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-rw-r--r--board/bc3450/cmd_bc3450.c813
1 files changed, 813 insertions, 0 deletions
diff --git a/board/bc3450/cmd_bc3450.c b/board/bc3450/cmd_bc3450.c
new file mode 100644
index 0000000000..1442b68df1
--- /dev/null
+++ b/board/bc3450/cmd_bc3450.c
@@ -0,0 +1,813 @@
+/*
+ * (C) Copyright 2005
+ * Stefan Strobl, GERSYS GmbH, stefan.strobl@gersys.de
+ *
+ * (C) Copyright 2005
+ * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.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>
+#include <command.h>
+
+/*
+ * BC3450 specific commands
+ */
+#if (CONFIG_COMMANDS & CFG_CMD_BSP)
+
+#undef DEBUG
+#ifdef DEBUG
+# define dprintf(fmt,args...) printf(fmt, ##args)
+#else
+# define dprintf(fmt,args...)
+#endif
+
+/*
+ * Definitions for DS1620 chip
+ */
+#define THERM_START_CONVERT 0xee
+#define THERM_RESET 0xaf
+#define THERM_READ_CONFIG 0xac
+#define THERM_READ_TEMP 0xaa
+#define THERM_READ_TL 0xa2
+#define THERM_READ_TH 0xa1
+#define THERM_WRITE_CONFIG 0x0c
+#define THERM_WRITE_TL 0x02
+#define THERM_WRITE_TH 0x01
+
+#define CFG_CPU 2
+#define CFG_1SHOT 1
+#define CFG_STANDALONE 0
+
+struct therm {
+ int hi;
+ int lo;
+};
+
+/*
+ * SM501 Register
+ */
+#define SM501_GPIO_CTRL_LOW 0x00000008UL /* gpio pins 0..31 */
+#define SM501_GPIO_CTRL_HIGH 0x0000000CUL /* gpio pins 32..63 */
+#define SM501_POWER_MODE0_GATE 0x00000040UL
+#define SM501_POWER_MODE1_GATE 0x00000048UL
+#define POWER_MODE_GATE_GPIO_PWM_I2C 0x00000040UL
+#define SM501_GPIO_DATA_LOW 0x00010000UL
+#define SM501_GPIO_DATA_HIGH 0x00010004UL
+#define SM501_GPIO_DATA_DIR_LOW 0x00010008UL
+#define SM501_GPIO_DATA_DIR_HIGH 0x0001000CUL
+#define SM501_PANEL_DISPLAY_CONTROL 0x00080000UL
+#define SM501_CRT_DISPLAY_CONTROL 0x00080200UL
+
+/* SM501 CRT Display Control Bits */
+#define SM501_CDC_SEL (1 << 9)
+#define SM501_CDC_TE (1 << 8)
+#define SM501_CDC_E (1 << 2)
+
+/* SM501 Panel Display Control Bits */
+#define SM501_PDC_FPEN (1 << 27)
+#define SM501_PDC_BIAS (1 << 26)
+#define SM501_PDC_DATA (1 << 25)
+#define SM501_PDC_VDDEN (1 << 24)
+
+/* SM501 GPIO Data LOW Bits */
+#define SM501_GPIO24 0x01000000
+#define SM501_GPIO25 0x02000000
+#define SM501_GPIO26 0x04000000
+#define SM501_GPIO27 0x08000000
+#define SM501_GPIO28 0x10000000
+#define SM501_GPIO29 0x20000000
+#define SM501_GPIO30 0x40000000
+#define SM501_GPIO31 0x80000000
+
+/* SM501 GPIO Data HIGH Bits */
+#define SM501_GPIO46 0x00004000
+#define SM501_GPIO47 0x00008000
+#define SM501_GPIO48 0x00010000
+#define SM501_GPIO49 0x00020000
+#define SM501_GPIO50 0x00040000
+#define SM501_GPIO51 0x00080000
+
+/* BC3450 GPIOs @ SM501 Data LOW */
+#define DIP (SM501_GPIO24 | SM501_GPIO25 | SM501_GPIO26 | SM501_GPIO27)
+#define DS1620_DQ SM501_GPIO29 /* I/O */
+#define DS1620_CLK SM501_GPIO30 /* High active O/P */
+#define DS1620_RES SM501_GPIO31 /* Low active O/P */
+/* BC3450 GPIOs @ SM501 Data HIGH */
+#define BUZZER SM501_GPIO47 /* Low active O/P */
+#define DS1620_TLOW SM501_GPIO48 /* High active I/P */
+#define PWR_OFF SM501_GPIO49 /* Low active O/P */
+#define FP_DATA_TRI SM501_GPIO50 /* High active O/P */
+
+
+/*
+ * Initialise GPIO on SM501
+ *
+ * This function may be called from several other functions.
+ * Yet, the initialisation sequence is executed only the first
+ * time the function is called.
+ */
+int sm501_gpio_init(void)
+{
+ static int init_done = 0;
+
+ if(init_done) {
+/* dprintf("sm501_gpio_init: nothing to be done.\n"); */
+ return 1;
+ }
+
+ /* enable SM501 GPIO control (in both power modes) */
+ *(vu_long *) (SM501_MMIO_BASE + SM501_POWER_MODE0_GATE) |= POWER_MODE_GATE_GPIO_PWM_I2C;
+ *(vu_long *) (SM501_MMIO_BASE + SM501_POWER_MODE1_GATE) |= POWER_MODE_GATE_GPIO_PWM_I2C;
+
+ /* set up default O/Ps */
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &= ~(DS1620_RES | DS1620_CLK);
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_DQ;
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &= ~(FP_DATA_TRI);
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) |= (BUZZER | PWR_OFF);
+
+ /* configure directions for SM501 GPIO pins */
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_CTRL_LOW) &= ~(0xFF << 24);
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_CTRL_HIGH) &= ~(0x3F << 14);
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) &= ~(DIP | DS1620_DQ);
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) |= (DS1620_RES | DS1620_CLK);
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_HIGH) &= ~DS1620_TLOW;
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_HIGH) |= (PWR_OFF | BUZZER | FP_DATA_TRI);
+
+ init_done = 1;
+/* dprintf("sm501_gpio_init: done.\n"); */
+ return 0;
+}
+
+
+/*
+ * dip - read Config Inputs
+ *
+ * read and prints the dip switch
+ * and/or external config inputs (4bits) 0...0x0F
+ */
+int cmd_dip (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ vu_long rc = 0;
+
+ sm501_gpio_init();
+
+ /* read dip switch */
+ rc = *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW);
+ rc = ~rc;
+ rc &= DIP;
+ rc = (int)(rc >> 24);
+
+ /* plausibility check */
+ if (rc > 0x0F)
+ return -1;
+
+ printf ("0x%x\n", rc);
+ return 0;
+}
+
+U_BOOT_CMD(
+ dip , 1, 1, cmd_dip,
+ "dip - read dip switch and config inputs\n",
+ "\n"
+ " - prints the state of the dip switch and/or\n"
+ " external configuration inputs as hex value.\n"
+ " - \"Config 1\" is the LSB\n"
+ );
+
+
+/*
+ * buz - turns Buzzer on/off
+ */
+#ifdef CONFIG_BC3450_BUZZER
+static int cmd_buz (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ if (argc != 2) {
+ printf ("Usage:\nspecify one argument: \"on\" or \"off\"\n");
+ return 1;
+ }
+
+ sm501_gpio_init();
+
+ if (strncmp (argv[1], "on", 2) == 0) {
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &= ~(BUZZER);
+ return 0;
+ }
+ else if (strncmp (argv[1], "off", 3) == 0) {
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) |= BUZZER;
+ return 0;
+ }
+ printf ("Usage:\nspecify one argument: \"on\" or \"off\"\n");
+ return 1;
+}
+
+U_BOOT_CMD(
+ buz , 2, 1, cmd_buz,
+ "buz - turns buzzer on/off\n",
+ "\n"
+ "buz <on/off>\n"
+ " - turns the buzzer on or off\n"
+ );
+#endif /* CONFIG_BC3450_BUZZER */
+
+
+/*
+ * fp - front panel commands
+ */
+static int cmd_fp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ sm501_gpio_init();
+
+ if (strncmp (argv[1], "on", 2) == 0) {
+ /* turn on VDD first */
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_VDDEN;
+ udelay(1000);
+ /* then put data on */
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_DATA;
+ /* wait some time and enable backlight */
+ udelay(1000);
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_BIAS;
+ udelay(1000);
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_FPEN;
+ return 0;
+ }
+ else if (strncmp (argv[1], "off", 3) == 0) {
+ /* turn off the backlight first */
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_FPEN;
+ udelay(1000);
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_BIAS;
+ udelay(200000);
+ /* wait some time, then remove data */
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_DATA;
+ udelay(1000);
+ /* and remove VDD last */
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_VDDEN;
+ return 0;
+ }
+ else if (strncmp (argv[1], "bl", 2) == 0) {
+ /* turn on/off backlight only */
+ if (strncmp (argv[2], "on", 2) == 0) {
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_BIAS;
+ udelay(1000);
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) |= SM501_PDC_FPEN;
+ return 0;
+ }
+ else if (strncmp (argv[2], "off", 3) == 0) {
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_FPEN;
+ udelay(1000);
+ *(vu_long *)(SM501_MMIO_BASE + SM501_PANEL_DISPLAY_CONTROL) &= ~SM501_PDC_BIAS;
+ return 0;
+ }
+ }
+#ifdef CONFIG_BC3450_CRT
+ else if (strncmp (argv[1], "crt", 3) == 0) {
+ /* enables/disables the crt output (debug only) */
+ if(strncmp (argv[2], "on", 2) == 0) {
+ *(vu_long *)(SM501_MMIO_BASE + SM501_CRT_DISPLAY_CONTROL) |=
+ (SM501_CDC_TE | SM501_CDC_E);
+ *(vu_long *)(SM501_MMIO_BASE + SM501_CRT_DISPLAY_CONTROL) &=
+ ~SM501_CDC_SEL;
+ return 0;
+ }
+ else if (strncmp (argv[2], "off", 3) == 0) {
+ *(vu_long *)(SM501_MMIO_BASE + SM501_CRT_DISPLAY_CONTROL) &=
+ ~(SM501_CDC_TE | SM501_CDC_E);
+ *(vu_long *)(SM501_MMIO_BASE + SM501_CRT_DISPLAY_CONTROL) |=
+ SM501_CDC_SEL;
+ return 0;
+ }
+ }
+#endif /* CONFIG_BC3450_CRT */
+ printf("Usage:%s\n", cmdtp->help);
+ return 1;
+}
+
+U_BOOT_CMD(
+ fp , 3, 1, cmd_fp,
+ "fp - front panes access functions\n",
+ "\n"
+ "fp bl <on/off>\n"
+ " - turns the CCFL backlight of the display on/off\n"
+ "fp <on/off>\n"
+ " - turns the whole display on/off\n"
+#ifdef CONFIG_BC3450_CRT
+ "fp crt <on/off>\n"
+ " - enables/disables the crt output (debug only)\n"
+#endif /* CONFIG_BC3450_CRT */
+ );
+
+
+/*
+ * temp - DS1620 thermometer
+ */
+/* GERSYS BC3450 specific functions */
+static inline void bc_ds1620_set_clk(int clk)
+{
+ if(clk)
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_CLK;
+ else
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &= ~DS1620_CLK;
+}
+
+static inline void bc_ds1620_set_data(int dat)
+{
+ if(dat)
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_DQ;
+ else
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &= ~DS1620_DQ;
+}
+
+static inline int bc_ds1620_get_data(void)
+{
+ vu_long rc;
+ rc = *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW);
+ rc &= DS1620_DQ;
+ if(rc != 0)
+ rc = 1;
+ return (int)rc;
+}
+
+static inline void bc_ds1620_set_data_dir(int dir)
+{
+ if(dir) /* in */
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) &= ~DS1620_DQ;
+ else /* out */
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_DIR_LOW) |= DS1620_DQ;
+}
+
+static inline void bc_ds1620_set_reset(int res)
+{
+ if(res)
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) |= DS1620_RES;
+ else
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_LOW) &= ~DS1620_RES;
+}
+
+/* hardware independent functions */
+static void ds1620_send_bits(int nr, int value)
+{
+ int i;
+
+ for (i = 0; i < nr; i++) {
+ bc_ds1620_set_data(value & 1);
+ bc_ds1620_set_clk(0);
+ udelay(1);
+ bc_ds1620_set_clk(1);
+ udelay(1);
+
+ value >>= 1;
+ }
+}
+
+static unsigned int ds1620_recv_bits(int nr)
+{
+ unsigned int value = 0, mask = 1;
+ int i;
+
+ bc_ds1620_set_data(0);
+
+ for (i = 0; i < nr; i++) {
+ bc_ds1620_set_clk(0);
+ udelay(1);
+
+ if (bc_ds1620_get_data())
+ value |= mask;
+
+ mask <<= 1;
+
+ bc_ds1620_set_clk(1);
+ udelay(1);
+ }
+
+ return value;
+}
+
+static void ds1620_out(int cmd, int bits, int value)
+{
+ bc_ds1620_set_clk(1);
+ bc_ds1620_set_data_dir(0);
+
+ bc_ds1620_set_reset(0);
+ udelay(1);
+ bc_ds1620_set_reset(1);
+
+ udelay(1);
+
+ ds1620_send_bits(8, cmd);
+ if (bits)
+ ds1620_send_bits(bits, value);
+
+ udelay(1);
+
+ /* go stand alone */
+ bc_ds1620_set_data_dir(1);
+ bc_ds1620_set_reset(0);
+ bc_ds1620_set_clk(0);
+
+ udelay(10000);
+}
+
+static unsigned int ds1620_in(int cmd, int bits)
+{
+ unsigned int value;
+
+ bc_ds1620_set_clk(1);
+ bc_ds1620_set_data_dir(0);
+
+ bc_ds1620_set_reset(0);
+ udelay(1);
+ bc_ds1620_set_reset(1);
+
+ udelay(1);
+
+ ds1620_send_bits(8, cmd);
+
+ bc_ds1620_set_data_dir(1);
+ value = ds1620_recv_bits(bits);
+
+ /* go stand alone */
+ bc_ds1620_set_data_dir(1);
+ bc_ds1620_set_reset(0);
+ bc_ds1620_set_clk(0);
+
+ return value;
+}
+
+static int cvt_9_to_int(unsigned int val)
+{
+ if (val & 0x100)
+ val |= 0xfffffe00;
+
+ return val;
+}
+
+/* set thermostate thresholds */
+static void ds1620_write_state(struct therm *therm)
+{
+ ds1620_out(THERM_WRITE_TL, 9, therm->lo);
+ ds1620_out(THERM_WRITE_TH, 9, therm->hi);
+ ds1620_out(THERM_START_CONVERT, 0, 0);
+}
+
+static int cmd_temp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int i;
+ struct therm therm;
+
+ sm501_gpio_init();
+
+ /* print temperature */
+ if (argc == 1) {
+ i = cvt_9_to_int(ds1620_in(THERM_READ_TEMP, 9));
+ printf("%d.%d C\n", i >> 1, i & 1 ? 5 : 0);
+ return 0;
+ }
+
+ /* set to default operation */
+ if (strncmp (argv[1], "set", 3) == 0) {
+ if(strncmp (argv[2], "default", 3) == 0) {
+ therm.hi = +88;
+ therm.lo = -20;
+ therm.hi <<= 1;
+ therm.lo <<= 1;
+ ds1620_write_state(&therm);
+ ds1620_out(THERM_WRITE_CONFIG, 8, CFG_STANDALONE);
+ return 0;
+ }
+ }
+
+ printf ("Usage:%s\n", cmdtp->help);
+ return 1;
+}
+
+U_BOOT_CMD(
+ temp , 3, 1, cmd_temp,
+ "temp - print current temperature\n",
+ "\n"
+ "temp\n"
+ " - print current temperature\n"
+);
+
+#ifdef CONFIG_BC3450_CAN
+/*
+ * Initialise CAN interface
+ *
+ * return 1 on CAN initialization failure
+ * return 0 if no failure
+ */
+int can_init(void)
+{
+ static int init_done = 0;
+ int i;
+ struct mpc5xxx_mscan *can1 =
+ (struct mpc5xxx_mscan *)(CFG_MBAR + 0x0900);
+ struct mpc5xxx_mscan *can2 =
+ (struct mpc5xxx_mscan *)(CFG_MBAR + 0x0980);
+
+ /* GPIO configuration of the CAN pins is done in BC3450.h */
+
+ if (!init_done) {
+ /* init CAN 1 */
+ can1->canctl1 |= 0x80; /* CAN enable */
+ udelay(100);
+
+ i = 0;
+ can1->canctl0 |= 0x02; /* sleep mode */
+ /* wait until sleep mode reached */
+ while (!(can1->canctl1 & 0x02)) {
+ udelay(10);
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN1 initialize error, "
+ "can not enter sleep mode!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ }
+ i = 0;
+ can1->canctl0 = 0x01; /* enter init mode */
+ /* wait until init mode reached */
+ while (!(can1->canctl1 & 0x01)) {
+ udelay(10);
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN1 initialize error, "
+ "can not enter init mode!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ }
+ can1->canctl1 = 0x80;
+ can1->canctl1 |= 0x40;
+ can1->canbtr0 = 0x0F;
+ can1->canbtr1 = 0x7F;
+ can1->canidac &= ~(0x30);
+ can1->canidar1 = 0x00;
+ can1->canidar3 = 0x00;
+ can1->canidar5 = 0x00;
+ can1->canidar7 = 0x00;
+ can1->canidmr0 = 0xFF;
+ can1->canidmr1 = 0xFF;
+ can1->canidmr2 = 0xFF;
+ can1->canidmr3 = 0xFF;
+ can1->canidmr4 = 0xFF;
+ can1->canidmr5 = 0xFF;
+ can1->canidmr6 = 0xFF;
+ can1->canidmr7 = 0xFF;
+
+ i = 0;
+ can1->canctl0 &= ~(0x01); /* leave init mode */
+ can1->canctl0 &= ~(0x02);
+ /* wait until init and sleep mode left */
+ while ((can1->canctl1 & 0x01) || (can1->canctl1 & 0x02)) {
+ udelay(10);
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN1 initialize error, "
+ "can not leave init/sleep mode!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ }
+
+ /* init CAN 2 */
+ can2->canctl1 |= 0x80; /* CAN enable */
+ udelay(100);
+
+ i = 0;
+ can2->canctl0 |= 0x02; /* sleep mode */
+ /* wait until sleep mode reached */
+ while (!(can2->canctl1 & 0x02)) {
+ udelay(10);
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN2 initialize error, "
+ "can not enter sleep mode!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ }
+ i = 0;
+ can2->canctl0 = 0x01; /* enter init mode */
+ /* wait until init mode reached */
+ while (!(can2->canctl1 & 0x01)) {
+ udelay(10);
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN2 initialize error, "
+ "can not enter init mode!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ }
+ can2->canctl1 = 0x80;
+ can2->canctl1 |= 0x40;
+ can2->canbtr0 = 0x0F;
+ can2->canbtr1 = 0x7F;
+ can2->canidac &= ~(0x30);
+ can2->canidar1 = 0x00;
+ can2->canidar3 = 0x00;
+ can2->canidar5 = 0x00;
+ can2->canidar7 = 0x00;
+ can2->canidmr0 = 0xFF;
+ can2->canidmr1 = 0xFF;
+ can2->canidmr2 = 0xFF;
+ can2->canidmr3 = 0xFF;
+ can2->canidmr4 = 0xFF;
+ can2->canidmr5 = 0xFF;
+ can2->canidmr6 = 0xFF;
+ can2->canidmr7 = 0xFF;
+ can2->canctl0 &= ~(0x01); /* leave init mode */
+ can2->canctl0 &= ~(0x02);
+
+ i = 0;
+ /* wait until init mode left */
+ while ((can2->canctl1 & 0x01) || (can2->canctl1 & 0x02)) {
+ udelay(10);
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN2 initialize error, "
+ "can not leave init/sleep mode!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ }
+ init_done = 1;
+ }
+ return 0;
+}
+
+/*
+ * Do CAN test
+ * by sending message between CAN1 and CAN2
+ *
+ * return 1 on CAN failure
+ * return 0 if no failure
+ */
+int do_can(char *argv[])
+{
+ int i;
+ struct mpc5xxx_mscan *can1 =
+ (struct mpc5xxx_mscan *)(CFG_MBAR + 0x0900);
+ struct mpc5xxx_mscan *can2 =
+ (struct mpc5xxx_mscan *)(CFG_MBAR + 0x0980);
+
+ /* send a message on CAN1 */
+ can1->cantbsel = 0x01;
+ can1->cantxfg.idr[0] = 0x55;
+ can1->cantxfg.idr[1] = 0x00;
+ can1->cantxfg.idr[1] &= ~0x8;
+ can1->cantxfg.idr[1] &= ~0x10;
+ can1->cantxfg.dsr[0] = 0xCC;
+ can1->cantxfg.dlr = 1;
+ can1->cantxfg.tbpr = 0;
+ can1->cantflg = 0x01;
+
+ i = 0;
+ while ((can1->cantflg & 0x01) == 0) {
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN1 send timeout, "
+ "can not send message!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ udelay(1000);
+ }
+ udelay(1000);
+
+ i = 0;
+ while (!(can2->canrflg & 0x01)) {
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN2 receive timeout, "
+ "no message received!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ udelay(1000);
+ }
+
+ if (can2->canrxfg.dsr[0] != 0xCC) {
+ printf ("%s: CAN2 receive error, "
+ "data mismatch!\n",
+ __FUNCTION__);
+ return 1;
+ }
+
+ /* send a message on CAN2 */
+ can2->cantbsel = 0x01;
+ can2->cantxfg.idr[0] = 0x55;
+ can2->cantxfg.idr[1] = 0x00;
+ can2->cantxfg.idr[1] &= ~0x8;
+ can2->cantxfg.idr[1] &= ~0x10;
+ can2->cantxfg.dsr[0] = 0xCC;
+ can2->cantxfg.dlr = 1;
+ can2->cantxfg.tbpr = 0;
+ can2->cantflg = 0x01;
+
+ i = 0;
+ while ((can2->cantflg & 0x01) == 0) {
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN2 send error, "
+ "can not send message!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ udelay(1000);
+ }
+ udelay(1000);
+
+ i = 0;
+ while (!(can1->canrflg & 0x01)) {
+ i++;
+ if (i == 10) {
+ printf ("%s: CAN1 receive timeout, "
+ "no message received!\n",
+ __FUNCTION__);
+ return 1;
+ }
+ udelay(1000);
+ }
+
+ if (can1->canrxfg.dsr[0] != 0xCC) {
+ printf ("%s: CAN1 receive error 0x%02x\n",
+ __FUNCTION__, (can1->canrxfg.dsr[0]));
+ return 1;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_BC3450_CAN */
+
+/*
+ * test - BC3450 HW test routines
+ */
+int cmd_test(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+#ifdef CONFIG_BC3450_CAN
+ int rcode;
+ can_init();
+#endif /* CONFIG_BC3450_CAN */
+
+ sm501_gpio_init();
+
+ if (argc != 2) {
+ printf ("Usage:%s\n", cmdtp->help);
+ return 1;
+ }
+
+ if (strncmp (argv[1], "unit-off", 8) == 0) {
+ printf ("waiting 2 seconds...\n");
+ udelay(2000000);
+ *(vu_long *) (SM501_MMIO_BASE + SM501_GPIO_DATA_HIGH) &= ~PWR_OFF;
+ return 0;
+ }
+#ifdef CONFIG_BC3450_CAN
+ else if (strncmp (argv[1], "can", 2) == 0) {
+ rcode = do_can (argv);
+ if (simple_strtoul(argv[2], NULL, 10) == 2) {
+ if (rcode == 0)
+ printf ("OK\n");
+ else
+ printf ("Error\n");
+ }
+ return rcode;
+ }
+#endif /* CONFIG_BC3450_CAN */
+
+ printf ("Usage:%s\n", cmdtp->help);
+ return 1;
+}
+
+U_BOOT_CMD(
+ test , 2, 1, cmd_test,
+ "test - unit test routines\n",
+ "\n"
+#ifdef CONFIG_BC3450_CAN
+ "test can\n"
+ " - connect CAN1 (X8) with CAN2 (X9) for this test\n"
+#endif /* CONFIG_BC3450_CAN */
+ "test unit-off\n"
+ " - turns off the BC3450 unit\n"
+ " WARNING: Unsaved environment variables will be lost!\n"
+ );
+#endif /* CFG_CMD_BSP */
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