mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
2c451f7831
- Add a framework for layered cache maintenance - separate out SOC specific outer cache maintenance from maintenance of caches known to CPU - Add generic ARMv7 cache maintenance operations that affect all caches known to ARMv7 CPUs. For instance in Cortex-A8 these opertions will affect both L1 and L2 caches. In Cortex-A9 these will affect only L1 cache - D-cache operations supported: - Invalidate entire D-cache - Invalidate D-cache range - Flush(clean & invalidate) entire D-cache - Flush D-cache range - I-cache operations supported: - Invalidate entire I-cache - Add maintenance functions for TLB, branch predictor array etc. - Enable -march=armv7-a so that armv7 assembly instructions can be used Signed-off-by: Aneesh V <aneesh@ti.com>
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*
|
|
* (C) Copyright 2010
|
|
* Texas Instruments, <www.ti.com>
|
|
* Aneesh V <aneesh@ti.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
|
|
*/
|
|
#ifndef _UTILS_H_
|
|
#define _UTILS_H_
|
|
|
|
static inline s32 log_2_n_round_up(u32 n)
|
|
{
|
|
s32 log2n = -1;
|
|
u32 temp = n;
|
|
|
|
while (temp) {
|
|
log2n++;
|
|
temp >>= 1;
|
|
}
|
|
|
|
if (n & (n - 1))
|
|
return log2n + 1; /* not power of 2 - round up */
|
|
else
|
|
return log2n; /* power of 2 */
|
|
}
|
|
|
|
static inline s32 log_2_n_round_down(u32 n)
|
|
{
|
|
s32 log2n = -1;
|
|
u32 temp = n;
|
|
|
|
while (temp) {
|
|
log2n++;
|
|
temp >>= 1;
|
|
}
|
|
|
|
return log2n;
|
|
}
|
|
|
|
#endif
|