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/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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.
*/
#include <post.h>
#if CONFIG_POST & CONFIG_SYS_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 *) CONFIG_SYS_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 & CONFIG_SYS_POST_USB */
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