^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * cmdline.c: Kernel command line creation using ARCS argc/argv.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/bug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/sgialib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #undef DEBUG_CMDLINE
^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) * A 32-bit ARC PROM pass arguments and environment as 32-bit pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * These macro take care of sign extension.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define prom_argv(index) ((char *) (long)argv[(index)])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static char *ignored[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) "ConsoleIn=",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) "ConsoleOut=",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) "SystemPartition=",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) "OSLoader=",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) "OSLoadPartition=",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) "OSLoadFilename=",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) "OSLoadOptions="
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static char *used_arc[][2] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) { "OSLoadPartition=", "root=" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) { "OSLoadOptions=", "" }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static char __init *move_firmware_args(int argc, LONG *argv, char *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) char *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int actr, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) actr = 1; /* Always ignore argv[0] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) while (actr < argc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) for(i = 0; i < ARRAY_SIZE(used_arc); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) int len = strlen(used_arc[i][0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (!strncmp(prom_argv(actr), used_arc[i][0], len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* Ok, we want it. First append the replacement... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) strcat(cp, used_arc[i][1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) cp += strlen(used_arc[i][1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* ... and now the argument */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) s = strchr(prom_argv(actr), '=');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) s++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) strcpy(cp, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) cp += strlen(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *cp++ = ' ';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) actr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) void __init prom_init_cmdline(int argc, LONG *argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) char *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int actr, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) actr = 1; /* Always ignore argv[0] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) cp = arcs_cmdline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * Move ARC variables to the beginning to make sure they can be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * overridden by later arguments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) cp = move_firmware_args(argc, argv, cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) while (actr < argc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) for (i = 0; i < ARRAY_SIZE(ignored); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int len = strlen(ignored[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (!strncmp(prom_argv(actr), ignored[i], len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) goto pic_cont;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* Ok, we want it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) strcpy(cp, prom_argv(actr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) cp += strlen(prom_argv(actr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) *cp++ = ' ';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) pic_cont:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) actr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (cp != arcs_cmdline) /* get rid of trailing space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) --cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) *cp = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #ifdef DEBUG_CMDLINE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) printk(KERN_DEBUG "prom cmdline: %s\n", arcs_cmdline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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