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 CI(ver_code, VERSION);
35 printk(KERN_ERR "ERROR: MB has broken PVR regs "
36 "-> use DTS setting\n");
40 temp = PVR_USE_BARREL(pvr) | PVR_USE_MSR_INSTR(pvr) |\
41 PVR_USE_PCMP_INSTR(pvr) | PVR_USE_DIV(pvr);
42 if (ci->use_instr != temp)
43 err_printk("BARREL, MSR, PCMP or DIV");
46 temp = PVR_USE_HW_MUL(pvr) | PVR_USE_MUL64(pvr);
47 if (ci->use_mult != temp)
51 temp = PVR_USE_FPU(pvr) | PVR_USE_FPU2(pvr);
52 if (ci->use_fpu != temp)
56 ci->use_exc = PVR_OPCODE_0x0_ILLEGAL(pvr) |\
57 PVR_UNALIGNED_EXCEPTION(pvr) |\
58 PVR_ILL_OPCODE_EXCEPTION(pvr) |\
59 PVR_IOPB_BUS_EXCEPTION(pvr) |\
60 PVR_DOPB_BUS_EXCEPTION(pvr) |\
61 PVR_DIV_ZERO_EXCEPTION(pvr) |\
62 PVR_FPU_EXCEPTION(pvr) |\
63 PVR_FSL_EXCEPTION(pvr);
70 CI(use_icache, USE_ICACHE);
71 CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);
72 CI(icache_write, ICACHE_ALLOW_WR);
73 CI(icache_line, ICACHE_LINE_LEN);
74 CI(icache_size, ICACHE_BYTE_SIZE);
75 CI(icache_base, ICACHE_BASEADDR);
76 CI(icache_high, ICACHE_HIGHADDR);
78 CI(use_dcache, USE_DCACHE);
79 CI(dcache_tagbits, DCACHE_ADDR_TAG_BITS);
80 CI(dcache_write, DCACHE_ALLOW_WR);
81 CI(dcache_line, DCACHE_LINE_LEN);
82 CI(dcache_size, DCACHE_BYTE_SIZE);
83 CI(dcache_base, DCACHE_BASEADDR);
84 CI(dcache_high, DCACHE_HIGHADDR);
90 CI(num_fsl, FSL_LINKS);
92 CI(irq_edge, INTERRUPT_IS_EDGE);
93 CI(irq_positive, EDGE_IS_POSITIVE);
95 CI(area_optimised, AREA_OPTIMISED);
97 CI(hw_debug, DEBUG_ENABLED);
98 CI(num_pc_brk, NUMBER_OF_PC_BRK);
99 CI(num_rd_brk, NUMBER_OF_RD_ADDR_BRK);
100 CI(num_wr_brk, NUMBER_OF_WR_ADDR_BRK);
102 CI(fpga_family_code, TARGET_FAMILY);
104 /* take timebase-frequency from DTS */
105 ci->cpu_clock_freq = fcpu(cpu, "timebase-frequency");