2 * (C) Copyright 2008 Texas Insturments
5 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Marius Groeger <mgroeger@sysgo.de>
9 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
11 * See file CREDITS for list of people who contributed to this
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
36 #include <asm/system.h>
37 #include <asm/cache.h>
38 #include <asm/armv7.h>
39 #include <linux/compiler.h>
41 void __naked save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3)
44 * Stack pointer is not yet initialized
45 * Don't save anything to stack even if compiled with -O0
50 void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3)
51 __attribute__((weak, alias("save_boot_params_default")));
53 int cleanup_before_linux(void)
56 * this function is called just before we call linux
57 * it prepares the processor for linux
59 * we turn off caches etc ...
61 #ifndef CONFIG_SPL_BUILD
66 * Turn off I-cache and invalidate it
69 invalidate_icache_all();
73 * dcache_disable() in turn flushes the d-cache and disables MMU
76 v7_outer_cache_disable();
79 * After D-cache is flushed and before it is disabled there may
80 * be some new valid entries brought into the cache. We are sure
81 * that these lines are not dirty and will not affect our execution.
82 * (because unwinding the call-stack and setting a bit in CP15 SCTRL
83 * is all we did during this. We have not pushed anything on to the
84 * stack. Neither have we affected any static data)
85 * So just invalidate the entire d-cache again to avoid coherency
88 invalidate_dcache_all();