/* memory.c: Prom routine for acquiring various bits of information * about RAM on the machine, both virtual and physical. * * Copyright (C) 1995, 2008 David S. Miller (davem@davemloft.net) * Copyright (C) 1997 Michael A. Griffith (grif@acm.org) */ #include #include #include #include #include #include static int __init prom_meminit_v0(void) { struct linux_mlist_v0 *p; int index; index = 0; for (p = *(romvec->pv_v0mem.v0_available); p; p = p->theres_more) { sp_banks[index].base_addr = (unsigned long) p->start_adr; sp_banks[index].num_bytes = p->num_bytes; index++; } return index; } static int __init prom_meminit_v2(void) { struct linux_prom_registers reg[64]; phandle node; int size, num_ents, i; node = prom_searchsiblings(prom_getchild(prom_root_node), "memory"); size = prom_getproperty(node, "available", (char *) reg, sizeof(reg)); num_ents = size / sizeof(struct linux_prom_registers); for (i = 0; i < num_ents; i++) { sp_banks[i].base_addr = reg[i].phys_addr; sp_banks[i].num_bytes = reg[i].reg_size; } return num_ents; } static int sp_banks_cmp(const void *a, const void *b) { const struct sparc_phys_banks *x = a, *y = b; if (x->base_addr > y->base_addr) return 1; if (x->base_addr < y->base_addr) return -1; return 0; } /* Initialize the memory lists based upon the prom version. */ void __init prom_meminit(void) { int i, num_ents = 0; switch (prom_vers) { case PROM_V0: num_ents = prom_meminit_v0(); break; case PROM_V2: case PROM_V3: num_ents = prom_meminit_v2(); break; default: break; } sort(sp_banks, num_ents, sizeof(struct sparc_phys_banks), sp_banks_cmp, NULL); /* Sentinel. */ sp_banks[num_ents].base_addr = 0xdeadbeef; sp_banks[num_ents].num_bytes = 0; for (i = 0; i < num_ents; i++) sp_banks[i].num_bytes &= PAGE_MASK; } l/sigutil_64.c?id=5db4992d8f040b8d8db0b86d42806e0c417f7ccf'>commitdiff

path: root/arch/sparc/kernel/sigutil_64.c

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