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>
27 #include <asm/mpc85xx.h>
28 #include <asm/immap_85xx.h>
33 #include <syslib/ppc85xx_setup.h>
35 /* Return the amount of memory */
37 mpc85xx_find_end_of_memory(void)
41 binfo = (bd_t *) __res;
43 return binfo->bi_memsize;
46 /* The decrementer counts at the system (internal) clock freq divided by 8 */
48 mpc85xx_calibrate_decr(void)
50 bd_t *binfo = (bd_t *) __res;
51 unsigned int freq, divisor;
53 /* get the core frequency */
54 freq = binfo->bi_busfreq;
56 /* The timebase is updated every 8 bus clocks, HID0[SEL_TBCLK] = 0 */
58 tb_ticks_per_jiffy = freq / divisor / HZ;
59 tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);
61 /* Set the time base to zero */
65 /* Clear any pending timer interrupts */
66 mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
68 /* Enable decrementer interrupt */
69 mtspr(SPRN_TCR, TCR_DIE);
72 #ifdef CONFIG_SERIAL_8250
74 mpc85xx_early_serial_map(void)
76 struct uart_port serial_req;
77 bd_t *binfo = (bd_t *) __res;
78 phys_addr_t duart_paddr = binfo->bi_immr_base + MPC85xx_UART0_OFFSET;
80 /* Setup serial port access */
81 memset(&serial_req, 0, sizeof (serial_req));
82 serial_req.uartclk = binfo->bi_busfreq;
84 serial_req.irq = MPC85xx_IRQ_DUART;
85 serial_req.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
86 serial_req.iotype = SERIAL_IO_MEM;
87 serial_req.membase = ioremap(duart_paddr, MPC85xx_UART0_SIZE);
88 serial_req.mapbase = duart_paddr;
89 serial_req.regshift = 0;
91 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
92 gen550_init(0, &serial_req);
95 if (early_serial_setup(&serial_req) != 0)
96 printk("Early serial init of port 0 failed\n");
98 /* Assume early_serial_setup() doesn't modify serial_req */
99 duart_paddr = binfo->bi_immr_base + MPC85xx_UART1_OFFSET;
101 serial_req.mapbase = duart_paddr;
102 serial_req.membase = ioremap(duart_paddr, MPC85xx_UART1_SIZE);
104 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
105 gen550_init(1, &serial_req);
108 if (early_serial_setup(&serial_req) != 0)
109 printk("Early serial init of port 1 failed\n");
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 512M Phys:PCI 1:1 outbound mem window @ 0x80000000 */
173 pci->potar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;
174 pci->potear1 = 0x00000000;
175 pci->powbar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;
176 pci->powar1 = 0x8004401c; /* Enable, Mem R/W, 512M */
178 /* Setup 16M outboud IO windows @ 0xe2000000 */
179 pci->potar2 = 0x00000000;
180 pci->potear2 = 0x00000000;
181 pci->powbar2 = (MPC85XX_PCI1_IO_BASE >> 12) & 0x000fffff;
182 pci->powar2 = 0x80088017; /* Enable, IO R/W, 16M */
184 /* Setup 2G inbound Memory Window @ 0 */
185 pci->pitar1 = 0x00000000;
186 pci->piwbar1 = 0x00000000;
187 pci->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local
188 Mem, Snoop R/W, 2G */
192 extern int mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin);
193 extern int mpc85xx_exclude_device(u_char bus, u_char devfn);
197 mpc85xx_setup_pci2(struct pci_controller *hose)
199 volatile struct ccsr_pci *pci;
200 unsigned short temps;
201 bd_t *binfo = (bd_t *) __res;
203 pci = ioremap(binfo->bi_immr_base + MPC85xx_PCI2_OFFSET,
206 early_read_config_word(hose, 0, 0, PCI_COMMAND, &temps);
207 temps |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
208 early_write_config_word(hose, 0, 0, PCI_COMMAND, temps);
209 early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
211 /* Disable all windows (except powar0 since its ignored) */
220 /* Setup 512M Phys:PCI 1:1 outbound mem window @ 0xa0000000 */
221 pci->potar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;
222 pci->potear1 = 0x00000000;
223 pci->powbar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;
224 pci->powar1 = 0x8004401c; /* Enable, Mem R/W, 512M */
226 /* Setup 16M outboud IO windows @ 0xe3000000 */
227 pci->potar2 = 0x00000000;
228 pci->potear2 = 0x00000000;
229 pci->powbar2 = (MPC85XX_PCI2_IO_BASE >> 12) & 0x000fffff;
230 pci->powar2 = 0x80088017; /* Enable, IO R/W, 16M */
232 /* Setup 2G inbound Memory Window @ 0 */
233 pci->pitar1 = 0x00000000;
234 pci->piwbar1 = 0x00000000;
235 pci->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local
236 Mem, Snoop R/W, 2G */
238 #endif /* CONFIG_85xx_PCI2 */
241 mpc85xx_setup_hose(void)
243 struct pci_controller *hose_a;
244 #ifdef CONFIG_85xx_PCI2
245 struct pci_controller *hose_b;
247 bd_t *binfo = (bd_t *) __res;
249 hose_a = pcibios_alloc_controller();
254 ppc_md.pci_swizzle = common_swizzle;
255 ppc_md.pci_map_irq = mpc85xx_map_irq;
257 hose_a->first_busno = 0;
258 hose_a->bus_offset = 0;
259 hose_a->last_busno = 0xff;
261 setup_indirect_pci(hose_a, binfo->bi_immr_base + PCI1_CFG_ADDR_OFFSET,
262 binfo->bi_immr_base + PCI1_CFG_DATA_OFFSET);
263 hose_a->set_cfg_type = 1;
265 mpc85xx_setup_pci1(hose_a);
267 hose_a->pci_mem_offset = MPC85XX_PCI1_MEM_OFFSET;
268 hose_a->mem_space.start = MPC85XX_PCI1_LOWER_MEM;
269 hose_a->mem_space.end = MPC85XX_PCI1_UPPER_MEM;
271 hose_a->io_space.start = MPC85XX_PCI1_LOWER_IO;
272 hose_a->io_space.end = MPC85XX_PCI1_UPPER_IO;
273 hose_a->io_base_phys = MPC85XX_PCI1_IO_BASE;
276 (unsigned long) ioremap(MPC85XX_PCI1_IO_BASE,
277 MPC85XX_PCI1_IO_SIZE +
278 MPC85XX_PCI2_IO_SIZE);
281 (unsigned long) ioremap(MPC85XX_PCI1_IO_BASE,
282 MPC85XX_PCI1_IO_SIZE);
284 hose_a->io_base_virt = (void *) isa_io_base;
286 /* setup resources */
287 pci_init_resource(&hose_a->mem_resources[0],
288 MPC85XX_PCI1_LOWER_MEM,
289 MPC85XX_PCI1_UPPER_MEM,
290 IORESOURCE_MEM, "PCI1 host bridge");
292 pci_init_resource(&hose_a->io_resource,
293 MPC85XX_PCI1_LOWER_IO,
294 MPC85XX_PCI1_UPPER_IO,
295 IORESOURCE_IO, "PCI1 host bridge");
297 ppc_md.pci_exclude_device = mpc85xx_exclude_device;
299 hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);
302 hose_b = pcibios_alloc_controller();
307 hose_b->bus_offset = hose_a->last_busno + 1;
308 hose_b->first_busno = hose_a->last_busno + 1;
309 hose_b->last_busno = 0xff;
311 setup_indirect_pci(hose_b, binfo->bi_immr_base + PCI2_CFG_ADDR_OFFSET,
312 binfo->bi_immr_base + PCI2_CFG_DATA_OFFSET);
313 hose_b->set_cfg_type = 1;
315 mpc85xx_setup_pci2(hose_b);
317 hose_b->pci_mem_offset = MPC85XX_PCI2_MEM_OFFSET;
318 hose_b->mem_space.start = MPC85XX_PCI2_LOWER_MEM;
319 hose_b->mem_space.end = MPC85XX_PCI2_UPPER_MEM;
321 hose_b->io_space.start = MPC85XX_PCI2_LOWER_IO;
322 hose_b->io_space.end = MPC85XX_PCI2_UPPER_IO;
323 hose_b->io_base_phys = MPC85XX_PCI2_IO_BASE;
324 hose_b->io_base_virt = (void *) isa_io_base + MPC85XX_PCI1_IO_SIZE;
326 /* setup resources */
327 pci_init_resource(&hose_b->mem_resources[0],
328 MPC85XX_PCI2_LOWER_MEM,
329 MPC85XX_PCI2_UPPER_MEM,
330 IORESOURCE_MEM, "PCI2 host bridge");
332 pci_init_resource(&hose_b->io_resource,
333 MPC85XX_PCI2_LOWER_IO,
334 MPC85XX_PCI2_UPPER_IO,
335 IORESOURCE_IO, "PCI2 host bridge");
337 hose_b->last_busno = pciauto_bus_scan(hose_b, hose_b->first_busno);
341 #endif /* CONFIG_PCI */