diff options
Diffstat (limited to 'arch/arm/include/asm/arch-mx35/lowlevel_macro.S')
| -rw-r--r-- | arch/arm/include/asm/arch-mx35/lowlevel_macro.S | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx35/lowlevel_macro.S b/arch/arm/include/asm/arch-mx35/lowlevel_macro.S new file mode 100644 index 0000000..bc6dbea --- /dev/null +++ b/arch/arm/include/asm/arch-mx35/lowlevel_macro.S @@ -0,0 +1,139 @@ +/* + * 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 + */ + +#include <asm/arch/imx-regs.h> +#include <generated/asm-offsets.h> +#include <asm/macro.h> + +/* + * AIPS setup - Only setup MPROTx registers. + * The PACR default values are good. + * + * Default argument values: + * - MPR: Set all MPROTx to be non-bufferable, trusted for R/W, not forced to + * user-mode. + * - OPACR: Clear the on and off peripheral modules Supervisor Protect bit for + * SDMA to access them. + */ +.macro init_aips mpr=0x77777777, opacr=0x00000000 + ldr r0, =AIPS1_BASE_ADDR + ldr r1, =\mpr + str r1, [r0, #AIPS_MPR_0_7] + str r1, [r0, #AIPS_MPR_8_15] + ldr r2, =AIPS2_BASE_ADDR + str r1, [r2, #AIPS_MPR_0_7] + str r1, [r2, #AIPS_MPR_8_15] + + /* Did not change the AIPS control registers access type. */ + ldr r1, =\opacr + str r1, [r0, #AIPS_OPACR_0_7] + str r1, [r0, #AIPS_OPACR_8_15] + str r1, [r0, #AIPS_OPACR_16_23] + str r1, [r0, #AIPS_OPACR_24_31] + str r1, [r0, #AIPS_OPACR_32_39] + str r1, [r2, #AIPS_OPACR_0_7] + str r1, [r2, #AIPS_OPACR_8_15] + str r1, [r2, #AIPS_OPACR_16_23] + str r1, [r2, #AIPS_OPACR_24_31] + str r1, [r2, #AIPS_OPACR_32_39] +.endm + +/* + * MAX (Multi-Layer AHB Crossbar Switch) setup + * + * Default argument values: + * - MPR: priority is M4 > M2 > M3 > M5 > M0 > M1 + * - SGPCR: always park on last master + * - MGPCR: restore default values + */ +.macro init_max mpr=0x00302154, sgpcr=0x00000010, mgpcr=0x00000000 + ldr r0, =MAX_BASE_ADDR + ldr r1, =\mpr + str r1, [r0, #MAX_MPR0] /* for S0 */ + str r1, [r0, #MAX_MPR1] /* for S1 */ + str r1, [r0, #MAX_MPR2] /* for S2 */ + str r1, [r0, #MAX_MPR3] /* for S3 */ + str r1, [r0, #MAX_MPR4] /* for S4 */ + ldr r1, =\sgpcr + str r1, [r0, #MAX_SGPCR0] /* for S0 */ + str r1, [r0, #MAX_SGPCR1] /* for S1 */ + str r1, [r0, #MAX_SGPCR2] /* for S2 */ + str r1, [r0, #MAX_SGPCR3] /* for S3 */ + str r1, [r0, #MAX_SGPCR4] /* for S4 */ + ldr r1, =\mgpcr + str r1, [r0, #MAX_MGPCR0] /* for M0 */ + str r1, [r0, #MAX_MGPCR1] /* for M1 */ + str r1, [r0, #MAX_MGPCR2] /* for M2 */ + str r1, [r0, #MAX_MGPCR3] /* for M3 */ + str r1, [r0, #MAX_MGPCR4] /* for M4 */ + str r1, [r0, #MAX_MGPCR5] /* for M5 */ +.endm + +/* + * M3IF setup + * + * Default argument values: + * - CTL: + * MRRP[0] = L2CC0 not on priority list (0 << 0) = 0x00000000 + * MRRP[1] = L2CC1 not on priority list (0 << 1) = 0x00000000 + * MRRP[2] = MBX not on priority list (0 << 2) = 0x00000000 + * MRRP[3] = MAX1 not on priority list (0 << 3) = 0x00000000 + * MRRP[4] = SDMA not on priority list (0 << 4) = 0x00000000 + * MRRP[5] = MPEG4 not on priority list (0 << 5) = 0x00000000 + * MRRP[6] = IPU1 on priority list (1 << 6) = 0x00000040 + * MRRP[7] = IPU2 not on priority list (0 << 7) = 0x00000000 + * ------------ + * 0x00000040 + */ +.macro init_m3if ctl=0x00000040 + /* M3IF Control Register (M3IFCTL) */ + write32 M3IF_BASE_ADDR, \ctl +.endm + +.macro core_init + mrc p15, 0, r1, c1, c0, 0 + + /* Set branch prediction enable */ + mrc p15, 0, r0, c1, c0, 1 + orr r0, r0, #7 + mcr p15, 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 p15, 0, r1, c1, c0, 0 + + mov r0, #0 + + mcr p15, 0, r0, c15, c2, 4 + + mcr p15, 0, r0, c7, c7, 0 /* Invalidate I cache and D cache */ + mcr p15, 0, r0, c8, c7, 0 /* Invalidate TLBs */ + mcr p15, 0, r0, c7, c10, 4 /* Drain the write buffer */ + + /* Setup the Peripheral Port Memory Remap Register */ + ldr r0, =0x40000015 /* Start from AIPS 2-GB region */ + mcr p15, 0, r0, c15, c2, 4 +.endm |
