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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2008-02-15 06:00:23 -0500
committerIngo Molnar <mingo@elte.hu>2008-04-17 11:40:47 -0400
commit03ae5768b6110ebaa97dc3e7abf1c3d8bec5f874 (patch)
treee9dffa8c5eccd43ea8284d7e2e48b782166bbcac /arch/x86/kernel/cpu/cyrix.c
parentbc7c314d7048017caa0725b41cc577cccf4fc53b (diff)
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>
Diffstat (limited to 'arch/x86/kernel/cpu/cyrix.c')
-rw-r--r--arch/x86/kernel/cpu/cyrix.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/kernel/cpu/cyrix.c
index 7139b0262703..9c4ee98f2cb8 100644
--- a/arch/x86/kernel/cpu/cyrix.c
+++ b/arch/x86/kernel/cpu/cyrix.c
@@ -439,11 +439,7 @@ static struct cpu_dev cyrix_cpu_dev __cpuinitdata = {
439 .c_identify = cyrix_identify, 439 .c_identify = cyrix_identify,
440}; 440};
441 441
442int __init cyrix_init_cpu(void) 442cpu_vendor_dev_register(X86_VENDOR_CYRIX, &cyrix_cpu_dev);
443{
444 cpu_devs[X86_VENDOR_CYRIX] = &cyrix_cpu_dev;
445 return 0;
446}
447 443
448static struct cpu_dev nsc_cpu_dev __cpuinitdata = { 444static struct cpu_dev nsc_cpu_dev __cpuinitdata = {
449 .c_vendor = "NSC", 445 .c_vendor = "NSC",
@@ -451,9 +447,4 @@ static struct cpu_dev nsc_cpu_dev __cpuinitdata = {
451 .c_init = init_nsc, 447 .c_init = init_nsc,
452}; 448};
453 449
454int __init nsc_init_cpu(void) 450cpu_vendor_dev_register(X86_VENDOR_NSC, &nsc_cpu_dev);
455{
456 cpu_devs[X86_VENDOR_NSC] = &nsc_cpu_dev;
457 return 0;
458}
459