diff options
author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2008-02-15 06:00:23 -0500 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 11:40:47 -0400 |
commit | 03ae5768b6110ebaa97dc3e7abf1c3d8bec5f874 (patch) | |
tree | e9dffa8c5eccd43ea8284d7e2e48b782166bbcac /arch/x86/kernel/cpu/cyrix.c | |
parent | bc7c314d7048017caa0725b41cc577cccf4fc53b (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.c | 13 |
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 | ||
442 | int __init cyrix_init_cpu(void) | 442 | cpu_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 | ||
448 | static struct cpu_dev nsc_cpu_dev __cpuinitdata = { | 444 | static 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 | ||
454 | int __init nsc_init_cpu(void) | 450 | cpu_vendor_dev_register(X86_VENDOR_NSC, &nsc_cpu_dev); |
455 | { | ||
456 | cpu_devs[X86_VENDOR_NSC] = &nsc_cpu_dev; | ||
457 | return 0; | ||
458 | } | ||
459 | |||