^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 1996-2005 Paul Mackerras.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <asm/udbg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "nonstdio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) static bool paginating, paginate_skipping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) static unsigned long paginate_lpp; /* Lines Per Page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) static unsigned long paginate_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) void xmon_start_pagination(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) paginating = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) paginate_skipping = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) paginate_pos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) void xmon_end_pagination(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) paginating = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) void xmon_set_pagination_lpp(unsigned long lpp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) paginate_lpp = lpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static int xmon_readchar(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) if (udbg_getc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) return udbg_getc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int xmon_write(const char *ptr, int nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int rv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) const char *p = ptr, *q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) const char msg[] = "[Hit a key (a:all, q:truncate, any:next page)]";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) if (nb <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (paginating && paginate_skipping)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (paginate_lpp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) while (paginating && (q = strchr(p, '\n'))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) rv += udbg_write(p, q - p + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) p = q + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) paginate_pos++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (paginate_pos >= paginate_lpp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) udbg_write(msg, strlen(msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) switch (xmon_readchar()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) case 'a':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) paginating = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) case 'q':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) paginate_skipping = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) paginate_pos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) udbg_write("\r\n", 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (paginate_skipping)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return rv + udbg_write(p, nb - (p - ptr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int xmon_putchar(int c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) char ch = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (c == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) xmon_putchar('\r');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return xmon_write(&ch, 1) == 1? c: -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static char line[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static char *lineptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static int lineleft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static int xmon_getchar(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (lineleft == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) lineptr = line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) c = xmon_readchar();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (c == -1 || c == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (c == '\r' || c == '\n') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) *lineptr++ = '\n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) xmon_putchar('\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) switch (c) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) case 0177:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) case '\b':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (lineptr > line) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) xmon_putchar('\b');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) xmon_putchar(' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) xmon_putchar('\b');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) --lineptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) case 'U' & 0x1F:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) while (lineptr > line) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) xmon_putchar('\b');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) xmon_putchar(' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) xmon_putchar('\b');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) --lineptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (lineptr >= &line[sizeof(line) - 1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) xmon_putchar('\a');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) xmon_putchar(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) *lineptr++ = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) lineleft = lineptr - line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) lineptr = line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (lineleft == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) --lineleft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return *lineptr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) char *xmon_gets(char *str, int nb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) for (p = str; p < str + nb - 1; ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) c = xmon_getchar();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (c == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (p == str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) *p++ = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (c == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) *p = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) void xmon_printf(const char *format, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static char xmon_outbuf[1024];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) int rc, n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) va_start(args, format);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) n = vsnprintf(xmon_outbuf, sizeof(xmon_outbuf), format, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) rc = xmon_write(xmon_outbuf, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (n && rc == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* No udbg hooks, fallback to printk() - dangerous */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) pr_cont("%s", xmon_outbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) void xmon_puts(const char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) xmon_write(str, strlen(str));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags