// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2000-2002
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 */

#include <common.h>
#include <console.h>
#include <div64.h>
#include <inttypes.h>
#include <version.h>
#include <linux/ctype.h>
#include <asm/io.h>

char *display_options_get_banner_priv(bool newlines, const char *build_tag,
                                      char *buf, int size)
{
        int len;

        len = snprintf(buf, size, "%s%s", newlines ? "\n\n" : "",
                       version_string);
        if (build_tag && len < size)
                len += snprintf(buf + len, size - len, ", Build: %s",
                                build_tag);
        if (len > size - 3)
                len = size - 3;
        strcpy(buf + len, "\n\n");

        return buf;
}

#ifndef BUILD_TAG
#define BUILD_TAG NULL
#endif

char *display_options_get_banner(bool newlines, char *buf, int size)
{
        return display_options_get_banner_priv(newlines, BUILD_TAG, buf, size);
}

int display_options(void)
{
        char buf[DISPLAY_OPTIONS_BANNER_LENGTH];

        display_options_get_banner(true, buf, sizeof(buf));
        printf("%s", buf);

        return 0;
}

void print_freq(uint64_t freq, const char *s)
{
        unsigned long m = 0;
        uint32_t f;
        static const char names[] = {'G', 'M', 'K'};
        unsigned long d = 1e9;
        char c = 0;
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(names); i++, d /= 1000) {
                if (freq >= d) {
                        c = names[i];
                        break;
                }
        }

        if (!c) {
                printf("%" PRIu64 " Hz%s", freq, s);
                return;
        }

        f = do_div(freq, d);

        /* If there's a remainder, show the first few digits */
        if (f) {
                m = f;
                while (m > 1000)
                        m /= 10;
                while (m && !(m % 10))
                        m /= 10;
                if (m >= 100)
                        m = (m / 10) + (m % 100 >= 50);
        }

        printf("%lu", (unsigned long) freq);
        if (m)
                printf(".%ld", m);
        printf(" %cHz%s", c, s);
}

void print_size(uint64_t size, const char *s)
{
        unsigned long m = 0, n;
        uint64_t f;
        static const char names[] = {'E', 'P', 'T', 'G', 'M', 'K'};
        unsigned long d = 10 * ARRAY_SIZE(names);
        char c = 0;
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(names); i++, d -= 10) {
                if (size >> d) {
                        c = names[i];
                        break;
                }
        }

        if (!c) {
                printf("%" PRIu64 " Bytes%s", size, s);
                return;
        }

        n = size >> d;
        f = size & ((1ULL << d) - 1);

        /* If there's a remainder, deal with it */
        if (f) {
                m = (10ULL * f + (1ULL << (d - 1))) >> d;

                if (m >= 10) {
                        m -= 10;
                        n += 1;
                }
        }

        printf ("%lu", n);
        if (m) {
                printf (".%ld", m);
        }
        printf (" %ciB%s", c, s);
}

#define MAX_LINE_LENGTH_BYTES (64)
#define DEFAULT_LINE_LENGTH_BYTES (16)
int print_buffer(ulong addr, const void *data, uint width, uint count,
                 uint linelen)
{
        /* linebuf as a union causes proper alignment */
        union linebuf {
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
                uint64_t uq[MAX_LINE_LENGTH_BYTES/sizeof(uint64_t) + 1];
#endif
                uint32_t ui[MAX_LINE_LENGTH_BYTES/sizeof(uint32_t) + 1];
                uint16_t us[MAX_LINE_LENGTH_BYTES/sizeof(uint16_t) + 1];
                uint8_t  uc[MAX_LINE_LENGTH_BYTES/sizeof(uint8_t) + 1];
        } lb;
        int i;
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
        uint64_t __maybe_unused x;
#else
        uint32_t __maybe_unused x;
#endif

        if (linelen*width > MAX_LINE_LENGTH_BYTES)
                linelen = MAX_LINE_LENGTH_BYTES / width;
        if (linelen < 1)
                linelen = DEFAULT_LINE_LENGTH_BYTES / width;

        while (count) {
                uint thislinelen = linelen;
                printf("%08lx:", addr);

                /* check for overflow condition */
                if (count < thislinelen)
                        thislinelen = count;

                /* Copy from memory into linebuf and print hex values */
                for (i = 0; i < thislinelen; i++) {
                        if (width == 4)
                                x = lb.ui[i] = *(volatile uint32_t *)data;
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
                        else if (width == 8)
                                x = lb.uq[i] = *(volatile uint64_t *)data;
#endif
                        else if (width == 2)
                                x = lb.us[i] = *(volatile uint16_t *)data;
                        else
                                x = lb.uc[i] = *(volatile uint8_t *)data;
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
                        printf(" %0*llx", width * 2, (long long)x);
#else
                        printf(" %0*x", width * 2, x);
#endif
                        data += width;
                }

                while (thislinelen < linelen) {
                        /* fill line with whitespace for nice ASCII print */
                        for (i=0; i<width*2+1; i++)
                                puts(" ");
                        linelen--;
                }

                /* Print data in ASCII characters */
                for (i = 0; i < thislinelen * width; i++) {
                        if (!isprint(lb.uc[i]) || lb.uc[i] >= 0x80)
                                lb.uc[i] = '.';
                }
                lb.uc[i] = '\0';
                printf("    %s\n", lb.uc);

                /* update references */
                addr += thislinelen * width;
                count -= thislinelen;

                if (ctrlc())
                        return -1;
        }

        return 0;
}