From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Glass Date: Mon, 27 Apr 2015 16:48:16 -0600 Subject: [U-Boot] [PATCH 13/20] x86: Store the GDT pointer in global_data In-Reply-To: <1430174911-27538-1-git-send-email-sjg@chromium.org> References: <1430174911-27538-1-git-send-email-sjg@chromium.org> Message-ID: <1430174911-27538-14-git-send-email-sjg@chromium.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 --- 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 -- 2.2.0.rc0.207.ga3a616c