diff options
Diffstat (limited to 'bsps/powerpc/qoriq/start/l1cache.S')
| -rw-r--r-- | bsps/powerpc/qoriq/start/l1cache.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/bsps/powerpc/qoriq/start/l1cache.S b/bsps/powerpc/qoriq/start/l1cache.S new file mode 100644 index 0000000000..bee3d28123 --- /dev/null +++ b/bsps/powerpc/qoriq/start/l1cache.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_l1cache_invalidate + + .section ".bsp_start_text", "ax" + +qoriq_l1cache_invalidate: + + /* Invalidate L1 data cache */ + mfspr r3, FSL_EIS_L1CSR0 + ori r3, r3, FSL_EIS_L1CSR0_CFI + mtspr FSL_EIS_L1CSR0, r3 +1: + mfspr r3, FSL_EIS_L1CSR0 + andi. r3, r3, FSL_EIS_L1CSR0_CFI + bne 1b + isync + + /* Invalidate L1 instruction cache */ + mfspr r3, FSL_EIS_L1CSR1 + ori r3, r3, FSL_EIS_L1CSR1_ICFI + mtspr FSL_EIS_L1CSR1, r3 +1: + mfspr r3, FSL_EIS_L1CSR1 + andi. r3, r3, FSL_EIS_L1CSR1_ICFI + bne 1b + isync + + blr |