2008-06-20 14:18:09 +08:00
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#ifndef ARCH_X86_CPU_H
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#define ARCH_X86_CPU_H
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2005-04-17 06:20:36 +08:00
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struct cpu_model_info {
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2009-03-23 04:36:51 +08:00
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int vendor;
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int family;
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const char *model_names[16];
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2005-04-17 06:20:36 +08:00
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};
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/* attempt to consolidate cpu attributes */
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struct cpu_dev {
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2009-03-23 04:36:51 +08:00
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const char *c_vendor;
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2005-04-17 06:20:36 +08:00
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/* some have two possibilities for cpuid string */
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2009-03-23 04:36:51 +08:00
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const char *c_ident[2];
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2005-04-17 06:20:36 +08:00
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struct cpu_model_info c_models[4];
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2009-03-23 04:36:51 +08:00
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void (*c_early_init)(struct cpuinfo_x86 *);
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2011-08-06 02:01:16 +08:00
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void (*c_bsp_init)(struct cpuinfo_x86 *);
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2009-03-23 04:36:51 +08:00
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void (*c_init)(struct cpuinfo_x86 *);
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void (*c_identify)(struct cpuinfo_x86 *);
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unsigned int (*c_size_cache)(struct cpuinfo_x86 *, unsigned int);
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int c_x86_vendor;
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2005-04-17 06:20:36 +08:00
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};
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2008-09-05 03:09:45 +08:00
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#define cpu_dev_register(cpu_devX) \
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2009-03-12 20:08:49 +08:00
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static const struct cpu_dev *const __cpu_dev_##cpu_devX __used \
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2008-09-05 03:09:45 +08:00
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__attribute__((__section__(".x86_cpu_dev.init"))) = \
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&cpu_devX;
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2005-04-17 06:20:36 +08:00
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2009-03-12 20:08:49 +08:00
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extern const struct cpu_dev *const __x86_cpu_dev_start[],
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*const __x86_cpu_dev_end[];
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x86: use ELF section to list CPU vendor specific code
Replace the hardcoded list of initialization functions for each CPU
vendor by a list in an ELF section, which is read at initialization in
arch/x86/kernel/cpu/cpu.c to fill the cpu_devs[] array. The ELF
section, named .x86cpuvendor.init, is reclaimed after boot, and
contains entries of type "struct cpu_vendor_dev" which associates a
vendor number with a pointer to a "struct cpu_dev" structure.
This first modification allows to remove all the VENDOR_init_cpu()
functions.
This patch also removes the hardcoded calls to early_init_amd() and
early_init_intel(). Instead, we add a "c_early_init" member to the
cpu_dev structure, which is then called if not NULL by the generic CPU
initialization code. Unfortunately, in early_cpu_detect(), this_cpu is
not yet set, so we have to use the cpu_devs[] array directly.
This patch is part of the Linux Tiny project, and is needed for
further patch that will allow to disable compilation of unused CPU
support code.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-15 19:00:23 +08:00
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2010-09-21 09:01:46 +08:00
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extern void get_cpu_cap(struct cpuinfo_x86 *c);
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2009-11-21 21:01:45 +08:00
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extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c);
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2010-09-29 06:35:01 +08:00
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extern void get_cpu_cap(struct cpuinfo_x86 *c);
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2008-06-06 18:01:13 +08:00
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2008-06-20 14:18:09 +08:00
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#endif
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