mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 12:45:42 +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>
143 lines
3.7 KiB
ArmAsm
143 lines
3.7 KiB
ArmAsm
/*
|
|
modified from SH-IPL+g
|
|
Renesaso SuperH / Solution Enginge MS775xSE01 BSC setting.
|
|
|
|
Support CPU : SH7750/SH7750S/SH7750R/SH7751/SH7751R
|
|
|
|
Coyright (c) 2007 Nobuhiro Iwamatsu <iwmatsu@nigauri.org>
|
|
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <version.h>
|
|
|
|
#include <asm/processor.h>
|
|
#include <asm/macro.h>
|
|
|
|
#ifdef CONFIG_CPU_SH7751
|
|
#define BCR2_D_VALUE 0x2FFC /* Area 1-6 width: 32/32/32/32/32/16 */
|
|
#define WCR1_D_VALUE 0x02770771 /* DMA:0 A6:2 A3:0 A0:1 Others:15 */
|
|
#ifdef CONFIG_MARUBUN_PCCARD
|
|
#define WCR2_D_VALUE 0xFFFE4FE7 /* A6:15 A6B:7 A5:15 A5B:7 A4:15
|
|
A3:2 A2:15 A1:15 A0:6 A0B:7 */
|
|
#else /* CONFIG_MARUBUN_PCCARD */
|
|
#define WCR2_D_VALUE 0x7FFE4FE7 /* A6:3 A6B:7 A5:15 A5B:7 A4:15
|
|
A3:2 A2:15 A1:15 A0:6 A0B:7 */
|
|
#endif /* CONFIG_MARUBUN_PCCARD */
|
|
#define WCR3_D_VALUE 0x01777771 /* A6: 0-1 A5: 1-3 A4: 1-3 A3: 1-3
|
|
A2: 1-3 A1: 1-3 A0: 0-1 */
|
|
#define RTCOR_D_VALUE 0xA50D /* Write code A5, data 0D (~15us?) */
|
|
#define SDMR3_ADDRESS 0xFF940088 /* SDMR3 address on 32-bit bus */
|
|
#define MCR_D1_VALUE 0x100901B4 /* SDRAM 32-bit, CAS/RAS Refresh, .. */
|
|
#define MCR_D2_VALUE 0x500901B4 /* Same w/MRSET now 1 (mode reg cmd) */
|
|
#else /* CONFIG_CPU_SH7751 */
|
|
#define BCR2_D_VALUE 0x2E3C /* Area 1-6 width: 32/32/64/16/32/16 */
|
|
#define WCR1_D_VALUE 0x02720777 /* DMA:0 A6:2 A4:2 A3:0 Others:15 */
|
|
#define WCR2_D_VALUE 0xFFFE4FFF /* A6:15 A6B:7 A5:15 A5B:7 A4:15
|
|
A3:2 A2:15 A1:15 A0:15 A0B:7 */
|
|
#define WCR3_D_VALUE 0x01717771 /* A6: 0-1 A5: 1-3 A4: 0-1 A3: 1-3
|
|
A2: 1-3 A1: 1-3 A0: 0-1 */
|
|
#define RTCOR_D_VALUE 0xA510 /* Write code A5, data 10 (~15us?) */
|
|
#define SDMR3_ADDRESS 0xFF940110 /* SDMR3 address on 64-bit bus */
|
|
#define MCR_D1_VALUE 0x8801001C /* SDRAM 64-bit, CAS/RAS Refresh, .. */
|
|
#define MCR_D2_VALUE 0xC801001C /* Same w/MRSET now 1 (mode reg cmd) */
|
|
#endif /* CONFIG_CPU_SH7751 */
|
|
|
|
.global lowlevel_init
|
|
.text
|
|
.align 2
|
|
|
|
lowlevel_init:
|
|
|
|
write32 CCR_A, CCR_D_DISABLE
|
|
|
|
init_bsc:
|
|
write16 FRQCR_A, FRQCR_D
|
|
|
|
write32 BCR1_A, BCR1_D
|
|
|
|
write16 BCR2_A, BCR2_D
|
|
|
|
write32 WCR1_A, WCR1_D
|
|
|
|
write32 WCR2_A, WCR2_D
|
|
|
|
write32 WCR3_A, WCR3_D
|
|
|
|
write32 MCR_A, MCR_D1
|
|
|
|
/* Set SDRAM mode */
|
|
write8 SDMR3_A, SDMR3_D
|
|
|
|
! Do you need PCMCIA setting?
|
|
! If so, please add the lines here...
|
|
|
|
write16 RTCNT_A, RTCNT_D
|
|
|
|
write16 RTCOR_A, RTCOR_D
|
|
|
|
write16 RTCSR_A, RTCSR_D
|
|
|
|
write16 RFCR_A, RFCR_D
|
|
|
|
/* Wait DRAM refresh 30 times */
|
|
mov #30, r3
|
|
1:
|
|
mov.w @r1, r0
|
|
extu.w r0, r2
|
|
cmp/hi r3, r2
|
|
bf 1b
|
|
|
|
write32 MCR_A, MCR_D2
|
|
|
|
/* Set SDRAM mode */
|
|
write8 SDMR3_A, SDMR3_D
|
|
|
|
rts
|
|
nop
|
|
|
|
.align 2
|
|
|
|
CCR_A: .long CCR
|
|
CCR_D_DISABLE: .long 0x0808
|
|
FRQCR_A: .long FRQCR
|
|
FRQCR_D:
|
|
#ifdef CONFIG_CPU_TYPE_R
|
|
.word 0x0e1a /* 12:3:3 */
|
|
#else /* CONFIG_CPU_TYPE_R */
|
|
#ifdef CONFIG_GOOD_SESH4
|
|
.word 0x00e13 /* 6:2:1 */
|
|
#else
|
|
.word 0x00e23 /* 6:1:1 */
|
|
#endif
|
|
.align 2
|
|
#endif /* CONFIG_CPU_TYPE_R */
|
|
|
|
BCR1_A: .long BCR1
|
|
BCR1_D: .long 0x00000008 /* Area 3 SDRAM */
|
|
BCR2_A: .long BCR2
|
|
BCR2_D: .long BCR2_D_VALUE /* Bus width settings */
|
|
WCR1_A: .long WCR1
|
|
WCR1_D: .long WCR1_D_VALUE /* Inter-area or turnaround wait states */
|
|
WCR2_A: .long WCR2
|
|
WCR2_D: .long WCR2_D_VALUE /* Per-area access and burst wait states */
|
|
WCR3_A: .long WCR3
|
|
WCR3_D: .long WCR3_D_VALUE /* Address setup and data hold cycles */
|
|
RTCSR_A: .long RTCSR
|
|
RTCSR_D: .word 0xA518 /* RTCSR Write Code A5h Data 18h */
|
|
.align 2
|
|
RTCNT_A: .long RTCNT
|
|
RTCNT_D: .word 0xA500 /* RTCNT Write Code A5h Data 00h */
|
|
.align 2
|
|
RTCOR_A: .long RTCOR
|
|
RTCOR_D: .word RTCOR_D_VALUE /* Set refresh time (about 15us) */
|
|
.align 2
|
|
SDMR3_A: .long SDMR3_ADDRESS
|
|
SDMR3_D: .long 0x00
|
|
MCR_A: .long MCR
|
|
MCR_D1: .long MCR_D1_VALUE
|
|
MCR_D2: .long MCR_D2_VALUE
|
|
RFCR_A: .long RFCR
|
|
RFCR_D: .word 0xA400 /* RFCR Write Code A4h Data 00h */
|
|
.align 2
|