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MX35: factorize common assembly code

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Signed-off-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Stefano Babic 2011-08-05 13:43:21 +02:00 committed by Albert ARIBAUD
parent d330883f03
commit 324a131e7c
1 changed files with 140 additions and 0 deletions
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140
arch/arm/include/asm/arch-mx35/lowlevel_macro.S Normal file
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/*
* Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
*
* (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* AIPS setup - Only setup MPROTx registers.
* The PACR default values are good.
*/
.macro init_aips
/*
* Set all MPROTx to be non-bufferable, trusted for R/W,
* not forced to user-mode.
*/
ldr r0, =AIPS1_BASE_ADDR
ldr r1, =AIPS_MPR_CONFIG
str r1, [r0, #0x00]
str r1, [r0, #0x04]
ldr r0, =AIPS2_BASE_ADDR
str r1, [r0, #0x00]
str r1, [r0, #0x04]
/*
* Clear the on and off peripheral modules Supervisor Protect bit
* for SDMA to access them. Did not change the AIPS control registers
* (offset 0x20) access type
*/
ldr r0, =AIPS1_BASE_ADDR
ldr r1, =AIPS_OPACR_CONFIG
str r1, [r0, #0x40]
str r1, [r0, #0x44]
str r1, [r0, #0x48]
str r1, [r0, #0x4C]
str r1, [r0, #0x50]
ldr r0, =AIPS2_BASE_ADDR
str r1, [r0, #0x40]
str r1, [r0, #0x44]
str r1, [r0, #0x48]
str r1, [r0, #0x4C]
str r1, [r0, #0x50]
.endm
/* MAX (Multi-Layer AHB Crossbar Switch) setup */
.macro init_max
ldr r0, =MAX_BASE_ADDR
/* MPR - priority is M4 > M2 > M3 > M5 > M0 > M1 */
ldr r1, =MAX_MPR_CONFIG
str r1, [r0, #0x000] /* for S0 */
str r1, [r0, #0x100] /* for S1 */
str r1, [r0, #0x200] /* for S2 */
str r1, [r0, #0x300] /* for S3 */
str r1, [r0, #0x400] /* for S4 */
/* SGPCR - always park on last master */
ldr r1, =MAX_SGPCR_CONFIG
str r1, [r0, #0x010] /* for S0 */
str r1, [r0, #0x110] /* for S1 */
str r1, [r0, #0x210] /* for S2 */
str r1, [r0, #0x310] /* for S3 */
str r1, [r0, #0x410] /* for S4 */
/* MGPCR - restore default values */
ldr r1, =MAX_MGPCR_CONFIG
str r1, [r0, #0x800] /* for M0 */
str r1, [r0, #0x900] /* for M1 */
str r1, [r0, #0xA00] /* for M2 */
str r1, [r0, #0xB00] /* for M3 */
str r1, [r0, #0xC00] /* for M4 */
str r1, [r0, #0xD00] /* for M5 */
.endm
/* M3IF setup */
.macro init_m3if
/* Configure M3IF registers */
ldr r1, =M3IF_BASE_ADDR
/*
* M3IF Control Register (M3IFCTL)
* MRRP[0] = L2CC0 not on priority list (0 << 0) = 0x00000000
* MRRP[1] = L2CC1 not on priority list (0 << 0) = 0x00000000
* MRRP[2] = MBX not on priority list (0 << 0) = 0x00000000
* MRRP[3] = MAX1 not on priority list (0 << 0) = 0x00000000
* MRRP[4] = SDMA not on priority list (0 << 0) = 0x00000000
* MRRP[5] = MPEG4 not on priority list (0 << 0) = 0x00000000
* MRRP[6] = IPU1 on priority list (1 << 6) = 0x00000040
* MRRP[7] = IPU2 not on priority list (0 << 0) = 0x00000000
* ------------
* 0x00000040
*/
ldr r0, =M3IF_CONFIG
str r0, [r1] /* M3IF control reg */
.endm
.macro core_init
mrc 15, 0, r1, c1, c0, 0
mrc 15, 0, r0, c1, c0, 1
orr r0, r0, #7
mcr 15, 0, r0, c1, c0, 1
orr r1, r1, #(1<<11)
/* Set unaligned access enable */
orr r1, r1, #(1<<22)
/* Set low int latency enable */
orr r1, r1, #(1<<21)
mcr 15, 0, r1, c1, c0, 0
mov r0, #0
/* Set branch prediction enable */
mcr 15, 0, r0, c15, c2, 4
mcr 15, 0, r0, c7, c7, 0 /* invalidate I cache and D cache */
mcr 15, 0, r0, c8, c7, 0 /* invalidate TLBs */
mcr 15, 0, r0, c7, c10, 4 /* Drain the write buffer */
/*
* initializes very early AIPS
* Then it also initializes Multi-Layer AHB Crossbar Switch,
* M3IF
* Also setup the Peripheral Port Remap register inside the core
*/
ldr r0, =0x40000015 /* start from AIPS 2GB region */
mcr p15, 0, r0, c15, c2, 4
.endm