1/*
2 * Copyright (C) 2011 Renesas Solutions Corp.
3 * Copyright (C) 2011 Nobuhiro Iwamatsu <nobuhiro.Iwamatsu.yj@renesas.com>
4 *
5 * board/renesas/ecovec/lowlevel_init.S
6 *
7 * SPDX-License-Identifier:	GPL-2.0+
8 */
9
10#include <config.h>
11#include <version.h>
12#include <asm/processor.h>
13#include <asm/macro.h>
14#include <configs/ecovec.h>
15
16	.global	lowlevel_init
17
18	.text
19	.align	2
20
21lowlevel_init:
22
23	/* jump to 0xA0020000 if bit 1 of PVDR_A */
24	mov.l	PVDR_A, r1
25	mov.l	PVDR_D, r2
26	mov.b	@r1, r0
27	tst	r0, r2
28	bt	1f
29	mov.l	JUMP_A, r1
30	jmp	@r1
31	nop
32
331:
34	/* Disable watchdog */
35	write16 RWTCSR_A, RWTCSR_D
36
37	/* MMU Disable */
38	write32 MMUCR_A, MMUCR_D
39
40	/* Setup clocks */
41	write32 PLLCR_A, PLLCR_D
42	write32 FRQCRA_A, FRQCRA_D
43	write32 FRQCRB_A, FRQCRB_D
44
45	wait_timer TIMER_D
46
47	write32 MMSELR_A, MMSELR_D
48
49	/* Srtup BSC */
50	write32 CMNCR_A, CMNCR_D
51	write32 CS0BCR_A, CS0BCR_D
52	write32 CS0WCR_A, CS0WCR_D
53
54	wait_timer TIMER_D
55
56	/* Setup SDRAM */
57	write32 DBPDCNT0_A,	DBPDCNT0_D0
58	write32 DBCONF_A,	DBCONF_D
59	write32 DBTR0_A,	DBTR0_D
60	write32 DBTR1_A,	DBTR1_D
61	write32 DBTR2_A,	DBTR2_D
62	write32 DBTR3_A,	DBTR3_D
63	write32 DBKIND_A,	DBKIND_D
64	write32 DBCKECNT_A,	DBCKECNT_D
65
66	wait_timer TIMER_D
67
68	write32 DBCMDCNT_A,	DBCMDCNT_D0
69	write32 DBMRCNT_A, DBMRCNT_D0
70	write32 DBMRCNT_A, DBMRCNT_D1
71	write32 DBMRCNT_A, DBMRCNT_D2
72	write32 DBMRCNT_A, DBMRCNT_D3
73	write32 DBCMDCNT_A, DBCMDCNT_D0
74	write32 DBCMDCNT_A, DBCMDCNT_D1
75	write32 DBCMDCNT_A, DBCMDCNT_D1
76	write32 DBMRCNT_A, DBMRCNT_D4
77	write32 DBMRCNT_A, DBMRCNT_D5
78	write32 DBMRCNT_A, DBMRCNT_D6
79
80	wait_timer TIMER_D
81
82	write32 DBEN_A, DBEN_D
83	write32 DBRFPDN1_A, DBRFPDN1_D
84	write32 DBRFPDN2_A, DBRFPDN2_D
85	write32 DBCMDCNT_A, DBCMDCNT_D0
86
87
88	/* Dummy read */
89	mov.l DUMMY_A ,r1
90	synco
91	mov.l @r1, r0
92	synco
93
94	mov.l SDRAM_A ,r1
95	synco
96	mov.l @r1, r0
97	synco
98	wait_timer TIMER_D
99
100	add #4, r1
101	synco
102	mov.l @r1, r0
103	synco
104	wait_timer TIMER_D
105
106	add #4, r1
107	synco
108	mov.l @r1, r0
109	synco
110	wait_timer TIMER_D
111
112	add #4, r1
113	synco
114	mov.l @r1, r0
115	synco
116	wait_timer TIMER_D
117
118	write32 DBCMDCNT_A, DBCMDCNT_D0
119	write32 DBCMDCNT_A, DBCMDCNT_D1
120	write32 DBPDCNT0_A, DBPDCNT0_D1
121	write32 DBRFPDN0_A, DBRFPDN0_D
122
123	wait_timer TIMER_D
124
125	write32 CCR_A, CCR_D
126
127	stc	sr, r0
128	mov.l	SR_MASK_D, r1
129	and	r1, r0
130	ldc	r0, sr
131
132	rts
133
134	.align	2
135
136PVDR_A:		.long	PVDR
137PVDR_D:		.long	0x00000001
138JUMP_A:		.long	CONFIG_ECOVEC_ROMIMAGE_ADDR
139TIMER_D:	.long	64
140RWTCSR_A:	.long	RWTCSR
141RWTCSR_D:	.long	0x0000A507
142MMUCR_A:	.long	MMUCR
143MMUCR_D:	.long	0x00000004
144PLLCR_A:	.long	PLLCR
145PLLCR_D:	.long	0x00004000
146FRQCRA_A:	.long	FRQCRA
147FRQCRA_D:	.long	0x8E003508
148FRQCRB_A:	.long	FRQCRB
149FRQCRB_D:	.long	0x0
150MMSELR_A:	.long	MMSELR
151MMSELR_D:	.long	0xA5A50000
152CMNCR_A:	.long	CMNCR
153CMNCR_D:	.long	0x00000013
154CS0BCR_A:	.long	CS0BCR
155CS0BCR_D:	.long	0x11110400
156CS0WCR_A:	.long	CS0WCR
157CS0WCR_D:	.long	0x00000440
158DBPDCNT0_A:	.long	DBPDCNT0
159DBPDCNT0_D0: .long	0x00000181
160DBPDCNT0_D1: .long	0x00000080
161DBCONF_A:	.long	DBCONF
162DBCONF_D:	.long	0x015B0002
163DBTR0_A:	.long 	DBTR0
164DBTR0_D:	.long 	0x03061502
165DBTR1_A:	.long	DBTR1
166DBTR1_D:	.long	0x02020102
167DBTR2_A:	.long	DBTR2
168DBTR2_D:	.long	0x01090305
169DBTR3_A:	.long	DBTR3
170DBTR3_D:	.long	0x00000002
171DBKIND_A:	.long	DBKIND
172DBKIND_D:	.long	0x00000005
173DBCKECNT_A:	.long	DBCKECNT
174DBCKECNT_D:	.long	0x00000001
175DBCMDCNT_A:	.long	DBCMDCNT
176DBCMDCNT_D0:.long	0x2
177DBCMDCNT_D1:.long	0x4
178DBMRCNT_A:	.long	DBMRCNT
179DBMRCNT_D0:	.long	0x00020000
180DBMRCNT_D1:	.long	0x00030000
181DBMRCNT_D2:	.long	0x00010040
182DBMRCNT_D3:	.long	0x00000532
183DBMRCNT_D4:	.long	0x00000432
184DBMRCNT_D5:	.long	0x000103C0
185DBMRCNT_D6:	.long	0x00010040
186DBEN_A:		.long	DBEN
187DBEN_D:		.long	0x01
188DBRFPDN0_A:	.long	DBRFPDN0
189DBRFPDN1_A:	.long	DBRFPDN1
190DBRFPDN2_A:	.long	DBRFPDN2
191DBRFPDN0_D:	.long	0x00010000
192DBRFPDN1_D:	.long	0x00000613
193DBRFPDN2_D:	.long	0x238C003A
194SDRAM_A:	.long	0xa8000000
195DUMMY_A:	.long	0x0c400000
196CCR_A:		.long	CCR
197CCR_D:		.long	0x0000090B
198SR_MASK_D:	.long	0xEFFFFF0F
199