2 * Copyright 2004 Freescale Semiconductor.
4 * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/processor.h>
28 #include <asm/immap_85xx.h>
31 #include "../common/cadmus.h"
32 #include "../common/eeprom.h"
34 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
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);
43 int board_early_init_f (void)
50 volatile immap_t *immap = (immap_t *) CFG_CCSRBAR;
51 volatile ccsr_gur_t *gur = &immap->im_gur;
53 /* PCI slot in USER bits CSR[6:7] by convention. */
54 uint pci_slot = get_pci_slot ();
56 uint pci_dual = get_pci_dual (); /* PCI DUAL in CM_PCI[3] */
57 uint pci1_32 = gur->pordevsr & 0x10000; /* PORDEVSR[15] */
58 uint pci1_clk_sel = gur->porpllsr & 0x8000; /* PORPLLSR[16] */
59 uint pci2_clk_sel = gur->porpllsr & 0x4000; /* PORPLLSR[17] */
61 uint pci1_speed = get_clock_freq (); /* PCI PSPEED in [4:5] */
63 uint cpu_board_rev = get_cpu_board_revision ();
65 printf ("Board: CDS Version 0x%02x, PCI Slot %d\n",
66 get_board_version (), pci_slot);
68 printf ("CPU Board Revision %d.%d (0x%04x)\n",
69 MPC85XX_CPU_BOARD_MAJOR (cpu_board_rev),
70 MPC85XX_CPU_BOARD_MINOR (cpu_board_rev), cpu_board_rev);
72 printf (" PCI1: %d bit, %s MHz, %s\n",
74 (pci1_speed == 33000000) ? "33" :
75 (pci1_speed == 66000000) ? "66" : "unknown",
76 pci1_clk_sel ? "sync" : "async");
79 printf (" PCI2: 32 bit, 66 MHz, %s\n",
80 pci2_clk_sel ? "sync" : "async");
82 printf (" PCI2: disabled\n");
86 * Initialize local bus.
92 * Hack TSEC 3 and 4 IO voltages.
94 gur->tsec34ioovcr = 0xe7e0; /* 1110 0111 1110 0xxx */
100 initdram(int board_type)
103 volatile immap_t *immap = (immap_t *)CFG_IMMR;
105 puts("Initializing\n");
107 #if defined(CONFIG_DDR_DLL)
110 * Work around to stabilize DDR DLL MSYNC_IN.
111 * Errata DDR9 seems to have been fixed.
112 * This is now the workaround for Errata DDR11:
113 * Override DLL = 1, Course Adj = 1, Tap Select = 0
116 volatile ccsr_gur_t *gur= &immap->im_gur;
118 gur->ddrdllcr = 0x81000000;
119 asm("sync;isync;msync");
123 dram_size = spd_sdram();
125 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
127 * Initialize and enable DDR ECC.
129 ddr_enable_ecc(dram_size);
132 * SDRAM Initialization
141 * Initialize Local Bus
146 volatile immap_t *immap = (immap_t *)CFG_IMMR;
147 volatile ccsr_gur_t *gur = &immap->im_gur;
148 volatile ccsr_lbc_t *lbc = &immap->im_lbc;
154 get_sys_info(&sysinfo);
155 clkdiv = (lbc->lcrr & 0x0f) * 2;
156 lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
158 gur->lbiuiplldcr1 = 0x00078080;
160 gur->lbiuiplldcr0 = 0x7c0f1bf0;
161 } else if (clkdiv == 8) {
162 gur->lbiuiplldcr0 = 0x6c0f1bf0;
163 } else if (clkdiv == 4) {
164 gur->lbiuiplldcr0 = 0x5c0f1bf0;
167 lbc->lcrr |= 0x00030000;
169 asm("sync;isync;msync");
173 * Initialize SDRAM memory on the Local Bus.
178 #if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)
181 volatile immap_t *immap = (immap_t *)CFG_IMMR;
182 volatile ccsr_lbc_t *lbc = &immap->im_lbc;
183 uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
189 print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
192 * Setup SDRAM Base and Option Registers
194 lbc->or2 = CFG_OR2_PRELIM;
197 lbc->br2 = CFG_BR2_PRELIM;
200 lbc->lbcr = CFG_LBC_LBCR;
204 lbc->lsrt = CFG_LBC_LSRT;
205 lbc->mrtpr = CFG_LBC_MRTPR;
209 * MPC8548 uses "new" 15-16 style addressing.
211 cpu_board_rev = get_cpu_board_revision();
212 lsdmr_common = CFG_LBC_LSDMR_COMMON;
213 lsdmr_common |= CFG_LBC_LSDMR_BSMA1516;
216 * Issue PRECHARGE ALL command.
218 lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_PCHALL;
221 ppcDcbf((unsigned long) sdram_addr);
225 * Issue 8 AUTO REFRESH commands.
227 for (idx = 0; idx < 8; idx++) {
228 lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_ARFRSH;
231 ppcDcbf((unsigned long) sdram_addr);
236 * Issue 8 MODE-set command.
238 lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_MRW;
241 ppcDcbf((unsigned long) sdram_addr);
245 * Issue NORMAL OP command.
247 lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_NORMAL;
250 ppcDcbf((unsigned long) sdram_addr);
251 udelay(200); /* Overkill. Must wait > 200 bus cycles */
253 #endif /* enable SDRAM init */
256 #if defined(CFG_DRAM_TEST)
260 uint *pstart = (uint *) CFG_MEMTEST_START;
261 uint *pend = (uint *) CFG_MEMTEST_END;
264 printf("Testing DRAM from 0x%08x to 0x%08x\n",
268 printf("DRAM test phase 1:\n");
269 for (p = pstart; p < pend; p++)
272 for (p = pstart; p < pend; p++) {
273 if (*p != 0xaaaaaaaa) {
274 printf ("DRAM test fails at: %08x\n", (uint) p);
279 printf("DRAM test phase 2:\n");
280 for (p = pstart; p < pend; p++)
283 for (p = pstart; p < pend; p++) {
284 if (*p != 0x55555555) {
285 printf ("DRAM test fails at: %08x\n", (uint) p);
290 printf("DRAM test passed.\n");
295 #if defined(CONFIG_PCI)
298 * Initialize PCI Devices, report devices found.
301 #ifndef CONFIG_PCI_PNP
302 static struct pci_config_table pci_mpc85xxcds_config_table[] = {
303 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
304 PCI_IDSEL_NUMBER, PCI_ANY_ID,
305 pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
307 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
313 static struct pci_controller hose = {
314 #ifndef CONFIG_PCI_PNP
315 config_table: pci_mpc85xxcds_config_table,
319 #endif /* CONFIG_PCI */
325 extern void pci_mpc85xx_init(struct pci_controller *hose);
327 pci_mpc85xx_init(&hose);