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Diffstat (limited to 'arch/m68k/sun3/idprom.c')
| -rw-r--r-- | arch/m68k/sun3/idprom.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/arch/m68k/sun3/idprom.c b/arch/m68k/sun3/idprom.c new file mode 100644 index 000000000..1ace5353d --- /dev/null +++ b/arch/m68k/sun3/idprom.c @@ -0,0 +1,132 @@ +// 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); +} |