
+#ifndef _IPQ806X_USB_H_
+#define _IPQ806X_USB_H_
+
+void setup_usb_host1(void);
+void setup_usb_host2(void);
+
+#endif /* _IPQ806X_USB_H_ */