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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-12-18 10:36:33 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-12-31 09:51:50 +0100 |
| commit | bae775a4f43449e79622ed144118554ff780744a (patch) | |
| tree | de6094464d801f18c33bb6e929ee9afef0cfce82 /src/arch/x86/boot/gdt.c | |
| parent | a91e1e6cc18b3d510a8dd5e3b2c7bdbba3299369 (diff) | |
arch/x86: Declare GDT symbols and move_gdt()
We relocate GDT to CBMEM, this can be done late in ramstage.
Note: We currently do this for BSP CPU only.
Change-Id: I626faaf22f846433f25ca2253d6a2a5230f50b6b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7858
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/arch/x86/boot/gdt.c')
| -rw-r--r-- | src/arch/x86/boot/gdt.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/arch/x86/boot/gdt.c b/src/arch/x86/boot/gdt.c index 7ebf92ae85..7b64af7c2e 100644 --- a/src/arch/x86/boot/gdt.c +++ b/src/arch/x86/boot/gdt.c @@ -20,12 +20,8 @@ #include <types.h> #include <string.h> #include <cbmem.h> -#include <lib.h> #include <console/console.h> - -// Global Descriptor Table, defined in c_start.S -extern char gdt; -extern char gdt_end; +#include <cpu/x86/gdt.h> /* i386 lgdt argument */ struct gdtarg { @@ -33,11 +29,13 @@ struct gdtarg { u32 base; } __attribute__((packed)); -// Copy GDT to new location and reload it +/* Copy GDT to new location and reload it. + * FIXME: We only do this for BSP CPU. + */ void move_gdt(void) { void *newgdt; - u16 num_gdt_bytes = &gdt_end - &gdt; + u16 num_gdt_bytes = (u32)&gdt_end - (u32)&gdt; struct gdtarg gdtarg; newgdt = cbmem_find(CBMEM_ID_GDT); |