diff options
author | wdenk <wdenk> | 2004-04-18 21:13:41 (GMT) |
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committer | wdenk <wdenk> | 2004-04-18 21:13:41 (GMT) |
commit | 507bbe3e8084a82c20399367801da87db7d14e65 (patch) | |
tree | 0660633e2e1caf4b819fd46ed43f83e3e05c5523 /lib_microblaze/board.c | |
parent | 998eaaecd46ee5f00550e30e606cb5556e0b9345 (diff) | |
download | u-boot-fsl-qoriq-507bbe3e8084a82c20399367801da87db7d14e65.tar.xz |
* Patch by Yasushi Shoji, 07 Apr 2004:
- add support for microblaze processors
- add support for AtmarkTechno "suzaku" board
Diffstat (limited to 'lib_microblaze/board.c')
-rw-r--r-- | lib_microblaze/board.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/lib_microblaze/board.c b/lib_microblaze/board.c new file mode 100644 index 0000000..3e3fb37 --- /dev/null +++ b/lib_microblaze/board.c @@ -0,0 +1,76 @@ +/* + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * 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 + */ + +#include <common.h> +#include <command.h> +#include <malloc.h> +#include <version.h> + +const char version_string[] = + U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"; + +/* + * Begin and End of memory area for malloc(), and current "brk" + */ +static ulong mem_malloc_start; +static ulong mem_malloc_end; +static ulong mem_malloc_brk; + + +void *sbrk (ptrdiff_t increment) +{ + ulong old = mem_malloc_brk; + ulong new = old + increment; + + if ((new < mem_malloc_start) || (new > mem_malloc_end)) { + return (NULL); + } + mem_malloc_brk = new; + return ((void *) old); +} + +/* + * All attempts to come up with a "common" initialization sequence + * that works for all boards and architectures failed: some of the + * requirements are just _too_ different. To get rid of the resulting + * mess of board dependend #ifdef'ed code we now make the whole + * initialization sequence configurable to the user. + * + * The requirements for any new initalization function is simple: it + * receives a pointer to the "global data" structure as it's only + * argument, and returns an integer return code, where 0 means + * "continue" and != 0 means "fatal error, hang the system". + */ +typedef int (init_fnc_t) (void); + +init_fnc_t *init_sequence[] = { + serial_init, /* serial communications setup */ + NULL, +}; + +void hang (void) +{ + puts ("### ERROR ### Please RESET the board ###\n"); + for (;;); +} |