diff options
Diffstat (limited to 'post/board/lwmon5')
-rw-r--r-- | post/board/lwmon5/Makefile | 28 | ||||
-rw-r--r-- | post/board/lwmon5/dsp.c | 58 | ||||
-rw-r--r-- | post/board/lwmon5/dspic.c | 109 | ||||
-rw-r--r-- | post/board/lwmon5/fpga.c | 104 | ||||
-rw-r--r-- | post/board/lwmon5/gdc.c | 94 | ||||
-rw-r--r-- | post/board/lwmon5/sysmon.c | 265 | ||||
-rw-r--r-- | post/board/lwmon5/watchdog.c | 132 |
7 files changed, 790 insertions, 0 deletions
diff --git a/post/board/lwmon5/Makefile b/post/board/lwmon5/Makefile new file mode 100644 index 0000000..5a92d1c --- /dev/null +++ b/post/board/lwmon5/Makefile @@ -0,0 +1,28 @@ +# +# (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com +# +# Developed for DENX Software Engineering GmbH +# +# 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 + +LIB = libpostlwmon5.a + +COBJS = sysmon.o watchdog.o dspic.o fpga.o dsp.o gdc.o + +include $(TOPDIR)/post/rules.mk diff --git a/post/board/lwmon5/dsp.c b/post/board/lwmon5/dsp.c new file mode 100644 index 0000000..7b53af9 --- /dev/null +++ b/post/board/lwmon5/dsp.c @@ -0,0 +1,58 @@ +/* + * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com + * + * Developed for DENX Software Engineering GmbH + * + * 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> + +#ifdef CONFIG_POST + +#include <post.h> + + +#if CONFIG_POST & CFG_POST_DSP +#include <asm/io.h> + +/* This test verifies DSP status bits in FPGA */ + +DECLARE_GLOBAL_DATA_PTR; + +#define DSP_STATUS_REG 0xC4000008 + +int dsp_post_test(int flags) +{ + uint read_value; + int ret; + + ret = 0; + read_value = in_be32((void *)DSP_STATUS_REG) & 0x3; + if (read_value != 0x3) { + post_log("\nDSP status read %08X\n", read_value); + ret = 1; + } + + return ret; +} + +#endif /* CONFIG_POST & CFG_POST_DSP */ +#endif /* CONFIG_POST */ + diff --git a/post/board/lwmon5/dspic.c b/post/board/lwmon5/dspic.c new file mode 100644 index 0000000..e8fed89 --- /dev/null +++ b/post/board/lwmon5/dspic.c @@ -0,0 +1,109 @@ +/* + * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com + * + * Developed for DENX Software Engineering GmbH + * + * 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> + +#ifdef CONFIG_POST + +/* There are two tests for dsPIC currently implemented: + * 1. dsPIC ready test. Done in board_early_init_f(). Only result verified here. + * 2. dsPIC POST result test. This test gets dsPIC POST codes and version. + */ + +#include <post.h> + +#include <i2c.h> +#include <asm/io.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define DSPIC_POST_ERROR_REG 0x800 +#define DSPIC_SYS_ERROR_REG 0x802 +#define DSPIC_VERSION_REG 0x804 + +#if CONFIG_POST & CFG_POST_BSPEC1 + +/* Verify that dsPIC ready test done early at hw init passed ok */ +int dspic_init_post_test(int flags) +{ + if (in_be32((void *)CFG_DSPIC_TEST_ADDR) & CFG_DSPIC_TEST_MASK) { + post_log("dsPIC init test failed\n"); + return 1; + } + + return 0; +} + +#endif /* CONFIG_POST & CFG_POST_BSPEC1 */ + +#if CONFIG_POST & CFG_POST_BSPEC2 +/* Read a register from the dsPIC. */ +int dspic_read(ushort reg) +{ + uchar buf[2]; + + if (i2c_read(CFG_I2C_DSPIC_IO_ADDR, reg, 2, buf, 2)) + return -1; + + return (uint)((buf[0] << 8) | buf[1]); +} + +/* Verify error codes regs, display version */ +int dspic_post_test(int flags) +{ + int data; + int ret = 0; + + post_log("\n"); + data = dspic_read(DSPIC_VERSION_REG); + if (data == -1) { + post_log("dsPIC : failed read version\n"); + ret = 1; + } else { + post_log("dsPIC version: %u.%u\n", + (data >> 8) & 0xFF, data & 0xFF); + } + + data = dspic_read(DSPIC_POST_ERROR_REG); + if (data != 0) ret = 1; + if (data == -1) { + post_log("dsPIC : failed read POST code\n"); + } else { + post_log("dsPIC POST code 0x%04X\n", data); + } + + data = dspic_read(DSPIC_SYS_ERROR_REG); + if (data != 0) ret = 1; + if (data == -1) { + post_log("dsPIC : failed read system error\n"); + } else { + post_log("dsPIC SYS-ERROR code: 0x%04X\n", data); + } + + return ret; +} + +#endif /* CONFIG_POST & CFG_POST_BSPEC2 */ +#endif /* CONFIG_POST */ + diff --git a/post/board/lwmon5/fpga.c b/post/board/lwmon5/fpga.c new file mode 100644 index 0000000..4e3f1d5 --- /dev/null +++ b/post/board/lwmon5/fpga.c @@ -0,0 +1,104 @@ +/* + * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com + * + * Developed for DENX Software Engineering GmbH + * + * 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> + +#ifdef CONFIG_POST + +/* This test performs testing of FPGA SCRATCH register, + * gets FPGA version and run get_ram_size() on FPGA memory + */ + +#include <post.h> + +#include <asm/io.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define FPGA_SCRATCH_REG 0xC4000050 +#define FPGA_VERSION_REG 0xC4000040 +#define FPGA_RAM_START 0xC4200000 +#define FPGA_RAM_END 0xC4203FFF + +#define FPGA_PWM_CTRL_REG 0xC4000020 +#define FPGA_PWM_TV_REG 0xC4000024 + +/* Turn on backlight, set brightness */ +void fpga_backlight_enable(int pwm) +{ + out_be16((void *)FPGA_PWM_CTRL_REG, 0x0701); + out_be16((void *)FPGA_PWM_TV_REG, pwm); +} + +#if CONFIG_POST & CFG_POST_BSPEC3 + +static int one_scratch_test(uint value) +{ + uint read_value; + int ret = 0; + + out_be32((void *)FPGA_SCRATCH_REG, value); + /* read other location (protect against data lines capacity) */ + ret = in_be16((void *)FPGA_VERSION_REG); + /* verify test pattern */ + read_value = in_be32((void *)FPGA_SCRATCH_REG); + if (read_value != value) { + post_log("FPGA SCRATCH test failed write %08X, read %08X\n", + value, read_value); + ret = 1; + } + + return ret; +} + +/* Verify FPGA, get version & memory size */ +int fpga_post_test(int flags) +{ + uint old_value; + ushort version; + uint read_value; + int ret = 0; + + post_log("\n"); + old_value = in_be32((void *)FPGA_SCRATCH_REG); + + if (one_scratch_test(0x55555555)) + ret = 1; + if (one_scratch_test(0xAAAAAAAA)) + ret = 1; + + out_be32((void *)FPGA_SCRATCH_REG, old_value); + + version = in_be16((void *)FPGA_VERSION_REG); + post_log("FPGA : version %u.%u\n", + (version >> 8) & 0xFF, version & 0xFF); + + read_value = get_ram_size((void *)CFG_FPGA_BASE_1, 0x4000); + post_log("FPGA RAM size: %d bytes\n", read_value); + + return ret; +} + +#endif /* CONFIG_POST & CFG_POST_BSPEC3 */ +#endif /* CONFIG_POST */ + diff --git a/post/board/lwmon5/gdc.c b/post/board/lwmon5/gdc.c new file mode 100644 index 0000000..76e5dd6 --- /dev/null +++ b/post/board/lwmon5/gdc.c @@ -0,0 +1,94 @@ +/* + * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com + * + * Developed for DENX Software Engineering GmbH + * + * 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> + +#ifdef CONFIG_POST + +/* This test attempts to verify board GDC. A scratch register tested, then + * simple memory test (get_ram_size()) run over GDC memory. + */ + +#include <post.h> + +#include <asm/io.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define GDC_SCRATCH_REG 0xC1FF8044 +#define GDC_VERSION_REG 0xC1FF8084 +#define GDC_RAM_START 0xC0000000 +#define GDC_RAM_END 0xC2000000 + +#if CONFIG_POST & CFG_POST_BSPEC4 + +static int gdc_test_reg_one(uint value) +{ + int ret = 0; + uint read_value; + + /* write test pattern */ + out_be32((void *)GDC_SCRATCH_REG, value); + /* read other location (protect against data lines capacity) */ + ret = in_be32((void *)GDC_RAM_START); + /* verify test pattern */ + read_value = in_be32((void *)GDC_SCRATCH_REG); + if (read_value != value) { + post_log("GDC SCRATCH test failed write %08X, read %08X\n", + value, read_value); + ret = 1; + } + + return ret; +} + +/* Verify GDC, get memory size */ +int gdc_post_test(int flags) +{ + uint old_value; + int ret = 0; + + post_log("\n"); + old_value = in_be32((void *)GDC_SCRATCH_REG); + + if (gdc_test_reg_one(0x55555555)) + ret = 1; + if (gdc_test_reg_one(0xAAAAAAAA)) + ret = 1; + + out_be32((void *)GDC_SCRATCH_REG, old_value); + + old_value = in_be32((void *)GDC_VERSION_REG); + post_log("GDC chip version %u.%u, year %04X\n", + (old_value >> 8) & 0xFF, old_value & 0xFF, + (old_value >> 16) & 0xFFFF); + + old_value = get_ram_size((void *)GDC_RAM_START, + GDC_RAM_END - GDC_RAM_START); + post_log("GDC RAM size: %d bytes\n", old_value); + + return ret; +} +#endif /* CONFIG_POST & CFG_POST_BSPEC4 */ +#endif /* CONFIG_POST */ + diff --git a/post/board/lwmon5/sysmon.c b/post/board/lwmon5/sysmon.c new file mode 100644 index 0000000..0eae4c1 --- /dev/null +++ b/post/board/lwmon5/sysmon.c @@ -0,0 +1,265 @@ +/* + * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com + * + * Developed for DENX Software Engineering GmbH + * + * 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 <post.h> +#include <common.h> + +#ifdef CONFIG_POST + +/* + * SYSMON test + * + * This test performs the system hardware monitoring. + * The test passes when all the following voltages and temperatures + * are within allowed ranges: + * + * Temperature -40 .. +85 C + * +5V +4.75 .. +5.25 V + * +5V standby +4.75 .. +5.25 V + * + * LCD backlight is not enabled if temperature values are not within + * allowed ranges (-30 .. + 80). The brightness of backlite can be + * controlled by setting "brightness" enviroment variable. Default value is 50% + * + * See the list of all parameters in the sysmon_table below + */ + +#include <post.h> +#include <watchdog.h> +#include <i2c.h> + +#if CONFIG_POST & CFG_POST_SYSMON + +DECLARE_GLOBAL_DATA_PTR; + +#define DEFAULT_BRIGHTNESS 50 + +/* from dspic.c */ +extern int dspic_read(ushort reg); +/* from fpga.c */ +extern void fpga_backlight_enable(int v); + +static int sysmon_temp_invalid; + +#define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off) + +typedef struct sysmon_s sysmon_t; +typedef struct sysmon_table_s sysmon_table_t; + +static void sysmon_dspic_init (sysmon_t * this); +static int sysmon_dspic_read (sysmon_t * this, uint addr); +static void sysmon_backlight_disable (sysmon_table_t * this); +static void sysmon_backlight_enable (sysmon_table_t * this); + +struct sysmon_s +{ + uchar chip; + void (*init)(sysmon_t *); + int (*read)(sysmon_t *, uint); +}; + +static sysmon_t sysmon_dspic = + {CFG_I2C_DSPIC_IO_ADDR, sysmon_dspic_init, sysmon_dspic_read}; + +static sysmon_t * sysmon_list[] = +{ + &sysmon_dspic, + NULL +}; + +struct sysmon_table_s +{ + char * name; + char * unit_name; + sysmon_t * sysmon; + void (*exec_before)(sysmon_table_t *); + void (*exec_after)(sysmon_table_t *); + + int unit_precision; + int unit_div; + int unit_min; + int unit_max; + uint val_mask; + uint val_min; + uint val_max; + int val_valid; + uint val_min_alt; + uint val_max_alt; + int val_valid_alt; + uint addr; +}; + +static sysmon_table_t sysmon_table[] = +{ + {"Temperature", " C", &sysmon_dspic, NULL, sysmon_backlight_disable, + 1, 1, -32768, 32767, 0xFFFF, 0x8000-40, 0x8000+85, 0, + 0x8000-30, 0x8000+80, 0, 0x12BC}, + + {"+ 5 V", "V", &sysmon_dspic, NULL, NULL, + 100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0, + 0x8000+4750, 0x8000+5250, 0, 0x12CA}, + + {"+ 5 V standby", "V", &sysmon_dspic, NULL, sysmon_backlight_enable, + 100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0, + 0x8000+4750, 0x8000+5250, 0, 0x12C6}, +}; +static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]); + +int sysmon_init_f (void) +{ + sysmon_t ** l; + + for (l = sysmon_list; *l; l++) + (*l)->init(*l); + + return 0; +} + +void sysmon_reloc (void) +{ + sysmon_t ** l; + sysmon_table_t * t; + + for (l = sysmon_list; *l; l++) { + RELOC(*l); + RELOC((*l)->init); + RELOC((*l)->read); + } + + for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) { + RELOC(t->exec_before); + RELOC(t->exec_after); + RELOC(t->sysmon); + } +} + +static char *sysmon_unit_value (sysmon_table_t *s, uint val) +{ + static char buf[32]; + char *p, sign; + int decimal, frac; + int unit_val; + + unit_val = + s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask; + + if (val == -1) + return "I/O ERROR"; + + if (unit_val < 0) { + sign = '-'; + unit_val = -unit_val; + } else + sign = '+'; + + p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div); + + + frac = unit_val % s->unit_div; + + frac /= (s->unit_div / s->unit_precision); + + decimal = s->unit_precision; + + if (decimal != 1) + *p++ = '.'; + for (decimal /= 10; decimal != 0; decimal /= 10) + *p++ = '0' + (frac / decimal) % 10; + strcpy(p, s->unit_name); + + return buf; +} + +static void sysmon_dspic_init (sysmon_t * this) +{ +} + +static int sysmon_dspic_read (sysmon_t * this, uint addr) +{ + int res = dspic_read(addr); + + /* To fit into the table range we should add 0x8000 */ + return (res == -1) ? -1 : (res + 0x8000); +} + +static void sysmon_backlight_disable (sysmon_table_t * this) +{ + if (!this->val_valid_alt) + sysmon_temp_invalid = 1; +} + +static void sysmon_backlight_enable (sysmon_table_t * this) +{ + char * param; + int rc; + + if (!sysmon_temp_invalid) { + param = getenv("brightness"); + rc = param ? simple_strtol(param, NULL, 10) : -1; + if (rc >= 0) + fpga_backlight_enable(rc); + else + fpga_backlight_enable(DEFAULT_BRIGHTNESS); + } +} + +int sysmon_post_test (int flags) +{ + int res = 0; + sysmon_table_t * t; + int val; + + for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) { + if (t->exec_before) + t->exec_before(t); + + val = t->sysmon->read(t->sysmon, t->addr); + if (val != -1) { + t->val_valid = val >= t->val_min && val <= t->val_max; + t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt; + } else { + t->val_valid = 0; + t->val_valid_alt = 0; + } + + if (t->exec_after) + t->exec_after(t); + + if ((!t->val_valid) || (flags & POST_MANUAL)) { + printf("%-17s = %-10s ", t->name, sysmon_unit_value(t, val)); + printf("allowed range"); + printf(" %-8s ..", sysmon_unit_value(t, t->val_min)); + printf(" %-8s", sysmon_unit_value(t, t->val_max)); + printf(" %s\n", t->val_valid ? "OK" : "FAIL"); + } + + if (!t->val_valid) + res = 1; + } + + return res; +} + +#endif /* CONFIG_POST & CFG_POST_SYSMON */ +#endif /* CONFIG_POST */ diff --git a/post/board/lwmon5/watchdog.c b/post/board/lwmon5/watchdog.c new file mode 100644 index 0000000..ad9e6f3 --- /dev/null +++ b/post/board/lwmon5/watchdog.c @@ -0,0 +1,132 @@ +/* + * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com + * + * Developed for DENX Software Engineering GmbH + * + * 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> + +/* This test verifies if the reason of last reset was an abnormal voltage + * condition, than it performs watchdog test, measuing time required to + * trigger watchdog reset. + */ + +#ifdef CONFIG_POST + +#include <post.h> + +#if CONFIG_POST & CFG_POST_WATCHDOG + +#include <watchdog.h> +#include <asm/gpio.h> +#include <asm/io.h> + +static uint watchdog_magic_read(void) +{ + return in_be32((void *)CFG_WATCHDOG_FLAGS_ADDR) & + CFG_WATCHDOG_MAGIC_MASK; +} + +static void watchdog_magic_write(uint value) +{ + out_be32((void *)CFG_WATCHDOG_FLAGS_ADDR, value | + (in_be32((void *)CFG_WATCHDOG_FLAGS_ADDR) & + ~CFG_WATCHDOG_MAGIC_MASK)); +} + +int sysmon1_post_test(int flags) +{ + if (gpio_read_in_bit(CFG_GPIO_SYSMON_STATUS)) { + /* 3.1. GPIO62 is low + * Assuming system voltage failure. + */ + post_log("Abnormal voltage detected (GPIO62)\n"); + return 1; + } + + return 0; +} + +int lwmon5_watchdog_post_test(int flags) +{ + /* On each reset scratch register 1 should be tested, + * but first test GPIO62: + */ + if (!(flags & POST_MANUAL) && sysmon1_post_test(flags)) { + /* 3.1. GPIO62 is low + * Assuming system voltage failure. + */ + /* 3.1.1. Set scratch register 1 to 0x0000xxxx */ + watchdog_magic_write(0); + /* 3.1.2. Mark test as failed due to voltage?! */ + return 1; + } + + if (watchdog_magic_read() != CFG_WATCHDOG_MAGIC) { + /* 3.2. Scratch register 1 differs from magic value 0x1248xxxx + * Assuming PowerOn + */ + int ints; + ulong base; + ulong time; + + /* 3.2.1. Set magic value to scratch register */ + watchdog_magic_write(CFG_WATCHDOG_MAGIC); + + ints = disable_interrupts (); + /* 3.2.2. strobe watchdog once */ + WATCHDOG_RESET(); + out_be32((void *)CFG_WATCHDOG_TIME_ADDR, 0); + /* 3.2.3. save time of strobe in scratch register 2 */ + base = post_time_ms (0); + + /* 3.2.4. Wait for 150 ms (enough for reset to happen) */ + while ((time = post_time_ms (base)) < 150) + out_be32((void *)CFG_WATCHDOG_TIME_ADDR, time); + if (ints) + enable_interrupts (); + + /* 3.2.5. Reset didn't happen. - Set 0x0000xxxx + * into scratch register 1 + */ + watchdog_magic_write(0); + /* 3.2.6. Mark test as failed. */ + post_log("hw watchdog time : %u ms, failed ", time); + return 2; + } else { + /* 3.3. Scratch register matches magic value 0x1248xxxx + * Assume this is watchdog-initiated reset + */ + ulong time; + /* 3.3.1. So, the test succeed, save measured time to syslog. */ + time = in_be32((void *)CFG_WATCHDOG_TIME_ADDR); + post_log("hw watchdog time : %u ms, passed ", time); + /* 3.3.2. Set scratch register 1 to 0x0000xxxx */ + watchdog_magic_write(0); + return 0; + } + return -1; +} + + +#endif /* CONFIG_POST & CFG_POST_WATCHDOG */ +#endif /* CONFIG_POST */ + |