2 * Copyright 2004 Freescale Semiconductor.
3 * (C) Copyright 2002,2003, Motorola Inc.
4 * Xianghua Xiao, (X.Xiao@motorola.com)
6 * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.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>
31 #include <asm/immap_85xx.h>
34 #if defined(CONFIG_DDR_ECC)
35 extern void ddr_enable_ecc(unsigned int dram_size
);
38 extern long int spd_sdram(void);
40 void local_bus_init(void);
41 void sdram_init(void);
42 long int fixed_sdram(void);
45 int board_early_init_f (void)
47 #if defined(CONFIG_PCI)
48 volatile immap_t
*immr
= (immap_t
*)CFG_IMMR
;
49 volatile ccsr_pcix_t
*pci
= &immr
->im_pcix
;
51 pci
->peer
&= 0xffffffdf; /* disable master abort */
59 puts("Board: MicroSys PM854\n");
62 printf(" PCI1: 32 bit, %d MHz (compiled)\n",
63 CONFIG_SYS_CLK_FREQ
/ 1000000);
65 printf(" PCI1: disabled\n");
69 * Initialize local bus.
78 initdram(int board_type
)
81 extern long spd_sdram (void);
82 volatile immap_t
*immap
= (immap_t
*)CFG_IMMR
;
84 puts("Initializing\n");
86 #if defined(CONFIG_DDR_DLL)
88 volatile ccsr_gur_t
*gur
= &immap
->im_gur
;
94 * Work around to stabilize DDR DLL
96 gur
->ddrdllcr
= 0x81000000;
97 asm("sync;isync;msync");
99 while (gur
->ddrdllcr
!= 0x81000100)
101 gur
->devdisr
= gur
->devdisr
| 0x00010000;
102 asm("sync;isync;msync");
105 gur
->devdisr
= gur
->devdisr
& 0xfff7ffff;
106 asm("sync;isync;msync");
112 #if defined(CONFIG_SPD_EEPROM)
113 dram_size
= spd_sdram ();
115 dram_size
= fixed_sdram ();
118 #if defined(CONFIG_DDR_ECC)
120 * Initialize and enable DDR ECC.
122 ddr_enable_ecc(dram_size
);
130 * Initialize Local Bus
136 volatile immap_t
*immap
= (immap_t
*)CFG_IMMR
;
137 volatile ccsr_gur_t
*gur
= &immap
->im_gur
;
138 volatile ccsr_lbc_t
*lbc
= &immap
->im_lbc
;
146 * Fix Local Bus clock glitch when DLL is enabled.
148 * If localbus freq is < 66Mhz, DLL bypass mode must be used.
149 * If localbus freq is > 133Mhz, DLL can be safely enabled.
150 * Between 66 and 133, the DLL is enabled with an override workaround.
153 get_sys_info(&sysinfo
);
154 clkdiv
= lbc
->lcrr
& 0x0f;
155 lbc_hz
= sysinfo
.freqSystemBus
/ 1000000 / clkdiv
;
158 lbc
->lcrr
= CFG_LBC_LCRR
| 0x80000000; /* DLL Bypass */
160 } else if (lbc_hz
>= 133) {
161 lbc
->lcrr
= CFG_LBC_LCRR
& (~0x80000000); /* DLL Enabled */
165 * On REV1 boards, need to change CLKDIV before enable DLL.
166 * Default CLKDIV is 8, change it to 4 temporarily.
168 uint pvr
= get_pvr();
169 uint temp_lbcdll
= 0;
171 if (pvr
== PVR_85xx_REV1
) {
172 /* FIXME: Justify the high bit here. */
173 lbc
->lcrr
= 0x10000004;
176 lbc
->lcrr
= CFG_LBC_LCRR
& (~0x80000000); /* DLL Enabled */
180 * Sample LBC DLL ctrl reg, upshift it to set the
183 temp_lbcdll
= gur
->lbcdllcr
;
184 gur
->lbcdllcr
= (((temp_lbcdll
& 0xff) << 16) | 0x80000000);
185 asm("sync;isync;msync");
190 #if defined(CFG_DRAM_TEST)
193 uint
*pstart
= (uint
*) CFG_MEMTEST_START
;
194 uint
*pend
= (uint
*) CFG_MEMTEST_END
;
197 printf("SDRAM test phase 1:\n");
198 for (p
= pstart
; p
< pend
; p
++)
201 for (p
= pstart
; p
< pend
; p
++) {
202 if (*p
!= 0xaaaaaaaa) {
203 printf ("SDRAM test fails at: %08x\n", (uint
) p
);
208 printf("SDRAM test phase 2:\n");
209 for (p
= pstart
; p
< pend
; p
++)
212 for (p
= pstart
; p
< pend
; p
++) {
213 if (*p
!= 0x55555555) {
214 printf ("SDRAM test fails at: %08x\n", (uint
) p
);
219 printf("SDRAM test passed.\n");
225 #if !defined(CONFIG_SPD_EEPROM)
226 /*************************************************************************
227 * fixed sdram init -- doesn't use serial presence detect.
228 ************************************************************************/
229 long int fixed_sdram (void)
232 volatile immap_t
*immap
= (immap_t
*)CFG_IMMR
;
233 volatile ccsr_ddr_t
*ddr
= &immap
->im_ddr
;
235 ddr
->cs0_bnds
= CFG_DDR_CS0_BNDS
;
236 ddr
->cs0_config
= CFG_DDR_CS0_CONFIG
;
237 ddr
->timing_cfg_1
= CFG_DDR_TIMING_1
;
238 ddr
->timing_cfg_2
= CFG_DDR_TIMING_2
;
239 ddr
->sdram_mode
= CFG_DDR_MODE
;
240 ddr
->sdram_interval
= CFG_DDR_INTERVAL
;
241 #if defined (CONFIG_DDR_ECC)
242 ddr
->err_disable
= 0x0000000D;
243 ddr
->err_sbe
= 0x00ff0000;
245 asm("sync;isync;msync");
247 #if defined (CONFIG_DDR_ECC)
248 /* Enable ECC checking */
249 ddr
->sdram_cfg
= (CFG_DDR_CONTROL
| 0x20000000);
251 ddr
->sdram_cfg
= CFG_DDR_CONTROL
;
253 asm("sync; isync; msync");
256 return CFG_SDRAM_SIZE
* 1024 * 1024;
258 #endif /* !defined(CONFIG_SPD_EEPROM) */
261 #if defined(CONFIG_PCI)
263 * Initialize PCI Devices, report devices found.
266 #ifndef CONFIG_PCI_PNP
267 static struct pci_config_table pci_pm854_config_table
[] = {
268 { PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
, PCI_ANY_ID
,
269 PCI_IDSEL_NUMBER
, PCI_ANY_ID
,
270 pci_cfgfunc_config_device
, { PCI_ENET0_IOADDR
,
272 PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
279 static struct pci_controller hose
= {
280 #ifndef CONFIG_PCI_PNP
281 config_table
: pci_pm854_config_table
,
285 #endif /* CONFIG_PCI */
292 pci_mpc85xx_init(&hose
);
293 #endif /* CONFIG_PCI */