inka4x0: Add hardware diagnosis functions for inka4x0

This patch adds advanced diagnosis functions for the inka4x0 board.

Signed-off-by: Andreas Pfefferle <ap@denx.de>
Signed-off-by: Detlev Zundel <dzu@denx.de>

1 files changed, 514 insertions, 0 deletions

diff --git a/board/inka4x0/inkadiag.c b/board/inka4x0/inkadiag.c
new file mode 100644
index 0000000..06c9807
--- /dev/null
+++ b/board/inka4x0/inkadiag.c
@@ -0,0 +1,514 @@
+/*
+ * (C) Copyright 2008, 2009 Andreas Pfefferle,
+ *     DENX Software Engineering, ap@denx.de.
+ * (C) Copyright 2009 Detlev Zundel,
+ *     DENX Software Engineering, dzu@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 <asm/io.h>
+#include <common.h>
+#include <config.h>
+#include <mpc5xxx.h>
+#include <pci.h>
+
+#include <command.h>
+
+/* This is needed for the includes in ns16550.h */
+#define CONFIG_SYS_NS16550_REG_SIZE 1
+#include <ns16550.h>
+
+#define GPIO_BASE		((u_char *)CONFIG_SYS_CS3_START)
+
+#define DIGIN_TOUCHSCR_MASK	0x00003000	/* Inputs 12-13 */
+#define DIGIN_KEYB_MASK		0x00010000	/* Input 16 */
+
+#define DIGIN_DRAWER_SW1	0x00400000	/* Input 22 */
+#define DIGIN_DRAWER_SW2	0x00800000	/* Input 23 */
+
+#define DIGIO_LED0		0x00000001	/* Output 0 */
+#define DIGIO_LED1		0x00000002	/* Output 1 */
+#define DIGIO_LED2		0x00000004	/* Output 2 */
+#define DIGIO_LED3		0x00000008	/* Output 3 */
+#define DIGIO_LED4		0x00000010	/* Output 4 */
+#define DIGIO_LED5		0x00000020	/* Output 5 */
+
+#define DIGIO_DRAWER1		0x00000100	/* Output 8 */
+#define DIGIO_DRAWER2		0x00000200	/* Output 9 */
+
+#define SERIAL_PORT_BASE	((u_char *)CONFIG_SYS_CS2_START)
+
+#define PSC_OP1_RTS	0x01
+#define PSC_OP0_RTS	0x01
+
+/*
+ * Table with supported baudrates (defined in inka4x0.h)
+ */
+static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
+#define	N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
+
+static unsigned int inka_digin_get_input(void)
+{
+	return in_8(GPIO_BASE + 0) << 0 | in_8(GPIO_BASE + 1) << 8 |
+		in_8(GPIO_BASE + 2) << 16 | in_8(GPIO_BASE + 3) << 24;
+}
+
+#define LED_HIGH(NUM)							\
+	do {								\
+		setbits_be32((unsigned *)MPC5XXX_GPT##NUM##_ENABLE, 0x10); \
+	} while (0)
+
+#define LED_LOW(NUM)							\
+	do {								\
+		clrbits_be32((unsigned *)MPC5XXX_GPT##NUM##_ENABLE, 0x10); \
+	} while (0)
+
+#define CHECK_LED(NUM) \
+    do { \
+	    if (state & (1 << NUM)) {		\
+		    LED_HIGH(NUM);		\
+	    } else {				\
+		    LED_LOW(NUM);		\
+	    }					\
+    } while (0)
+
+static void inka_digio_set_output(unsigned int state, int which)
+{
+	volatile struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
+
+	if (which == 0) {
+		/* other */
+		CHECK_LED(0);
+		CHECK_LED(1);
+		CHECK_LED(2);
+		CHECK_LED(3);
+		CHECK_LED(4);
+		CHECK_LED(5);
+	} else {
+		if (which == 1) {
+			/* drawer1 */
+			if (state) {
+				clrbits_be32(&gpio->simple_dvo, 0x1000);
+				udelay(1);
+				setbits_be32(&gpio->simple_dvo, 0x1000);
+			} else {
+				setbits_be32(&gpio->simple_dvo, 0x1000);
+				udelay(1);
+				clrbits_be32(&gpio->simple_dvo, 0x1000);
+			}
+		}
+		if (which == 2) {
+			/* drawer 2 */
+			if (state) {
+				clrbits_be32(&gpio->simple_dvo, 0x2000);
+				udelay(1);
+				setbits_be32(&gpio->simple_dvo, 0x2000);
+			} else {
+				setbits_be32(&gpio->simple_dvo, 0x2000);
+				udelay(1);
+				clrbits_be32(&gpio->simple_dvo, 0x2000);
+			}
+		}
+	}
+	udelay(1);
+}
+
+static int do_inkadiag_io(cmd_tbl_t *cmdtp, int flag, int argc,
+			  char *argv[]) {
+	unsigned int state, val;
+
+	switch (argc) {
+	case 3:
+		/* Write a value */
+		val = simple_strtol(argv[2], NULL, 16);
+
+		if (strcmp(argv[1], "drawer1") == 0) {
+			inka_digio_set_output(val, 1);
+		} else if (strcmp(argv[1], "drawer2") == 0) {
+			inka_digio_set_output(val, 2);
+		} else if (strcmp(argv[1], "other") == 0)
+			inka_digio_set_output(val, 0);
+		else {
+			printf("Invalid argument: %s\n", argv[1]);
+			return -1;
+		}
+		/* fall through */
+	case 2:
+		/* Read a value */
+		state = inka_digin_get_input();
+
+		if (strcmp(argv[1], "drawer1") == 0) {
+			val = (state & DIGIN_DRAWER_SW1) >> (ffs(DIGIN_DRAWER_SW1) - 1);
+		} else if (strcmp(argv[1], "drawer2") == 0) {
+			val = (state & DIGIN_DRAWER_SW2) >> (ffs(DIGIN_DRAWER_SW2) - 1);
+		} else if (strcmp(argv[1], "other") == 0) {
+			val = ((state & DIGIN_KEYB_MASK) >> (ffs(DIGIN_KEYB_MASK) - 1))
+				| (state & DIGIN_TOUCHSCR_MASK) >> (ffs(DIGIN_TOUCHSCR_MASK) - 2);
+		} else {
+			printf("Invalid argument: %s\n", argv[1]);
+			return -1;
+		}
+		printf("exit code: 0x%X\n", val);
+		return 0;
+	default:
+		cmd_usage(cmdtp);
+		break;
+	}
+
+	return -1;
+}
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int ser_init(volatile struct mpc5xxx_psc *psc, int baudrate)
+{
+	unsigned long baseclk;
+	int div;
+
+	/* reset PSC */
+	out_8(&psc->command, PSC_SEL_MODE_REG_1);
+
+	/* select clock sources */
+
+	out_be16(&psc->psc_clock_select, 0);
+	baseclk = (gd->ipb_clk + 16) / 32;
+
+	/* switch to UART mode */
+	out_be32(&psc->sicr, 0);
+
+	/* configure parity, bit length and so on */
+
+	out_8(&psc->mode, PSC_MODE_8_BITS | PSC_MODE_PARNONE);
+	out_8(&psc->mode, PSC_MODE_ONE_STOP);
+
+	/* set up UART divisor */
+	div = (baseclk + (baudrate / 2)) / baudrate;
+	out_8(&psc->ctur, (div >> 8) & 0xff);
+	out_8(&psc->ctlr, div & 0xff);
+
+	/* disable all interrupts */
+	out_be16(&psc->psc_imr, 0);
+
+	/* reset and enable Rx/Tx */
+	out_8(&psc->command, PSC_RST_RX);
+	out_8(&psc->command, PSC_RST_TX);
+	out_8(&psc->command, PSC_RX_ENABLE | PSC_TX_ENABLE);
+
+	return 0;
+}
+
+static void ser_putc(volatile struct mpc5xxx_psc *psc, const char c)
+{
+	/* Wait 1 second for last character to go. */
+	int i = 0;
+
+	while (!(psc->psc_status & PSC_SR_TXEMP) && (i++ < 1000000/10))
+		udelay(10);
+	psc->psc_buffer_8 = c;
+
+}
+
+static int ser_getc(volatile struct mpc5xxx_psc *psc)
+{
+	/* Wait for a character to arrive. */
+	int i = 0;
+
+	while (!(in_be16(&psc->psc_status) & PSC_SR_RXRDY) && (i++ < 1000000/10))
+		udelay(10);
+
+	return in_8(&psc->psc_buffer_8);
+}
+
+static int do_inkadiag_serial(cmd_tbl_t *cmdtp, int flag, int argc,
+			      char *argv[]) {
+	volatile struct NS16550 *uart;
+	volatile struct mpc5xxx_psc *psc;
+	unsigned int num, mode;
+	int combrd, baudrate, i, j, len;
+	int address;
+
+	if (argc < 5) {
+		cmd_usage(cmdtp);
+		return 1;
+	}
+
+	argc--;
+	argv++;
+
+	num = simple_strtol(argv[0], NULL, 0);
+	if (num < 0 || num > 11) {
+		printf("invalid argument for num: %d\n", num);
+		return -1;
+	}
+
+	mode = simple_strtol(argv[1], NULL, 0);
+
+	combrd = 0;
+	baudrate = simple_strtoul(argv[2], NULL, 10);
+	for (i=0; i<N_BAUDRATES; ++i) {
+		if (baudrate == baudrate_table[i])
+			break;
+	}
+	if (i == N_BAUDRATES) {
+		printf("## Baudrate %d bps not supported\n",
+		       baudrate);
+		return 1;
+	}
+	combrd = 115200 / baudrate;
+
+	uart = (struct NS16550 *)(SERIAL_PORT_BASE + (num << 3));
+
+	printf("Testing uart %d.\n\n", num);
+
+	if ((num >= 0) && (num <= 7)) {
+		if (mode & 1) {
+			/* turn on 'loopback' mode */
+			out_8(&uart->mcr, MCR_LOOP);
+		} else {
+			/*
+			 * establish the UART's operational parameters
+			 * set DLAB=1, so rbr accesses DLL
+			 */
+			out_8(&uart->lcr, LCR_DLAB);
+			/* set baudrate */
+			out_8(&uart->rbr, combrd);
+			/* set data-format: 8-N-1 */
+			out_8(&uart->lcr, LCR_WLS_8);
+		}
+
+		if (mode & 2) {
+			/* set request to send */
+			out_8(&uart->mcr, MCR_RTS);
+			udelay(10);
+			/* check clear to send */
+			if ((in_8(&uart->msr) & MSR_CTS) == 0x00)
+				return -1;
+		}
+		if (mode & 4) {
+			/* set data terminal ready */
+			out_8(&uart->mcr, MCR_DTR);
+			udelay(10);
+			/* check data set ready and carrier detect */
+			if ((in_8(&uart->msr) & (MSR_DSR | MSR_DCD))
+			    != (MSR_DSR | MSR_DCD))
+				return -1;
+		}
+
+		/* write each message-character, read it back, and display it */
+		for (i = 0, len = strlen(argv[3]); i < len; ++i) {
+			j = 0;
+			while ((in_8(&uart->lsr) & LSR_THRE) ==	0x00) {
+				if (j++ > CONFIG_SYS_HZ)
+					break;
+				udelay(10);
+			}
+			out_8(&uart->rbr, argv[3][i]);
+			j = 0;
+			while ((in_8(&uart->lsr) & LSR_DR) == 0x00) {
+				if (j++ > CONFIG_SYS_HZ)
+					break;
+				udelay(10);
+			}
+			printf("%c", in_8(&uart->rbr));
+		}
+		printf("\n\n");
+		out_8(&uart->mcr, 0x00);
+	} else {
+		address = 0;
+
+		switch (num) {
+		case 8:
+			address = MPC5XXX_PSC6;
+			break;
+		case 9:
+			address = MPC5XXX_PSC3;
+			break;
+		case 10:
+			address = MPC5XXX_PSC2;
+			break;
+		case 11:
+			address = MPC5XXX_PSC1;
+			break;
+		}
+		psc = (struct mpc5xxx_psc *)address;
+		ser_init(psc, simple_strtol(argv[2], NULL, 0));
+		if (mode & 2) {
+			/* set request to send */
+			out_8(&psc->op0, PSC_OP0_RTS);
+			udelay(10);
+			/* check clear to send */
+			if ((in_8(&psc->ip) & PSC_IPCR_CTS) == 0)
+				return -1;
+		}
+		len = strlen(argv[3]);
+		for (i = 0; i < len; ++i) {
+			ser_putc(psc, argv[3][i]);
+			printf("%c", ser_getc(psc));
+		}
+		printf("\n\n");
+	}
+	return 0;
+}
+
+#define BUZZER_GPT	(MPC5XXX_GPT + 0x60)	/* GPT6 */
+static void buzzer_turn_on(unsigned int freq)
+{
+	volatile struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt *)(BUZZER_GPT);
+
+	const u32 prescale = gd->ipb_clk / freq / 128;
+	const u32 count = 128;
+	const u32 width = 64;
+
+	gpt->cir = (prescale << 16) | count;
+	gpt->pwmcr = width << 16;
+	gpt->emsr = 3;		/* Timer enabled for PWM */
+}
+
+static void buzzer_turn_off(void)
+{
+	volatile struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt *)(BUZZER_GPT);
+
+	gpt->emsr = 0;
+}
+
+static int do_inkadiag_buzzer(cmd_tbl_t *cmdtp, int flag, int argc,
+			      char *argv[]) {
+
+	unsigned int period, freq;
+	int prev, i;
+
+	if (argc != 3) {
+		cmd_usage(cmdtp);
+		return 1;
+	}
+
+	argc--;
+	argv++;
+
+	period = simple_strtol(argv[0], NULL, 0);
+	if (!period)
+		printf("Zero period is senseless\n");
+	argc--;
+	argv++;
+
+	freq = simple_strtol(argv[0], NULL, 0);
+	/* avoid zero prescale in buzzer_turn_on() */
+	if (freq > gd->ipb_clk / 128) {
+		printf("%dHz exceeds maximum (%ldHz)\n", freq,
+		       gd->ipb_clk / 128);
+	} else if (!freq)
+		printf("Zero frequency is senseless\n");
+	else
+		buzzer_turn_on(freq);
+
+	clear_ctrlc();
+	prev = disable_ctrlc(0);
+
+	printf("Buzzing for %d ms. Type ^C to abort!\n\n", period);
+
+	i = 0;
+	while (!ctrlc() && (i++ < CONFIG_SYS_HZ))
+		udelay(period);
+
+	clear_ctrlc();
+	disable_ctrlc(prev);
+
+	buzzer_turn_off();
+
+	return 0;
+}
+
+static int do_inkadiag_help(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
+cmd_tbl_t cmd_inkadiag_sub[] = {
+	U_BOOT_CMD_MKENT(io, 1, 1, do_inkadiag_io, "read digital input",
+	 "<drawer1|drawer2|other> [value] - get or set specified signal\n"),
+	U_BOOT_CMD_MKENT(serial, 4, 1, do_inkadiag_serial, "test serial port",
+	 "<num> <mode> <baudrate> <msg>  - test uart num [0..11] in mode\n"
+	 "and baudrate with msg\n"),
+	U_BOOT_CMD_MKENT(buzzer, 2, 1, do_inkadiag_buzzer, "activate buzzer",
+	 "<period> <freq> - turn buzzer on for period ms with freq hz\n"),
+	U_BOOT_CMD_MKENT(help, 4, 1, do_inkadiag_help, "get help",
+	 "[command] - get help for command\n"),
+};
+
+static int do_inkadiag_help(cmd_tbl_t *cmdtp, int flag,
+			    int argc, char *argv[]) {
+	extern int _do_help (cmd_tbl_t *cmd_start, int cmd_items,
+			     cmd_tbl_t *cmdtp, int flag,
+			     int argc, char *argv[]);
+	/* do_help prints command name - we prepend inkadiag to our subcommands! */
+#ifdef CONFIG_SYS_LONGHELP
+	puts ("inkadiag ");
+#endif
+	return _do_help(&cmd_inkadiag_sub[0],
+		ARRAY_SIZE(cmd_inkadiag_sub), cmdtp, flag, argc, argv);
+}
+
+static int do_inkadiag(cmd_tbl_t *cmdtp, int flag, int argc,
+		       char *argv[]) {
+	cmd_tbl_t *c;
+
+	c = find_cmd_tbl(argv[1], &cmd_inkadiag_sub[0], ARRAY_SIZE(cmd_inkadiag_sub));
+
+	if (c) {
+		argc--;
+		argv++;
+		return c->cmd(c, flag, argc, argv);
+	} else {
+		/* Unrecognized command */
+		cmd_usage(cmdtp);
+		return 1;
+	}
+}
+
+U_BOOT_CMD(inkadiag, 6, 1, do_inkadiag,
+	   "inkadiag - inka diagnosis\n",
+	   "[inkadiag what ...]\n"
+	   "    - perform a diagnosis on inka hardware\n"
+	   "'inkadiag' performs hardware tests.\n\n");
+
+/* Relocate the command table function pointers when running in RAM */
+int inkadiag_init_r (void) {
+	cmd_tbl_t *cmdtp;
+
+	for (cmdtp = &cmd_inkadiag_sub[0]; cmdtp !=
+		     &cmd_inkadiag_sub[ARRAY_SIZE(cmd_inkadiag_sub)]; cmdtp++) {
+		ulong addr;
+
+		addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
+		cmdtp->cmd = (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
+
+		addr = (ulong)(cmdtp->name) + gd->reloc_off;
+		cmdtp->name = (char *)addr;
+
+		if (cmdtp->usage) {
+			addr = (ulong)(cmdtp->usage) + gd->reloc_off;
+			cmdtp->usage = (char *)addr;
+		}
+#ifdef CONFIG_SYS_LONGHELP
+		if (cmdtp->help) {
+			addr = (ulong)(cmdtp->help) + gd->reloc_off;
+			cmdtp->help = (char *)addr;
+		}
+#endif
+	}
+	return 0;
+}