mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
129 lines
2 KiB
ArmAsm
129 lines
2 KiB
ArmAsm
#define ASSEMBLY
|
|
#include <asm/linkage.h>
|
|
#include <config.h>
|
|
#include <asm/blackfin.h>
|
|
#include <asm/mach-common/bits/mpu.h>
|
|
|
|
.text
|
|
.align 2
|
|
ENTRY(_blackfin_icache_flush_range)
|
|
R2 = -32;
|
|
R2 = R0 & R2;
|
|
P0 = R2;
|
|
P1 = R1;
|
|
CSYNC;
|
|
1:
|
|
IFLUSH[P0++];
|
|
CC = P0 < P1(iu);
|
|
IF CC JUMP 1b(bp);
|
|
IFLUSH[P0];
|
|
SSYNC;
|
|
RTS;
|
|
|
|
ENTRY(_blackfin_dcache_flush_range)
|
|
R2 = -32;
|
|
R2 = R0 & R2;
|
|
P0 = R2;
|
|
P1 = R1;
|
|
CSYNC;
|
|
1:
|
|
FLUSH[P0++];
|
|
CC = P0 < P1(iu);
|
|
IF CC JUMP 1b(bp);
|
|
FLUSH[P0];
|
|
SSYNC;
|
|
RTS;
|
|
|
|
ENTRY(_icache_invalidate)
|
|
ENTRY(_invalidate_entire_icache)
|
|
[--SP] = (R7:5);
|
|
|
|
P0.L = (IMEM_CONTROL & 0xFFFF);
|
|
P0.H = (IMEM_CONTROL >> 16);
|
|
R7 =[P0];
|
|
|
|
/*
|
|
* Clear the IMC bit , All valid bits in the instruction
|
|
* cache are set to the invalid state
|
|
*/
|
|
BITCLR(R7, IMC_P);
|
|
CLI R6;
|
|
/* SSYNC required before invalidating cache. */
|
|
SSYNC;
|
|
.align 8;
|
|
[P0] = R7;
|
|
SSYNC;
|
|
STI R6;
|
|
|
|
/* Configures the instruction cache agian */
|
|
R6 = (IMC | ENICPLB);
|
|
R7 = R7 | R6;
|
|
|
|
CLI R6;
|
|
SSYNC;
|
|
.align 8;
|
|
[P0] = R7;
|
|
SSYNC;
|
|
STI R6;
|
|
|
|
(R7:5) =[SP++];
|
|
RTS;
|
|
|
|
/*
|
|
* Invalidate the Entire Data cache by
|
|
* clearing DMC[1:0] bits
|
|
*/
|
|
ENTRY(_invalidate_entire_dcache)
|
|
ENTRY(_dcache_invalidate)
|
|
[--SP] = (R7:6);
|
|
|
|
P0.L = (DMEM_CONTROL & 0xFFFF);
|
|
P0.H = (DMEM_CONTROL >> 16);
|
|
R7 =[P0];
|
|
|
|
/*
|
|
* Clear the DMC[1:0] bits, All valid bits in the data
|
|
* cache are set to the invalid state
|
|
*/
|
|
BITCLR(R7, DMC0_P);
|
|
BITCLR(R7, DMC1_P);
|
|
CLI R6;
|
|
SSYNC;
|
|
.align 8;
|
|
[P0] = R7;
|
|
SSYNC;
|
|
STI R6;
|
|
/* Configures the data cache again */
|
|
|
|
R6 = (ACACHE_BCACHE | ENDCPLB | PORT_PREF0);
|
|
R7 = R7 | R6;
|
|
|
|
CLI R6;
|
|
SSYNC;
|
|
.align 8;
|
|
[P0] = R7;
|
|
SSYNC;
|
|
STI R6;
|
|
|
|
(R7:6) =[SP++];
|
|
RTS;
|
|
|
|
ENTRY(_blackfin_dcache_invalidate_range)
|
|
R2 = -32;
|
|
R2 = R0 & R2;
|
|
P0 = R2;
|
|
P1 = R1;
|
|
CSYNC;
|
|
1:
|
|
FLUSHINV[P0++];
|
|
CC = P0 < P1(iu);
|
|
IF CC JUMP 1b(bp);
|
|
|
|
/*
|
|
* If the data crosses a cache line, then we'll be pointing to
|
|
* the last cache line, but won't have flushed/invalidated it yet, so do
|
|
* one more.
|
|
*/
|
|
FLUSHINV[P0];
|
|
SSYNC;
|
|
RTS;
|