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powerpc/85xx: Rework SBC8548 pci_init_board to use common FSL PCIe code
[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         uint lbc_hz;
81         sys_info_t sysinfo;
82
83         get_sys_info(&sysinfo);
84         clkdiv = (in_be32(&lbc->lcrr) & LCRR_CLKDIV) * 2;
85         lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
86
87         out_be32(&gur->lbiuiplldcr1, 0x00078080);
88         if (clkdiv == 16) {
89                 out_be32(&gur->lbiuiplldcr0, 0x7c0f1bf0);
90         } else if (clkdiv == 8) {
91                 out_be32(&gur->lbiuiplldcr0, 0x6c0f1bf0);
92         } else if (clkdiv == 4) {
93                 out_be32(&gur->lbiuiplldcr0, 0x5c0f1bf0);
94         }
95
96         setbits_be32(&lbc->lcrr, 0x00030000);
97
98         asm("sync;isync;msync");
99
100         out_be32(&lbc->ltesr, 0xffffffff);      /* Clear LBC error IRQs */
101         out_be32(&lbc->lteir, 0xffffffff);      /* Enable LBC error IRQs */
102 }
103
104 /*
105  * Initialize SDRAM memory on the Local Bus.
106  */
107 void lbc_sdram_init(void)
108 {
109 #if defined(CONFIG_SYS_LBC_SDRAM_SIZE)
110
111         uint idx;
112         volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
113         uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
114         uint lsdmr_common;
115
116         puts("    SDRAM: ");
117
118         print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
119
120         /*
121          * Setup SDRAM Base and Option Registers
122          */
123         set_lbc_or(3, CONFIG_SYS_OR3_PRELIM);
124         set_lbc_br(3, CONFIG_SYS_BR3_PRELIM);
125         set_lbc_or(4, CONFIG_SYS_OR4_PRELIM);
126         set_lbc_br(4, CONFIG_SYS_BR4_PRELIM);
127
128         out_be32(&lbc->lbcr, CONFIG_SYS_LBC_LBCR);
129         asm("msync");
130
131         out_be32(&lbc->lsrt,  CONFIG_SYS_LBC_LSRT);
132         out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
133         asm("msync");
134
135         /*
136          * MPC8548 uses "new" 15-16 style addressing.
137          */
138         lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
139         lsdmr_common |= LSDMR_BSMA1516;
140
141         /*
142          * Issue PRECHARGE ALL command.
143          */
144         out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_PCHALL);
145         asm("sync;msync");
146         *sdram_addr = 0xff;
147         ppcDcbf((unsigned long) sdram_addr);
148         udelay(100);
149
150         /*
151          * Issue 8 AUTO REFRESH commands.
152          */
153         for (idx = 0; idx < 8; idx++) {
154                 out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_ARFRSH);
155                 asm("sync;msync");
156                 *sdram_addr = 0xff;
157                 ppcDcbf((unsigned long) sdram_addr);
158                 udelay(100);
159         }
160
161         /*
162          * Issue 8 MODE-set command.
163          */
164         out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_MRW);
165         asm("sync;msync");
166         *sdram_addr = 0xff;
167         ppcDcbf((unsigned long) sdram_addr);
168         udelay(100);
169
170         /*
171          * Issue NORMAL OP command.
172          */
173         out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_NORMAL);
174         asm("sync;msync");
175         *sdram_addr = 0xff;
176         ppcDcbf((unsigned long) sdram_addr);
177         udelay(200);    /* Overkill. Must wait > 200 bus cycles */
178
179 #endif  /* enable SDRAM init */
180 }
181
182 #if defined(CONFIG_SYS_DRAM_TEST)
183 int
184 testdram(void)
185 {
186         uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
187         uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
188         uint *p;
189
190         printf("Testing DRAM from 0x%08x to 0x%08x\n",
191                CONFIG_SYS_MEMTEST_START,
192                CONFIG_SYS_MEMTEST_END);
193
194         printf("DRAM test phase 1:\n");
195         for (p = pstart; p < pend; p++)
196                 *p = 0xaaaaaaaa;
197
198         for (p = pstart; p < pend; p++) {
199                 if (*p != 0xaaaaaaaa) {
200                         printf ("DRAM test fails at: %08x\n", (uint) p);
201                         return 1;
202                 }
203         }
204
205         printf("DRAM test phase 2:\n");
206         for (p = pstart; p < pend; p++)
207                 *p = 0x55555555;
208
209         for (p = pstart; p < pend; p++) {
210                 if (*p != 0x55555555) {
211                         printf ("DRAM test fails at: %08x\n", (uint) p);
212                         return 1;
213                 }
214         }
215
216         printf("DRAM test passed.\n");
217         return 0;
218 }
219 #endif
220
221 #if !defined(CONFIG_SPD_EEPROM)
222 #define CONFIG_SYS_DDR_CONTROL 0xc300c000
223 /*************************************************************************
224  *  fixed_sdram init -- doesn't use serial presence detect.
225  *  assumes 256MB DDR2 SDRAM SODIMM, without ECC, running at DDR400 speed.
226  ************************************************************************/
227 phys_size_t fixed_sdram(void)
228 {
229         volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
230
231         out_be32(&ddr->cs0_bnds, 0x0000007f);
232         out_be32(&ddr->cs1_bnds, 0x008000ff);
233         out_be32(&ddr->cs2_bnds, 0x00000000);
234         out_be32(&ddr->cs3_bnds, 0x00000000);
235         out_be32(&ddr->cs0_config, 0x80010101);
236         out_be32(&ddr->cs1_config, 0x80010101);
237         out_be32(&ddr->cs2_config, 0x00000000);
238         out_be32(&ddr->cs3_config, 0x00000000);
239         out_be32(&ddr->timing_cfg_3, 0x00000000);
240         out_be32(&ddr->timing_cfg_0, 0x00220802);
241         out_be32(&ddr->timing_cfg_1, 0x38377322);
242         out_be32(&ddr->timing_cfg_2, 0x0fa044C7);
243         out_be32(&ddr->sdram_cfg, 0x4300C000);
244         out_be32(&ddr->sdram_cfg_2, 0x24401000);
245         out_be32(&ddr->sdram_mode, 0x23C00542);
246         out_be32(&ddr->sdram_mode_2, 0x00000000);
247         out_be32(&ddr->sdram_interval, 0x05080100);
248         out_be32(&ddr->sdram_md_cntl, 0x00000000);
249         out_be32(&ddr->sdram_data_init, 0x00000000);
250         out_be32(&ddr->sdram_clk_cntl, 0x03800000);
251         asm("sync;isync;msync");
252         udelay(500);
253
254         #if defined (CONFIG_DDR_ECC)
255           /* Enable ECC checking */
256           out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL | 0x20000000);
257         #else
258           out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL);
259         #endif
260
261         return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
262 }
263 #endif
264
265 #ifdef CONFIG_PCI1
266 static struct pci_controller pci1_hose;
267 #endif  /* CONFIG_PCI1 */
268
269 #ifdef CONFIG_PCI
270 void
271 pci_init_board(void)
272 {
273         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
274         int first_free_busno = 0;
275
276 #ifdef CONFIG_PCI1
277         struct fsl_pci_info pci_info;
278         u32 devdisr = in_be32(&gur->devdisr);
279         u32 pordevsr = in_be32(&gur->pordevsr);
280         u32 porpllsr = in_be32(&gur->porpllsr);
281
282         if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
283                 uint pci_32 = pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;
284                 uint pci_arb = pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;
285                 uint pci_clk_sel = porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;
286                 uint pci_speed = CONFIG_SYS_CLK_FREQ;   /* get_clock_freq() */
287
288                 printf("PCI: Host, %d bit, %s MHz, %s, %s\n",
289                         (pci_32) ? 32 : 64,
290                         (pci_speed == 33000000) ? "33" :
291                         (pci_speed == 66000000) ? "66" : "unknown",
292                         pci_clk_sel ? "sync" : "async",
293                         pci_arb ? "arbiter" : "external-arbiter");
294
295                 SET_STD_PCI_INFO(pci_info, 1);
296                 set_next_law(pci_info.mem_phys,
297                         law_size_bits(pci_info.mem_size), pci_info.law);
298                 set_next_law(pci_info.io_phys,
299                         law_size_bits(pci_info.io_size), pci_info.law);
300
301                 first_free_busno = fsl_pci_init_port(&pci_info,
302                                         &pci1_hose, first_free_busno);
303         } else {
304                 printf("PCI: disabled\n");
305         }
306
307         puts("\n");
308 #else
309         setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1); /* disable */
310 #endif
311
312         setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI2); /* disable PCI2 */
313
314         fsl_pcie_init_board(first_free_busno);
315 }
316 #endif
317
318 int board_eth_init(bd_t *bis)
319 {
320         tsec_standard_init(bis);
321         pci_eth_init(bis);
322         return 0;       /* otherwise cpu_eth_init gets run */
323 }
324
325 int last_stage_init(void)
326 {
327         return 0;
328 }
329
330 #if defined(CONFIG_OF_BOARD_SETUP)
331 void ft_board_setup(void *blob, bd_t *bd)
332 {
333         ft_cpu_setup(blob, bd);
334
335 #ifdef CONFIG_FSL_PCI_INIT
336         FT_FSL_PCI_SETUP;
337 #endif
338 }
339 #endif