mirror of
https://github.com/CTCaer/switch-l4t-atf.git
synced 2024-12-03 16:10:51 +00:00
3ec5204c49
This patch enables cache helper functions `flush_dcache_range`, `clean_dcache_range` and `invalidate_dcache_range` to exit early if the size argument specified is zero Change-Id: I0b63e8f4bd3d47ec08bf2a0b0b9a7ff8a269a9b0 Signed-off-by: Soby Mathew <soby.mathew@arm.com>
218 lines
6.3 KiB
ArmAsm
218 lines
6.3 KiB
ArmAsm
/*
|
|
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <arch.h>
|
|
#include <asm_macros.S>
|
|
|
|
.globl flush_dcache_range
|
|
.globl clean_dcache_range
|
|
.globl inv_dcache_range
|
|
.globl dcsw_op_louis
|
|
.globl dcsw_op_all
|
|
.globl dcsw_op_level1
|
|
.globl dcsw_op_level2
|
|
.globl dcsw_op_level3
|
|
|
|
/*
|
|
* This macro can be used for implementing various data cache operations `op`
|
|
*/
|
|
.macro do_dcache_maintenance_by_mva op, coproc, opc1, CRn, CRm, opc2
|
|
/* Exit early if size is zero */
|
|
cmp r1, #0
|
|
beq exit_loop_\op
|
|
dcache_line_size r2, r3
|
|
add r1, r0, r1
|
|
sub r3, r2, #1
|
|
bic r0, r0, r3
|
|
loop_\op:
|
|
stcopr r0, \coproc, \opc1, \CRn, \CRm, \opc2
|
|
add r0, r0, r2
|
|
cmp r0, r1
|
|
blo loop_\op
|
|
dsb sy
|
|
exit_loop_\op:
|
|
bx lr
|
|
.endm
|
|
|
|
/* ------------------------------------------
|
|
* Clean+Invalidate from base address till
|
|
* size. 'r0' = addr, 'r1' = size
|
|
* ------------------------------------------
|
|
*/
|
|
func flush_dcache_range
|
|
do_dcache_maintenance_by_mva cimvac, DCCIMVAC
|
|
endfunc flush_dcache_range
|
|
|
|
/* ------------------------------------------
|
|
* Clean from base address till size.
|
|
* 'r0' = addr, 'r1' = size
|
|
* ------------------------------------------
|
|
*/
|
|
func clean_dcache_range
|
|
do_dcache_maintenance_by_mva cmvac, DCCMVAC
|
|
endfunc clean_dcache_range
|
|
|
|
/* ------------------------------------------
|
|
* Invalidate from base address till
|
|
* size. 'r0' = addr, 'r1' = size
|
|
* ------------------------------------------
|
|
*/
|
|
func inv_dcache_range
|
|
do_dcache_maintenance_by_mva imvac, DCIMVAC
|
|
endfunc inv_dcache_range
|
|
|
|
/* ----------------------------------------------------------------
|
|
* Data cache operations by set/way to the level specified
|
|
*
|
|
* The main function, do_dcsw_op requires:
|
|
* r0: The operation type (DC_OP_ISW, DC_OP_CISW, DC_OP_CSW),
|
|
* as defined in arch.h
|
|
* r1: The cache level to begin operation from
|
|
* r2: clidr_el1
|
|
* r3: The last cache level to operate on
|
|
* and will carry out the operation on each data cache from level 0
|
|
* to the level in r3 in sequence
|
|
*
|
|
* The dcsw_op macro sets up the r2 and r3 parameters based on
|
|
* clidr_el1 cache information before invoking the main function
|
|
* ----------------------------------------------------------------
|
|
*/
|
|
|
|
.macro dcsw_op shift, fw, ls
|
|
ldcopr r2, CLIDR
|
|
ubfx r3, r2, \shift, \fw
|
|
lsl r3, r3, \ls
|
|
mov r1, #0
|
|
b do_dcsw_op
|
|
.endm
|
|
|
|
func do_dcsw_op
|
|
push {r4-r12,lr}
|
|
adr r11, dcsw_loop_table // compute cache op based on the operation type
|
|
add r6, r11, r0, lsl #3 // cache op is 2x32-bit instructions
|
|
loop1:
|
|
add r10, r1, r1, LSR #1 // Work out 3x current cache level
|
|
mov r12, r2, LSR r10 // extract cache type bits from clidr
|
|
and r12, r12, #7 // mask the bits for current cache only
|
|
cmp r12, #2 // see what cache we have at this level
|
|
blo level_done // no cache or only instruction cache at this level
|
|
|
|
stcopr r1, CSSELR // select current cache level in csselr
|
|
isb // isb to sych the new cssr&csidr
|
|
ldcopr r12, CCSIDR // read the new ccsidr
|
|
and r10, r12, #7 // extract the length of the cache lines
|
|
add r10, r10, #4 // add 4 (r10 = line length offset)
|
|
ubfx r4, r12, #3, #10 // r4 = maximum way number (right aligned)
|
|
clz r5, r4 // r5 = the bit position of the way size increment
|
|
mov r9, r4 // r9 working copy of the aligned max way number
|
|
|
|
loop2:
|
|
ubfx r7, r12, #13, #15 // r7 = max set number (right aligned)
|
|
|
|
loop3:
|
|
orr r0, r1, r9, LSL r5 // factor in the way number and cache level into r0
|
|
orr r0, r0, r7, LSL r10 // factor in the set number
|
|
|
|
blx r6
|
|
subs r7, r7, #1 // decrement the set number
|
|
bhs loop3
|
|
subs r9, r9, #1 // decrement the way number
|
|
bhs loop2
|
|
level_done:
|
|
add r1, r1, #2 // increment the cache number
|
|
cmp r3, r1
|
|
dsb sy // ensure completion of previous cache maintenance instruction
|
|
bhi loop1
|
|
|
|
mov r6, #0
|
|
stcopr r6, CSSELR //select cache level 0 in csselr
|
|
dsb sy
|
|
isb
|
|
pop {r4-r12,pc}
|
|
|
|
dcsw_loop_table:
|
|
stcopr r0, DCISW
|
|
bx lr
|
|
stcopr r0, DCCISW
|
|
bx lr
|
|
stcopr r0, DCCSW
|
|
bx lr
|
|
|
|
endfunc do_dcsw_op
|
|
|
|
/* ---------------------------------------------------------------
|
|
* Data cache operations by set/way till PoU.
|
|
*
|
|
* The function requires :
|
|
* r0: The operation type (DC_OP_ISW, DC_OP_CISW, DC_OP_CSW),
|
|
* as defined in arch.h
|
|
* ---------------------------------------------------------------
|
|
*/
|
|
func dcsw_op_louis
|
|
dcsw_op #LOUIS_SHIFT, #CLIDR_FIELD_WIDTH, #LEVEL_SHIFT
|
|
endfunc dcsw_op_louis
|
|
|
|
/* ---------------------------------------------------------------
|
|
* Data cache operations by set/way till PoC.
|
|
*
|
|
* The function requires :
|
|
* r0: The operation type (DC_OP_ISW, DC_OP_CISW, DC_OP_CSW),
|
|
* as defined in arch.h
|
|
* ---------------------------------------------------------------
|
|
*/
|
|
func dcsw_op_all
|
|
dcsw_op #LOC_SHIFT, #CLIDR_FIELD_WIDTH, #LEVEL_SHIFT
|
|
endfunc dcsw_op_all
|
|
|
|
|
|
/* ---------------------------------------------------------------
|
|
* Helper macro for data cache operations by set/way for the
|
|
* level specified
|
|
* ---------------------------------------------------------------
|
|
*/
|
|
.macro dcsw_op_level level
|
|
ldcopr r2, CLIDR
|
|
mov r3, \level
|
|
sub r1, r3, #2
|
|
b do_dcsw_op
|
|
.endm
|
|
|
|
/* ---------------------------------------------------------------
|
|
* Data cache operations by set/way for level 1 cache
|
|
*
|
|
* The main function, do_dcsw_op requires:
|
|
* r0: The operation type (DC_OP_ISW, DC_OP_CISW, DC_OP_CSW),
|
|
* as defined in arch.h
|
|
* ---------------------------------------------------------------
|
|
*/
|
|
func dcsw_op_level1
|
|
dcsw_op_level #(1 << LEVEL_SHIFT)
|
|
endfunc dcsw_op_level1
|
|
|
|
/* ---------------------------------------------------------------
|
|
* Data cache operations by set/way for level 2 cache
|
|
*
|
|
* The main function, do_dcsw_op requires:
|
|
* r0: The operation type (DC_OP_ISW, DC_OP_CISW, DC_OP_CSW),
|
|
* as defined in arch.h
|
|
* ---------------------------------------------------------------
|
|
*/
|
|
func dcsw_op_level2
|
|
dcsw_op_level #(2 << LEVEL_SHIFT)
|
|
endfunc dcsw_op_level2
|
|
|
|
/* ---------------------------------------------------------------
|
|
* Data cache operations by set/way for level 3 cache
|
|
*
|
|
* The main function, do_dcsw_op requires:
|
|
* r0: The operation type (DC_OP_ISW, DC_OP_CISW, DC_OP_CSW),
|
|
* as defined in arch.h
|
|
* ---------------------------------------------------------------
|
|
*/
|
|
func dcsw_op_level3
|
|
dcsw_op_level #(3 << LEVEL_SHIFT)
|
|
endfunc dcsw_op_level3
|