blob: ff44abdac5bb7e5271413ab32da2ea130092cc52 [file] [log] [blame]
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>
Ben Warren19403632008-08-31 10:03:22 -070035#include <netdev.h>
Stefan Roese8b7d1f02007-01-31 16:37:34 +010036
37#include "mt46v16m16-75.h"
38
39void init_power_switch(void);
40
41static void sdram_start(int hi_addr)
42{
43 long hi_addr_bit = hi_addr ? 0x01000000 : 0;
44
45 /* unlock mode register */
46 *(vu_long *) MPC5XXX_SDRAM_CTRL =
47 SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
48 __asm__ volatile ("sync");
49
50 /* precharge all banks */
51 *(vu_long *) MPC5XXX_SDRAM_CTRL =
52 SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
53 __asm__ volatile ("sync");
54
55 /* set mode register: extended mode */
56 *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
57 __asm__ volatile ("sync");
58
59 /* set mode register: reset DLL */
60 *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
61 __asm__ volatile ("sync");
62
63 /* precharge all banks */
64 *(vu_long *) MPC5XXX_SDRAM_CTRL =
65 SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
66 __asm__ volatile ("sync");
67
68 /* auto refresh */
69 *(vu_long *) MPC5XXX_SDRAM_CTRL =
70 SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
71 __asm__ volatile ("sync");
72
73 /* set mode register */
74 *(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE;
75 __asm__ volatile ("sync");
76
77 /* normal operation */
78 *(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
79 __asm__ volatile ("sync");
80}
81
82/*
83 * ATTENTION: Although partially referenced initdram does NOT make real use
84 * use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
85 * is something else than 0x00000000.
86 */
87
Becky Bruce9973e3c2008-06-09 16:03:40 -050088phys_size_t initdram(int board_type)
Stefan Roese8b7d1f02007-01-31 16:37:34 +010089{
90 ulong dramsize = 0;
91 ulong test1, test2;
92
93 /* setup SDRAM chip selects */
94 *(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0x0000001e; /* 2G at 0x0 */
95 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x80000000; /* disabled */
96 __asm__ volatile ("sync");
97
98 /* setup config registers */
99 *(vu_long *) MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
100 *(vu_long *) MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
101 __asm__ volatile ("sync");
102
103 /* set tap delay */
104 *(vu_long *) MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
105 __asm__ volatile ("sync");
106
107 /* find RAM size using SDRAM CS0 only */
108 sdram_start(0);
109 test1 = get_ram_size(CFG_SDRAM_BASE, 0x80000000);
110 sdram_start(1);
111 test2 = get_ram_size(CFG_SDRAM_BASE, 0x80000000);
112
113 if (test1 > test2) {
114 sdram_start(0);
115 dramsize = test1;
116 } else {
117 dramsize = test2;
118 }
119
120 /* memory smaller than 1MB is impossible */
121 if (dramsize < (1 << 20))
122 dramsize = 0;
123
124 /* set SDRAM CS0 size according to the amount of RAM found */
125 if (dramsize > 0) {
126 *(vu_long *) MPC5XXX_SDRAM_CS0CFG =
127 0x13 + __builtin_ffs(dramsize >> 20) - 1;
128 /* let SDRAM CS1 start right after CS0 */
129 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e; /* 2G */
130 } else {
131#if 0
132 *(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
133 /* let SDRAM CS1 start right after CS0 */
134 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e; /* 2G */
135#else
136 *(vu_long *) MPC5XXX_SDRAM_CS0CFG =
137 0x13 + __builtin_ffs(0x08000000 >> 20) - 1;
138 /* let SDRAM CS1 start right after CS0 */
139 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x08000000 + 0x0000001e; /* 2G */
140#endif
141 }
142
143#if 0
144 /* find RAM size using SDRAM CS1 only */
145 sdram_start(0);
146 get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
147 sdram_start(1);
148 get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
149 sdram_start(0);
150#endif
151 /* set SDRAM CS1 size according to the amount of RAM found */
152
153 *(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
154
155 init_power_switch();
156 return (dramsize);
157}
158
159int checkboard(void)
160{
161 puts("Board: esd CPX CPU5200 (mecp5200)\n");
162 return 0;
163}
164
165void flash_preinit(void)
166{
167 /*
168 * Now, when we are in RAM, enable flash write
169 * access for detection process.
170 * Note that CS_BOOT cannot be cleared when
171 * executing in flash.
172 */
173 *(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
174}
175
176void flash_afterinit(ulong size)
177{
178 if (size == CFG_FLASH_SIZE) {
179 /* adjust mapping */
180 *(vu_long *) MPC5XXX_BOOTCS_START =
181 *(vu_long *) MPC5XXX_CS0_START =
182 START_REG(CFG_BOOTCS_START | size);
183 *(vu_long *) MPC5XXX_BOOTCS_STOP =
184 *(vu_long *) MPC5XXX_CS0_STOP =
185 STOP_REG(CFG_BOOTCS_START | size, size);
186 }
187}
188
189#ifdef CONFIG_PCI
190static struct pci_controller hose;
191
192extern void pci_mpc5xxx_init(struct pci_controller *);
193
194void pci_init_board(void)
195{
196 pci_mpc5xxx_init(&hose);
197}
198#endif
199
Jon Loeliger77a31852007-07-10 10:39:10 -0500200#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
Stefan Roese8b7d1f02007-01-31 16:37:34 +0100201
202#define GPIO_PSC1_4 0x01000000UL
203
204void init_ide_reset(void)
205{
206 debug("init_ide_reset\n");
207
208 /* Configure PSC1_4 as GPIO output for ATA reset */
209 *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
210 *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
211}
212
213void ide_set_reset(int idereset)
214{
215 debug("ide_reset(%d)\n", idereset);
216
217 if (idereset)
218 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
219 else
220 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
221}
Jon Loeliger77a31852007-07-10 10:39:10 -0500222#endif
Stefan Roese8b7d1f02007-01-31 16:37:34 +0100223
224#define MPC5XXX_SIMPLEIO_GPIO_ENABLE (MPC5XXX_GPIO + 0x0004)
225#define MPC5XXX_SIMPLEIO_GPIO_DIR (MPC5XXX_GPIO + 0x000C)
226#define MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x0010)
227#define MPC5XXX_SIMPLEIO_GPIO_DATA_INPUT (MPC5XXX_GPIO + 0x0014)
228
229#define MPC5XXX_INTERRUPT_GPIO_ENABLE (MPC5XXX_GPIO + 0x0020)
230#define MPC5XXX_INTERRUPT_GPIO_DIR (MPC5XXX_GPIO + 0x0028)
231#define MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x002C)
232#define MPC5XXX_INTERRUPT_GPIO_STATUS (MPC5XXX_GPIO + 0x003C)
233
234#define GPIO_WU6 0x40000000UL
235#define GPIO_USB0 0x00010000UL
236#define GPIO_USB9 0x08000000UL
237#define GPIO_USB9S 0x00080000UL
238
239void init_power_switch(void)
240{
241 debug("init_power_switch\n");
242
243 /* Configure GPIO_WU6 as GPIO output for ATA reset */
244 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_WU6;
245 *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WU6;
246 *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_WU6;
247 __asm__ volatile ("sync");
248
249 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT &= ~GPIO_USB0;
250 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_ENABLE |= GPIO_USB0;
251 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DIR |= GPIO_USB0;
252 __asm__ volatile ("sync");
253
254 *(vu_long *) MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT &= ~GPIO_USB9;
255 *(vu_long *) MPC5XXX_INTERRUPT_GPIO_ENABLE &= ~GPIO_USB9;
256 __asm__ volatile ("sync");
257
258 if ((*(vu_long *) MPC5XXX_INTERRUPT_GPIO_STATUS & GPIO_USB9S) == 0) {
259 *(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT |= GPIO_USB0;
260 __asm__ volatile ("sync");
261 }
262}
Ben Warren19403632008-08-31 10:03:22 -0700263
264int board_eth_init(bd_t *bis)
265{
266 return pci_eth_init(bis);
267}