/*
 * (C) Copyright 2002
 * Wolfgang Denk, DENX Software Engineering, wd@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 <common.h>
#include <console.h>
#include <watchdog.h>
#include <post.h>

#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

#define POST_MAX_NUMBER         32

#define BOOTMODE_MAGIC  0xDEAD0000

int post_init_f (void)
{
        int res = 0;
        unsigned int i;

        for (i = 0; i < post_list_size; i++) {
                struct post_test *test = post_list + i;

                if (test->init_f && test->init_f()) {
                        res = -1;
                }
        }

        gd->post_init_f_time = post_time_ms(0);
        if (!gd->post_init_f_time)
        {
                printf("post/post.c: post_time_ms seems not to be implemented\n");
        }

        return res;
}

void post_bootmode_init (void)
{
        int bootmode = post_bootmode_get (0);
        int newword;

        if (post_hotkeys_pressed() && !(bootmode & POST_POWERTEST)) {
                newword = BOOTMODE_MAGIC | POST_SLOWTEST;
        } else if (bootmode == 0) {
                newword = BOOTMODE_MAGIC | POST_POWERON;
        } else if (bootmode == POST_POWERON || bootmode == POST_SLOWTEST) {
                newword = BOOTMODE_MAGIC | POST_NORMAL;
        } else {
                /* Use old value */
                newword = post_word_load () & ~POST_COLDBOOT;
        }

        if (bootmode == 0)
        {
                /* We are booting after power-on */
                newword |= POST_COLDBOOT;
        }

        post_word_store (newword);

        /* Reset activity record */
        gd->post_log_word = 0;
}

int post_bootmode_get (unsigned int *last_test)
{
        unsigned long word = post_word_load ();
        int bootmode;

        if ((word & 0xFFFF0000) != BOOTMODE_MAGIC) {
                return 0;
        }

        bootmode = word & 0x7F;

        if (last_test && (bootmode & POST_POWERTEST)) {
                *last_test = (word >> 8) & 0xFF;
        }

        return bootmode;
}

/* POST tests run before relocation only mark status bits .... */
static void post_log_mark_start ( unsigned long testid )
{
        gd->post_log_word |= (testid)<<16;
}

static void post_log_mark_succ ( unsigned long testid )
{
        gd->post_log_word |= testid;
}

/* ... and the messages are output once we are relocated */
void post_output_backlog ( void )
{
        int j;

        for (j = 0; j < post_list_size; j++) {
                if (gd->post_log_word & (post_list[j].testid<<16)) {
                        post_log ("POST %s ", post_list[j].cmd);
                        if (gd->post_log_word & post_list[j].testid)
                                post_log ("PASSED\n");
                        else {
                                post_log ("FAILED\n");
                                show_boot_progress (-31);
                        }
                }
        }
}

static void post_bootmode_test_on (unsigned int last_test)
{
        unsigned long word = post_word_load ();

        word |= POST_POWERTEST;

        word |= (last_test & 0xFF) << 8;

        post_word_store (word);
}

static void post_bootmode_test_off (void)
{
        unsigned long word = post_word_load ();

        word &= ~POST_POWERTEST;

        post_word_store (word);
}

static void post_get_flags (int *test_flags)
{
        int  flag[] = {  POST_POWERON,   POST_NORMAL,   POST_SLOWTEST,
                         POST_CRITICAL };
        char *var[] = { "post_poweron", "post_normal", "post_slowtest",
                        "post_critical" };
        int varnum = sizeof (var) / sizeof (var[0]);
        char list[128];                 /* long enough for POST list */
        char *name;
        char *s;
        int last;
        int i, j;

        for (j = 0; j < post_list_size; j++) {
                test_flags[j] = post_list[j].flags;
        }

        for (i = 0; i < varnum; i++) {
                if (getenv_r (var[i], list, sizeof (list)) <= 0)
                        continue;

                for (j = 0; j < post_list_size; j++) {
                        test_flags[j] &= ~flag[i];
                }

                last = 0;
                name = list;
                while (!last) {
                        while (*name && *name == ' ')
                                name++;
                        if (*name == 0)
                                break;
                        s = name + 1;
                        while (*s && *s != ' ')
                                s++;
                        if (*s == 0)
                                last = 1;
                        else
                                *s = 0;

                        for (j = 0; j < post_list_size; j++) {
                                if (strcmp (post_list[j].cmd, name) == 0) {
                                        test_flags[j] |= flag[i];
                                        break;
                                }
                        }

                        if (j == post_list_size) {
                                printf ("No such test: %s\n", name);
                        }

                        name = s + 1;
                }
        }

        for (j = 0; j < post_list_size; j++) {
                if (test_flags[j] & POST_POWERON) {
                        test_flags[j] |= POST_SLOWTEST;
                }
        }
}

static int post_run_single (struct post_test *test,
                                int test_flags, int flags, unsigned int i)
{
        if ((flags & test_flags & POST_ALWAYS) &&
                (flags & test_flags & POST_MEM)) {
                WATCHDOG_RESET ();

                if (!(flags & POST_REBOOT)) {
                        if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
                                post_bootmode_test_on (
                                        (gd->flags & GD_FLG_POSTFAIL) ?
                                                POST_FAIL_SAVE | i : i);
                        }

                        if (test_flags & POST_PREREL)
                                post_log_mark_start ( test->testid );
                        else
                        post_log ("POST %s ", test->cmd);
                }

                if (test_flags & POST_PREREL) {
                        if ((*test->test) (flags) == 0)
                                post_log_mark_succ ( test->testid );
                        else {
                                if (test_flags & POST_CRITICAL)
                                        gd->flags |= GD_FLG_POSTFAIL;
                                if (test_flags & POST_STOP)
                                        gd->flags |= GD_FLG_POSTSTOP;
                        }
                } else {
                if ((*test->test) (flags) != 0) {
                        post_log ("FAILED\n");
                        show_boot_progress (-32);
                        if (test_flags & POST_CRITICAL)
                                gd->flags |= GD_FLG_POSTFAIL;
                        if (test_flags & POST_STOP)
                                gd->flags |= GD_FLG_POSTSTOP;
                }
                else
                        post_log ("PASSED\n");
                }

                if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
                        post_bootmode_test_off ();
                }

                return 0;
        } else {
                return -1;
        }
}

int post_run (char *name, int flags)
{
        unsigned int i;
        int test_flags[POST_MAX_NUMBER];

        post_get_flags (test_flags);

        if (name == NULL) {
                unsigned int last;

                if (gd->flags & GD_FLG_POSTSTOP)
                        return 0;

                if (post_bootmode_get (&last) & POST_POWERTEST) {
                        if (last & POST_FAIL_SAVE) {
                                last &= ~POST_FAIL_SAVE;
                                gd->flags |= GD_FLG_POSTFAIL;
                        }
                        if (last < post_list_size &&
                                (flags & test_flags[last] & POST_ALWAYS) &&
                                (flags & test_flags[last] & POST_MEM)) {

                                post_run_single (post_list + last,
                                                 test_flags[last],
                                                 flags | POST_REBOOT, last);

                                for (i = last + 1; i < post_list_size; i++) {
                                        if (gd->flags & GD_FLG_POSTSTOP)
                                                break;
                                        post_run_single (post_list + i,
                                                         test_flags[i],
                                                         flags, i);
                                }
                        }
                } else {
                        for (i = 0; i < post_list_size; i++) {
                                if (gd->flags & GD_FLG_POSTSTOP)
                                        break;
                                post_run_single (post_list + i,
                                                 test_flags[i],
                                                 flags, i);
                        }
                }

                return 0;
        } else {
                for (i = 0; i < post_list_size; i++) {
                        if (strcmp (post_list[i].cmd, name) == 0)
                                break;
                }

                if (i < post_list_size) {
                        WATCHDOG_RESET();
                        return post_run_single (post_list + i,
                                                test_flags[i],
                                                flags, i);
                } else {
                        return -1;
                }
        }
}

static int post_info_single (struct post_test *test, int full)
{
        if (test->flags & POST_MANUAL) {
                if (full)
                        printf ("%s - %s\n"
                                "  %s\n", test->cmd, test->name, test->desc);
                else
                        printf ("  %-15s - %s\n", test->cmd, test->name);

                return 0;
        } else {
                return -1;
        }
}

int post_info (char *name)
{
        unsigned int i;

        if (name == NULL) {
                for (i = 0; i < post_list_size; i++) {
                        post_info_single (post_list + i, 0);
                }

                return 0;
        } else {
                for (i = 0; i < post_list_size; i++) {
                        if (strcmp (post_list[i].cmd, name) == 0)
                                break;
                }

                if (i < post_list_size) {
                        return post_info_single (post_list + i, 1);
                } else {
                        return -1;
                }
        }
}

int post_log (char *format, ...)
{
        va_list args;
        uint i;
        char printbuffer[CONFIG_SYS_PBSIZE];

        va_start (args, format);

        /* For this to work, printbuffer must be larger than
         * anything we ever want to print.
         */
        i = vsprintf (printbuffer, format, args);
        va_end (args);

#ifdef CONFIG_LOGBUFFER
        /* Send to the logbuffer */
        logbuff_log (printbuffer);
#else
        /* Send to the stdout file */
        puts (printbuffer);
#endif

        return 0;
}

void post_reloc (void)
{
        unsigned int i;

        /*
         * We have to relocate the test table manually
         */
        for (i = 0; i < post_list_size; i++) {
                ulong addr;
                struct post_test *test = post_list + i;

                if (test->name) {
                        addr = (ulong) (test->name) + gd->reloc_off;
                        test->name = (char *) addr;
                }

                if (test->cmd) {
                        addr = (ulong) (test->cmd) + gd->reloc_off;
                        test->cmd = (char *) addr;
                }

                if (test->desc) {
                        addr = (ulong) (test->desc) + gd->reloc_off;
                        test->desc = (char *) addr;
                }

                if (test->test) {
                        addr = (ulong) (test->test) + gd->reloc_off;
                        test->test = (int (*)(int flags)) addr;
                }

                if (test->init_f) {
                        addr = (ulong) (test->init_f) + gd->reloc_off;
                        test->init_f = (int (*)(void)) addr;
                }

                if (test->reloc) {
                        addr = (ulong) (test->reloc) + gd->reloc_off;
                        test->reloc = (void (*)(void)) addr;

                        test->reloc();
                }
        }
}


/*
 * Some tests (e.g. SYSMON) need the time when post_init_f started,
 * but we cannot use get_timer() at this point.
 *
 * On PowerPC we implement it using the timebase register.
 */
unsigned long post_time_ms (unsigned long base)
{
#ifdef CONFIG_PPC
        return (unsigned long)(get_ticks () / (get_tbclk () / CONFIG_SYS_HZ)) - base;
#else
#warning "Not implemented yet"
        return 0; /* Not implemented yet */
#endif
}