diff options
Diffstat (limited to 'bsps/microblaze/microblaze_fpga/start/microblaze_invalidate_dcache.S')
| -rw-r--r-- | bsps/microblaze/microblaze_fpga/start/microblaze_invalidate_dcache.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/bsps/microblaze/microblaze_fpga/start/microblaze_invalidate_dcache.S b/bsps/microblaze/microblaze_fpga/start/microblaze_invalidate_dcache.S new file mode 100644 index 0000000000..d5bf91e626 --- /dev/null +++ b/bsps/microblaze/microblaze_fpga/start/microblaze_invalidate_dcache.S @@ -0,0 +1,29 @@ +/****************************************************************************** +* Copyright (c) 2008 - 2020 Xilinx, Inc. All rights reserved. +* SPDX-License-Identifier: MIT +******************************************************************************/ + +#include <bspopts.h> + + .text + .globl microblaze_invalidate_dcache + .ent microblaze_invalidate_dcache + .align 2 + +microblaze_invalidate_dcache: + addik r5, r0, BSP_MICROBLAZE_FPGA_DCACHE_BASE & (-(4 * BSP_MICROBLAZE_FPGA_DCACHE_LINE_LEN)) + addik r6, r5, BSP_MICROBLAZE_FPGA_DCACHE_SIZE & (-(4 * BSP_MICROBLAZE_FPGA_DCACHE_LINE_LEN)) + +L_start: + wdc r5, r0 /* Invalidate the Cache */ + + cmpu r18, r5, r6 /* Are we at the end? */ + blei r18, L_done + + brid L_start /* Branch to the beginning of the loop */ + addik r5, r5, (BSP_MICROBLAZE_FPGA_DCACHE_LINE_LEN * 4) /* Increment the address by 4 (delay slot) */ +L_done: + rtsd r15, 8 /* Return */ + nop + + .end microblaze_invalidate_dcache |