add uboot-oxnas

This adds support for the oxnas target in U-Boot 2014.04
History can be found at https://github.com/kref/u-boot-oxnas up to 2013.10
changes from 2013.10 to 2014.04 can be followed at
https://gitorious.org/openwrt-oxnas

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

SVN-Revision: 43389

1 files changed, 105 insertions, 0 deletions

diff --git a/package/boot/uboot-oxnas/files/drivers/usb/host/ehci-oxnas.c b/package/boot/uboot-oxnas/files/drivers/usb/host/ehci-oxnas.c
new file mode 100644
index 0000000000..6ab05c5116
--- /dev/null
+++ b/package/boot/uboot-oxnas/files/drivers/usb/host/ehci-oxnas.c
@@ -0,0 +1,105 @@
+/*
+ * drivers/usb/host/ehci-oxnas.c
+ *
+ * Tzachi Perelstein <tzachi@marvell.com>
+ *
+ * This file is licensed under  the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#include <common.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sysctl.h>
+#include <asm/arch/clock.h>
+
+#include "ehci.h"
+
+static struct ehci_hcor *ghcor;
+
+static int start_oxnas_usb_ehci(void)
+{
+#ifdef CONFIG_USB_PLLB_CLK
+	reset_block(SYS_CTRL_RST_PLLB, 0);
+	enable_clock(SYS_CTRL_CLK_REF600);
+
+	writel((1 << PLLB_ENSAT) | (1 << PLLB_OUTDIV) | (2 << PLLB_REFDIV),
+			SEC_CTRL_PLLB_CTRL0);
+	/* 600MHz pllb divider for 12MHz */
+	writel(PLLB_DIV_INT(50) | PLLB_DIV_FRAC(0), SEC_CTRL_PLLB_DIV_CTRL);
+#else
+	/* ref 300 divider for 12MHz */
+	writel(REF300_DIV_INT(25) | REF300_DIV_FRAC(0), SYS_CTRL_REF300_DIV);
+#endif
+
+	/* Ensure the USB block is properly reset */
+	reset_block(SYS_CTRL_RST_USBHS, 1);
+	reset_block(SYS_CTRL_RST_USBHS, 0);
+
+	reset_block(SYS_CTRL_RST_USBHSPHYA, 1);
+	reset_block(SYS_CTRL_RST_USBHSPHYA, 0);
+
+	reset_block(SYS_CTRL_RST_USBHSPHYB, 1);
+	reset_block(SYS_CTRL_RST_USBHSPHYB, 0);
+
+	/* Force the high speed clock to be generated all the time, via serial
+	 programming of the USB HS PHY */
+	writel((2UL << USBHSPHY_TEST_ADD) |
+		   (0xe0UL << USBHSPHY_TEST_DIN), SYS_CTRL_USBHSPHY_CTRL);
+
+	writel((1UL << USBHSPHY_TEST_CLK) |
+		   (2UL << USBHSPHY_TEST_ADD) |
+		   (0xe0UL << USBHSPHY_TEST_DIN), SYS_CTRL_USBHSPHY_CTRL);
+
+	writel((0xfUL << USBHSPHY_TEST_ADD) |
+		   (0xaaUL << USBHSPHY_TEST_DIN), SYS_CTRL_USBHSPHY_CTRL);
+
+	writel((1UL << USBHSPHY_TEST_CLK) |
+		   (0xfUL << USBHSPHY_TEST_ADD) |
+		   (0xaaUL << USBHSPHY_TEST_DIN), SYS_CTRL_USBHSPHY_CTRL);
+
+#ifdef CONFIG_USB_PLLB_CLK /* use pllb clock */
+		writel(USB_CLK_INTERNAL | USB_INT_CLK_PLLB, SYS_CTRL_USB_CTRL);
+#else /* use ref300 derived clock */
+		writel(USB_CLK_INTERNAL | USB_INT_CLK_REF300, SYS_CTRL_USB_CTRL);
+#endif
+	/* Enable the clock to the USB block */
+	enable_clock(SYS_CTRL_CLK_USBHS);
+
+	return 0;
+}
+int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
+		  struct ehci_hcor **hcor)
+{
+	start_oxnas_usb_ehci();
+	*hccr = (struct ehci_hccr *)(USB_HOST_BASE + 0x100);
+	*hcor = (struct ehci_hcor *)((uint32_t)*hccr +
+			HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
+	ghcor = *hcor;
+	return 0;
+}
+
+int ehci_hcd_stop(int index)
+{
+	reset_block(SYS_CTRL_RST_USBHS, 1);
+	disable_clock(SYS_CTRL_CLK_USBHS);
+	return 0;
+}
+
+extern void __ehci_set_usbmode(int index);
+void ehci_set_usbmode(int index)
+{
+	#define  or_txttfill_tuning	_reserved_1_[0]
+	u32 tmp;
+
+	__ehci_set_usbmode(index);
+
+	tmp = ehci_readl(&ghcor->or_txfilltuning);
+	tmp &= ~0x00ff0000;
+	tmp |= 0x003f0000; /* set burst pre load count to 0x40 (63 * 4 bytes)  */
+	tmp |= 0x16; /* set sheduler overhead to 22 * 1.267us (HS) or 22 * 6.33us (FS/LS)*/
+	ehci_writel(&ghcor->or_txfilltuning, tmp);
+
+	tmp = ehci_readl(&ghcor->or_txttfill_tuning);
+	tmp |= 0x2; /* set sheduler overhead to 2 * 6.333us */
+	ehci_writel(&ghcor->or_txttfill_tuning, tmp);
+}