board/cm5200/cmd_cm5200.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2007 Markus Kappeler <markus.kappeler@objectxp.com>
  *
  * Adapted for U-Boot 1.2 by Piotr Kruszynski <ppk@semihalf.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <common.h>
 #include <command.h>
 #include <i2c.h>
 #include <usb.h>

 #ifdef CONFIG_CMD_BSP

 static int do_i2c_test(char * const argv[])
 {
 	unsigned char temp, temp1;

 	printf("Starting I2C Test\n"
 		"Please set Jumper:\nI2C SDA 2-3\nI2C SCL 2-3\n\n"
 		"Please press any key to start\n\n");
 	getc();

 	temp = 0xf0; /* set io 0-4 as output */
 	i2c_write(CONFIG_SYS_I2C_IO, 3, 1, (uchar *)&temp, 1);

 	printf("Press I2C4-7. LED I2C0-3 should have the same state\n\n"
 		"Press any key to stop\n\n");

 	while (!tstc()) {
 		i2c_read(CONFIG_SYS_I2C_IO, 0, 1, (uchar *)&temp, 1);
 		temp1 = (temp >> 4) & 0x03;
 		temp1 |= (temp >> 3) & 0x08; /* S302 -> LED303 */
 		temp1 |= (temp >> 5) & 0x04; /* S303 -> LED302 */
 		temp = temp1;
 		i2c_write(CONFIG_SYS_I2C_IO, 1, 1, (uchar *)&temp, 1);
 	}
 	getc();

 	return 0;
 }

 static int do_usb_test(char * const argv[])
 {
 	int i;
 	static int usb_stor_curr_dev = -1; /* current device */

 	printf("Starting USB Test\n"
 		"Please insert USB Memmory Stick\n\n"
 		"Please press any key to start\n\n");
 	getc();

 	usb_stop();
 	printf("(Re)start USB...\n");
 	i = usb_init();
 #ifdef CONFIG_USB_STORAGE
 		/* try to recognize storage devices immediately */
 		if (i >= 0)
 			usb_stor_curr_dev = usb_stor_scan(1);
 #endif /* CONFIG_USB_STORAGE */
 	if (usb_stor_curr_dev >= 0)
 		printf("Found USB Storage Dev continue with Test...\n");
 	else {
 		printf("No USB Storage Device detected.. Stop Test\n");
 		return 1;
 	}

 	usb_stor_info();

 	printf("stopping USB..\n");
 	usb_stop();

 	return 0;
 }

 static int do_led_test(char * const argv[])
 {
 	int i = 0;
 	struct mpc5xxx_gpt_0_7 *gpt = (struct mpc5xxx_gpt_0_7 *)MPC5XXX_GPT;

 	printf("Starting LED Test\n"
 		"Please set Switch S500 all off\n\n"
 		"Please press any key to start\n\n");
 	getc();

 	/* configure timer 2-3 for simple GPIO output High */
 	gpt->gpt2.emsr |= 0x00000034;
 	gpt->gpt3.emsr |= 0x00000034;

 	(*(vu_long *)MPC5XXX_WU_GPIO_ENABLE) |= 0x80000000;
 	(*(vu_long *)MPC5XXX_WU_GPIO_DIR) |= 0x80000000;
 	printf("Please press any key to stop\n\n");
 	while (!tstc()) {
 		if (i == 1) {
 			(*(vu_long *)MPC5XXX_WU_GPIO_DATA_O) |= 0x80000000;
 			gpt->gpt2.emsr &= ~0x00000010;
 			gpt->gpt3.emsr &= ~0x00000010;
 		} else if (i == 2) {
 			(*(vu_long *)MPC5XXX_WU_GPIO_DATA_O) &= ~0x80000000;
 			gpt->gpt2.emsr &= ~0x00000010;
 			gpt->gpt3.emsr |= 0x00000010;
 		} else if (i >= 3) {
 			(*(vu_long *)MPC5XXX_WU_GPIO_DATA_O) &= ~0x80000000;
 			gpt->gpt3.emsr &= ~0x00000010;
 			gpt->gpt2.emsr |= 0x00000010;
 			i = 0;
 		}
 		i++;
 		udelay(200000);
 	}
 	getc();

 	(*(vu_long *)MPC5XXX_WU_GPIO_DATA_O) |= 0x80000000;
 	gpt->gpt2.emsr |= 0x00000010;
 	gpt->gpt3.emsr |= 0x00000010;

 	return 0;
 }

 static int do_rs232_test(char * const argv[])
 {
 	int error_status = 0;
 	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
 	struct mpc5xxx_psc *psc1 = (struct mpc5xxx_psc *)MPC5XXX_PSC1;

 	/* Configure PSC 2-3-6 as GPIO */
 	gpio->port_config &= 0xFF0FF80F;

 	switch (simple_strtoul(argv[2], NULL, 10)) {
 	case 1:
 		/* check RTS <-> CTS loop */
 		/* set rts to 0 */
 		printf("Uart 1 test: RX TX tested by using U-Boot\n"
 			"Please connect RTS with CTS on Uart1 plug\n\n"
 			"Press any key to start\n\n");
 		getc();

 		psc1->op1 |= 0x01;

 		/* wait some time before requesting status */
 		udelay(10);

 		/* check status at cts */
 		if ((psc1->ip & 0x01) != 0) {
 			error_status = 3;
 			printf("%s: failure at rs232_1, cts status is %d "
 				"(should be 0)\n",
 				__FUNCTION__, (psc1->ip & 0x01));
 		}

 		/* set rts to 1 */
 		psc1->op0 |= 0x01;

 		/* wait some time before requesting status */
 		udelay(10);

 		/* check status at cts */
 		if ((psc1->ip & 0x01) != 1) {
 			error_status = 3;
 			printf("%s: failure at rs232_1, cts status is %d "
 				"(should be 1)\n",
 				__FUNCTION__, (psc1->ip & 0x01));
 		}
 		break;
 	case 2:
 		/* set PSC2_0, PSC2_2 as output and PSC2_1, PSC2_3 as input */
 		printf("Uart 2 test: Please use RS232 Loopback plug on UART2\n"
 			"\nPress any key to start\n\n");
 		getc();

 		gpio->simple_gpioe &= ~(0x000000F0);
 		gpio->simple_gpioe |= 0x000000F0;
 		gpio->simple_ddr &= ~(0x000000F0);
 		gpio->simple_ddr |= 0x00000050;

 		/* check TXD <-> RXD loop */
 		/* set TXD to 1 */
 		gpio->simple_dvo |= (1 << 4);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000020) != 0x00000020) {
 			error_status = 2;
 			printf("%s: failure at rs232_2, rxd status is %d "
 				"(should be 1)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000020) >> 5);
 		}

 		/* set TXD to 0 */
 		gpio->simple_dvo &= ~(1 << 4);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000020) != 0x00000000) {
 			error_status = 2;
 			printf("%s: failure at rs232_2, rxd status is %d "
 				"(should be 0)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000020) >> 5);
 		}

 		/* check RTS <-> CTS loop */
 		/* set RTS to 1 */
 		gpio->simple_dvo |= (1 << 6);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000080) != 0x00000080) {
 			error_status = 3;
 			printf("%s: failure at rs232_2, cts status is %d "
 				"(should be 1)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000080) >> 7);
 		}

 		/* set RTS to 0 */
 		gpio->simple_dvo &= ~(1 << 6);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000080) != 0x00000000) {
 			error_status = 3;
 			printf("%s: failure at rs232_2, cts status is %d "
 				"(should be 0)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000080) >> 7);
 		}
 		break;
 	case 3:
 		/* set PSC3_0, PSC3_2 as output and PSC3_1, PSC3_3 as input */
 		printf("Uart 3 test: Please use RS232 Loopback plug on UART2\n"
 			"\nPress any key to start\n\n");
 		getc();

 		gpio->simple_gpioe &= ~(0x00000F00);
 		gpio->simple_gpioe |= 0x00000F00;

 		gpio->simple_ddr &= ~(0x00000F00);
 		gpio->simple_ddr |= 0x00000500;

 		/* check TXD <-> RXD loop */
 		/* set TXD to 1 */
 		gpio->simple_dvo |= (1 << 8);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000200) != 0x00000200) {
 			error_status = 2;
 			printf("%s: failure at rs232_3, rxd status is %d "
 				"(should be 1)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000200) >> 9);
 		}

 		/* set TXD to 0 */
 		gpio->simple_dvo &= ~(1 << 8);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000200) != 0x00000000) {
 			error_status = 2;
 			printf("%s: failure at rs232_3, rxd status is %d "
 				"(should be 0)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000200) >> 9);
 		}

 		/* check RTS <-> CTS loop */
 		/* set RTS to 1 */
 		gpio->simple_dvo |= (1 << 10);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000800) != 0x00000800) {
 			error_status = 3;
 			printf("%s: failure at rs232_3, cts status is %d "
 				"(should be 1)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000800) >> 11);
 		}

 		/* set RTS to 0 */
 		gpio->simple_dvo &= ~(1 << 10);

 		/* wait some time before requesting status */
 		udelay(10);

 		if ((gpio->simple_ival & 0x00000800) != 0x00000000) {
 			error_status = 3;
 			printf("%s: failure at rs232_3, cts status is %d "
 				"(should be 0)\n", __FUNCTION__,
 				(gpio->simple_ival & 0x00000800) >> 11);
 		}
 		break;
 	case 4:
 		/* set PSC6_2, PSC6_3 as output and PSC6_0, PSC6_1 as input */
 		printf("Uart 4 test: Please use RS232 Loopback plug on UART2\n"
 			"\nPress any key to start\n\n");
 		getc();

 		gpio->simple_gpioe &= ~(0xF0000000);
 		gpio->simple_gpioe |= 0x30000000;

 		gpio->simple_ddr &= ~(0xf0000000);
 		gpio->simple_ddr |= 0x30000000;

 		(*(vu_long *)MPC5XXX_WU_GPIO_ENABLE) |= 0x30000000;
 		(*(vu_long *)MPC5XXX_WU_GPIO_DIR) &= ~(0x30000000);

 		/* check TXD <-> RXD loop */
 		/* set TXD to 1 */
 		gpio->simple_dvo |= (1 << 28);

 		/* wait some time before requesting status */
 		udelay(10);

 		if (((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) & 0x10000000) !=
 				0x10000000) {
 			error_status = 2;
 			printf("%s: failure at rs232_4, rxd status is %lu "
 				"(should be 1)\n", __FUNCTION__,
 				((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) &
 					0x10000000) >> 28);
 		}

 		/* set TXD to 0 */
 		gpio->simple_dvo &= ~(1 << 28);

 		/* wait some time before requesting status */
 		udelay(10);

 		if (((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) & 0x10000000) !=
 				0x00000000) {
 			error_status = 2;
 			printf("%s: failure at rs232_4, rxd status is %lu "
 				"(should be 0)\n", __FUNCTION__,
 				((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) &
 					0x10000000) >> 28);
 		}

 		/* check RTS <-> CTS loop */
 		/* set RTS to 1 */
 		gpio->simple_dvo |= (1 << 29);

 		/* wait some time before requesting status */
 		udelay(10);

 		if (((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) & 0x20000000) !=
 				0x20000000) {
 			error_status = 3;
 			printf("%s: failure at rs232_4, cts status is %lu "
 				"(should be 1)\n", __FUNCTION__,
 				((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) &
 					0x20000000) >> 29);
 		}

 		/* set RTS to 0 */
 		gpio->simple_dvo &= ~(1 << 29);

 		/* wait some time before requesting status */
 		udelay(10);

 		if (((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) & 0x20000000) !=
 				0x00000000) {
 			error_status = 3;
 			printf("%s: failure at rs232_4, cts status is %lu "
 				"(should be 0)\n", __FUNCTION__,
 				((*(vu_long *)MPC5XXX_WU_GPIO_DATA_I) &
 					0x20000000) >> 29);
 		}
 		break;
 	default:
 		printf("%s: invalid rs232 number %s\n", __FUNCTION__, argv[2]);
 		error_status = 1;
 		break;
 	}
 	gpio->port_config |= (CONFIG_SYS_GPS_PORT_CONFIG & 0xFF0FF80F);

 	return error_status;
 }

 static int cmd_fkt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	int rcode = -1;

 	switch (argc) {
 	case 2:
 		if (strncmp(argv[1], "i2c", 3) == 0)
 			rcode = do_i2c_test(argv);
 		else if (strncmp(argv[1], "led", 3) == 0)
 			rcode = do_led_test(argv);
 		else if (strncmp(argv[1], "usb", 3) == 0)
 			rcode = do_usb_test(argv);
 		break;
 	case 3:
 		if (strncmp(argv[1], "rs232", 3) == 0)
 			rcode = do_rs232_test(argv);
 		break;
 	}

 	switch (rcode) {
 	case -1:
 		printf("Usage:\n"
 			"fkt { i2c | led | usb }\n"
 			"fkt rs232 number\n");
 		rcode = 1;
 		break;
 	case 0:
 		printf("Test passed\n");
 		break;
 	default:
 		printf("Test failed with code: %d\n", rcode);
 	}

 	return rcode;
 }

 U_BOOT_CMD(
 	fkt,	4,	1,	cmd_fkt,
 	"Function test routines",
 	"i2c\n"
 	"     - Test I2C communication\n"
 	"fkt led\n"
 	"     - Test LEDs\n"
 	"fkt rs232 number\n"
 	"     - Test RS232 (loopback plug(s) for RS232 required)\n"
 	"fkt usb\n"
 	"     - Test USB communication"
 );
 #endif /* CONFIG_CMD_BSP */
	/*
	* (C) Copyright 2007 Markus Kappeler <markus.kappeler@objectxp.com>
	*
	* Adapted for U-Boot 1.2 by Piotr Kruszynski <ppk@semihalf.com>
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <common.h>
	#include <command.h>
	#include <i2c.h>
	#include <usb.h>

	#ifdef CONFIG_CMD_BSP

	static int do_i2c_test(char * const argv[])
	{
	unsigned char temp, temp1;

	printf("Starting I2C Test\n"
	"Please set Jumper:\nI2C SDA 2-3\nI2C SCL 2-3\n\n"
	"Please press any key to start\n\n");
	getc();

	temp = 0xf0; /* set io 0-4 as output */
	i2c_write(CONFIG_SYS_I2C_IO, 3, 1, (uchar *)&temp, 1);

	printf("Press I2C4-7. LED I2C0-3 should have the same state\n\n"
	"Press any key to stop\n\n");

	while (!tstc()) {
	i2c_read(CONFIG_SYS_I2C_IO, 0, 1, (uchar *)&temp, 1);
	temp1 = (temp >> 4) & 0x03;
	temp1 \|= (temp >> 3) & 0x08; /* S302 -> LED303 */
	temp1 \|= (temp >> 5) & 0x04; /* S303 -> LED302 */
	temp = temp1;
	i2c_write(CONFIG_SYS_I2C_IO, 1, 1, (uchar *)&temp, 1);
	}
	getc();

	return 0;
	}

	static int do_usb_test(char * const argv[])
	{
	int i;
	static int usb_stor_curr_dev = -1; /* current device */

	printf("Starting USB Test\n"
	"Please insert USB Memmory Stick\n\n"
	"Please press any key to start\n\n");
	getc();

	usb_stop();
	printf("(Re)start USB...\n");
	i = usb_init();
	#ifdef CONFIG_USB_STORAGE
	/* try to recognize storage devices immediately */
	if (i >= 0)
	usb_stor_curr_dev = usb_stor_scan(1);
	#endif /* CONFIG_USB_STORAGE */
	if (usb_stor_curr_dev >= 0)
	printf("Found USB Storage Dev continue with Test...\n");
	else {
	printf("No USB Storage Device detected.. Stop Test\n");
	return 1;
	}

	usb_stor_info();

	printf("stopping USB..\n");
	usb_stop();

	return 0;
	}

	static int do_led_test(char * const argv[])
	{
	int i = 0;
	struct mpc5xxx_gpt_0_7 gpt = (struct mpc5xxx_gpt_0_7 )MPC5XXX_GPT;

	printf("Starting LED Test\n"
	"Please set Switch S500 all off\n\n"
	"Please press any key to start\n\n");
	getc();

	/* configure timer 2-3 for simple GPIO output High */
	gpt->gpt2.emsr \|= 0x00000034;
	gpt->gpt3.emsr \|= 0x00000034;

	((vu_long )MPC5XXX_WU_GPIO_ENABLE) \|= 0x80000000;
	((vu_long )MPC5XXX_WU_GPIO_DIR) \|= 0x80000000;
	printf("Please press any key to stop\n\n");
	while (!tstc()) {
	if (i == 1) {
	((vu_long )MPC5XXX_WU_GPIO_DATA_O) \|= 0x80000000;
	gpt->gpt2.emsr &= ~0x00000010;
	gpt->gpt3.emsr &= ~0x00000010;
	} else if (i == 2) {
	((vu_long )MPC5XXX_WU_GPIO_DATA_O) &= ~0x80000000;
	gpt->gpt2.emsr &= ~0x00000010;
	gpt->gpt3.emsr \|= 0x00000010;
	} else if (i >= 3) {
	((vu_long )MPC5XXX_WU_GPIO_DATA_O) &= ~0x80000000;
	gpt->gpt3.emsr &= ~0x00000010;
	gpt->gpt2.emsr \|= 0x00000010;
	i = 0;
	}
	i++;
	udelay(200000);
	}
	getc();

	((vu_long )MPC5XXX_WU_GPIO_DATA_O) \|= 0x80000000;
	gpt->gpt2.emsr \|= 0x00000010;
	gpt->gpt3.emsr \|= 0x00000010;

	return 0;
	}

	static int do_rs232_test(char * const argv[])
	{
	int error_status = 0;
	struct mpc5xxx_gpio gpio = (struct mpc5xxx_gpio )MPC5XXX_GPIO;
	struct mpc5xxx_psc psc1 = (struct mpc5xxx_psc )MPC5XXX_PSC1;

	/* Configure PSC 2-3-6 as GPIO */
	gpio->port_config &= 0xFF0FF80F;

	switch (simple_strtoul(argv[2], NULL, 10)) {
	case 1:
	/* check RTS <-> CTS loop */
	/* set rts to 0 */
	printf("Uart 1 test: RX TX tested by using U-Boot\n"
	"Please connect RTS with CTS on Uart1 plug\n\n"
	"Press any key to start\n\n");
	getc();

	psc1->op1 \|= 0x01;

	/* wait some time before requesting status */
	udelay(10);

	/* check status at cts */
	if ((psc1->ip & 0x01) != 0) {
	error_status = 3;
	printf("%s: failure at rs232_1, cts status is %d "
	"(should be 0)\n",
	__FUNCTION__, (psc1->ip & 0x01));
	}

	/* set rts to 1 */
	psc1->op0 \|= 0x01;

	/* wait some time before requesting status */
	udelay(10);

	/* check status at cts */
	if ((psc1->ip & 0x01) != 1) {
	error_status = 3;
	printf("%s: failure at rs232_1, cts status is %d "
	"(should be 1)\n",
	__FUNCTION__, (psc1->ip & 0x01));
	}
	break;
	case 2:
	/* set PSC2_0, PSC2_2 as output and PSC2_1, PSC2_3 as input */
	printf("Uart 2 test: Please use RS232 Loopback plug on UART2\n"
	"\nPress any key to start\n\n");
	getc();

	gpio->simple_gpioe &= ~(0x000000F0);
	gpio->simple_gpioe \|= 0x000000F0;
	gpio->simple_ddr &= ~(0x000000F0);
	gpio->simple_ddr \|= 0x00000050;

	/* check TXD <-> RXD loop */
	/* set TXD to 1 */
	gpio->simple_dvo \|= (1 << 4);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000020) != 0x00000020) {
	error_status = 2;
	printf("%s: failure at rs232_2, rxd status is %d "
	"(should be 1)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000020) >> 5);
	}

	/* set TXD to 0 */
	gpio->simple_dvo &= ~(1 << 4);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000020) != 0x00000000) {
	error_status = 2;
	printf("%s: failure at rs232_2, rxd status is %d "
	"(should be 0)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000020) >> 5);
	}

	/* check RTS <-> CTS loop */
	/* set RTS to 1 */
	gpio->simple_dvo \|= (1 << 6);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000080) != 0x00000080) {
	error_status = 3;
	printf("%s: failure at rs232_2, cts status is %d "
	"(should be 1)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000080) >> 7);
	}

	/* set RTS to 0 */
	gpio->simple_dvo &= ~(1 << 6);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000080) != 0x00000000) {
	error_status = 3;
	printf("%s: failure at rs232_2, cts status is %d "
	"(should be 0)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000080) >> 7);
	}
	break;
	case 3:
	/* set PSC3_0, PSC3_2 as output and PSC3_1, PSC3_3 as input */
	printf("Uart 3 test: Please use RS232 Loopback plug on UART2\n"
	"\nPress any key to start\n\n");
	getc();

	gpio->simple_gpioe &= ~(0x00000F00);
	gpio->simple_gpioe \|= 0x00000F00;

	gpio->simple_ddr &= ~(0x00000F00);
	gpio->simple_ddr \|= 0x00000500;

	/* check TXD <-> RXD loop */
	/* set TXD to 1 */
	gpio->simple_dvo \|= (1 << 8);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000200) != 0x00000200) {
	error_status = 2;
	printf("%s: failure at rs232_3, rxd status is %d "
	"(should be 1)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000200) >> 9);
	}

	/* set TXD to 0 */
	gpio->simple_dvo &= ~(1 << 8);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000200) != 0x00000000) {
	error_status = 2;
	printf("%s: failure at rs232_3, rxd status is %d "
	"(should be 0)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000200) >> 9);
	}

	/* check RTS <-> CTS loop */
	/* set RTS to 1 */
	gpio->simple_dvo \|= (1 << 10);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000800) != 0x00000800) {
	error_status = 3;
	printf("%s: failure at rs232_3, cts status is %d "
	"(should be 1)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000800) >> 11);
	}

	/* set RTS to 0 */
	gpio->simple_dvo &= ~(1 << 10);

	/* wait some time before requesting status */
	udelay(10);

	if ((gpio->simple_ival & 0x00000800) != 0x00000000) {
	error_status = 3;
	printf("%s: failure at rs232_3, cts status is %d "
	"(should be 0)\n", __FUNCTION__,
	(gpio->simple_ival & 0x00000800) >> 11);
	}
	break;
	case 4:
	/* set PSC6_2, PSC6_3 as output and PSC6_0, PSC6_1 as input */
	printf("Uart 4 test: Please use RS232 Loopback plug on UART2\n"
	"\nPress any key to start\n\n");
	getc();

	gpio->simple_gpioe &= ~(0xF0000000);
	gpio->simple_gpioe \|= 0x30000000;

	gpio->simple_ddr &= ~(0xf0000000);
	gpio->simple_ddr \|= 0x30000000;

	((vu_long )MPC5XXX_WU_GPIO_ENABLE) \|= 0x30000000;
	((vu_long )MPC5XXX_WU_GPIO_DIR) &= ~(0x30000000);

	/* check TXD <-> RXD loop */
	/* set TXD to 1 */
	gpio->simple_dvo \|= (1 << 28);

	/* wait some time before requesting status */
	udelay(10);

	if ((((vu_long )MPC5XXX_WU_GPIO_DATA_I) & 0x10000000) !=
	0x10000000) {
	error_status = 2;
	printf("%s: failure at rs232_4, rxd status is %lu "
	"(should be 1)\n", __FUNCTION__,
	(((vu_long )MPC5XXX_WU_GPIO_DATA_I) &
	0x10000000) >> 28);
	}

	/* set TXD to 0 */
	gpio->simple_dvo &= ~(1 << 28);

	/* wait some time before requesting status */
	udelay(10);

	if ((((vu_long )MPC5XXX_WU_GPIO_DATA_I) & 0x10000000) !=
	0x00000000) {
	error_status = 2;
	printf("%s: failure at rs232_4, rxd status is %lu "
	"(should be 0)\n", __FUNCTION__,
	(((vu_long )MPC5XXX_WU_GPIO_DATA_I) &
	0x10000000) >> 28);
	}

	/* check RTS <-> CTS loop */
	/* set RTS to 1 */
	gpio->simple_dvo \|= (1 << 29);

	/* wait some time before requesting status */
	udelay(10);

	if ((((vu_long )MPC5XXX_WU_GPIO_DATA_I) & 0x20000000) !=
	0x20000000) {
	error_status = 3;
	printf("%s: failure at rs232_4, cts status is %lu "
	"(should be 1)\n", __FUNCTION__,
	(((vu_long )MPC5XXX_WU_GPIO_DATA_I) &
	0x20000000) >> 29);
	}

	/* set RTS to 0 */
	gpio->simple_dvo &= ~(1 << 29);

	/* wait some time before requesting status */
	udelay(10);

	if ((((vu_long )MPC5XXX_WU_GPIO_DATA_I) & 0x20000000) !=
	0x00000000) {
	error_status = 3;
	printf("%s: failure at rs232_4, cts status is %lu "
	"(should be 0)\n", __FUNCTION__,
	(((vu_long )MPC5XXX_WU_GPIO_DATA_I) &
	0x20000000) >> 29);
	}
	break;
	default:
	printf("%s: invalid rs232 number %s\n", __FUNCTION__, argv[2]);
	error_status = 1;
	break;
	}
	gpio->port_config \|= (CONFIG_SYS_GPS_PORT_CONFIG & 0xFF0FF80F);

	return error_status;
	}

	static int cmd_fkt(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	int rcode = -1;

	switch (argc) {
	case 2:
	if (strncmp(argv[1], "i2c", 3) == 0)
	rcode = do_i2c_test(argv);
	else if (strncmp(argv[1], "led", 3) == 0)
	rcode = do_led_test(argv);
	else if (strncmp(argv[1], "usb", 3) == 0)
	rcode = do_usb_test(argv);
	break;
	case 3:
	if (strncmp(argv[1], "rs232", 3) == 0)
	rcode = do_rs232_test(argv);
	break;
	}

	switch (rcode) {
	case -1:
	printf("Usage:\n"
	"fkt { i2c \| led \| usb }\n"
	"fkt rs232 number\n");
	rcode = 1;
	break;
	case 0:
	printf("Test passed\n");
	break;
	default:
	printf("Test failed with code: %d\n", rcode);
	}

	return rcode;
	}

	U_BOOT_CMD(
	fkt, 4, 1, cmd_fkt,
	"Function test routines",
	"i2c\n"
	" - Test I2C communication\n"
	"fkt led\n"
	" - Test LEDs\n"
	"fkt rs232 number\n"
	" - Test RS232 (loopback plug(s) for RS232 required)\n"
	"fkt usb\n"
	" - Test USB communication"
	);
	#endif /* CONFIG_CMD_BSP */