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>
32 #include <spd_sdram.h>
34 #if defined(CONFIG_DDR_ECC)
35 extern void ddr_enable_ecc(unsigned int dram_size);
38 void local_bus_init(void);
39 void sdram_init(void);
40 long int fixed_sdram(void);
43 int board_early_init_f (void)
45 #if defined(CONFIG_PCI)
46 volatile ccsr_pcix_t *pci = (void *)(CFG_MPC85xx_PCIX_ADDR);
48 pci->peer &= 0xffffffdf; /* disable master abort */
56 puts("Board: MicroSys PM854\n");
59 printf(" PCI1: 32 bit, %d MHz (compiled)\n",
60 CONFIG_SYS_CLK_FREQ / 1000000);
62 printf(" PCI1: disabled\n");
66 * Initialize local bus.
75 initdram(int board_type)
79 puts("Initializing\n");
81 #if defined(CONFIG_DDR_DLL)
83 volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
89 * Work around to stabilize DDR DLL
91 gur->ddrdllcr = 0x81000000;
92 asm("sync;isync;msync");
94 while (gur->ddrdllcr != 0x81000100)
96 gur->devdisr = gur->devdisr | 0x00010000;
97 asm("sync;isync;msync");
100 gur->devdisr = gur->devdisr & 0xfff7ffff;
101 asm("sync;isync;msync");
107 #if defined(CONFIG_SPD_EEPROM)
108 dram_size = spd_sdram ();
110 dram_size = fixed_sdram ();
113 #if defined(CONFIG_DDR_ECC)
115 * Initialize and enable DDR ECC.
117 ddr_enable_ecc(dram_size);
125 * Initialize Local Bus
131 volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
132 volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR);
140 * Fix Local Bus clock glitch when DLL is enabled.
142 * If localbus freq is < 66Mhz, DLL bypass mode must be used.
143 * If localbus freq is > 133Mhz, DLL can be safely enabled.
144 * Between 66 and 133, the DLL is enabled with an override workaround.
147 get_sys_info(&sysinfo);
148 clkdiv = lbc->lcrr & 0x0f;
149 lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
152 lbc->lcrr = CFG_LBC_LCRR | 0x80000000; /* DLL Bypass */
154 } else if (lbc_hz >= 133) {
155 lbc->lcrr = CFG_LBC_LCRR & (~0x80000000); /* DLL Enabled */
159 * On REV1 boards, need to change CLKDIV before enable DLL.
160 * Default CLKDIV is 8, change it to 4 temporarily.
162 uint pvr = get_pvr();
163 uint temp_lbcdll = 0;
165 if (pvr == PVR_85xx_REV1) {
166 /* FIXME: Justify the high bit here. */
167 lbc->lcrr = 0x10000004;
170 lbc->lcrr = CFG_LBC_LCRR & (~0x80000000); /* DLL Enabled */
174 * Sample LBC DLL ctrl reg, upshift it to set the
177 temp_lbcdll = gur->lbcdllcr;
178 gur->lbcdllcr = (((temp_lbcdll & 0xff) << 16) | 0x80000000);
179 asm("sync;isync;msync");
184 #if defined(CFG_DRAM_TEST)
187 uint *pstart = (uint *) CFG_MEMTEST_START;
188 uint *pend = (uint *) CFG_MEMTEST_END;
191 printf("SDRAM test phase 1:\n");
192 for (p = pstart; p < pend; p++)
195 for (p = pstart; p < pend; p++) {
196 if (*p != 0xaaaaaaaa) {
197 printf ("SDRAM test fails at: %08x\n", (uint) p);
202 printf("SDRAM test phase 2:\n");
203 for (p = pstart; p < pend; p++)
206 for (p = pstart; p < pend; p++) {
207 if (*p != 0x55555555) {
208 printf ("SDRAM test fails at: %08x\n", (uint) p);
213 printf("SDRAM test passed.\n");
219 #if !defined(CONFIG_SPD_EEPROM)
220 /*************************************************************************
221 * fixed sdram init -- doesn't use serial presence detect.
222 ************************************************************************/
223 long int fixed_sdram (void)
226 volatile ccsr_ddr_t *ddr= (void *)(CFG_MPC85xx_DDR_ADDR);
228 ddr->cs0_bnds = CFG_DDR_CS0_BNDS;
229 ddr->cs0_config = CFG_DDR_CS0_CONFIG;
230 ddr->timing_cfg_1 = CFG_DDR_TIMING_1;
231 ddr->timing_cfg_2 = CFG_DDR_TIMING_2;
232 ddr->sdram_mode = CFG_DDR_MODE;
233 ddr->sdram_interval = CFG_DDR_INTERVAL;
234 #if defined (CONFIG_DDR_ECC)
235 ddr->err_disable = 0x0000000D;
236 ddr->err_sbe = 0x00ff0000;
238 asm("sync;isync;msync");
240 #if defined (CONFIG_DDR_ECC)
241 /* Enable ECC checking */
242 ddr->sdram_cfg = (CFG_DDR_CONTROL | 0x20000000);
244 ddr->sdram_cfg = CFG_DDR_CONTROL;
246 asm("sync; isync; msync");
249 return CFG_SDRAM_SIZE * 1024 * 1024;
251 #endif /* !defined(CONFIG_SPD_EEPROM) */
254 #if defined(CONFIG_PCI)
256 * Initialize PCI Devices, report devices found.
259 #ifndef CONFIG_PCI_PNP
260 static struct pci_config_table pci_pm854_config_table[] = {
261 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
262 PCI_IDSEL_NUMBER, PCI_ANY_ID,
263 pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
265 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
272 static struct pci_controller hose = {
273 #ifndef CONFIG_PCI_PNP
274 config_table: pci_pm854_config_table,
278 #endif /* CONFIG_PCI */
285 pci_mpc85xx_init(&hose);
286 #endif /* CONFIG_PCI */