diff options
| author | Simon Glass <sjg@chromium.org> | 2025-03-15 14:25:41 +0000 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2025-04-03 11:41:55 -0600 |
| commit | 5ee60f3afa146e45752e1e99c382f18dd7f8200e (patch) | |
| tree | e19d067080f60e21a105e6a9dc6290cd39e4fa83 /arch/x86/cpu/i386/cpu.c | |
| parent | b4a3ebe30426712a1981eb3bf53992d88bae01e3 (diff) | |
x86: Support CPU functions in long mode
At present it is not possible to find out the physical-address size in
long mode, so a predefined value is used.
Update the macros to support this properly, since it is important when
programming MTRRs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/cpu/i386/cpu.c')
| -rw-r--r-- | arch/x86/cpu/i386/cpu.c | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/arch/x86/cpu/i386/cpu.c b/arch/x86/cpu/i386/cpu.c index b108f724c51..ee6dbeb5c48 100644 --- a/arch/x86/cpu/i386/cpu.c +++ b/arch/x86/cpu/i386/cpu.c @@ -35,10 +35,6 @@ DECLARE_GLOBAL_DATA_PTR; -#define CPUID_FEATURE_PAE BIT(6) -#define CPUID_FEATURE_PSE36 BIT(17) -#define CPUID_FEAURE_HTT BIT(28) - /* * Constructor for a conventional segment GDT (or LDT) entry * This is a macro so it can be used in initialisers @@ -412,25 +408,6 @@ static void setup_identity(void) } } -static uint cpu_cpuid_extended_level(void) -{ - return cpuid_eax(0x80000000); -} - -int cpu_phys_address_size(void) -{ - if (!has_cpuid()) - return 32; - - if (cpu_cpuid_extended_level() >= 0x80000008) - return cpuid_eax(0x80000008) & 0xff; - - if (cpuid_edx(1) & (CPUID_FEATURE_PAE | CPUID_FEATURE_PSE36)) - return 36; - - return 32; -} - static void setup_mtrr(void) { u64 mtrr_cap; |