2 * arch/ppc/platforms/4xx/ebony.c
4 * Ebony board specific routines
6 * Matt Porter <mporter@kernel.crashing.org>
7 * Copyright 2002-2005 MontaVista Software Inc.
9 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
10 * Copyright (c) 2003-2005 Zultys Technologies
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
18 #include <linux/config.h>
19 #include <linux/stddef.h>
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/errno.h>
23 #include <linux/reboot.h>
24 #include <linux/pci.h>
25 #include <linux/kdev_t.h>
26 #include <linux/types.h>
27 #include <linux/major.h>
28 #include <linux/blkdev.h>
29 #include <linux/console.h>
30 #include <linux/delay.h>
31 #include <linux/ide.h>
32 #include <linux/initrd.h>
33 #include <linux/irq.h>
34 #include <linux/seq_file.h>
35 #include <linux/root_dev.h>
36 #include <linux/tty.h>
37 #include <linux/serial.h>
38 #include <linux/serial_core.h>
40 #include <asm/system.h>
41 #include <asm/pgtable.h>
45 #include <asm/machdep.h>
47 #include <asm/pci-bridge.h>
50 #include <asm/bootinfo.h>
51 #include <asm/ppc4xx_pic.h>
52 #include <asm/ppcboot.h>
53 #include <asm/tlbflush.h>
55 #include <syslib/gen550.h>
56 #include <syslib/ibm440gp_common.h>
60 static struct ibm44x_clocks clocks __initdata;
63 * Ebony external IRQ triggering/polarity settings
65 unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
66 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ0: PCI slot 0 */
67 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ1: PCI slot 1 */
68 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ2: PCI slot 2 */
69 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ3: PCI slot 3 */
70 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ4: IRDA */
71 (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* IRQ5: SMI pushbutton */
72 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ6: PHYs */
73 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ7: AUX */
74 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ8: EXT */
75 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ9: EXT */
76 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ10: EXT */
77 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ11: EXT */
78 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ12: EXT */
82 ebony_calibrate_decr(void)
87 * Determine system clock speed
89 * If we are on Rev. B silicon, then use
90 * default external system clock. If we are
91 * on Rev. C silicon then errata forces us to
92 * use the internal clock.
94 if (strcmp(cur_cpu_spec[0]->cpu_name, "440GP Rev. B") == 0)
95 freq = EBONY_440GP_RB_SYSCLK;
97 freq = EBONY_440GP_RC_SYSCLK;
99 ibm44x_calibrate_decr(freq);
103 ebony_show_cpuinfo(struct seq_file *m)
105 seq_printf(m, "vendor\t\t: IBM\n");
106 seq_printf(m, "machine\t\t: Ebony\n");
112 ebony_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
114 static char pci_irq_table[][4] =
116 * PCI IDSEL/INTPIN->INTLINE
120 { 23, 23, 23, 23 }, /* IDSEL 1 - PCI Slot 0 */
121 { 24, 24, 24, 24 }, /* IDSEL 2 - PCI Slot 1 */
122 { 25, 25, 25, 25 }, /* IDSEL 3 - PCI Slot 2 */
123 { 26, 26, 26, 26 }, /* IDSEL 4 - PCI Slot 3 */
126 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
127 return PCI_IRQ_TABLE_LOOKUP;
130 #define PCIX_WRITEL(value, offset) \
131 (writel(value, pcix_reg_base + offset))
134 * FIXME: This is only here to "make it work". This will move
135 * to a ibm_pcix.c which will contain a generic IBM PCIX bridge
136 * configuration library. -Matt
139 ebony_setup_pcix(void)
141 void __iomem *pcix_reg_base;
143 pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX_REG_SIZE);
145 /* Disable all windows */
146 PCIX_WRITEL(0, PCIX0_POM0SA);
147 PCIX_WRITEL(0, PCIX0_POM1SA);
148 PCIX_WRITEL(0, PCIX0_POM2SA);
149 PCIX_WRITEL(0, PCIX0_PIM0SA);
150 PCIX_WRITEL(0, PCIX0_PIM1SA);
151 PCIX_WRITEL(0, PCIX0_PIM2SA);
153 /* Setup 2GB PLB->PCI outbound mem window (3_8000_0000->0_8000_0000) */
154 PCIX_WRITEL(0x00000003, PCIX0_POM0LAH);
155 PCIX_WRITEL(0x80000000, PCIX0_POM0LAL);
156 PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
157 PCIX_WRITEL(0x80000000, PCIX0_POM0PCIAL);
158 PCIX_WRITEL(0x80000001, PCIX0_POM0SA);
160 /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
161 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
162 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
163 PCIX_WRITEL(0x80000007, PCIX0_PIM0SA);
169 ebony_setup_hose(void)
171 struct pci_controller *hose;
173 /* Configure windows on the PCI-X host bridge */
176 hose = pcibios_alloc_controller();
181 hose->first_busno = 0;
182 hose->last_busno = 0xff;
184 hose->pci_mem_offset = EBONY_PCI_MEM_OFFSET;
186 pci_init_resource(&hose->io_resource,
192 pci_init_resource(&hose->mem_resources[0],
198 hose->io_space.start = EBONY_PCI_LOWER_IO;
199 hose->io_space.end = EBONY_PCI_UPPER_IO;
200 hose->mem_space.start = EBONY_PCI_LOWER_MEM;
201 hose->mem_space.end = EBONY_PCI_UPPER_MEM;
202 hose->io_base_virt = ioremap64(EBONY_PCI_IO_BASE, EBONY_PCI_IO_SIZE);
203 isa_io_base = (unsigned long)hose->io_base_virt;
205 setup_indirect_pci(hose,
206 EBONY_PCI_CFGA_PLB32,
207 EBONY_PCI_CFGD_PLB32);
208 hose->set_cfg_type = 1;
210 hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
212 ppc_md.pci_swizzle = common_swizzle;
213 ppc_md.pci_map_irq = ebony_map_irq;
219 ebony_early_serial_map(void)
221 struct uart_port port;
223 /* Setup ioremapped serial port access */
224 memset(&port, 0, sizeof(port));
225 port.membase = ioremap64(PPC440GP_UART0_ADDR, 8);
227 port.uartclk = clocks.uart0;
229 port.iotype = SERIAL_IO_MEM;
230 port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
233 if (early_serial_setup(&port) != 0) {
234 printk("Early serial init of port 0 failed\n");
237 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
238 /* Configure debug serial access */
239 gen550_init(0, &port);
241 /* Purge TLB entry added in head_44x.S for early serial access */
242 _tlbie(UART0_IO_BASE);
245 port.membase = ioremap64(PPC440GP_UART1_ADDR, 8);
247 port.uartclk = clocks.uart1;
250 if (early_serial_setup(&port) != 0) {
251 printk("Early serial init of port 1 failed\n");
254 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
255 /* Configure debug serial access */
256 gen550_init(1, &port);
261 ebony_setup_arch(void)
264 struct ocp_func_emac_data *emacdata;
266 /* Set mac_addr for each EMAC */
267 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
268 emacdata = def->additions;
269 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
270 emacdata->phy_mode = PHY_MODE_RMII;
271 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
273 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 1);
274 emacdata = def->additions;
275 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
276 emacdata->phy_mode = PHY_MODE_RMII;
277 memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6);
280 * Determine various clocks.
281 * To be completely correct we should get SysClk
282 * from FPGA, because it can be changed by on-board switches
285 ibm440gp_get_clocks(&clocks, 33333333, 6 * 1843200);
286 ocp_sys_info.opb_bus_freq = clocks.opb;
288 /* Setup TODC access */
289 TODC_INIT(TODC_TYPE_DS1743,
292 ioremap64(EBONY_RTC_ADDR, EBONY_RTC_SIZE),
295 /* init to some ~sane value until calibrate_delay() runs */
296 loops_per_jiffy = 50000000/HZ;
298 /* Setup PCI host bridge */
301 #ifdef CONFIG_BLK_DEV_INITRD
303 ROOT_DEV = Root_RAM0;
306 #ifdef CONFIG_ROOT_NFS
309 ROOT_DEV = Root_HDA1;
312 ebony_early_serial_map();
314 /* Identify the system */
315 printk("IBM Ebony port (MontaVista Software, Inc. (source@mvista.com))\n");
318 void __init platform_init(unsigned long r3, unsigned long r4,
319 unsigned long r5, unsigned long r6, unsigned long r7)
321 parse_bootinfo(find_bootinfo());
324 * If we were passed in a board information, copy it into the
325 * residual data area.
328 __res = *(bd_t *)(r3 + KERNELBASE);
330 ibm44x_platform_init();
332 ppc_md.setup_arch = ebony_setup_arch;
333 ppc_md.show_cpuinfo = ebony_show_cpuinfo;
334 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
336 ppc_md.calibrate_decr = ebony_calibrate_decr;
337 ppc_md.time_init = todc_time_init;
338 ppc_md.set_rtc_time = todc_set_rtc_time;
339 ppc_md.get_rtc_time = todc_get_rtc_time;
341 ppc_md.nvram_read_val = todc_direct_read_val;
342 ppc_md.nvram_write_val = todc_direct_write_val;
344 ppc_md.early_serial_map = ebony_early_serial_map;