diff options
Diffstat (limited to 'arch/x86/include/asm/global_data.h')
| -rw-r--r-- | arch/x86/include/asm/global_data.h | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h index 05a2139d00..908a02c900 100644 --- a/arch/x86/include/asm/global_data.h +++ b/arch/x86/include/asm/global_data.h @@ -36,6 +36,8 @@ #ifndef __ASSEMBLY__ typedef struct global_data { + /* NOTE: gd_addr MUST be first member of struct global_data! */ + unsigned long gd_addr; /* Location of Global Data */ bd_t *bd; unsigned long flags; unsigned long baudrate; @@ -51,13 +53,24 @@ typedef struct global_data { unsigned long bus_clk; unsigned long relocaddr; /* Start address of U-Boot in RAM */ unsigned long start_addr_sp; /* start_addr_stackpointer */ + unsigned long gdt_addr; /* Location of GDT */ + unsigned long new_gd_addr; /* New location of Global Data */ phys_size_t ram_size; /* RAM size */ unsigned long reset_status; /* reset status register at boot */ void **jt; /* jump table */ char env_buf[32]; /* buffer for getenv() before reloc. */ } gd_t; -extern gd_t *gd; +static inline gd_t *get_fs_gd_ptr(void) +{ + gd_t *gd_ptr; + + asm volatile("fs movl 0, %0\n" : "=r" (gd_ptr)); + + return gd_ptr; +} + +#define gd get_fs_gd_ptr() #endif @@ -73,12 +86,6 @@ extern gd_t *gd; #define GD_FLG_DISABLE_CONSOLE 0x00040 /* Disable console (in & out) */ #define GD_FLG_ENV_READY 0x00080 /* Environment imported into hash table */ -#if 0 #define DECLARE_GLOBAL_DATA_PTR -#else -#define XTRN_DECLARE_GLOBAL_DATA_PTR extern -#define DECLARE_GLOBAL_DATA_PTR XTRN_DECLARE_GLOBAL_DATA_PTR \ -gd_t *gd -#endif #endif /* __ASM_GBL_DATA_H */ |