1fea25720SGraeme Russ /* 2fea25720SGraeme Russ * (C) Copyright 2002-2010 3fea25720SGraeme Russ * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4fea25720SGraeme Russ * 5fea25720SGraeme Russ * See file CREDITS for list of people who contributed to this 6fea25720SGraeme Russ * project. 7fea25720SGraeme Russ * 8fea25720SGraeme Russ * This program is free software; you can redistribute it and/or 9fea25720SGraeme Russ * modify it under the terms of the GNU General Public License as 10fea25720SGraeme Russ * published by the Free Software Foundation; either version 2 of 11fea25720SGraeme Russ * the License, or (at your option) any later version. 12fea25720SGraeme Russ * 13fea25720SGraeme Russ * This program is distributed in the hope that it will be useful, 14fea25720SGraeme Russ * but WITHOUT ANY WARRANTY; without even the implied warranty of 15fea25720SGraeme Russ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16fea25720SGraeme Russ * GNU General Public License for more details. 17fea25720SGraeme Russ * 18fea25720SGraeme Russ * You should have received a copy of the GNU General Public License 19fea25720SGraeme Russ * along with this program; if not, write to the Free Software 20fea25720SGraeme Russ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21fea25720SGraeme Russ * MA 02111-1307 USA 22fea25720SGraeme Russ */ 23fea25720SGraeme Russ 24fea25720SGraeme Russ #ifndef __ASM_GBL_DATA_H 25fea25720SGraeme Russ #define __ASM_GBL_DATA_H 265cb48582SSimon Glass 275cb48582SSimon Glass #ifndef __ASSEMBLY__ 285cb48582SSimon Glass 295cb48582SSimon Glass /* Architecture-specific global data */ 305cb48582SSimon Glass struct arch_global_data { 31*5a35e6c4SSimon Glass struct global_data *gd_addr; /* Location of Global Data */ 325cb48582SSimon Glass }; 335cb48582SSimon Glass 34fea25720SGraeme Russ /* 35fea25720SGraeme Russ * The following data structure is placed in some memory wich is 36fea25720SGraeme Russ * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or 37fea25720SGraeme Russ * some locked parts of the data cache) to allow for a minimum set of 38fea25720SGraeme Russ * global variables during system initialization (until we have set 39fea25720SGraeme Russ * up the memory controller so that we can use RAM). 40fea25720SGraeme Russ */ 41fea25720SGraeme Russ 42c953fbeeSGabe Black #include <asm/u-boot.h> 43c953fbeeSGabe Black 44e4fb6116SGraeme Russ typedef struct global_data gd_t; 45e4fb6116SGraeme Russ 46e4fb6116SGraeme Russ struct global_data { 475cb48582SSimon Glass struct arch_global_data arch; /* architecture-specific data */ 48fea25720SGraeme Russ bd_t *bd; 49fea25720SGraeme Russ unsigned long flags; 5055f97c1bSSimon Glass unsigned int baudrate; 51fea25720SGraeme Russ unsigned long have_console; /* serial_init() was called */ 529558b48aSGraeme Russ #ifdef CONFIG_PRE_CONSOLE_BUFFER 539558b48aSGraeme Russ unsigned long precon_buf_idx; /* Pre-Console buffer index */ 549558b48aSGraeme Russ #endif 55fea25720SGraeme Russ unsigned long reloc_off; /* Relocation Offset */ 56fea25720SGraeme Russ unsigned long load_off; /* Load Offset */ 57fea25720SGraeme Russ unsigned long env_addr; /* Address of Environment struct */ 58fea25720SGraeme Russ unsigned long env_valid; /* Checksum of Environment valid? */ 59fea25720SGraeme Russ unsigned long cpu_clk; /* CPU clock in Hz! */ 60fea25720SGraeme Russ unsigned long bus_clk; 61fea25720SGraeme Russ unsigned long relocaddr; /* Start address of U-Boot in RAM */ 62fea25720SGraeme Russ unsigned long start_addr_sp; /* start_addr_stackpointer */ 63fea25720SGraeme Russ phys_size_t ram_size; /* RAM size */ 64fea25720SGraeme Russ unsigned long reset_status; /* reset status register at boot */ 65028a5628SGabe Black const void *fdt_blob; /* Our device tree, NULL if none */ 66fea25720SGraeme Russ void **jt; /* jump table */ 67fea25720SGraeme Russ char env_buf[32]; /* buffer for getenv() before reloc. */ 68e4fb6116SGraeme Russ }; 69fea25720SGraeme Russ 709e6c572fSGraeme Russ static inline gd_t *get_fs_gd_ptr(void) 719e6c572fSGraeme Russ { 729e6c572fSGraeme Russ gd_t *gd_ptr; 739e6c572fSGraeme Russ 749e6c572fSGraeme Russ asm volatile("fs movl 0, %0\n" : "=r" (gd_ptr)); 759e6c572fSGraeme Russ 769e6c572fSGraeme Russ return gd_ptr; 779e6c572fSGraeme Russ } 789e6c572fSGraeme Russ 799e6c572fSGraeme Russ #define gd get_fs_gd_ptr() 80fea25720SGraeme Russ 81fea25720SGraeme Russ #endif 82fea25720SGraeme Russ 8347fde91fSMike Frysinger #include <asm-generic/global_data_flags.h> 84fea25720SGraeme Russ 8591d82a29SGabe Black /* 8691d82a29SGabe Black * Our private Global Data Flags 8791d82a29SGabe Black */ 8891d82a29SGabe Black #define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */ 8991d82a29SGabe Black #define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */ 9091d82a29SGabe Black 91fea25720SGraeme Russ #define DECLARE_GLOBAL_DATA_PTR 92fea25720SGraeme Russ 93fea25720SGraeme Russ #endif /* __ASM_GBL_DATA_H */ 94