mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
205 lines
4.5 KiB
ArmAsm
205 lines
4.5 KiB
ArmAsm
/*
|
|
* Board specific setup info
|
|
*
|
|
* (C) Copyright 2005-2008 Samsung Electronics
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
|
*
|
|
* Derived from board/omap2420h4/platform.S
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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/omap2420.h>
|
|
#include <asm/arch/mem.h>
|
|
#include <asm/arch/clocks.h>
|
|
|
|
#define APOLLON_CS0_BASE 0x00000000
|
|
|
|
#ifdef PRCM_CONFIG_I
|
|
#define SDRC_ACTIM_CTRLA_0_VAL 0x7BA35907
|
|
#define SDRC_ACTIM_CTRLB_0_VAL 0x00000013
|
|
#define SDRC_RFR_CTRL_0_VAL 0x00044C01
|
|
|
|
/* GPMC */
|
|
#define APOLLON_GPMC_CONFIG1_0 0xe30d1201
|
|
#define APOLLON_GPMC_CONFIG2_0 0x000c1000
|
|
#define APOLLON_GPMC_CONFIG3_0 0x00030400
|
|
#define APOLLON_GPMC_CONFIG4_0 0x0B841006
|
|
#define APOLLON_GPMC_CONFIG5_0 0x020F0C11
|
|
#define APOLLON_GPMC_CONFIG6_0 0x00000000
|
|
#define APOLLON_GPMC_CONFIG7_0 (0x00000e40 | (APOLLON_CS0_BASE >> 24))
|
|
|
|
#elif defined(PRCM_CONFIG_II)
|
|
#define SDRC_ACTIM_CTRLA_0_VAL 0x4A59B485
|
|
#define SDRC_ACTIM_CTRLB_0_VAL 0x0000000C
|
|
#define SDRC_RFR_CTRL_0_VAL 0x00030001
|
|
|
|
/* GPMC */
|
|
#define APOLLON_GPMC_CONFIG1_0 0xe30d1201
|
|
#define APOLLON_GPMC_CONFIG2_0 0x00080E81
|
|
#define APOLLON_GPMC_CONFIG3_0 0x00030400
|
|
#define APOLLON_GPMC_CONFIG4_0 0x08041586
|
|
#define APOLLON_GPMC_CONFIG5_0 0x020C090E
|
|
#define APOLLON_GPMC_CONFIG6_0 0x00000000
|
|
#define APOLLON_GPMC_CONFIG7_0 (0x00000e40 | (APOLLON_CS0_BASE >> 24))
|
|
|
|
#else
|
|
#error "Please configure PRCM schecm"
|
|
#endif
|
|
|
|
_TEXT_BASE:
|
|
.word TEXT_BASE /* sdram load addr from config.mk */
|
|
|
|
.globl lowlevel_init
|
|
lowlevel_init:
|
|
mov r3, r0 /* save skip information */
|
|
|
|
/* Disable watchdog */
|
|
ldr r0, =WD2_BASE
|
|
ldr r1, =WD_UNLOCK1
|
|
str r1, [r0, #WSPR]
|
|
|
|
ldr r1, =WD_UNLOCK2
|
|
str r1, [r0, #WSPR]
|
|
|
|
#ifdef DEBUG_LED
|
|
/* LED0 OFF */
|
|
ldr r0, =0x480000E5 /* ball AA10, mode 3 */
|
|
mov r1, #0x0b
|
|
strb r1, [r0]
|
|
#endif
|
|
|
|
/* Pin muxing for SDRC */
|
|
mov r1, #0x00
|
|
ldr r0, =0x480000A1 /* ball C12, mode 0 */
|
|
strb r1, [r0]
|
|
|
|
ldr r0, =0x48000032 /* ball D11, mode 0 */
|
|
strb r1, [r0]
|
|
|
|
ldr r0, =0x480000A3 /* ball B13, mode 0 */
|
|
strb r1, [r0]
|
|
|
|
/* SDRC setting */
|
|
ldr r0, =OMAP2420_SDRC_BASE
|
|
ldr r1, =0x00000010
|
|
str r1, [r0, #0x10]
|
|
|
|
ldr r1, =0x00000100
|
|
str r1, [r0, #0x44]
|
|
|
|
/* SDRC CS0 configuration */
|
|
#ifdef CONFIG_APOLLON_PLUS
|
|
ldr r1, =0x01702011
|
|
#else
|
|
ldr r1, =0x00d04011
|
|
#endif
|
|
str r1, [r0, #0x80]
|
|
|
|
ldr r1, =SDRC_ACTIM_CTRLA_0_VAL
|
|
str r1, [r0, #0x9C]
|
|
|
|
ldr r1, =SDRC_ACTIM_CTRLB_0_VAL
|
|
str r1, [r0, #0xA0]
|
|
|
|
ldr r1, =SDRC_RFR_CTRL_0_VAL
|
|
str r1, [r0, #0xA4]
|
|
|
|
ldr r1, =0x00000041
|
|
str r1, [r0, #0x70]
|
|
|
|
/* Manual command sequence */
|
|
ldr r1, =0x00000007
|
|
str r1, [r0, #0xA8]
|
|
|
|
ldr r1, =0x00000000
|
|
str r1, [r0, #0xA8]
|
|
|
|
ldr r1, =0x00000001
|
|
str r1, [r0, #0xA8]
|
|
|
|
ldr r1, =0x00000002
|
|
str r1, [r0, #0xA8]
|
|
str r1, [r0, #0xA8]
|
|
|
|
/*
|
|
* CS0 SDRC Mode register
|
|
* Burst length = 4 - DDR memory
|
|
* Serial mode
|
|
* CAS latency = 3
|
|
*/
|
|
ldr r1, =0x00000032
|
|
str r1, [r0, #0x84]
|
|
|
|
/* Note: You MUST set EMR values */
|
|
/* EMR1 & EMR2 */
|
|
ldr r1, =0x00000000
|
|
str r1, [r0, #0x88]
|
|
str r1, [r0, #0x8C]
|
|
|
|
#ifdef OLD_SDRC_DLLA_CTRL
|
|
/* SDRC_DLLA_CTRL */
|
|
ldr r1, =0x00007306
|
|
str r1, [r0, #0x60]
|
|
|
|
ldr r1, =0x00007303
|
|
str r1, [r0, #0x60]
|
|
#else
|
|
/* SDRC_DLLA_CTRL */
|
|
ldr r1, =0x00000506
|
|
str r1, [r0, #0x60]
|
|
|
|
ldr r1, =0x00000503
|
|
str r1, [r0, #0x60]
|
|
#endif
|
|
|
|
#ifdef __BROKEN_FEATURE__
|
|
/* SDRC_DLLB_CTRL */
|
|
ldr r1, =0x00000506
|
|
str r1, [r0, #0x68]
|
|
|
|
ldr r1, =0x00000503
|
|
str r1, [r0, #0x68]
|
|
#endif
|
|
|
|
/* little delay after init */
|
|
mov r2, #0x1800
|
|
1:
|
|
subs r2, r2, #0x1
|
|
bne 1b
|
|
|
|
ldr sp, SRAM_STACK
|
|
str ip, [sp] /* stash old link register */
|
|
mov ip, lr /* save link reg across call */
|
|
mov r0, r3 /* pass skip info to s_init */
|
|
|
|
bl s_init /* go setup pll,mux,memory */
|
|
|
|
ldr ip, [sp] /* restore save ip */
|
|
mov lr, ip /* restore link reg */
|
|
|
|
/* back to arch calling code */
|
|
mov pc, lr
|
|
|
|
/* the literal pools origin */
|
|
.ltorg
|
|
|
|
SRAM_STACK:
|
|
.word LOW_LEVEL_SRAM_STACK
|