2 * Support for MicroBlaze PVR (processor version register)
4 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
5 * Copyright (C) 2007-2009 PetaLogix
6 * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
13 #include <linux/init.h>
14 #include <linux/string.h>
16 #include <asm/cpuinfo.h>
19 * Helper macro to map between fields in our struct cpuinfo, and
20 * the PVR macros in pvr.h.
23 #define CI(c, p) { ci->c = PVR_##p(pvr); }
24 #define err_printk(x) \
25 early_printk("ERROR: Microblaze " x " - different for PVR and DTS\n");
27 void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
30 int temp; /* for saving temp value */
33 temp = PVR_USE_BARREL(pvr) | PVR_USE_MSR_INSTR(pvr) |\
34 PVR_USE_PCMP_INSTR(pvr) | PVR_USE_DIV(pvr);
35 if (ci->use_instr != temp)
36 err_printk("BARREL, MSR, PCMP or DIV");
39 temp = PVR_USE_HW_MUL(pvr) | PVR_USE_MUL64(pvr);
40 if (ci->use_mult != temp)
44 temp = PVR_USE_FPU(pvr) | PVR_USE_FPU2(pvr);
45 if (ci->use_fpu != temp)
49 ci->use_exc = PVR_OPCODE_0x0_ILLEGAL(pvr) |\
50 PVR_UNALIGNED_EXCEPTION(pvr) |\
51 PVR_ILL_OPCODE_EXCEPTION(pvr) |\
52 PVR_IOPB_BUS_EXCEPTION(pvr) |\
53 PVR_DOPB_BUS_EXCEPTION(pvr) |\
54 PVR_DIV_ZERO_EXCEPTION(pvr) |\
55 PVR_FPU_EXCEPTION(pvr) |\
56 PVR_FSL_EXCEPTION(pvr);
63 CI(ver_code, VERSION);
65 CI(use_icache, USE_ICACHE);
66 CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);
67 CI(icache_write, ICACHE_ALLOW_WR);
68 CI(icache_line, ICACHE_LINE_LEN);
69 CI(icache_size, ICACHE_BYTE_SIZE);
70 CI(icache_base, ICACHE_BASEADDR);
71 CI(icache_high, ICACHE_HIGHADDR);
73 CI(use_dcache, USE_DCACHE);
74 CI(dcache_tagbits, DCACHE_ADDR_TAG_BITS);
75 CI(dcache_write, DCACHE_ALLOW_WR);
76 CI(dcache_line, DCACHE_LINE_LEN);
77 CI(dcache_size, DCACHE_BYTE_SIZE);
78 CI(dcache_base, DCACHE_BASEADDR);
79 CI(dcache_high, DCACHE_HIGHADDR);
85 CI(num_fsl, FSL_LINKS);
87 CI(irq_edge, INTERRUPT_IS_EDGE);
88 CI(irq_positive, EDGE_IS_POSITIVE);
90 CI(area_optimised, AREA_OPTIMISED);
92 CI(hw_debug, DEBUG_ENABLED);
93 CI(num_pc_brk, NUMBER_OF_PC_BRK);
94 CI(num_rd_brk, NUMBER_OF_RD_ADDR_BRK);
95 CI(num_wr_brk, NUMBER_OF_WR_ADDR_BRK);
97 CI(fpga_family_code, TARGET_FAMILY);
99 /* take timebase-frequency from DTS */
100 ci->cpu_clock_freq = fcpu(cpu, "timebase-frequency");