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| author | Simon Glass <sjg@chromium.org> | 2015-08-10 20:44:31 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-08-14 09:50:10 -0600 |
| commit | 2db937456114d964e814f8cc25131e3b2c641b49 (patch) | |
| tree | 34a1da74ebec34a753ed9c7387ffcb4bcb82aaf5 /arch | |
| parent | 1fed87db6a6a2eea7f93667e98db41e258b9c8f0 (diff) | |
| download | u-boot-imx-2db937456114d964e814f8cc25131e3b2c641b49.zip u-boot-imx-2db937456114d964e814f8cc25131e3b2c641b49.tar.gz u-boot-imx-2db937456114d964e814f8cc25131e3b2c641b49.tar.bz2 | |
x86: Move the GDT into global_data
Rather than keeping track of the Global Descriptor Table in its own memory
we may as well put it in global_data with everything else. As a first step,
stop using the separately allocated GDT.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/cpu/cpu.c | 9 | ||||
| -rw-r--r-- | arch/x86/include/asm/global_data.h | 4 |
2 files changed, 8 insertions, 5 deletions
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index 129777c..4f57145 100644 --- a/arch/x86/cpu/cpu.c +++ b/arch/x86/cpu/cpu.c @@ -136,9 +136,10 @@ static void load_gdt(const u64 *boot_gdt, u16 num_entries) asm volatile("lgdtl %0\n" : : "m" (gdt)); } -void setup_gdt(gd_t *id, u64 *gdt_addr) +void setup_gdt(gd_t *new_gd, u64 *gdt_addr) { - id->arch.gdt = gdt_addr; + gdt_addr = new_gd->arch.gdt; + /* CS: code, read/execute, 4 GB, base 0 */ gdt_addr[X86_GDT_ENTRY_32BIT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff); @@ -146,9 +147,9 @@ void setup_gdt(gd_t *id, u64 *gdt_addr) gdt_addr[X86_GDT_ENTRY_32BIT_DS] = GDT_ENTRY(0xc093, 0, 0xfffff); /* FS: data, read/write, 4 GB, base (Global Data Pointer) */ - id->arch.gd_addr = id; + new_gd->arch.gd_addr = new_gd; gdt_addr[X86_GDT_ENTRY_32BIT_FS] = GDT_ENTRY(0xc093, - (ulong)&id->arch.gd_addr, 0xfffff); + (ulong)&new_gd->arch.gd_addr, 0xfffff); /* 16-bit CS: code, read/execute, 64 kB, base 0 */ gdt_addr[X86_GDT_ENTRY_16BIT_CS] = GDT_ENTRY(0x009b, 0, 0x0ffff); diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h index f7e3889..35148ab 100644 --- a/arch/x86/include/asm/global_data.h +++ b/arch/x86/include/asm/global_data.h @@ -10,6 +10,8 @@ #ifndef __ASSEMBLY__ +#include <asm/processor.h> + enum pei_boot_mode_t { PEI_BOOT_NONE = 0, PEI_BOOT_SOFT_RESET, @@ -44,6 +46,7 @@ struct mtrr_request { /* Architecture-specific global data */ struct arch_global_data { + u64 gdt[X86_GDT_NUM_ENTRIES] __aligned(16); struct global_data *gd_addr; /* Location of Global Data */ uint8_t x86; /* CPU family */ uint8_t x86_vendor; /* CPU vendor */ @@ -68,7 +71,6 @@ 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 */ ulong table; /* Table pointer from previous loader */ }; |