mirror of
https://github.com/AsahiLinux/u-boot
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b710d9d6c2
This is minimum code required to be able to use device-tree for u-boot initialization. Currently only for device driver initialization. Linker script change ensures DTB to be aligned for both options CONFIG_OF_EMBED and CONFIG_OF_SEPARATE. Signed-off-by: Michal Simek <monstr@monstr.eu> Acked-by: Stephan Linz <linz@li-pro.net> CC: Simon Glass <sjg@chromium.org>
55 lines
2 KiB
C
55 lines
2 KiB
C
/*
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* (C) Copyright 2004 Atmark Techno, Inc.
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*
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* Yasushi SHOJI <yashi@atmark-techno.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __ASM_GBL_DATA_H
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#define __ASM_GBL_DATA_H
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/*
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* The following data structure is placed in some memory wich is
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* available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
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* some locked parts of the data cache) to allow for a minimum set of
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* global variables during system initialization (until we have set
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* up the memory controller so that we can use RAM).
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*/
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typedef struct global_data {
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bd_t *bd;
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unsigned long flags;
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unsigned long baudrate;
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unsigned long have_console; /* serial_init() was called */
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#ifdef CONFIG_PRE_CONSOLE_BUFFER
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unsigned long precon_buf_idx; /* Pre-Console buffer index */
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#endif
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unsigned long env_addr; /* Address of Environment struct */
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const void *fdt_blob; /* Our device tree, NULL if none */
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unsigned long env_valid; /* Checksum of Environment valid? */
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unsigned long fb_base; /* base address of frame buffer */
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void **jt; /* jump table */
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char env_buf[32]; /* buffer for getenv() before reloc. */
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} gd_t;
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#include <asm-generic/global_data_flags.h>
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#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r31")
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#endif /* __ASM_GBL_DATA_H */
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