+++ /dev/null
-/*
- * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
- *
- * (C) Copyright 2009 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 <config.h>
-#include <asm/arch/imx-regs.h>
-#include <asm/arch/asm-offsets.h>
-
-/*
- * L2CC Cache setup/invalidation/disable
- */
-.macro init_l2cc
- /* explicitly disable L2 cache */
- mrc 15, 0, r0, c1, c0, 1
- bic r0, r0, #0x2
- mcr 15, 0, r0, c1, c0, 1
-
- /* reconfigure L2 cache aux control reg */
- mov r0, #0xC0 /* tag RAM */
- add r0, r0, #0x4 /* data RAM */
- orr r0, r0, #(1 << 24) /* disable write allocate delay */
- orr r0, r0, #(1 << 23) /* disable write allocate combine */
- orr r0, r0, #(1 << 22) /* disable write allocate */
-
- cmp r3, #0x10 /* r3 contains the silicon rev */
-
- /* disable write combine for TO 2 and lower revs */
- orrls r0, r0, #(1 << 25)
-
- mcr 15, 1, r0, c9, c0, 2
-.endm /* init_l2cc */
-
-/* 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, =0x77777777
- str r1, [r0, #0x0]
- str r1, [r0, #0x4]
- ldr r0, =AIPS2_BASE_ADDR
- str r1, [r0, #0x0]
- str r1, [r0, #0x4]
- /*
- * 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
- */
-.endm /* init_aips */
-
-/* M4IF setup */
-.macro init_m4if
- /* VPU and IPU given higher priority (0x4)
- * IPU accesses with ID=0x1 given highest priority (=0xA)
- */
- ldr r0, =M4IF_BASE_ADDR
-
- ldr r1, =0x00000203
- str r1, [r0, #0x40]
-
- ldr r1, =0x0
- str r1, [r0, #0x44]
-
- ldr r1, =0x00120125
- str r1, [r0, #0x9C]
-
- ldr r1, =0x001901A3
- str r1, [r0, #0x48]
-
-.endm /* init_m4if */
-
-.macro setup_pll pll, freq
- ldr r2, =\pll
- ldr r1, =0x00001232
- str r1, [r2, #PLL_DP_CTL] /* Set DPLL ON (set UPEN bit): BRMO=1 */
- mov r1, #0x2
- str r1, [r2, #PLL_DP_CONFIG] /* Enable auto-restart AREN bit */
-
- str r3, [r2, #PLL_DP_OP]
- str r3, [r2, #PLL_DP_HFS_OP]
-
- str r4, [r2, #PLL_DP_MFD]
- str r4, [r2, #PLL_DP_HFS_MFD]
-
- str r5, [r2, #PLL_DP_MFN]
- str r5, [r2, #PLL_DP_HFS_MFN]
-
- ldr r1, =0x00001232
- str r1, [r2, #PLL_DP_CTL]
-1: ldr r1, [r2, #PLL_DP_CTL]
- ands r1, r1, #0x1
- beq 1b
-.endm
-
-.macro init_clock
- ldr r0, =CCM_BASE_ADDR
-
- /* Gate of clocks to the peripherals first */
- ldr r1, =0x3FFFFFFF
- str r1, [r0, #CLKCTL_CCGR0]
- ldr r1, =0x0
- str r1, [r0, #CLKCTL_CCGR1]
- str r1, [r0, #CLKCTL_CCGR2]
- str r1, [r0, #CLKCTL_CCGR3]
-
- ldr r1, =0x00030000
- str r1, [r0, #CLKCTL_CCGR4]
- ldr r1, =0x00FFF030
- str r1, [r0, #CLKCTL_CCGR5]
- ldr r1, =0x00000300
- str r1, [r0, #CLKCTL_CCGR6]
-
- /* Disable IPU and HSC dividers */
- mov r1, #0x60000
- str r1, [r0, #CLKCTL_CCDR]
-
- /* Make sure to switch the DDR away from PLL 1 */
- ldr r1, =0x19239145
- str r1, [r0, #CLKCTL_CBCDR]
- /* make sure divider effective */
-1: ldr r1, [r0, #CLKCTL_CDHIPR]
- cmp r1, #0x0
- bne 1b
-
- /* Switch ARM to step clock */
- mov r1, #0x4
- str r1, [r0, #CLKCTL_CCSR]
- mov r3, #DP_OP_800
- mov r4, #DP_MFD_800
- mov r5, #DP_MFN_800
- setup_pll PLL1_BASE_ADDR
-
- mov r3, #DP_OP_665
- mov r4, #DP_MFD_665
- mov r5, #DP_MFN_665
- setup_pll PLL3_BASE_ADDR
-
- /* Switch peripheral to PLL 3 */
- ldr r0, =CCM_BASE_ADDR
- ldr r1, =0x000010C0
- str r1, [r0, #CLKCTL_CBCMR]
- ldr r1, =0x13239145
- str r1, [r0, #CLKCTL_CBCDR]
- mov r3, #DP_OP_665
- mov r4, #DP_MFD_665
- mov r5, #DP_MFN_665
- setup_pll PLL2_BASE_ADDR
-
- /* Switch peripheral to PLL2 */
- ldr r0, =CCM_BASE_ADDR
- ldr r1, =0x19239145
- str r1, [r0, #CLKCTL_CBCDR]
- ldr r1, =0x000020C0
- str r1, [r0, #CLKCTL_CBCMR]
-
- mov r3, #DP_OP_216
- mov r4, #DP_MFD_216
- mov r5, #DP_MFN_216
- setup_pll PLL3_BASE_ADDR
-
-
- /* Set the platform clock dividers */
- ldr r0, =ARM_BASE_ADDR
- ldr r1, =0x00000725
- str r1, [r0, #0x14]
-
- ldr r0, =CCM_BASE_ADDR
-
- /* Run 3.0 at Full speed, for other TO's wait till we increase VDDGP */
- ldr r1, =0x0
- ldr r3, [r1, #ROM_SI_REV]
- cmp r3, #0x10
- movls r1, #0x1
- movhi r1, #0
- str r1, [r0, #CLKCTL_CACRR]
-
- /* Switch ARM back to PLL 1 */
- mov r1, #0
- str r1, [r0, #CLKCTL_CCSR]
-
- /* setup the rest */
- /* Use lp_apm (24MHz) source for perclk */
- ldr r1, =0x000020C2
- str r1, [r0, #CLKCTL_CBCMR]
- /* ddr clock from PLL 1, all perclk dividers are 1 since using 24MHz */
- ldr r1, =0x59E35100
- str r1, [r0, #CLKCTL_CBCDR]
-
- /* Restore the default values in the Gate registers */
- ldr r1, =0xFFFFFFFF
- str r1, [r0, #CLKCTL_CCGR0]
- str r1, [r0, #CLKCTL_CCGR1]
- str r1, [r0, #CLKCTL_CCGR2]
- str r1, [r0, #CLKCTL_CCGR3]
- str r1, [r0, #CLKCTL_CCGR4]
- str r1, [r0, #CLKCTL_CCGR5]
- str r1, [r0, #CLKCTL_CCGR6]
-
- /* Use PLL 2 for UART's, get 66.5MHz from it */
- ldr r1, =0xA5A2A020
- str r1, [r0, #CLKCTL_CSCMR1]
- ldr r1, =0x00C30321
- str r1, [r0, #CLKCTL_CSCDR1]
-
- /* make sure divider effective */
-1: ldr r1, [r0, #CLKCTL_CDHIPR]
- cmp r1, #0x0
- bne 1b
-
- mov r1, #0x0
- str r1, [r0, #CLKCTL_CCDR]
-
- /* for cko - for ARM div by 8 */
- mov r1, #0x000A0000
- add r1, r1, #0x00000F0
- str r1, [r0, #CLKCTL_CCOSR]
-.endm
-
-.macro setup_wdog
- ldr r0, =WDOG1_BASE_ADDR
- mov r1, #0x30
- strh r1, [r0]
-.endm
-
-.section ".text.init", "x"
-
-.globl lowlevel_init
-lowlevel_init:
- ldr r0, =GPIO1_BASE_ADDR
- ldr r1, [r0, #0x0]
- orr r1, r1, #(1 << 23)
- str r1, [r0, #0x0]
- ldr r1, [r0, #0x4]
- orr r1, r1, #(1 << 23)
- str r1, [r0, #0x4]
-
-#ifdef ENABLE_IMPRECISE_ABORT
- mrs r1, spsr /* save old spsr */
- mrs r0, cpsr /* read out the cpsr */
- bic r0, r0, #0x100 /* clear the A bit */
- msr spsr, r0 /* update spsr */
- add lr, pc, #0x8 /* update lr */
- movs pc, lr /* update cpsr */
- nop
- nop
- nop
- nop
- msr spsr, r1 /* restore old spsr */
-#endif
-
- init_l2cc
-
- init_aips
-
- init_m4if
-
- init_clock
-
- /* r12 saved upper lr*/
- mov pc,lr
-
-/* Board level setting value */
-DDR_PERCHARGE_CMD: .word 0x04008008
-DDR_REFRESH_CMD: .word 0x00008010
-DDR_LMR1_W: .word 0x00338018
-DDR_LMR_CMD: .word 0xB2220000
-DDR_TIMING_W: .word 0xB02567A9
-DDR_MISC_W: .word 0x000A0104
projects / u-boot / blobdiff