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Heiko Schocher2605e902007-02-16 07:57:42 +01001/*
2 * (C) Copyright 2007
3 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
4 *
5 * (C) Copyright 2004
6 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
7 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
Heiko Schocher2605e902007-02-16 07:57:42 +01009 */
10
11#include <common.h>
12#include <mpc5xxx.h>
13#include <pci.h>
14#include <asm/processor.h>
Grant Likelycf2817a2007-09-06 09:46:23 -060015#include <libfdt.h>
Heiko Schocher2605e902007-02-16 07:57:42 +010016
17#define SDRAM_DDR 0
18#if 1
19/* Settings Icecube */
20#define SDRAM_MODE 0x00CD0000
21#define SDRAM_CONTROL 0x504F0000
22#define SDRAM_CONFIG1 0xD2322800
23#define SDRAM_CONFIG2 0x8AD70000
24#else
25/*Settings Jupiter UB 1.0.0 */
26#define SDRAM_MODE 0x008D0000
27#define SDRAM_CONTROL 0xD04F0000
28#define SDRAM_CONFIG1 0xf7277f00
29#define SDRAM_CONFIG2 0x88b70004
30#endif
31
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020032#ifndef CONFIG_SYS_RAMBOOT
Heiko Schocher2605e902007-02-16 07:57:42 +010033static void sdram_start (int hi_addr)
34{
35 long hi_addr_bit = hi_addr ? 0x01000000 : 0;
36
37 /* unlock mode register */
38 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
39 __asm__ volatile ("sync");
40
41 /* precharge all banks */
42 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
43 __asm__ volatile ("sync");
44
45#if SDRAM_DDR
46 /* set mode register: extended mode */
47 *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
48 __asm__ volatile ("sync");
49
50 /* set mode register: reset DLL */
51 *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
52 __asm__ volatile ("sync");
53#endif
54
55 /* precharge all banks */
56 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
57 __asm__ volatile ("sync");
58
59 /* auto refresh */
60 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
61 __asm__ volatile ("sync");
62
63 /* set mode register */
64 *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
65 __asm__ volatile ("sync");
66
67 /* normal operation */
68 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
69 __asm__ volatile ("sync");
70}
71#endif
72
73/*
74 * ATTENTION: Although partially referenced initdram does NOT make real use
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020075 * use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
Heiko Schocher2605e902007-02-16 07:57:42 +010076 * is something else than 0x00000000.
77 */
78
Becky Bruce9973e3c2008-06-09 16:03:40 -050079phys_size_t initdram (int board_type)
Heiko Schocher2605e902007-02-16 07:57:42 +010080{
81 ulong dramsize = 0;
82 ulong dramsize2 = 0;
83 uint svr, pvr;
84
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020085#ifndef CONFIG_SYS_RAMBOOT
Heiko Schocher2605e902007-02-16 07:57:42 +010086 ulong test1, test2;
87
88 /* setup SDRAM chip selects */
89 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
90 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
91 __asm__ volatile ("sync");
92
93 /* setup config registers */
94 *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
95 *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
96 __asm__ volatile ("sync");
97
98#if SDRAM_DDR
99 /* set tap delay */
100 *(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
101 __asm__ volatile ("sync");
102#endif
103
104 /* find RAM size using SDRAM CS0 only */
105 sdram_start(0);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200106 test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
Heiko Schocher2605e902007-02-16 07:57:42 +0100107 sdram_start(1);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200108 test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
Heiko Schocher2605e902007-02-16 07:57:42 +0100109 if (test1 > test2) {
110 sdram_start(0);
111 dramsize = test1;
112 } else {
113 dramsize = test2;
114 }
115
116 /* memory smaller than 1MB is impossible */
117 if (dramsize < (1 << 20)) {
118 dramsize = 0;
119 }
120
121 /* set SDRAM CS0 size according to the amount of RAM found */
122 if (dramsize > 0) {
123 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1;
124 } else {
125 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
126 }
127
128 /* let SDRAM CS1 start right after CS0 */
129 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
130
131 /* find RAM size using SDRAM CS1 only */
132 if (!dramsize)
133 sdram_start(0);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200134 test2 = test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
Heiko Schocher2605e902007-02-16 07:57:42 +0100135 if (!dramsize) {
136 sdram_start(1);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200137 test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
Heiko Schocher2605e902007-02-16 07:57:42 +0100138 }
139 if (test1 > test2) {
140 sdram_start(0);
141 dramsize2 = test1;
142 } else {
143 dramsize2 = test2;
144 }
145
146 /* memory smaller than 1MB is impossible */
147 if (dramsize2 < (1 << 20)) {
148 dramsize2 = 0;
149 }
150
151 /* set SDRAM CS1 size according to the amount of RAM found */
152 if (dramsize2 > 0) {
153 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
154 | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
155 } else {
156 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
157 }
158
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200159#else /* CONFIG_SYS_RAMBOOT */
Heiko Schocher2605e902007-02-16 07:57:42 +0100160
161 /* retrieve size of memory connected to SDRAM CS0 */
162 dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
163 if (dramsize >= 0x13) {
164 dramsize = (1 << (dramsize - 0x13)) << 20;
165 } else {
166 dramsize = 0;
167 }
168
169 /* retrieve size of memory connected to SDRAM CS1 */
170 dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
171 if (dramsize2 >= 0x13) {
172 dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
173 } else {
174 dramsize2 = 0;
175 }
176
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200177#endif /* CONFIG_SYS_RAMBOOT */
Heiko Schocher2605e902007-02-16 07:57:42 +0100178
179 /*
180 * On MPC5200B we need to set the special configuration delay in the
181 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
182 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
183 *
184 * "The SDelay should be written to a value of 0x00000004. It is
185 * required to account for changes caused by normal wafer processing
186 * parameters."
187 */
188 svr = get_svr();
189 pvr = get_pvr();
190 if ((SVR_MJREV(svr) >= 2) &&
191 (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
192
193 *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
194 __asm__ volatile ("sync");
195 }
196
197 return dramsize + dramsize2;
198}
199
200int checkboard (void)
201{
202 puts ("Board: Sauter (Jupiter)\n");
203 return 0;
204}
205
206void flash_preinit(void)
207{
208 /*
209 * Now, when we are in RAM, enable flash write
210 * access for detection process.
211 * Note that CS_BOOT cannot be cleared when
212 * executing in flash.
213 */
Heiko Schocher2605e902007-02-16 07:57:42 +0100214 *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
215}
216
217int board_early_init_r (void)
218{
219 flash_preinit ();
220 return 0;
221}
222
223void flash_afterinit(ulong size)
224{
225 if (size == 0x1000000) { /* adjust mapping */
226 *(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200227 START_REG(CONFIG_SYS_BOOTCS_START | size);
Heiko Schocher2605e902007-02-16 07:57:42 +0100228 *(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200229 STOP_REG(CONFIG_SYS_BOOTCS_START | size, size);
Heiko Schocher2605e902007-02-16 07:57:42 +0100230 }
Heiko Schocher2605e902007-02-16 07:57:42 +0100231 *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 25); /* disable CS_BOOT */
232 *(vu_long *)MPC5XXX_ADDECR |= (1 << 16); /* enable CS0 */
Heiko Schocher2605e902007-02-16 07:57:42 +0100233}
234
235int update_flash_size (int flash_size)
236{
237 flash_afterinit (flash_size);
238 return 0;
239}
240
241int board_early_init_f (void)
242{
243 *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
244 return 0;
245}
246
247#ifdef CONFIG_PCI
248static struct pci_controller hose;
249
250extern void pci_mpc5xxx_init(struct pci_controller *);
251
252void pci_init_board(void)
253{
254 pci_mpc5xxx_init(&hose);
255}
256#endif
257
Jon Loeligerd39b5742007-07-10 10:48:22 -0500258#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
Heiko Schocher2605e902007-02-16 07:57:42 +0100259
260void init_ide_reset (void)
261{
262 debug ("init_ide_reset\n");
263
264 /* Configure PSC1_4 as GPIO output for ATA reset */
265 *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
266 *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
267 /* Deassert reset */
268 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
269}
270
271void ide_set_reset (int idereset)
272{
273 debug ("ide_reset(%d)\n", idereset);
274
275 if (idereset) {
276 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
277 /* Make a delay. MPC5200 spec says 25 usec min */
278 udelay(500000);
279 } else {
280 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
281 }
282}
Jon Loeligerd39b5742007-07-10 10:48:22 -0500283#endif
Heiko Schocher2605e902007-02-16 07:57:42 +0100284
Grant Likelycf2817a2007-09-06 09:46:23 -0600285#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
Heiko Schocher2605e902007-02-16 07:57:42 +0100286void
287ft_board_setup(void *blob, bd_t *bd)
288{
289 ft_cpu_setup(blob, bd);
290}
291#endif