3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
30 #include <asm/processor.h>
32 #if defined(CONFIG_OF_FLAT_TREE)
36 #if defined(CONFIG_LITE5200B)
37 #include "mt46v32m16.h"
39 # if defined(CONFIG_MPC5200_DDR)
40 # include "mt46v16m16-75.h"
42 #include "mt48lc16m16a2-75.h"
46 static void sdram_start (int hi_addr)
48 long hi_addr_bit = hi_addr ? 0x01000000 : 0;
50 /* unlock mode register */
51 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
52 __asm__ volatile ("sync");
54 /* precharge all banks */
55 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
56 __asm__ volatile ("sync");
59 /* set mode register: extended mode */
60 *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
61 __asm__ volatile ("sync");
63 /* set mode register: reset DLL */
64 *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
65 __asm__ volatile ("sync");
68 /* precharge all banks */
69 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
70 __asm__ volatile ("sync");
73 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
74 __asm__ volatile ("sync");
76 /* set mode register */
77 *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
78 __asm__ volatile ("sync");
80 /* normal operation */
81 *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
82 __asm__ volatile ("sync");
87 * ATTENTION: Although partially referenced initdram does NOT make real use
88 * use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
89 * is something else than 0x00000000.
92 #if defined(CONFIG_MPC5200)
93 long int initdram (int board_type)
102 /* setup SDRAM chip selects */
103 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
104 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
105 __asm__ volatile ("sync");
107 /* setup config registers */
108 *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
109 *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
110 __asm__ volatile ("sync");
114 *(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
115 __asm__ volatile ("sync");
118 /* find RAM size using SDRAM CS0 only */
120 test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
122 test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
130 /* memory smaller than 1MB is impossible */
131 if (dramsize < (1 << 20)) {
135 /* set SDRAM CS0 size according to the amount of RAM found */
137 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1;
139 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
142 /* let SDRAM CS1 start right after CS0 */
143 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
145 /* find RAM size using SDRAM CS1 only */
148 test2 = test1 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
151 test2 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
160 /* memory smaller than 1MB is impossible */
161 if (dramsize2 < (1 << 20)) {
165 /* set SDRAM CS1 size according to the amount of RAM found */
167 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
168 | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
170 *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
173 #else /* CFG_RAMBOOT */
175 /* retrieve size of memory connected to SDRAM CS0 */
176 dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
177 if (dramsize >= 0x13) {
178 dramsize = (1 << (dramsize - 0x13)) << 20;
183 /* retrieve size of memory connected to SDRAM CS1 */
184 dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
185 if (dramsize2 >= 0x13) {
186 dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
191 #endif /* CFG_RAMBOOT */
194 * On MPC5200B we need to set the special configuration delay in the
195 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
196 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
198 * "The SDelay should be written to a value of 0x00000004. It is
199 * required to account for changes caused by normal wafer processing
204 if ((SVR_MJREV(svr) >= 2) &&
205 (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
207 *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
208 __asm__ volatile ("sync");
211 return dramsize + dramsize2;
214 #elif defined(CONFIG_MGT5100)
216 long int initdram (int board_type)
222 /* setup and enable SDRAM chip selects */
223 *(vu_long *)MPC5XXX_SDRAM_START = 0x00000000;
224 *(vu_long *)MPC5XXX_SDRAM_STOP = 0x0000ffff;/* 2G */
225 *(vu_long *)MPC5XXX_ADDECR |= (1 << 22); /* Enable SDRAM */
226 __asm__ volatile ("sync");
228 /* setup config registers */
229 *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
230 *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
232 /* address select register */
233 *(vu_long *)MPC5XXX_SDRAM_XLBSEL = SDRAM_ADDRSEL;
234 __asm__ volatile ("sync");
238 test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
240 test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
248 /* set SDRAM end address according to size */
249 *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15);
251 #else /* CFG_RAMBOOT */
253 /* Retrieve amount of SDRAM available */
254 dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15);
256 #endif /* CFG_RAMBOOT */
262 #error Neither CONFIG_MPC5200 or CONFIG_MGT5100 defined
265 int checkboard (void)
267 #if defined (CONFIG_LITE5200B)
268 puts ("Board: Freescale Lite5200B\n");
269 #elif defined(CONFIG_MPC5200)
270 puts ("Board: Motorola MPC5200 (IceCube)\n");
271 #elif defined(CONFIG_MGT5100)
272 puts ("Board: Motorola MGT5100 (IceCube)\n");
277 void flash_preinit(void)
280 * Now, when we are in RAM, enable flash write
281 * access for detection process.
282 * Note that CS_BOOT cannot be cleared when
283 * executing in flash.
285 #if defined(CONFIG_MGT5100)
286 *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 25); /* disable CS_BOOT */
287 *(vu_long *)MPC5XXX_ADDECR |= (1 << 16); /* enable CS0 */
289 *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
292 void flash_afterinit(ulong size)
294 if (size == 0x800000) { /* adjust mapping */
295 *(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START =
296 START_REG(CFG_BOOTCS_START | size);
297 *(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP =
298 STOP_REG(CFG_BOOTCS_START | size, size);
303 static struct pci_controller hose;
305 extern void pci_mpc5xxx_init(struct pci_controller *);
307 void pci_init_board(void)
309 pci_mpc5xxx_init(&hose);
313 #if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET)
315 void init_ide_reset (void)
317 debug ("init_ide_reset\n");
319 /* Configure PSC1_4 as GPIO output for ATA reset */
320 *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
321 *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
323 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
326 void ide_set_reset (int idereset)
328 debug ("ide_reset(%d)\n", idereset);
331 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
332 /* Make a delay. MPC5200 spec says 25 usec min */
335 *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
338 #endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */
340 #if defined(CONFIG_OF_FLAT_TREE) && defined(CONFIG_OF_BOARD_SETUP)
342 ft_board_setup(void *blob, bd_t *bd)
344 ft_cpu_setup(blob, bd);