^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * misc.c: Miscellaneous prom functions that don't belong
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * anywhere else.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/sun3-head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/idprom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/openprom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/oplib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/movs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* Reset and reboot the machine with the command 'bcommand'. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) prom_reboot(char *bcommand)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) (*(romvec->pv_reboot))(bcommand);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* Drop into the prom, with the chance to continue with the 'go'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * prom command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) prom_cmdline(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^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) /* Drop into the prom, but completely terminate the program.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * No chance of continuing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) prom_halt(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) again:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) (*(romvec->pv_halt))();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) goto again; /* PROM is out to get me -DaveM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) typedef void (*sfunc_t)(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* Get the idprom and stuff it into buffer 'idbuf'. Returns the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * format type. 'num_bytes' is the number of bytes that your idbuf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * has space for. Returns 0xff on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned char
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) prom_get_idprom(char *idbuf, int num_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) int i, oldsfc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) GET_SFC(oldsfc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) SET_SFC(FC_CONTROL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) for(i=0;i<num_bytes; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* There is a problem with the GET_CONTROL_BYTE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) macro; defining the extra variable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) gets around it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) int c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) GET_CONTROL_BYTE(SUN3_IDPROM_BASE + i, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) idbuf[i] = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) SET_SFC(oldsfc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return idbuf[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* Get the major prom version number. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) prom_version(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return romvec->pv_romvers;
^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) /* Get the prom plugin-revision. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) prom_getrev(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return prom_rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* Get the prom firmware print revision. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) prom_getprev(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return prom_prev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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