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| ******************************************************************************/ |
| /****************************************************************************** |
| * File : microblaze_disable_dcache.s |
| * Date : 2002, March 20. |
| * Company: Xilinx |
| * Group : Emerging Software Technologies |
| * |
| * Summary: |
| * Disable the L1 dcache on the microblaze. |
| * |
| *******************************************************************************/ |
| |
| #include "xparameters.h" |
| |
| .text |
| .globl microblaze_disable_dcache |
| .ent microblaze_disable_dcache |
| .align 2 |
| microblaze_disable_dcache: |
| #if XPAR_MICROBLAZE_USE_MSR_INSTR == 1 |
| |
| #if XPAR_MICROBLAZE_DCACHE_USE_WRITEBACK != 0 |
| addik r1, r1, -4 |
| swi r15, r1, 0 |
| brlid r15, microblaze_flush_dcache /* microblaze_flush_dcache does not use r1*/ |
| nop |
| lwi r15, r1, 0 |
| addi r1, r1, 4 |
| #endif /* XPAR_MICROBLAZE_DCACHE_USE_WRITEBACK != 0 */ |
| rtsd r15, 8 |
| msrclr r0, 0x80 |
| |
| #else /* XPAR_MICROBLAZE_USE_MSR_INSTR == 1 */ |
| |
| addik r1, r1, -4 |
| |
| #if XPAR_MICROBLAZE_DCACHE_USE_WRITEBACK != 0 |
| swi r15, r1, 0 |
| brlid r15, microblaze_flush_dcache |
| nop |
| #endif /* XPAR_MICROBLAZE_DCACHE_USE_WRITEBACK != 0 */ |
| mfs r11, rmsr |
| andi r11, r11, ~(0x80) |
| mts rmsr, r11 |
| |
| #if XPAR_MICROBLAZE_DCACHE_USE_WRITEBACK != 0 |
| lwi r15, r1, 0 |
| #endif /* XPAR_MICROBLAZE_DCACHE_USE_WRITEBACK != 0 */ |
| |
| rtsd r15, 8 |
| addi r1, r1, 4 |
| |
| #endif /*XPAR_MICROBLAZE_USE_MSR_INSTR == 1*/ |
| .end microblaze_disable_dcache |
