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/*
* Copyright (C) 2009 Samsung Electrnoics
* Minkyu Kang <mk7.kang@samsung.com>
* Kyungmin Park <kyungmin.park@samsung.com>
*
* 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>
.globl mem_ctrl_asm_init
mem_ctrl_asm_init:
cmp r7, r8
ldreq r0, =S5PC100_DMC_BASE @ 0xE6000000
ldrne r0, =S5PC110_DMC0_BASE @ 0xF0000000
ldrne r6, =S5PC110_DMC1_BASE @ 0xF1400000
/* DLL parameter setting */
ldr r1, =0x50101000
str r1, [r0, #0x018] @ PHYCONTROL0_OFFSET
strne r1, [r6, #0x018] @ PHYCONTROL0_OFFSET
ldr r1, =0x000000f4
str r1, [r0, #0x01C] @ PHYCONTROL1_OFFSET
strne r1, [r6, #0x01C] @ PHYCONTROL1_OFFSET
ldreq r1, =0x0
streq r1, [r0, #0x020] @ PHYCONTROL2_OFFSET
/* DLL on */
ldr r1, =0x50101002
str r1, [r0, #0x018] @ PHYCONTROL0_OFFSET
strne r1, [r6, #0x018] @ PHYCONTROL0_OFFSET
/* DLL start */
ldr r1, =0x50101003
str r1, [r0, #0x018] @ PHYCONTROL0_OFFSET
strne r1, [r6, #0x018] @ PHYCONTROL0_OFFSET
mov r2, #0x4000
wait: subs r2, r2, #0x1
cmp r2, #0x0
bne wait
cmp r7, r8
/* Force value locking for DLL off */
str r1, [r0, #0x018] @ PHYCONTROL0_OFFSET
strne r1, [r6, #0x018] @ PHYCONTROL0_OFFSET
/* DLL off */
ldr r1, =0x50101009
str r1, [r0, #0x018] @ PHYCONTROL0_OFFSET
strne r1, [r6, #0x018] @ PHYCONTROL0_OFFSET
/* auto refresh off */
ldr r1, =0xff001010 | (1 << 7)
ldr r2, =0xff001010 | (1 << 7)
str r1, [r0, #0x000] @ CONCONTROL_OFFSET
strne r2, [r6, #0x000] @ CONCONTROL_OFFSET
/*
* Burst Length 4, 2 chips, 32-bit, LPDDR
* OFF: dynamic self refresh, force precharge, dynamic power down off
*/
ldr r1, =0x00212100
ldr r2, =0x00212100
str r1, [r0, #0x004] @ MEMCONTROL_OFFSET
strne r2, [r6, #0x004] @ MEMCONTROL_OFFSET
/*
* Note:
* If Bank0 has Mobile RAM we place it at 0x3800'0000 (s5pc100 only)
* So finally Bank1 OneDRAM should address start at at 0x3000'0000
*/
/*
* DMC0: CS0 : S5PC100/S5PC110
* 0x30 -> 0x30000000
* 0xf8 -> 0x37FFFFFF
* [15:12] 0: Linear
* [11:8 ] 2: 9 bits
* [ 7:4 ] 2: 14 bits
* [ 3:0 ] 2: 4 banks
*/
ldr r3, =0x30f80222
ldr r4, =0x40f00222
swap_memory:
str r3, [r0, #0x008] @ MEMCONFIG0_OFFSET
str r4, [r0, #0x00C] @ dummy write
/*
* DMC1: CS0 : S5PC110
* 0x40 -> 0x40000000
* 0xf8 -> 0x47FFFFFF (1Gib)
* 0x40 -> 0x40000000
* 0xf0 -> 0x4FFFFFFF (2Gib)
* [15:12] 0: Linear
* [11:8 ] 2: 9 bits - Col (1Gib)
* [11:8 ] 3: 10 bits - Col (2Gib)
* [ 7:4 ] 2: 14 bits - Row
* [ 3:0 ] 2: 4 banks
*/
/* Default : 2GiB */
ldr r4, =0x40f01322 @ 2Gib: MCP B
ldr r5, =0x50f81312 @ dummy: MCP D
cmp r9, #1
ldreq r4, =0x40f81222 @ 1Gib: MCP A
cmp r9, #3
ldreq r5, =0x50f81312 @ 2Gib + 1Gib: MCP D
cmp r9, #4
ldreq r5, =0x50f01312 @ 2Gib + 2Gib: MCP E
cmp r7, r8
strne r4, [r6, #0x008] @ MEMCONFIG0_OFFSET
strne r5, [r6, #0x00C] @ MEMCONFIG1_OFFSET
/*
* DMC0: CS1: S5PC100
* 0x38 -> 0x38000000
* 0xf8 -> 0x3fFFFFFF
* [15:12] 0: Linear
* [11:8 ] 2: 9 bits
* [ 7:4 ] 2: 14 bits
* [ 3:0 ] 2: 4 banks
*/
eoreq r3, r3, #0x08000000
streq r3, [r0, #0xc] @ MEMCONFIG1_OFFSET
ldr r1, =0x20000000
str r1, [r0, #0x014] @ PRECHCONFIG_OFFSET
strne r1, [r0, #0x014] @ PRECHCONFIG_OFFSET
strne r1, [r6, #0x014] @ PRECHCONFIG_OFFSET
/*
* S5PC100:
* DMC: CS0: 166MHz
* CS1: 166MHz
* S5PC110:
* DMC0: CS0: 166MHz
* DMC1: CS0: 200MHz
*
* 7.8us * 200MHz %LE %LONG1560(0x618)
* 7.8us * 166MHz %LE %LONG1294(0x50E)
* 7.8us * 133MHz %LE %LONG1038(0x40E),
* 7.8us * 100MHz %LE %LONG780(0x30C),
*/
ldr r1, =0x0000050E
str r1, [r0, #0x030] @ TIMINGAREF_OFFSET
ldrne r1, =0x00000618
strne r1, [r6, #0x030] @ TIMINGAREF_OFFSET
ldr r1, =0x14233287
str r1, [r0, #0x034] @ TIMINGROW_OFFSET
ldrne r1, =0x182332c8
strne r1, [r6, #0x034] @ TIMINGROW_OFFSET
ldr r1, =0x12130005
str r1, [r0, #0x038] @ TIMINGDATA_OFFSET
ldrne r1, =0x13130005
strne r1, [r6, #0x038] @ TIMINGDATA_OFFSET
ldr r1, =0x0E140222
str r1, [r0, #0x03C] @ TIMINGPOWER_OFFSET
ldrne r1, =0x0E180222
strne r1, [r6, #0x03C] @ TIMINGPOWER_OFFSET
/* chip0 Deselect */
ldr r1, =0x07000000
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip0 PALL */
ldr r1, =0x01000000
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip0 REFA */
ldr r1, =0x05000000
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip0 REFA */
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip0 MRS */
ldr r1, =0x00000032
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip0 EMRS */
ldr r1, =0x00020020
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip1 Deselect */
ldr r1, =0x07100000
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip1 PALL */
ldr r1, =0x01100000
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip1 REFA */
ldr r1, =0x05100000
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip1 REFA */
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip1 MRS */
ldr r1, =0x00100032
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* chip1 EMRS */
ldr r1, =0x00120020
str r1, [r0, #0x010] @ DIRECTCMD_OFFSET
strne r1, [r6, #0x010] @ DIRECTCMD_OFFSET
/* auto refresh on */
ldr r1, =0xFF002030 | (1 << 7)
str r1, [r0, #0x000] @ CONCONTROL_OFFSET
strne r1, [r6, #0x000] @ CONCONTROL_OFFSET
/* PwrdnConfig */
ldr r1, =0x00100002
str r1, [r0, #0x028] @ PWRDNCONFIG_OFFSET
strne r1, [r6, #0x028] @ PWRDNCONFIG_OFFSET
ldr r1, =0x00212113
str r1, [r0, #0x004] @ MEMCONTROL_OFFSET
strne r1, [r6, #0x004] @ MEMCONTROL_OFFSET
/* Skip when S5PC110 */
bne 1f
/* Check OneDRAM access area at s5pc100 */
ldreq r3, =0x38f80222
ldreq r1, =0x37ffff00
str r3, [r1]
ldr r2, [r1]
cmp r2, r3
beq swap_memory
1:
mov pc, lr
.ltorg
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