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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-04-21 12:37:25 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-04-22 09:25:10 +0200 |
commit | c287dc0f4642544f001ad192794df311d640a3a7 (patch) | |
tree | 27d087006be91daa3a2d9109e36d8e419df3d0b6 /c/src/lib/libbsp/powerpc/qoriq/startup | |
parent | bsp/qoriq: Optionally initialize register HID0 (diff) | |
download | rtems-c287dc0f4642544f001ad192794df311d640a3a7.tar.bz2 |
bsp/qoriq: Flush and invalidate all L2 caches
Diffstat (limited to 'c/src/lib/libbsp/powerpc/qoriq/startup')
-rw-r--r-- | c/src/lib/libbsp/powerpc/qoriq/startup/l2cache.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/qoriq/startup/l2cache.S b/c/src/lib/libbsp/powerpc/qoriq/startup/l2cache.S new file mode 100644 index 0000000000..1c57659aa1 --- /dev/null +++ b/c/src/lib/libbsp/powerpc/qoriq/startup/l2cache.S @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2015, 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <libcpu/powerpc-utility.h> + + .global qoriq_l2cache_flush_invalidate + + .section ".bsp_start_text", "ax" + +qoriq_l2cache_flush_invalidate: + + /* Flush L2 cache */ + lwz r4, 0(r3) + oris r4, r4, FSL_EIS_L2CSR0_L2FL >> 16 + stw r4, 0(r3) +1: + lwz r4, 0(r3) + andis. r4, r4, FSL_EIS_L2CSR0_L2FL >> 16 + bne 1b + isync + + /* Invalidate L2 cache */ + lwz r4, 0(r3) + oris r4, r4, FSL_EIS_L2CSR0_L2FI >> 16 + stw r4, 0(r3) +1: + lwz r4, 0(r3) + andis. r4, r4, FSL_EIS_L2CSR0_L2FI >> 16 + bne 1b + isync + + blr |