mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 14:40:41 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
181 lines
3.7 KiB
ArmAsm
181 lines
3.7 KiB
ArmAsm
/*
|
|
* Originates from Samsung's u-boot 1.1.6 port to S5PC1xx
|
|
*
|
|
* Copyright (C) 2009 Samsung Electrnoics
|
|
* Inki Dae <inki.dae@samsung.com>
|
|
* Heungjun Kim <riverful.kim@samsung.com>
|
|
* Minkyu Kang <mk7.kang@samsung.com>
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
.globl mem_ctrl_asm_init
|
|
mem_ctrl_asm_init:
|
|
ldr r6, =S5PC100_DMC_BASE @ 0xE6000000
|
|
|
|
/* DLL parameter setting */
|
|
ldr r1, =0x50101000
|
|
str r1, [r6, #0x018] @ PHYCONTROL0
|
|
ldr r1, =0xf4
|
|
str r1, [r6, #0x01C] @ PHYCONTROL1
|
|
ldr r1, =0x0
|
|
str r1, [r6, #0x020] @ PHYCONTROL2
|
|
|
|
/* DLL on */
|
|
ldr r1, =0x50101002
|
|
str r1, [r6, #0x018] @ PHYCONTROL0
|
|
|
|
/* DLL start */
|
|
ldr r1, =0x50101003
|
|
str r1, [r6, #0x018] @ PHYCONTROL0
|
|
|
|
/* Force value locking for DLL off */
|
|
str r1, [r6, #0x018] @ PHYCONTROL0
|
|
|
|
/* DLL off */
|
|
ldr r1, =0x50101001
|
|
str r1, [r6, #0x018] @ PHYCONTROL0
|
|
|
|
/* auto refresh off */
|
|
ldr r1, =0xff001010
|
|
str r1, [r6, #0x000] @ CONCONTROL
|
|
|
|
/*
|
|
* Burst Length 4, 2 chips, 32-bit, LPDDR
|
|
* OFF: dynamic self refresh, force precharge, dynamic power down off
|
|
*/
|
|
ldr r1, =0x00212100
|
|
str r1, [r6, #0x004] @ MEMCONTROL
|
|
|
|
/*
|
|
* Note:
|
|
* If Bank0 has OneDRAM we place it at 0x2800'0000
|
|
* So finally Bank1 should address start at at 0x2000'0000
|
|
*/
|
|
mov r4, #0x0
|
|
|
|
swap_memory:
|
|
/*
|
|
* Bank0
|
|
* 0x30 -> 0x30000000
|
|
* 0xf8 -> 0x37FFFFFF
|
|
* [15:12] 0: Linear
|
|
* [11:8 ] 2: 9 bits
|
|
* [ 7:4 ] 2: 14 bits
|
|
* [ 3:0 ] 2: 4 banks
|
|
*/
|
|
ldr r1, =0x30f80222
|
|
/* if r4 is 1, swap the bank */
|
|
cmp r4, #0x1
|
|
orreq r1, r1, #0x08000000
|
|
str r1, [r6, #0x008] @ MEMCONFIG0
|
|
|
|
/*
|
|
* Bank1
|
|
* 0x38 -> 0x38000000
|
|
* 0xf8 -> 0x3fFFFFFF
|
|
* [15:12] 0: Linear
|
|
* [11:8 ] 2: 9 bits
|
|
* [ 7:4 ] 2: 14 bits
|
|
* [ 3:0 ] 2: 4 banks
|
|
*/
|
|
ldr r1, =0x38f80222
|
|
/* if r4 is 1, swap the bank */
|
|
cmp r4, #0x1
|
|
biceq r1, r1, #0x08000000
|
|
str r1, [r6, #0x00c] @ MEMCONFIG1
|
|
|
|
ldr r1, =0x20000000
|
|
str r1, [r6, #0x014] @ PRECHCONFIG
|
|
|
|
/*
|
|
* FIXME: Please verify these values
|
|
* 7.8us * 166MHz %LE %LONG1294(0x50E)
|
|
* 7.8us * 133MHz %LE %LONG1038(0x40E),
|
|
* 7.8us * 100MHz %LE %LONG780(0x30C),
|
|
* 7.8us * 20MHz %LE %LONG156(0x9C),
|
|
* 7.8us * 10MHz %LE %LONG78(0x4E)
|
|
*/
|
|
ldr r1, =0x0000050e
|
|
str r1, [r6, #0x030] @ TIMINGAREF
|
|
|
|
/* 166 MHz */
|
|
ldr r1, =0x0c233287
|
|
str r1, [r6, #0x034] @ TIMINGROW
|
|
|
|
/* twtr=3 twr=2 trtp=3 cl=3 wl=3 rl=3 */
|
|
ldr r1, =0x32330303
|
|
str r1, [r6, #0x038] @ TIMINGDATA
|
|
|
|
/* tfaw=4 sxsr=0x14 txp=0x14 tcke=3 tmrd=3 */
|
|
ldr r1, =0x04141433
|
|
str r1, [r6, #0x03C] @ TIMINGPOWER
|
|
|
|
/* chip0 Deselect */
|
|
ldr r1, =0x07000000
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* chip0 PALL */
|
|
ldr r1, =0x01000000
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* chip0 REFA */
|
|
ldr r1, =0x05000000
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
/* chip0 REFA */
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* chip0 MRS, CL%LE %LONG3, BL%LE %LONG4 */
|
|
ldr r1, =0x00000032
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* chip1 Deselect */
|
|
ldr r1, =0x07100000
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* chip1 PALL */
|
|
ldr r1, =0x01100000
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* chip1 REFA */
|
|
ldr r1, =0x05100000
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
/* chip1 REFA */
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* chip1 MRS, CL%LE %LONG3, BL%LE %LONG4 */
|
|
ldr r1, =0x00100032
|
|
str r1, [r6, #0x010] @ DIRECTCMD
|
|
|
|
/* auto refresh on */
|
|
ldr r1, =0xff002030
|
|
str r1, [r6, #0x000] @ CONCONTROL
|
|
|
|
/* PwrdnConfig */
|
|
ldr r1, =0x00100002
|
|
str r1, [r6, #0x028] @ PWRDNCONFIG
|
|
|
|
/* BL%LE %LONG */
|
|
ldr r1, =0xff212100
|
|
str r1, [r6, #0x004] @ MEMCONTROL
|
|
|
|
|
|
/* Try to test memory area */
|
|
cmp r4, #0x1
|
|
beq 1f
|
|
|
|
mov r4, #0x1
|
|
ldr r1, =0x37ffff00
|
|
str r4, [r1]
|
|
str r4, [r1, #0x4] @ dummy write
|
|
ldr r0, [r1]
|
|
cmp r0, r4
|
|
bne swap_memory
|
|
|
|
1:
|
|
mov pc, lr
|
|
|
|
.ltorg
|