When we start up additional CPUs we want them to use the same Global Descriptor Table. Store the address of this in global_data so we can reference it later.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/x86/cpu/cpu.c | 1 + arch/x86/include/asm/global_data.h | 1 + 2 files changed, 2 insertions(+)
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index 13b3baa..74bfed2 100644 --- a/arch/x86/cpu/cpu.c +++ b/arch/x86/cpu/cpu.c @@ -133,6 +133,7 @@ static void load_gdt(const u64 *boot_gdt, u16 num_entries)
void setup_gdt(gd_t *id, u64 *gdt_addr) { + id->arch.gdt = gdt_addr; /* CS: code, read/execute, 4 GB, base 0 */ gdt_addr[X86_GDT_ENTRY_32BIT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff);
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h index 5ee06eb..4d9eac6 100644 --- a/arch/x86/include/asm/global_data.h +++ b/arch/x86/include/asm/global_data.h @@ -68,6 +68,7 @@ struct arch_global_data { /* MRC training data to save for the next boot */ char *mrc_output; unsigned int mrc_output_len; + void *gdt; /* Global descriptor table */ };
#endif