Commit 7dfe8bde authored by Simon Glass's avatar Simon Glass
Browse files

x86: Add an enum for some commonly-used GDT bits



Rather than add these as open-coded values, create an enum with the commonly
used flags.
Signed-off-by: default avatarSimon Glass <sjg@chromium.org>
Reviewed-by: default avatarBin Meng <bmeng.cn@gmail.com>
parent b997abd3
......@@ -27,6 +27,24 @@ enum {
X86_VENDOR_UNKNOWN = 0xff
};
/* Global descriptor table (GDT) bits */
enum {
GDT_4KB = 1ULL << 55,
GDT_32BIT = 1ULL << 54,
GDT_LONG = 1ULL << 53,
GDT_PRESENT = 1ULL << 47,
GDT_NOTSYS = 1ULL << 44,
GDT_CODE = 1ULL << 43,
GDT_LIMIT_LOW_SHIFT = 0,
GDT_LIMIT_LOW_MASK = 0xffff,
GDT_LIMIT_HIGH_SHIFT = 48,
GDT_LIMIT_HIGH_MASK = 0xf,
GDT_BASE_LOW_SHIFT = 16,
GDT_BASE_LOW_MASK = 0xffff,
GDT_BASE_HIGH_SHIFT = 56,
GDT_BASE_HIGH_MASK = 0xf,
};
struct cpuid_result {
uint32_t eax;
uint32_t ebx;
......
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