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/*-
* Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
* All rights reserved.
*
* Developed by Semihalf.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of MARVELL nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/arm/arm/cpufunc_asm_sheeva.S 212825 2010-09-18 16:57:05Z mav $");
#include <machine/param.h>
.Lsheeva_cache_line_size:
.word _C_LABEL(arm_pdcache_line_size)
.Lsheeva_asm_page_mask:
.word _C_LABEL(PAGE_MASK)
ENTRY(sheeva_setttb)
/* Disable irqs */
mrs r2, cpsr
orr r3, r2, #I32_bit | F32_bit
msr cpsr_c, r3
mov r1, #0
mcr p15, 0, r1, c7, c5, 0 /* Invalidate ICache */
1: mrc p15, 0, r15, c7, c14, 3 /* Test, clean and invalidate DCache */
bne 1b /* More to do? */
mcr p15, 1, r1, c15, c9, 0 /* Clean L2 */
mcr p15, 1, r1, c15, c11, 0 /* Invalidate L2 */
/* Reenable irqs */
msr cpsr_c, r2
mcr p15, 0, r1, c7, c10, 4 /* drain the write buffer */
mcr p15, 0, r0, c2, c0, 0 /* load new TTB */
mcr p15, 0, r0, c8, c7, 0 /* invalidate I+D TLBs */
RET
ENTRY(sheeva_dcache_wbinv_range)
str lr, [sp, #-4]!
mrs lr, cpsr
/* Start with cache line aligned address */
ldr ip, .Lsheeva_cache_line_size
ldr ip, [ip]
sub ip, ip, #1
and r2, r0, ip
add r1, r1, r2
add r1, r1, ip
bics r1, r1, ip
bics r0, r0, ip
ldr ip, .Lsheeva_asm_page_mask
and r2, r0, ip
rsb r2, r2, #PAGE_SIZE
cmp r1, r2
movcc ip, r1
movcs ip, r2
1:
add r3, r0, ip
sub r2, r3, #1
/* Disable irqs */
orr r3, lr, #I32_bit | F32_bit
msr cpsr_c, r3
mcr p15, 5, r0, c15, c15, 0 /* Clean and inv zone start address */
mcr p15, 5, r2, c15, c15, 1 /* Clean and inv zone end address */
/* Enable irqs */
msr cpsr_c, lr
add r0, r0, ip
sub r1, r1, ip
cmp r1, #PAGE_SIZE
movcc ip, r1
movcs ip, #PAGE_SIZE
cmp r1, #0
bne 1b
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
ldr lr, [sp], #4
RET
ENTRY(sheeva_idcache_wbinv_range)
str lr, [sp, #-4]!
mrs lr, cpsr
/* Start with cache line aligned address */
ldr ip, .Lsheeva_cache_line_size
ldr ip, [ip]
sub ip, ip, #1
and r2, r0, ip
add r1, r1, r2
add r1, r1, ip
bics r1, r1, ip
bics r0, r0, ip
ldr ip, .Lsheeva_asm_page_mask
and r2, r0, ip
rsb r2, r2, #PAGE_SIZE
cmp r1, r2
movcc ip, r1
movcs ip, r2
1:
add r3, r0, ip
sub r2, r3, #1
/* Disable irqs */
orr r3, lr, #I32_bit | F32_bit
msr cpsr_c, r3
mcr p15, 5, r0, c15, c15, 0 /* Clean and inv zone start address */
mcr p15, 5, r2, c15, c15, 1 /* Clean and inv zone end address */
/* Enable irqs */
msr cpsr_c, lr
/* Invalidate and clean icache line by line */
ldr r3, .Lsheeva_cache_line_size
ldr r3, [r3]
2:
mcr p15, 0, r0, c7, c5, 1
add r0, r0, r3
cmp r2, r0
bhi 2b
add r0, r2, #1
sub r1, r1, ip
cmp r1, #PAGE_SIZE
movcc ip, r1
movcs ip, #PAGE_SIZE
cmp r1, #0
bne 1b
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
ldr lr, [sp], #4
RET
ENTRY(sheeva_dcache_inv_range)
str lr, [sp, #-4]!
mrs lr, cpsr
/* Start with cache line aligned address */
ldr ip, .Lsheeva_cache_line_size
ldr ip, [ip]
sub ip, ip, #1
and r2, r0, ip
add r1, r1, r2
add r1, r1, ip
bics r1, r1, ip
bics r0, r0, ip
ldr ip, .Lsheeva_asm_page_mask
and r2, r0, ip
rsb r2, r2, #PAGE_SIZE
cmp r1, r2
movcc ip, r1
movcs ip, r2
1:
add r3, r0, ip
sub r2, r3, #1
/* Disable irqs */
orr r3, lr, #I32_bit | F32_bit
msr cpsr_c, r3
mcr p15, 5, r0, c15, c14, 0 /* Inv zone start address */
mcr p15, 5, r2, c15, c14, 1 /* Inv zone end address */
/* Enable irqs */
msr cpsr_c, lr
add r0, r0, ip
sub r1, r1, ip
cmp r1, #PAGE_SIZE
movcc ip, r1
movcs ip, #PAGE_SIZE
cmp r1, #0
bne 1b
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
ldr lr, [sp], #4
RET
ENTRY(sheeva_dcache_wb_range)
str lr, [sp, #-4]!
mrs lr, cpsr
/* Start with cache line aligned address */
ldr ip, .Lsheeva_cache_line_size
ldr ip, [ip]
sub ip, ip, #1
and r2, r0, ip
add r1, r1, r2
add r1, r1, ip
bics r1, r1, ip
bics r0, r0, ip
ldr ip, .Lsheeva_asm_page_mask
and r2, r0, ip
rsb r2, r2, #PAGE_SIZE
cmp r1, r2
movcc ip, r1
movcs ip, r2
1:
add r3, r0, ip
sub r2, r3, #1
/* Disable irqs */
orr r3, lr, #I32_bit | F32_bit
msr cpsr_c, r3
mcr p15, 5, r0, c15, c13, 0 /* Clean zone start address */
mcr p15, 5, r2, c15, c13, 1 /* Clean zone end address */
/* Enable irqs */
msr cpsr_c, lr
add r0, r0, ip
sub r1, r1, ip
cmp r1, #PAGE_SIZE
movcc ip, r1
movcs ip, #PAGE_SIZE
cmp r1, #0
bne 1b
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
ldr lr, [sp], #4
RET
ENTRY(sheeva_l2cache_wbinv_range)
str lr, [sp, #-4]!
mrs lr, cpsr
/* Start with cache line aligned address */
ldr ip, .Lsheeva_cache_line_size
ldr ip, [ip]
sub ip, ip, #1
and r2, r0, ip
add r1, r1, r2
add r1, r1, ip
bics r1, r1, ip
bics r0, r0, ip
ldr ip, .Lsheeva_asm_page_mask
and r2, r0, ip
rsb r2, r2, #PAGE_SIZE
cmp r1, r2
movcc ip, r1
movcs ip, r2
1:
add r3, r0, ip
sub r2, r3, #1
/* Disable irqs */
orr r3, lr, #I32_bit | F32_bit
msr cpsr_c, r3
mcr p15, 1, r0, c15, c9, 4 /* Clean L2 zone start address */
mcr p15, 1, r2, c15, c9, 5 /* Clean L2 zone end address */
mcr p15, 1, r0, c15, c11, 4 /* Inv L2 zone start address */
mcr p15, 1, r2, c15, c11, 5 /* Inv L2 zone end address */
/* Enable irqs */
msr cpsr_c, lr
add r0, r0, ip
sub r1, r1, ip
cmp r1, #PAGE_SIZE
movcc ip, r1
movcs ip, #PAGE_SIZE
cmp r1, #0
bne 1b
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
ldr lr, [sp], #4
RET
ENTRY(sheeva_l2cache_inv_range)
str lr, [sp, #-4]!
mrs lr, cpsr
/* Start with cache line aligned address */
ldr ip, .Lsheeva_cache_line_size
ldr ip, [ip]
sub ip, ip, #1
and r2, r0, ip
add r1, r1, r2
add r1, r1, ip
bics r1, r1, ip
bics r0, r0, ip
ldr ip, .Lsheeva_asm_page_mask
and r2, r0, ip
rsb r2, r2, #PAGE_SIZE
cmp r1, r2
movcc ip, r1
movcs ip, r2
1:
add r3, r0, ip
sub r2, r3, #1
/* Disable irqs */
orr r3, lr, #I32_bit | F32_bit
msr cpsr_c, r3
mcr p15, 1, r0, c15, c11, 4 /* Inv L2 zone start address */
mcr p15, 1, r2, c15, c11, 5 /* Inv L2 zone end address */
/* Enable irqs */
msr cpsr_c, lr
add r0, r0, ip
sub r1, r1, ip
cmp r1, #PAGE_SIZE
movcc ip, r1
movcs ip, #PAGE_SIZE
cmp r1, #0
bne 1b
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
ldr lr, [sp], #4
RET
ENTRY(sheeva_l2cache_wb_range)
str lr, [sp, #-4]!
mrs lr, cpsr
/* Start with cache line aligned address */
ldr ip, .Lsheeva_cache_line_size
ldr ip, [ip]
sub ip, ip, #1
and r2, r0, ip
add r1, r1, r2
add r1, r1, ip
bics r1, r1, ip
bics r0, r0, ip
ldr ip, .Lsheeva_asm_page_mask
and r2, r0, ip
rsb r2, r2, #PAGE_SIZE
cmp r1, r2
movcc ip, r1
movcs ip, r2
1:
add r3, r0, ip
sub r2, r3, #1
/* Disable irqs */
orr r3, lr, #I32_bit | F32_bit
msr cpsr_c, r3
mcr p15, 1, r0, c15, c9, 4 /* Clean L2 zone start address */
mcr p15, 1, r2, c15, c9, 5 /* Clean L2 zone end address */
/* Enable irqs */
msr cpsr_c, lr
add r0, r0, ip
sub r1, r1, ip
cmp r1, #PAGE_SIZE
movcc ip, r1
movcs ip, #PAGE_SIZE
cmp r1, #0
bne 1b
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
ldr lr, [sp], #4
RET
ENTRY(sheeva_l2cache_wbinv_all)
mov r0, #0
mcr p15, 1, r0, c15, c9, 0 /* Clean L2 */
mcr p15, 1, r0, c15, c11, 0 /* Invalidate L2 */
mcr p15, 0, r0, c7, c10, 4 /* drain the write buffer */
RET
/* This function modifies register value as follows:
*
* arg1 arg EFFECT (bit value saved into register)
* 0 0 not changed
* 0 1 negated
* 1 0 cleared
* 1 1 set
*/
ENTRY(sheeva_control_ext)
mrc p15, 1, r3, c15, c1, 0 /* Read the control register */
bic r2, r3, r0 /* Clear bits */
eor r2, r2, r1 /* XOR bits */
teq r2, r3 /* Only write if there is a change */
mcrne p15, 1, r2, c15, c1, 0 /* Write new control register */
mov r0, r3 /* Return old value */
RET
ENTRY(sheeva_cpu_sleep)
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* Drain write buffer */
mcr p15, 0, r0, c7, c0, 4 /* Wait for interrupt */
mov pc, lr