^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) * idprom.c: Routines to load the idprom into kernel addresses and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * interpret the data contained within.
^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/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/types.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/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^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/idprom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct idprom *idprom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) EXPORT_SYMBOL(idprom);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static struct idprom idprom_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #ifdef CONFIG_SPARC32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/machines.h> /* Fun with Sun released architectures. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /* Here is the master table of Sun machines which use some implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * of the Sparc CPU and have a meaningful IDPROM machtype value that we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * know about. See asm-sparc/machines.h for empirical constants.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static struct Sun_Machine_Models Sun_Machines[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /* First, Leon */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) { .name = "Leon3 System-on-a-Chip", .id_machtype = (M_LEON | M_LEON3_SOC) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* Finally, early Sun4m's */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) { .name = "Sun4m SparcSystem600", .id_machtype = (SM_SUN4M | SM_4M_SS60) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) { .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) { .name = "Sun4m SparcStation5", .id_machtype = (SM_SUN4M | SM_4M_SS40) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) { .name = "Sun4M OBP based system", .id_machtype = (SM_SUN4M_OBP | 0x0) } };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static void __init display_system_type(unsigned char machtype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) char sysname[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) register int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) for (i = 0; i < ARRAY_SIZE(Sun_Machines); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (Sun_Machines[i].id_machtype == machtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (machtype != (SM_SUN4M_OBP | 0x00) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) prom_getproperty(prom_root_node, "banner-name",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) sysname, sizeof(sysname)) <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) printk(KERN_WARNING "TYPE: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) Sun_Machines[i].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) printk(KERN_WARNING "TYPE: %s\n", sysname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static void __init display_system_type(unsigned char machtype)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) unsigned char *arch_get_platform_mac_address(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return idprom->id_ethaddr;
^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) /* Calculate the IDPROM checksum (xor of the data bytes). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) unsigned char cksum, i, *ptr = (unsigned char *)idprom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) for (i = cksum = 0; i <= 0x0E; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) cksum ^= *ptr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return cksum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* Create a local IDPROM copy, verify integrity, and display information. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) void __init idprom_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) idprom = &idprom_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (idprom->id_format != 0x01)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) prom_printf("IDPROM: Warning, unknown format type!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (idprom->id_cksum != calc_idprom_cksum(idprom))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) idprom->id_cksum, calc_idprom_cksum(idprom));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) display_system_type(idprom->id_machtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) printk(KERN_WARNING "Ethernet address: %pM\n", idprom->id_ethaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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