diff options
Diffstat (limited to 'include/asm-ppc')
| -rw-r--r-- | include/asm-ppc/global_data.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/include/asm-ppc/global_data.h b/include/asm-ppc/global_data.h new file mode 100644 index 0000000..7cf234d --- /dev/null +++ b/include/asm-ppc/global_data.h @@ -0,0 +1,87 @@ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_GBL_DATA_H +#define __ASM_GBL_DATA_H +/* + * The following data structure is placed in some memory wich is + * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or + * some locked parts of the data cache) to allow for a minimum set of + * global variables during system initialization (until we have set + * up the memory controller so that we can use RAM). + * + * Keep it *SMALL* and remember to set CFG_GBL_DATA_SIZE > sizeof(gd_t) + */ + +typedef struct global_data { + bd_t *bd; + unsigned long flags; + unsigned long baudrate; + unsigned long cpu_clk; /* CPU clock in Hz! */ + unsigned long bus_clk; +#if defined(CONFIG_8260) + /* There are many clocks on the MPC8260 - see page 9-5 */ + unsigned long vco_out; + unsigned long cpm_clk; + unsigned long scc_clk; + unsigned long brg_clk; +#endif + unsigned long ram_size; /* RAM size */ + unsigned long reloc_off; /* Relocation Offset */ + unsigned long reset_status; /* reset status register at boot */ + unsigned long env_addr; /* Address of Environment struct */ + unsigned long env_valid; /* Checksum of Environment valid? */ + unsigned long have_console; /* serial_init() was called */ +#if defined(CFG_ALLOC_DPRAM) || defined(CONFIG_8260) + unsigned int dp_alloc_base; + unsigned int dp_alloc_top; +#endif +#if defined(CONFIG_EVB64260) + unsigned int mirror_hack[16]; +#endif +#if defined(CONFIG_SANDPOINT) || defined(CONFIG_MUSENKI) + void * console_addr; +#endif +#if defined(CONFIG_LCD) || defined(CONFIG_VIDEO) + unsigned long fb_base; /* Base address of framebuffer memory */ +#endif +#ifdef CONFIG_BOARD_TYPES + unsigned long board_type; +#endif +} gd_t; + +/* + * Global Data Flags + */ +#define GD_FLG_RELOC 0x00001 /* Code was relocated to RAM */ +#define GD_FLG_DEVINIT 0x00002 /* Devices have been initialized */ + +#if 1 +#define DECLARE_GLOBAL_DATA_PTR register gd_t *gd asm ("r29") +#else /* We could use plain global data, but the resulting code is bigger */ +#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 */ |