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[karo-tx-uboot.git] / board / sbc8548 / sbc8548.c
1 /*
2  * Copyright 2007,2009 Wind River Systems, Inc. <www.windriver.com>
3  *
4  * Copyright 2007 Embedded Specialties, Inc.
5  *
6  * Copyright 2004, 2007 Freescale Semiconductor.
7  *
8  * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
9  *
10  * See file CREDITS for list of people who contributed to this
11  * project.
12  *
13  * This program is free software; you can redistribute it and/or
14  * modify it under the terms of the GNU General Public License as
15  * published by the Free Software Foundation; either version 2 of
16  * the License, or (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21  * GNU General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software
25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26  * MA 02111-1307 USA
27  */
28
29 #include <common.h>
30 #include <pci.h>
31 #include <asm/processor.h>
32 #include <asm/immap_85xx.h>
33 #include <asm/fsl_pci.h>
34 #include <asm/fsl_ddr_sdram.h>
35 #include <asm/fsl_serdes.h>
36 #include <spd_sdram.h>
37 #include <netdev.h>
38 #include <tsec.h>
39 #include <miiphy.h>
40 #include <libfdt.h>
41 #include <fdt_support.h>
42
43 DECLARE_GLOBAL_DATA_PTR;
44
45 void local_bus_init(void);
46
47 int board_early_init_f (void)
48 {
49         return 0;
50 }
51
52 int checkboard (void)
53 {
54         volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
55         volatile u_char *rev= (void *)CONFIG_SYS_BD_REV;
56
57         printf ("Board: Wind River SBC8548 Rev. 0x%01x\n",
58                         in_8(rev) >> 4);
59
60         /*
61          * Initialize local bus.
62          */
63         local_bus_init ();
64
65         out_be32(&ecm->eedr, 0xffffffff);       /* clear ecm errors */
66         out_be32(&ecm->eeer, 0xffffffff);       /* enable ecm errors */
67         return 0;
68 }
69
70 /*
71  * Initialize Local Bus
72  */
73 void
74 local_bus_init(void)
75 {
76         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
77         volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
78
79         uint clkdiv;
80         sys_info_t sysinfo;
81
82         get_sys_info(&sysinfo);
83         clkdiv = (in_be32(&lbc->lcrr) & LCRR_CLKDIV) * 2;
84
85         out_be32(&gur->lbiuiplldcr1, 0x00078080);
86         if (clkdiv == 16) {
87                 out_be32(&gur->lbiuiplldcr0, 0x7c0f1bf0);
88         } else if (clkdiv == 8) {
89                 out_be32(&gur->lbiuiplldcr0, 0x6c0f1bf0);
90         } else if (clkdiv == 4) {
91                 out_be32(&gur->lbiuiplldcr0, 0x5c0f1bf0);
92         }
93
94         setbits_be32(&lbc->lcrr, 0x00030000);
95
96         asm("sync;isync;msync");
97
98         out_be32(&lbc->ltesr, 0xffffffff);      /* Clear LBC error IRQs */
99         out_be32(&lbc->lteir, 0xffffffff);      /* Enable LBC error IRQs */
100 }
101
102 /*
103  * Initialize SDRAM memory on the Local Bus.
104  */
105 void lbc_sdram_init(void)
106 {
107 #if defined(CONFIG_SYS_LBC_SDRAM_SIZE)
108
109         uint idx;
110         volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
111         uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
112         uint lsdmr_common;
113
114         puts("    SDRAM: ");
115
116         print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
117
118         /*
119          * Setup SDRAM Base and Option Registers
120          */
121         set_lbc_or(3, CONFIG_SYS_OR3_PRELIM);
122         set_lbc_br(3, CONFIG_SYS_BR3_PRELIM);
123         set_lbc_or(4, CONFIG_SYS_OR4_PRELIM);
124         set_lbc_br(4, CONFIG_SYS_BR4_PRELIM);
125
126         out_be32(&lbc->lbcr, CONFIG_SYS_LBC_LBCR);
127         asm("msync");
128
129         out_be32(&lbc->lsrt,  CONFIG_SYS_LBC_LSRT);
130         out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
131         asm("msync");
132
133         /*
134          * MPC8548 uses "new" 15-16 style addressing.
135          */
136         lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
137         lsdmr_common |= LSDMR_BSMA1516;
138
139         /*
140          * Issue PRECHARGE ALL command.
141          */
142         out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_PCHALL);
143         asm("sync;msync");
144         *sdram_addr = 0xff;
145         ppcDcbf((unsigned long) sdram_addr);
146         udelay(100);
147
148         /*
149          * Issue 8 AUTO REFRESH commands.
150          */
151         for (idx = 0; idx < 8; idx++) {
152                 out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_ARFRSH);
153                 asm("sync;msync");
154                 *sdram_addr = 0xff;
155                 ppcDcbf((unsigned long) sdram_addr);
156                 udelay(100);
157         }
158
159         /*
160          * Issue 8 MODE-set command.
161          */
162         out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_MRW);
163         asm("sync;msync");
164         *sdram_addr = 0xff;
165         ppcDcbf((unsigned long) sdram_addr);
166         udelay(100);
167
168         /*
169          * Issue NORMAL OP command.
170          */
171         out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_NORMAL);
172         asm("sync;msync");
173         *sdram_addr = 0xff;
174         ppcDcbf((unsigned long) sdram_addr);
175         udelay(200);    /* Overkill. Must wait > 200 bus cycles */
176
177 #endif  /* enable SDRAM init */
178 }
179
180 #if defined(CONFIG_SYS_DRAM_TEST)
181 int
182 testdram(void)
183 {
184         uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
185         uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
186         uint *p;
187
188         printf("Testing DRAM from 0x%08x to 0x%08x\n",
189                CONFIG_SYS_MEMTEST_START,
190                CONFIG_SYS_MEMTEST_END);
191
192         printf("DRAM test phase 1:\n");
193         for (p = pstart; p < pend; p++)
194                 *p = 0xaaaaaaaa;
195
196         for (p = pstart; p < pend; p++) {
197                 if (*p != 0xaaaaaaaa) {
198                         printf ("DRAM test fails at: %08x\n", (uint) p);
199                         return 1;
200                 }
201         }
202
203         printf("DRAM test phase 2:\n");
204         for (p = pstart; p < pend; p++)
205                 *p = 0x55555555;
206
207         for (p = pstart; p < pend; p++) {
208                 if (*p != 0x55555555) {
209                         printf ("DRAM test fails at: %08x\n", (uint) p);
210                         return 1;
211                 }
212         }
213
214         printf("DRAM test passed.\n");
215         return 0;
216 }
217 #endif
218
219 #if !defined(CONFIG_SPD_EEPROM)
220 #define CONFIG_SYS_DDR_CONTROL 0xc300c000
221 /*************************************************************************
222  *  fixed_sdram init -- doesn't use serial presence detect.
223  *  assumes 256MB DDR2 SDRAM SODIMM, without ECC, running at DDR400 speed.
224  ************************************************************************/
225 phys_size_t fixed_sdram(void)
226 {
227         volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
228
229         out_be32(&ddr->cs0_bnds, 0x0000007f);
230         out_be32(&ddr->cs1_bnds, 0x008000ff);
231         out_be32(&ddr->cs2_bnds, 0x00000000);
232         out_be32(&ddr->cs3_bnds, 0x00000000);
233         out_be32(&ddr->cs0_config, 0x80010101);
234         out_be32(&ddr->cs1_config, 0x80010101);
235         out_be32(&ddr->cs2_config, 0x00000000);
236         out_be32(&ddr->cs3_config, 0x00000000);
237         out_be32(&ddr->timing_cfg_3, 0x00000000);
238         out_be32(&ddr->timing_cfg_0, 0x00220802);
239         out_be32(&ddr->timing_cfg_1, 0x38377322);
240         out_be32(&ddr->timing_cfg_2, 0x0fa044C7);
241         out_be32(&ddr->sdram_cfg, 0x4300C000);
242         out_be32(&ddr->sdram_cfg_2, 0x24401000);
243         out_be32(&ddr->sdram_mode, 0x23C00542);
244         out_be32(&ddr->sdram_mode_2, 0x00000000);
245         out_be32(&ddr->sdram_interval, 0x05080100);
246         out_be32(&ddr->sdram_md_cntl, 0x00000000);
247         out_be32(&ddr->sdram_data_init, 0x00000000);
248         out_be32(&ddr->sdram_clk_cntl, 0x03800000);
249         asm("sync;isync;msync");
250         udelay(500);
251
252         #if defined (CONFIG_DDR_ECC)
253           /* Enable ECC checking */
254           out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL | 0x20000000);
255         #else
256           out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL);
257         #endif
258
259         return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
260 }
261 #endif
262
263 #ifdef CONFIG_PCI1
264 static struct pci_controller pci1_hose;
265 #endif  /* CONFIG_PCI1 */
266
267 #ifdef CONFIG_PCI
268 void
269 pci_init_board(void)
270 {
271         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
272         int first_free_busno = 0;
273
274 #ifdef CONFIG_PCI1
275         struct fsl_pci_info pci_info;
276         u32 devdisr = in_be32(&gur->devdisr);
277         u32 pordevsr = in_be32(&gur->pordevsr);
278         u32 porpllsr = in_be32(&gur->porpllsr);
279
280         if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
281                 uint pci_32 = pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;
282                 uint pci_arb = pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;
283                 uint pci_clk_sel = porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;
284                 uint pci_speed = CONFIG_SYS_CLK_FREQ;   /* get_clock_freq() */
285
286                 printf("PCI: Host, %d bit, %s MHz, %s, %s\n",
287                         (pci_32) ? 32 : 64,
288                         (pci_speed == 33000000) ? "33" :
289                         (pci_speed == 66000000) ? "66" : "unknown",
290                         pci_clk_sel ? "sync" : "async",
291                         pci_arb ? "arbiter" : "external-arbiter");
292
293                 SET_STD_PCI_INFO(pci_info, 1);
294                 set_next_law(pci_info.mem_phys,
295                         law_size_bits(pci_info.mem_size), pci_info.law);
296                 set_next_law(pci_info.io_phys,
297                         law_size_bits(pci_info.io_size), pci_info.law);
298
299                 first_free_busno = fsl_pci_init_port(&pci_info,
300                                         &pci1_hose, first_free_busno);
301         } else {
302                 printf("PCI: disabled\n");
303         }
304
305         puts("\n");
306 #else
307         setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1); /* disable */
308 #endif
309
310         setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI2); /* disable PCI2 */
311
312         fsl_pcie_init_board(first_free_busno);
313 }
314 #endif
315
316 int board_eth_init(bd_t *bis)
317 {
318         tsec_standard_init(bis);
319         pci_eth_init(bis);
320         return 0;       /* otherwise cpu_eth_init gets run */
321 }
322
323 int last_stage_init(void)
324 {
325         return 0;
326 }
327
328 #if defined(CONFIG_OF_BOARD_SETUP)
329 void ft_board_setup(void *blob, bd_t *bd)
330 {
331         ft_cpu_setup(blob, bd);
332
333 #ifdef CONFIG_FSL_PCI_INIT
334         FT_FSL_PCI_SETUP;
335 #endif
336 }
337 #endif