2 * arch/ppc/syslib/ppc85xx_setup.c
4 * MPC85XX common board code
6 * Maintainer: Kumar Gala <kumar.gala@freescale.com>
8 * Copyright 2004 Freescale Semiconductor Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/config.h>
17 #include <linux/types.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/pci.h>
21 #include <linux/serial.h>
22 #include <linux/tty.h> /* for linux/serial_core.h */
23 #include <linux/serial_core.h>
24 #include <linux/serial_8250.h>
28 #include <asm/mpc85xx.h>
29 #include <asm/immap_85xx.h>
31 #include <asm/ppc_sys.h>
34 #include <syslib/ppc85xx_setup.h>
36 /* Return the amount of memory */
38 mpc85xx_find_end_of_memory(void)
42 binfo = (bd_t *) __res;
44 return binfo->bi_memsize;
47 /* The decrementer counts at the system (internal) clock freq divided by 8 */
49 mpc85xx_calibrate_decr(void)
51 bd_t *binfo = (bd_t *) __res;
52 unsigned int freq, divisor;
54 /* get the core frequency */
55 freq = binfo->bi_busfreq;
57 /* The timebase is updated every 8 bus clocks, HID0[SEL_TBCLK] = 0 */
59 tb_ticks_per_jiffy = freq / divisor / HZ;
60 tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);
62 /* Set the time base to zero */
66 /* Clear any pending timer interrupts */
67 mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
69 /* Enable decrementer interrupt */
70 mtspr(SPRN_TCR, TCR_DIE);
73 #ifdef CONFIG_SERIAL_8250
75 mpc85xx_early_serial_map(void)
77 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
78 struct uart_port serial_req;
80 struct plat_serial8250_port *pdata;
81 bd_t *binfo = (bd_t *) __res;
82 pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(MPC85xx_DUART);
84 /* Setup serial port access */
85 pdata[0].uartclk = binfo->bi_busfreq;
86 pdata[0].mapbase += binfo->bi_immr_base;
87 pdata[0].membase = ioremap(pdata[0].mapbase, MPC85xx_UART0_SIZE);
89 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
90 memset(&serial_req, 0, sizeof (serial_req));
91 serial_req.iotype = SERIAL_IO_MEM;
92 serial_req.mapbase = pdata[0].mapbase;
93 serial_req.membase = pdata[0].membase;
94 serial_req.regshift = 0;
96 gen550_init(0, &serial_req);
99 pdata[1].uartclk = binfo->bi_busfreq;
100 pdata[1].mapbase += binfo->bi_immr_base;
101 pdata[1].membase = ioremap(pdata[1].mapbase, MPC85xx_UART0_SIZE);
103 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
104 /* Assume gen550_init() doesn't modify serial_req */
105 serial_req.mapbase = pdata[1].mapbase;
106 serial_req.membase = pdata[1].membase;
108 gen550_init(1, &serial_req);
114 mpc85xx_restart(char *cmd)
121 mpc85xx_power_off(void)
136 mpc85xx_setup_pci1(struct pci_controller *hose)
138 volatile struct ccsr_pci *pci;
139 volatile struct ccsr_guts *guts;
140 unsigned short temps;
141 bd_t *binfo = (bd_t *) __res;
143 pci = ioremap(binfo->bi_immr_base + MPC85xx_PCI1_OFFSET,
146 guts = ioremap(binfo->bi_immr_base + MPC85xx_GUTS_OFFSET,
149 early_read_config_word(hose, 0, 0, PCI_COMMAND, &temps);
150 temps |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
151 early_write_config_word(hose, 0, 0, PCI_COMMAND, temps);
153 #define PORDEVSR_PCI (0x00800000) /* PCI Mode */
154 if (guts->pordevsr & PORDEVSR_PCI) {
155 early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
158 temps = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
159 | PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
160 early_write_config_word(hose, 0, 0, PCIX_COMMAND, temps);
163 /* Disable all windows (except powar0 since its ignored) */
172 /* Setup Phys:PCI 1:1 outbound mem window @ MPC85XX_PCI1_LOWER_MEM */
173 pci->potar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;
174 pci->potear1 = 0x00000000;
175 pci->powbar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;
176 /* Enable, Mem R/W */
177 pci->powar1 = 0x80044000 |
178 (__ilog2(MPC85XX_PCI1_UPPER_MEM - MPC85XX_PCI1_LOWER_MEM + 1) - 1);
180 /* Setup outboud IO windows @ MPC85XX_PCI1_IO_BASE */
181 pci->potar2 = 0x00000000;
182 pci->potear2 = 0x00000000;
183 pci->powbar2 = (MPC85XX_PCI1_IO_BASE >> 12) & 0x000fffff;
185 pci->powar2 = 0x80088000 | (__ilog2(MPC85XX_PCI1_IO_SIZE) - 1);
187 /* Setup 2G inbound Memory Window @ 0 */
188 pci->pitar1 = 0x00000000;
189 pci->piwbar1 = 0x00000000;
190 pci->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local
191 Mem, Snoop R/W, 2G */
195 extern int mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin);
196 extern int mpc85xx_exclude_device(u_char bus, u_char devfn);
198 #ifdef CONFIG_85xx_PCI2
200 mpc85xx_setup_pci2(struct pci_controller *hose)
202 volatile struct ccsr_pci *pci;
203 unsigned short temps;
204 bd_t *binfo = (bd_t *) __res;
206 pci = ioremap(binfo->bi_immr_base + MPC85xx_PCI2_OFFSET,
209 early_read_config_word(hose, hose->bus_offset, 0, PCI_COMMAND, &temps);
210 temps |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
211 early_write_config_word(hose, hose->bus_offset, 0, PCI_COMMAND, temps);
212 early_write_config_byte(hose, hose->bus_offset, 0, PCI_LATENCY_TIMER, 0x80);
214 /* Disable all windows (except powar0 since its ignored) */
223 /* Setup Phys:PCI 1:1 outbound mem window @ MPC85XX_PCI2_LOWER_MEM */
224 pci->potar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;
225 pci->potear1 = 0x00000000;
226 pci->powbar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;
227 /* Enable, Mem R/W */
228 pci->powar1 = 0x80044000 |
229 (__ilog2(MPC85XX_PCI1_UPPER_MEM - MPC85XX_PCI1_LOWER_MEM + 1) - 1);
231 /* Setup outboud IO windows @ MPC85XX_PCI2_IO_BASE */
232 pci->potar2 = 0x00000000;
233 pci->potear2 = 0x00000000;
234 pci->powbar2 = (MPC85XX_PCI2_IO_BASE >> 12) & 0x000fffff;
236 pci->powar2 = 0x80088000 | (__ilog2(MPC85XX_PCI1_IO_SIZE) - 1);
238 /* Setup 2G inbound Memory Window @ 0 */
239 pci->pitar1 = 0x00000000;
240 pci->piwbar1 = 0x00000000;
241 pci->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local
242 Mem, Snoop R/W, 2G */
244 #endif /* CONFIG_85xx_PCI2 */
246 int mpc85xx_pci1_last_busno = 0;
249 mpc85xx_setup_hose(void)
251 struct pci_controller *hose_a;
252 #ifdef CONFIG_85xx_PCI2
253 struct pci_controller *hose_b;
255 bd_t *binfo = (bd_t *) __res;
257 hose_a = pcibios_alloc_controller();
262 ppc_md.pci_swizzle = common_swizzle;
263 ppc_md.pci_map_irq = mpc85xx_map_irq;
265 hose_a->first_busno = 0;
266 hose_a->bus_offset = 0;
267 hose_a->last_busno = 0xff;
269 setup_indirect_pci(hose_a, binfo->bi_immr_base + PCI1_CFG_ADDR_OFFSET,
270 binfo->bi_immr_base + PCI1_CFG_DATA_OFFSET);
271 hose_a->set_cfg_type = 1;
273 mpc85xx_setup_pci1(hose_a);
275 hose_a->pci_mem_offset = MPC85XX_PCI1_MEM_OFFSET;
276 hose_a->mem_space.start = MPC85XX_PCI1_LOWER_MEM;
277 hose_a->mem_space.end = MPC85XX_PCI1_UPPER_MEM;
279 hose_a->io_space.start = MPC85XX_PCI1_LOWER_IO;
280 hose_a->io_space.end = MPC85XX_PCI1_UPPER_IO;
281 hose_a->io_base_phys = MPC85XX_PCI1_IO_BASE;
282 #ifdef CONFIG_85xx_PCI2
284 (unsigned long) ioremap(MPC85XX_PCI1_IO_BASE,
285 MPC85XX_PCI1_IO_SIZE +
286 MPC85XX_PCI2_IO_SIZE);
289 (unsigned long) ioremap(MPC85XX_PCI1_IO_BASE,
290 MPC85XX_PCI1_IO_SIZE);
292 hose_a->io_base_virt = (void *) isa_io_base;
294 /* setup resources */
295 pci_init_resource(&hose_a->mem_resources[0],
296 MPC85XX_PCI1_LOWER_MEM,
297 MPC85XX_PCI1_UPPER_MEM,
298 IORESOURCE_MEM, "PCI1 host bridge");
300 pci_init_resource(&hose_a->io_resource,
301 MPC85XX_PCI1_LOWER_IO,
302 MPC85XX_PCI1_UPPER_IO,
303 IORESOURCE_IO, "PCI1 host bridge");
305 ppc_md.pci_exclude_device = mpc85xx_exclude_device;
307 hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);
309 #ifdef CONFIG_85xx_PCI2
310 hose_b = pcibios_alloc_controller();
315 hose_b->bus_offset = hose_a->last_busno + 1;
316 hose_b->first_busno = hose_a->last_busno + 1;
317 hose_b->last_busno = 0xff;
319 setup_indirect_pci(hose_b, binfo->bi_immr_base + PCI2_CFG_ADDR_OFFSET,
320 binfo->bi_immr_base + PCI2_CFG_DATA_OFFSET);
321 hose_b->set_cfg_type = 1;
323 mpc85xx_setup_pci2(hose_b);
325 hose_b->pci_mem_offset = MPC85XX_PCI2_MEM_OFFSET;
326 hose_b->mem_space.start = MPC85XX_PCI2_LOWER_MEM;
327 hose_b->mem_space.end = MPC85XX_PCI2_UPPER_MEM;
329 hose_b->io_space.start = MPC85XX_PCI2_LOWER_IO;
330 hose_b->io_space.end = MPC85XX_PCI2_UPPER_IO;
331 hose_b->io_base_phys = MPC85XX_PCI2_IO_BASE;
332 hose_b->io_base_virt = (void *) isa_io_base + MPC85XX_PCI1_IO_SIZE;
334 /* setup resources */
335 pci_init_resource(&hose_b->mem_resources[0],
336 MPC85XX_PCI2_LOWER_MEM,
337 MPC85XX_PCI2_UPPER_MEM,
338 IORESOURCE_MEM, "PCI2 host bridge");
340 pci_init_resource(&hose_b->io_resource,
341 MPC85XX_PCI2_LOWER_IO,
342 MPC85XX_PCI2_UPPER_IO,
343 IORESOURCE_IO, "PCI2 host bridge");
345 hose_b->last_busno = pciauto_bus_scan(hose_b, hose_b->first_busno);
347 /* let board code know what the last bus number was on PCI1 */
348 mpc85xx_pci1_last_busno = hose_a->last_busno;
352 #endif /* CONFIG_PCI */