Initial revision

1 files changed, 269 insertions, 0 deletions

diff --git a/post/usb.c b/post/usb.c
new file mode 100644
index 0000000..0c74cfa
--- /dev/null
+++ b/post/usb.c
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+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+/*
+ * USB test
+ *
+ * The USB controller is tested in the local loopback mode.
+ * It is configured so that endpoint 0 operates as host and endpoint 1
+ * operates as function endpoint. After that an IN token transaction
+ * is performed.
+ * Refer to MPC850 User Manual, Section 32.11.1 USB Host Controller
+ * Initialization Example.
+ */
+
+#ifdef CONFIG_POST
+
+#include <post.h>
+
+#if CONFIG_POST & CFG_POST_USB
+
+#include <commproc.h>
+#include <command.h>
+
+#define TOUT_LOOP 100
+
+#define	PROFF_USB		((uint)0x0000)
+
+#define CPM_USB_EP0_BASE	0x0a00
+#define CPM_USB_EP1_BASE	0x0a20
+
+#define CPM_USB_DT0_BASE	0x0a80
+#define CPM_USB_DT1_BASE	0x0a90
+#define CPM_USB_DR0_BASE	0x0aa0
+#define CPM_USB_DR1_BASE	0x0ab0
+
+#define CPM_USB_RX0_BASE	0x0b00
+#define CPM_USB_RX1_BASE	0x0b08
+#define CPM_USB_TX0_BASE	0x0b20
+#define CPM_USB_TX1_BASE	0x0b28
+
+#define USB_EXPECT(x)		if (!(x)) goto Done;
+
+typedef struct usb_param {
+	ushort ep0ptr;
+	ushort ep1ptr;
+	ushort ep2ptr;
+	ushort ep3ptr;
+	uint rstate;
+	uint rptr;
+	ushort frame_n;
+	ushort rbcnt;
+	ushort rtemp;
+} usb_param_t;
+
+typedef struct usb_param_block {
+	ushort rbase;
+	ushort tbase;
+	uchar rfcr;
+	uchar tfcr;
+	ushort mrblr;
+	ushort rbptr;
+	ushort tbptr;
+	uint tstate;
+	uint tptr;
+	ushort tcrc;
+	ushort tbcnt;
+	uint res[2];
+} usb_param_block_t;
+
+typedef struct usb {
+	uchar usmod;
+	uchar usadr;
+	uchar uscom;
+	uchar res1;
+	ushort usep[4];
+	uchar res2[4];
+	ushort usber;
+	uchar res3[2];
+	ushort usbmr;
+	uchar res4;
+	uchar usbs;
+	uchar res5[8];
+} usb_t;
+
+int usb_post_test (int flags)
+{
+	int res = -1;
+	volatile immap_t *im = (immap_t *) CFG_IMMR;
+	volatile cpm8xx_t *cp = &(im->im_cpm);
+	volatile usb_param_t *pram_ptr;
+	uint dpram;
+	ushort DPRAM;
+	volatile cbd_t *tx;
+	volatile cbd_t *rx;
+	volatile usb_t *usbr;
+	volatile usb_param_block_t *ep0;
+	volatile usb_param_block_t *ep1;
+	int j;
+
+	pram_ptr = (usb_param_t *) & (im->im_cpm.cp_dparam[PROFF_USB]);
+	dpram = (uint) im->im_cpm.cp_dpmem;
+	DPRAM = dpram;
+	tx = (cbd_t *) (dpram + CPM_USB_TX0_BASE);
+	rx = (cbd_t *) (dpram + CPM_USB_RX0_BASE);
+	ep0 = (usb_param_block_t *) (dpram + CPM_USB_EP0_BASE);
+	ep1 = (usb_param_block_t *) (dpram + CPM_USB_EP1_BASE);
+	usbr = (usb_t *) & (im->im_cpm.cp_scc[0]);
+
+	/* 01 */
+	im->im_ioport.iop_padir &= ~(ushort) 0x0200;
+	im->im_ioport.iop_papar |= (ushort) 0x0200;
+
+	cp->cp_sicr &= ~0x000000FF;
+	cp->cp_sicr |= 0x00000018;
+
+	cp->cp_brgc4 = 0x00010001;
+
+	/* 02 */
+	im->im_ioport.iop_padir &= ~(ushort) 0x0002;
+	im->im_ioport.iop_padir &= ~(ushort) 0x0001;
+
+	im->im_ioport.iop_papar |= (ushort) 0x0002;
+	im->im_ioport.iop_papar |= (ushort) 0x0001;
+
+	/* 03 */
+	im->im_ioport.iop_pcdir &= ~(ushort) 0x0020;
+	im->im_ioport.iop_pcdir &= ~(ushort) 0x0010;
+
+	im->im_ioport.iop_pcpar &= ~(ushort) 0x0020;
+	im->im_ioport.iop_pcpar &= ~(ushort) 0x0010;
+
+	im->im_ioport.iop_pcso |= (ushort) 0x0020;
+	im->im_ioport.iop_pcso |= (ushort) 0x0010;
+
+	/* 04 */
+	im->im_ioport.iop_pcdir |= (ushort) 0x0200;
+	im->im_ioport.iop_pcdir |= (ushort) 0x0100;
+
+	im->im_ioport.iop_pcpar |= (ushort) 0x0200;
+	im->im_ioport.iop_pcpar |= (ushort) 0x0100;
+
+	/* 05 */
+	pram_ptr->frame_n = 0;
+
+	/* 06 */
+	pram_ptr->ep0ptr = DPRAM + CPM_USB_EP0_BASE;
+	pram_ptr->ep1ptr = DPRAM + CPM_USB_EP1_BASE;
+
+	/* 07-10 */
+	tx[0].cbd_sc = 0xB800;
+	tx[0].cbd_datlen = 3;
+	tx[0].cbd_bufaddr = dpram + CPM_USB_DT0_BASE;
+
+	tx[1].cbd_sc = 0xBC80;
+	tx[1].cbd_datlen = 3;
+	tx[1].cbd_bufaddr = dpram + CPM_USB_DT1_BASE;
+
+	rx[0].cbd_sc = 0xA000;
+	rx[0].cbd_datlen = 0;
+	rx[0].cbd_bufaddr = dpram + CPM_USB_DR0_BASE;
+
+	rx[1].cbd_sc = 0xA000;
+	rx[1].cbd_datlen = 0;
+	rx[1].cbd_bufaddr = dpram + CPM_USB_DR1_BASE;
+
+	/* 11-12 */
+	*(volatile int *) (dpram + CPM_USB_DT0_BASE) = 0x69856000;
+	*(volatile int *) (dpram + CPM_USB_DT1_BASE) = 0xABCD1234;
+
+	*(volatile int *) (dpram + CPM_USB_DR0_BASE) = 0;
+	*(volatile int *) (dpram + CPM_USB_DR1_BASE) = 0;
+
+	/* 13-16 */
+	ep0->rbase = DPRAM + CPM_USB_RX0_BASE;
+	ep0->tbase = DPRAM + CPM_USB_TX0_BASE;
+	ep0->rfcr = 0x18;
+	ep0->tfcr = 0x18;
+	ep0->mrblr = 0x100;
+	ep0->rbptr = DPRAM + CPM_USB_RX0_BASE;
+	ep0->tbptr = DPRAM + CPM_USB_TX0_BASE;
+	ep0->tstate = 0;
+
+	/* 17-20 */
+	ep1->rbase = DPRAM + CPM_USB_RX1_BASE;
+	ep1->tbase = DPRAM + CPM_USB_TX1_BASE;
+	ep1->rfcr = 0x18;
+	ep1->tfcr = 0x18;
+	ep1->mrblr = 0x100;
+	ep1->rbptr = DPRAM + CPM_USB_RX1_BASE;
+	ep1->tbptr = DPRAM + CPM_USB_TX1_BASE;
+	ep1->tstate = 0;
+
+	/* 21-24 */
+	usbr->usep[0] = 0x0000;
+	usbr->usep[1] = 0x1100;
+	usbr->usep[2] = 0x2200;
+	usbr->usep[3] = 0x3300;
+
+	/* 25 */
+	usbr->usmod = 0x06;
+
+	/* 26 */
+	usbr->usadr = 0x05;
+
+	/* 27 */
+	usbr->uscom = 0;
+
+	/* 28 */
+	usbr->usmod |= 0x01;
+	udelay (1);
+
+	/* 29-30 */
+	usbr->uscom = 0x80;
+	usbr->uscom = 0x81;
+
+	/* Wait for the data packet to be transmitted */
+	for (j = 0; j < TOUT_LOOP; j++) {
+		if (tx[1].cbd_sc & (ushort) 0x8000)
+			udelay (1);
+		else
+			break;
+	}
+
+	USB_EXPECT (j < TOUT_LOOP);
+
+	USB_EXPECT (tx[0].cbd_sc == 0x3800);
+	USB_EXPECT (tx[0].cbd_datlen == 3);
+
+	USB_EXPECT (tx[1].cbd_sc == 0x3C80);
+	USB_EXPECT (tx[1].cbd_datlen == 3);
+
+	USB_EXPECT (rx[0].cbd_sc == 0x2C00);
+	USB_EXPECT (rx[0].cbd_datlen == 5);
+
+	USB_EXPECT (*(volatile int *) (dpram + CPM_USB_DR0_BASE) ==
+				0xABCD122B);
+	USB_EXPECT (*(volatile char *) (dpram + CPM_USB_DR0_BASE + 4) == 0x42);
+
+	res = 0;
+  Done:
+
+	return res;
+}
+
+#endif /* CONFIG_POST & CFG_POST_USB */
+
+#endif /* CONFIG_POST */