02b08045a0
Microblaze little-endian toolchain exports __MICROBLAZEEL__ which is used in the kernel to identify little/big endian. The most of the changes are in loading values from DTB which is always big endian. Little endian platforms are based on new AXI bus which has impact to early uartlite initialization. Signed-off-by: Michal Simek <monstr@monstr.eu>
106 lines
2.1 KiB
C
106 lines
2.1 KiB
C
/*
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* Generic support for queying CPU info
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*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2007-2009 PetaLogix
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* Copyright (C) 2007 John Williams <jwilliams@itee.uq.edu.au>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*/
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#ifndef _ASM_MICROBLAZE_CPUINFO_H
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#define _ASM_MICROBLAZE_CPUINFO_H
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#include <asm/prom.h>
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/* CPU Version and FPGA Family code conversion table type */
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struct cpu_ver_key {
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const char *s;
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const unsigned k;
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};
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extern const struct cpu_ver_key cpu_ver_lookup[];
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struct family_string_key {
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const char *s;
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const unsigned k;
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};
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extern const struct family_string_key family_string_lookup[];
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struct cpuinfo {
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/* Core CPU configuration */
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u32 use_instr;
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u32 use_mult;
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u32 use_fpu;
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u32 use_exc;
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u32 ver_code;
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u32 mmu;
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u32 endian;
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/* CPU caches */
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u32 use_icache;
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u32 icache_tagbits;
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u32 icache_write;
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u32 icache_line_length;
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u32 icache_size;
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unsigned long icache_base;
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unsigned long icache_high;
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u32 use_dcache;
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u32 dcache_tagbits;
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u32 dcache_write;
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u32 dcache_line_length;
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u32 dcache_size;
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u32 dcache_wb;
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unsigned long dcache_base;
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unsigned long dcache_high;
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/* Bus connections */
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u32 use_dopb;
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u32 use_iopb;
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u32 use_dlmb;
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u32 use_ilmb;
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u32 num_fsl;
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/* CPU interrupt line info */
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u32 irq_edge;
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u32 irq_positive;
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u32 area_optimised;
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/* HW debug support */
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u32 hw_debug;
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u32 num_pc_brk;
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u32 num_rd_brk;
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u32 num_wr_brk;
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u32 cpu_clock_freq; /* store real freq of cpu */
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u32 freq_div_hz; /* store freq/HZ */
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/* FPGA family */
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u32 fpga_family_code;
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/* User define */
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u32 pvr_user1;
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u32 pvr_user2;
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};
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extern struct cpuinfo cpuinfo;
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/* fwd declarations of the various CPUinfo populators */
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void setup_cpuinfo(void);
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void set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu);
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void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu);
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static inline unsigned int fcpu(struct device_node *cpu, char *n)
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{
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int *val;
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return (val = (int *) of_get_property(cpu, n, NULL)) ?
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be32_to_cpup(val) : 0;
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}
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#endif /* _ASM_MICROBLAZE_CPUINFO_H */
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