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Stefan Roese8b7d1f02007-01-31 16:37:34 +01001/*
2 * (C) Copyright 2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2004
6 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27/*
28 * pf5200.c - main board support/init for the esd pf5200.
29 */
30
31#include <common.h>
32#include <mpc5xxx.h>
33#include <pci.h>
34#include <command.h>
35
36#include "mt46v16m16-75.h"
37
38void init_power_switch(void);
39
40static void sdram_start(int hi_addr)
41{
42 long hi_addr_bit = hi_addr ? 0x01000000 : 0;
43
44 /* unlock mode register */
45 *(vu_long *) MPC5XXX_SDRAM_CTRL =
46 SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
47 __asm__ volatile ("sync");
48
49 /* precharge all banks */
50 *(vu_long *) MPC5XXX_SDRAM_CTRL =
51 SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
52 __asm__ volatile ("sync");
53
54 /* set mode register: extended mode */
55 *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
56 __asm__ volatile ("sync");
57
58 /* set mode register: reset DLL */
59 *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
60 __asm__ volatile ("sync");
61
62 /* precharge all banks */
63 *(vu_long *) MPC5XXX_SDRAM_CTRL =
64 SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
65 __asm__ volatile ("sync");
66
67 /* auto refresh */
68 *(vu_long *) MPC5XXX_SDRAM_CTRL =
69 SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
70 __asm__ volatile ("sync");
71
72 /* set mode register */
73 *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE;
74 __asm__ volatile ("sync");
75
76 /* normal operation */
77 *(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
78 __asm__ volatile ("sync");
79}
80
81/*
82 * ATTENTION: Although partially referenced initdram does NOT make real use
83 * use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
84 * is something else than 0x00000000.
85 */
86
87long int initdram(int board_type)
88{
89 ulong dramsize = 0;
90 ulong test1, test2;
91
92 /* setup SDRAM chip selects */
93 *(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0x0000001e; /* 2G at 0x0 */
94 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x80000000; /* disabled */
95 __asm__ volatile ("sync");
96
97 /* setup config registers */
98 *(vu_long *) MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
99 *(vu_long *) MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
100 __asm__ volatile ("sync");
101
102 /* set tap delay */
103 *(vu_long *) MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
104 __asm__ volatile ("sync");
105
106 /* find RAM size using SDRAM CS0 only */
107 sdram_start(0);
108 test1 = get_ram_size(CFG_SDRAM_BASE, 0x80000000);
109 sdram_start(1);
110 test2 = get_ram_size(CFG_SDRAM_BASE, 0x80000000);
111
112 if (test1 > test2) {
113 sdram_start(0);
114 dramsize = test1;
115 } else {
116 dramsize = test2;
117 }
118
119 /* memory smaller than 1MB is impossible */
120 if (dramsize < (1 << 20))
121 dramsize = 0;
122
123 /* set SDRAM CS0 size according to the amount of RAM found */
124 if (dramsize > 0) {
125 *(vu_long *) MPC5XXX_SDRAM_CS0CFG =
126 0x13 + __builtin_ffs(dramsize >> 20) - 1;
127 /* let SDRAM CS1 start right after CS0 */
128 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e; /* 2G */
129 } else {
130#if 0
131 *(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
132 /* let SDRAM CS1 start right after CS0 */
133 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e; /* 2G */
134#else
135 *(vu_long *) MPC5XXX_SDRAM_CS0CFG =
136 0x13 + __builtin_ffs(0x08000000 >> 20) - 1;
137 /* let SDRAM CS1 start right after CS0 */
138 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x08000000 + 0x0000001e; /* 2G */
139#endif
140 }
141
142#if 0
143 /* find RAM size using SDRAM CS1 only */
144 sdram_start(0);
145 get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
146 sdram_start(1);
147 get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
148 sdram_start(0);
149#endif
150 /* set SDRAM CS1 size according to the amount of RAM found */
151
152 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
153
154 init_power_switch();
155 return (dramsize);
156}
157
158int checkboard(void)
159{
160 puts("Board: esd CPX CPU5200 (mecp5200)\n");
161 return 0;
162}
163
164void flash_preinit(void)
165{
166 /*
167 * Now, when we are in RAM, enable flash write
168 * access for detection process.
169 * Note that CS_BOOT cannot be cleared when
170 * executing in flash.
171 */
172 *(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
173}
174
175void flash_afterinit(ulong size)
176{
177 if (size == CFG_FLASH_SIZE) {
178 /* adjust mapping */
179 *(vu_long *) MPC5XXX_BOOTCS_START =
180 *(vu_long *) MPC5XXX_CS0_START =
181 START_REG(CFG_BOOTCS_START | size);
182 *(vu_long *) MPC5XXX_BOOTCS_STOP =
183 *(vu_long *) MPC5XXX_CS0_STOP =
184 STOP_REG(CFG_BOOTCS_START | size, size);
185 }
186}
187
188#ifdef CONFIG_PCI
189static struct pci_controller hose;
190
191extern void pci_mpc5xxx_init(struct pci_controller *);
192
193void pci_init_board(void)
194{
195 pci_mpc5xxx_init(&hose);
196}
197#endif
198
Jon Loeliger77a31852007-07-10 10:39:10 -0500199#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
Stefan Roese8b7d1f02007-01-31 16:37:34 +0100200
201#define GPIO_PSC1_4 0x01000000UL
202
203void init_ide_reset(void)
204{
205 debug("init_ide_reset\n");
206
207 /* Configure PSC1_4 as GPIO output for ATA reset */
208 *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
209 *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
210}
211
212void ide_set_reset(int idereset)
213{
214 debug("ide_reset(%d)\n", idereset);
215
216 if (idereset)
217 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
218 else
219 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
220}
Jon Loeliger77a31852007-07-10 10:39:10 -0500221#endif
Stefan Roese8b7d1f02007-01-31 16:37:34 +0100222
223#define MPC5XXX_SIMPLEIO_GPIO_ENABLE (MPC5XXX_GPIO + 0x0004)
224#define MPC5XXX_SIMPLEIO_GPIO_DIR (MPC5XXX_GPIO + 0x000C)
225#define MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x0010)
226#define MPC5XXX_SIMPLEIO_GPIO_DATA_INPUT (MPC5XXX_GPIO + 0x0014)
227
228#define MPC5XXX_INTERRUPT_GPIO_ENABLE (MPC5XXX_GPIO + 0x0020)
229#define MPC5XXX_INTERRUPT_GPIO_DIR (MPC5XXX_GPIO + 0x0028)
230#define MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x002C)
231#define MPC5XXX_INTERRUPT_GPIO_STATUS (MPC5XXX_GPIO + 0x003C)
232
233#define GPIO_WU6 0x40000000UL
234#define GPIO_USB0 0x00010000UL
235#define GPIO_USB9 0x08000000UL
236#define GPIO_USB9S 0x00080000UL
237
238void init_power_switch(void)
239{
240 debug("init_power_switch\n");
241
242 /* Configure GPIO_WU6 as GPIO output for ATA reset */
243 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_WU6;
244 *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WU6;
245 *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_WU6;
246 __asm__ volatile ("sync");
247
248 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT &= ~GPIO_USB0;
249 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_ENABLE |= GPIO_USB0;
250 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DIR |= GPIO_USB0;
251 __asm__ volatile ("sync");
252
253 *(vu_long *) MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT &= ~GPIO_USB9;
254 *(vu_long *) MPC5XXX_INTERRUPT_GPIO_ENABLE &= ~GPIO_USB9;
255 __asm__ volatile ("sync");
256
257 if ((*(vu_long *) MPC5XXX_INTERRUPT_GPIO_STATUS & GPIO_USB9S) == 0) {
258 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT |= GPIO_USB0;
259 __asm__ volatile ("sync");
260 }
261}