/* * Support for MicroBlaze PVR (processor version register) * * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> * Copyright (C) 2007-2009 PetaLogix * Copyright (C) 2007 John Williams <john.williams@petalogix.com> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include <linux/init.h> #include <linux/string.h> #include <asm/pvr.h> #include <asm/cpuinfo.h> /* * Helper macro to map between fields in our struct cpuinfo, and * the PVR macros in pvr.h. */ #define CI(c, p) { ci->c = PVR_##p(pvr); } #define err_printk(x) \ early_printk("ERROR: Microblaze " x " - different for PVR and DTS\n"); void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu) { struct pvr_s pvr; int temp; /* for saving temp value */ get_pvr(&pvr); CI(ver_code, VERSION); if (!ci->ver_code) { printk(KERN_ERR "ERROR: MB has broken PVR regs " "-> use DTS setting\n"); return; } temp = PVR_USE_BARREL(pvr) | PVR_USE_MSR_INSTR(pvr) |\ PVR_USE_PCMP_INSTR(pvr) | PVR_USE_DIV(pvr); if (ci->use_instr != temp) err_printk("BARREL, MSR, PCMP or DIV"); ci->use_instr = temp; temp = PVR_USE_HW_MUL(pvr) | PVR_USE_MUL64(pvr); if (ci->use_mult != temp) err_printk("HW_MUL"); ci->use_mult = temp; temp = PVR_USE_FPU(pvr) | PVR_USE_FPU2(pvr); if (ci->use_fpu != temp) err_printk("HW_FPU"); ci->use_fpu = temp; ci->use_exc = PVR_OPCODE_0x0_ILLEGAL(pvr) |\ PVR_UNALIGNED_EXCEPTION(pvr) |\ PVR_ILL_OPCODE_EXCEPTION(pvr) |\ PVR_IOPB_BUS_EXCEPTION(pvr) |\ PVR_DOPB_BUS_EXCEPTION(pvr) |\ PVR_DIV_ZERO_EXCEPTION(pvr) |\ PVR_FPU_EXCEPTION(pvr) |\ PVR_FSL_EXCEPTION(pvr); CI(pvr_user1, USER1); CI(pvr_user2, USER2); CI(mmu, USE_MMU); CI(use_icache, USE_ICACHE); CI(icache_tagbits, ICACHE_ADDR_TAG_BITS); CI(icache_write, ICACHE_ALLOW_WR); CI(icache_line, ICACHE_LINE_LEN); CI(icache_size, ICACHE_BYTE_SIZE); CI(icache_base, ICACHE_BASEADDR); CI(icache_high, ICACHE_HIGHADDR); CI(use_dcache, USE_DCACHE); CI(dcache_tagbits, DCACHE_ADDR_TAG_BITS); CI(dcache_write, DCACHE_ALLOW_WR); CI(dcache_line, DCACHE_LINE_LEN); CI(dcache_size, DCACHE_BYTE_SIZE); CI(dcache_base, DCACHE_BASEADDR); CI(dcache_high, DCACHE_HIGHADDR); CI(use_dopb, D_OPB); CI(use_iopb, I_OPB); CI(use_dlmb, D_LMB); CI(use_ilmb, I_LMB); CI(num_fsl, FSL_LINKS); CI(irq_edge, INTERRUPT_IS_EDGE); CI(irq_positive, EDGE_IS_POSITIVE); CI(area_optimised, AREA_OPTIMISED); CI(hw_debug, DEBUG_ENABLED); CI(num_pc_brk, NUMBER_OF_PC_BRK); CI(num_rd_brk, NUMBER_OF_RD_ADDR_BRK); CI(num_wr_brk, NUMBER_OF_WR_ADDR_BRK); CI(fpga_family_code, TARGET_FAMILY); /* take timebase-frequency from DTS */ ci->cpu_clock_freq = fcpu(cpu, "timebase-frequency"); }