From: Simon Glass Date: Wed, 29 Apr 2015 02:25:15 +0000 (-0600) Subject: x86: Store the GDT pointer in global_data X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=52845296be8190c3f581090d6336fa033f2bd2d8;p=project%2Fbcm63xx%2Fu-boot.git x86: Store the GDT pointer in global_data 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 Reviewed-by: Bin Meng --- diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index 02e66d80db..78eb3feb3b 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 5ee06eb70d..4d9eac676e 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