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-rw-r--r--arch/m68k/sun3/idprom.c132
1 files changed, 132 insertions, 0 deletions
diff --git a/arch/m68k/sun3/idprom.c b/arch/m68k/sun3/idprom.c
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+++ b/arch/m68k/sun3/idprom.c
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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * idprom.c: Routines to load the idprom into kernel addresses and
+ * interpret the data contained within.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Sun3/3x models added by David Monro (davidm@psrg.cs.usyd.edu.au)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <asm/oplib.h>
+#include <asm/idprom.h>
+#include <asm/machines.h> /* Fun with Sun released architectures. */
+
+struct idprom *idprom;
+EXPORT_SYMBOL(idprom);
+
+static struct idprom idprom_buffer;
+
+/* Here is the master table of Sun machines which use some implementation
+ * of the Sparc CPU and have a meaningful IDPROM machtype value that we
+ * know about. See asm-sparc/machines.h for empirical constants.
+ */
+static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
+/* First, Sun3's */
+ { .name = "Sun 3/160 Series", .id_machtype = (SM_SUN3 | SM_3_160) },
+ { .name = "Sun 3/50", .id_machtype = (SM_SUN3 | SM_3_50) },
+ { .name = "Sun 3/260 Series", .id_machtype = (SM_SUN3 | SM_3_260) },
+ { .name = "Sun 3/110 Series", .id_machtype = (SM_SUN3 | SM_3_110) },
+ { .name = "Sun 3/60", .id_machtype = (SM_SUN3 | SM_3_60) },
+ { .name = "Sun 3/E", .id_machtype = (SM_SUN3 | SM_3_E) },
+/* Now, Sun3x's */
+ { .name = "Sun 3/460 Series", .id_machtype = (SM_SUN3X | SM_3_460) },
+ { .name = "Sun 3/80", .id_machtype = (SM_SUN3X | SM_3_80) },
+/* Then, Sun4's */
+// { .name = "Sun 4/100 Series", .id_machtype = (SM_SUN4 | SM_4_110) },
+// { .name = "Sun 4/200 Series", .id_machtype = (SM_SUN4 | SM_4_260) },
+// { .name = "Sun 4/300 Series", .id_machtype = (SM_SUN4 | SM_4_330) },
+// { .name = "Sun 4/400 Series", .id_machtype = (SM_SUN4 | SM_4_470) },
+/* And now, Sun4c's */
+// { .name = "Sun4c SparcStation 1", .id_machtype = (SM_SUN4C | SM_4C_SS1) },
+// { .name = "Sun4c SparcStation IPC", .id_machtype = (SM_SUN4C | SM_4C_IPC) },
+// { .name = "Sun4c SparcStation 1+", .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) },
+// { .name = "Sun4c SparcStation SLC", .id_machtype = (SM_SUN4C | SM_4C_SLC) },
+// { .name = "Sun4c SparcStation 2", .id_machtype = (SM_SUN4C | SM_4C_SS2) },
+// { .name = "Sun4c SparcStation ELC", .id_machtype = (SM_SUN4C | SM_4C_ELC) },
+// { .name = "Sun4c SparcStation IPX", .id_machtype = (SM_SUN4C | SM_4C_IPX) },
+/* Finally, early Sun4m's */
+// { .name = "Sun4m SparcSystem600", .id_machtype = (SM_SUN4M | SM_4M_SS60) },
+// { .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) },
+// { .name = "Sun4m SparcStation5", .id_machtype = (SM_SUN4M | SM_4M_SS40) },
+/* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
+// { .name = "Sun4M OBP based system", .id_machtype = (SM_SUN4M_OBP | 0x0) }
+};
+
+static void __init display_system_type(unsigned char machtype)
+{
+ register int i;
+
+ for (i = 0; i < NUM_SUN_MACHINES; i++) {
+ if(Sun_Machines[i].id_machtype == machtype) {
+ if (machtype != (SM_SUN4M_OBP | 0x00))
+ pr_info("TYPE: %s\n", Sun_Machines[i].name);
+ else {
+#if 0
+ char sysname[128];
+
+ prom_getproperty(prom_root_node, "banner-name",
+ sysname, sizeof(sysname));
+ pr_info("TYPE: %s\n", sysname);
+#endif
+ }
+ return;
+ }
+ }
+
+ prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype);
+ prom_halt();
+}
+
+void sun3_get_model(unsigned char* model)
+{
+ register int i;
+
+ for (i = 0; i < NUM_SUN_MACHINES; i++) {
+ if(Sun_Machines[i].id_machtype == idprom->id_machtype) {
+ strcpy(model, Sun_Machines[i].name);
+ return;
+ }
+ }
+}
+
+
+
+/* Calculate the IDPROM checksum (xor of the data bytes). */
+static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
+{
+ unsigned char cksum, i, *ptr = (unsigned char *)idprom;
+
+ for (i = cksum = 0; i <= 0x0E; i++)
+ cksum ^= *ptr++;
+
+ return cksum;
+}
+
+/* Create a local IDPROM copy, verify integrity, and display information. */
+void __init idprom_init(void)
+{
+ prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
+
+ idprom = &idprom_buffer;
+
+ if (idprom->id_format != 0x01) {
+ prom_printf("IDPROM: Unknown format type!\n");
+ prom_halt();
+ }
+
+ if (idprom->id_cksum != calc_idprom_cksum(idprom)) {
+ prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n",
+ idprom->id_cksum, calc_idprom_cksum(idprom));
+ prom_halt();
+ }
+
+ display_system_type(idprom->id_machtype);
+
+ pr_info("Ethernet address: %pM\n", idprom->id_ethaddr);
+}