2 * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <asm/global_data.h>
30 #include <asm/mpc8349_pci.h>
32 #if defined(CONFIG_OF_FLAT_TREE)
34 #elif defined(CONFIG_OF_LIBFDT)
36 #include <fdt_support.h>
39 DECLARE_GLOBAL_DATA_PTR;
41 /* System RAM mapped to PCI space */
42 #define CONFIG_PCI_SYS_MEM_BUS CFG_SDRAM_BASE
43 #define CONFIG_PCI_SYS_MEM_PHYS CFG_SDRAM_BASE
45 #ifndef CONFIG_PCI_PNP
46 static struct pci_config_table pci_mpc8349itx_config_table[] = {
54 pci_cfgfunc_config_device,
58 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}
64 static struct pci_controller pci_hose[] = {
66 #ifndef CONFIG_PCI_PNP
67 config_table:pci_mpc8349itx_config_table,
71 #ifndef CONFIG_PCI_PNP
72 config_table:pci_mpc8349itx_config_table,
77 /**************************************************************************
80 * NOTICE: PCI2 is not currently supported
83 void pci_init_board(void)
85 volatile immap_t *immr;
86 volatile clk83xx_t *clk;
87 volatile law83xx_t *pci_law;
88 volatile pot83xx_t *pci_pot;
89 volatile pcictrl83xx_t *pci_ctrl;
90 volatile pciconf83xx_t *pci_conf;
95 struct pci_controller *hose;
97 immr = (immap_t *) CFG_IMMR;
98 clk = (clk83xx_t *) & immr->clk;
99 pci_law = immr->sysconf.pcilaw;
100 pci_pot = immr->ios.pot;
101 pci_ctrl = immr->pci_ctrl;
102 pci_conf = immr->pci_conf;
107 * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
113 #ifdef CONFIG_HARD_I2C
115 /* Read the PCI_M66EN jumper setting */
116 if ((i2c_read(CFG_I2C_8574_ADDR2, 0, 0, ®8, sizeof(reg8)) == 0) ||
117 (i2c_read(CFG_I2C_8574A_ADDR2, 0, 0, ®8, sizeof(reg8)) == 0)) {
118 if (reg8 & I2C_8574_PCI66)
119 clk->occr = 0xff000000; /* 66 MHz PCI */
121 clk->occr = 0xff600001; /* 33 MHz PCI */
123 clk->occr = 0xff600001; /* 33 MHz PCI */
126 clk->occr = 0xff000000; /* 66 MHz PCI */
132 * Release PCI RST Output signal
138 #ifdef CONFIG_MPC83XX_PCI2
144 /* We need to wait at least a 1sec based on PCI specs */
148 for (i = 0; i < 1000; i++)
153 * Configure PCI Local Access Windows
155 pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
156 pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
158 pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
159 pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;
162 * Configure PCI Outbound Translation Windows
165 /* PCI1 mem space - prefetch */
166 pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
167 pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
168 pci_pot[0].pocmr = POCMR_EN | POCMR_PREFETCH_EN | POCMR_CM_256M;
171 pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
172 pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
173 pci_pot[1].pocmr = POCMR_EN | POCMR_IO | POCMR_CM_16M;
175 /* PCI1 mmio - non-prefetch mem space */
176 pci_pot[2].potar = (CFG_PCI1_MMIO_BASE >> 12) & POTAR_TA_MASK;
177 pci_pot[2].pobar = (CFG_PCI1_MMIO_PHYS >> 12) & POBAR_BA_MASK;
178 pci_pot[2].pocmr = POCMR_EN | POCMR_CM_256M;
181 * Configure PCI Inbound Translation Windows
184 /* we need RAM mapped to PCI space for the devices to
185 * access main memory */
186 pci_ctrl[0].pitar1 = 0x0;
187 pci_ctrl[0].pibar1 = 0x0;
188 pci_ctrl[0].piebar1 = 0x0;
189 pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
190 PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);
192 hose->first_busno = 0;
193 hose->last_busno = 0xff;
195 /* PCI memory prefetch space */
196 pci_set_region(hose->regions + 0,
199 CFG_PCI1_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH);
201 /* PCI memory space */
202 pci_set_region(hose->regions + 1,
204 CFG_PCI1_MMIO_PHYS, CFG_PCI1_MMIO_SIZE, PCI_REGION_MEM);
207 pci_set_region(hose->regions + 2,
209 CFG_PCI1_IO_PHYS, CFG_PCI1_IO_SIZE, PCI_REGION_IO);
211 /* System memory space */
212 pci_set_region(hose->regions + 3,
213 CONFIG_PCI_SYS_MEM_BUS,
214 CONFIG_PCI_SYS_MEM_PHYS,
215 gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY);
217 hose->region_count = 4;
219 pci_setup_indirect(hose,
220 (CFG_IMMR + 0x8300), (CFG_IMMR + 0x8304));
222 pci_register_hose(hose);
225 * Write to Command register
228 dev = PCI_BDF(hose->first_busno, 0, 0);
229 pci_hose_read_config_word(hose, dev, PCI_COMMAND, ®16);
230 reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
231 pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
234 * Clear non-reserved bits in status register.
236 pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
237 pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
238 pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
240 #ifdef CONFIG_PCI_SCAN_SHOW
241 printf("PCI: Bus Dev VenId DevId Class Int\n");
246 hose->last_busno = pci_hose_scan(hose);
248 #ifdef CONFIG_MPC83XX_PCI2
252 * Configure PCI Outbound Translation Windows
255 /* PCI2 mem space - prefetch */
256 pci_pot[3].potar = (CFG_PCI2_MEM_BASE >> 12) & POTAR_TA_MASK;
257 pci_pot[3].pobar = (CFG_PCI2_MEM_PHYS >> 12) & POBAR_BA_MASK;
258 pci_pot[3].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_PREFETCH_EN | POCMR_CM_256M;
261 pci_pot[4].potar = (CFG_PCI2_IO_BASE >> 12) & POTAR_TA_MASK;
262 pci_pot[4].pobar = (CFG_PCI2_IO_PHYS >> 12) & POBAR_BA_MASK;
263 pci_pot[4].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_IO | POCMR_CM_16M;
265 /* PCI2 mmio - non-prefetch mem space */
266 pci_pot[5].potar = (CFG_PCI2_MMIO_BASE >> 12) & POTAR_TA_MASK;
267 pci_pot[5].pobar = (CFG_PCI2_MMIO_PHYS >> 12) & POBAR_BA_MASK;
268 pci_pot[5].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_CM_256M;
271 * Configure PCI Inbound Translation Windows
274 /* we need RAM mapped to PCI space for the devices to
275 * access main memory */
276 pci_ctrl[1].pitar1 = 0x0;
277 pci_ctrl[1].pibar1 = 0x0;
278 pci_ctrl[1].piebar1 = 0x0;
280 PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP |
281 (__ilog2(gd->ram_size) - 1);
283 hose->first_busno = pci_hose[0].last_busno + 1;
284 hose->last_busno = 0xff;
286 /* PCI memory prefetch space */
287 pci_set_region(hose->regions + 0,
290 CFG_PCI2_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH);
292 /* PCI memory space */
293 pci_set_region(hose->regions + 1,
295 CFG_PCI2_MMIO_PHYS, CFG_PCI2_MMIO_SIZE, PCI_REGION_MEM);
298 pci_set_region(hose->regions + 2,
300 CFG_PCI2_IO_PHYS, CFG_PCI2_IO_SIZE, PCI_REGION_IO);
302 /* System memory space */
303 pci_set_region(hose->regions + 3,
304 CONFIG_PCI_SYS_MEM_BUS,
305 CONFIG_PCI_SYS_MEM_PHYS,
306 gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY);
308 hose->region_count = 4;
310 pci_setup_indirect(hose,
311 (CFG_IMMR + 0x8380), (CFG_IMMR + 0x8384));
313 pci_register_hose(hose);
316 * Write to Command register
319 dev = PCI_BDF(hose->first_busno, 0, 0);
320 pci_hose_read_config_word(hose, dev, PCI_COMMAND, ®16);
321 reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
322 pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
325 * Clear non-reserved bits in status register.
327 pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
328 pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
329 pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
334 hose->last_busno = pci_hose_scan(hose);
338 #if defined(CONFIG_OF_LIBFDT)
339 void ft_pci_setup(void *blob, bd_t *bd)
345 nodeoffset = fdt_path_offset(blob, "/aliases");
346 if (nodeoffset >= 0) {
347 path = fdt_getprop(blob, nodeoffset, "pci0", NULL);
349 tmp[0] = cpu_to_be32(pci_hose[0].first_busno);
350 tmp[1] = cpu_to_be32(pci_hose[0].last_busno);
351 do_fixup_by_path(blob, path, "bus-range",
352 &tmp, sizeof(tmp), 1);
354 tmp[0] = cpu_to_be32(gd->pci_clk);
355 do_fixup_by_path(blob, path, "clock-frequency",
356 &tmp, sizeof(tmp[0]), 1);
358 #ifdef CONFIG_MPC83XX_PCI2
359 path = fdt_getprop(blob, nodeoffset, "pci1", NULL);
361 tmp[0] = cpu_to_be32(pci_hose[0].first_busno);
362 tmp[1] = cpu_to_be32(pci_hose[0].last_busno);
363 do_fixup_by_path(blob, path, "bus-range",
364 &tmp, sizeof(tmp), 1);
366 tmp[0] = cpu_to_be32(gd->pci_clk);
367 do_fixup_by_path(blob, path, "clock-frequency",
368 &tmp, sizeof(tmp[0]), 1);
373 #elif defined(CONFIG_OF_FLAT_TREE)
375 ft_pci_setup(void *blob, bd_t *bd)
380 p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8500/bus-range", &len);
382 p[0] = pci_hose[0].first_busno;
383 p[1] = pci_hose[0].last_busno;
386 #ifdef CONFIG_MPC83XX_PCI2
387 p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8600/bus-range", &len);
389 p[0] = pci_hose[1].first_busno;
390 p[1] = pci_hose[1].last_busno;
394 #endif /* CONFIG_OF_FLAT_TREE */
395 #endif /* CONFIG_PCI */