2 * Ebony board specific routines
4 * Matt Porter <mporter@kernel.crashing.org>
5 * Copyright 2002-2005 MontaVista Software Inc.
7 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
8 * Copyright (c) 2003-2005 Zultys Technologies
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/stddef.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/errno.h>
20 #include <linux/reboot.h>
21 #include <linux/pci.h>
22 #include <linux/kdev_t.h>
23 #include <linux/types.h>
24 #include <linux/major.h>
25 #include <linux/blkdev.h>
26 #include <linux/console.h>
27 #include <linux/delay.h>
28 #include <linux/ide.h>
29 #include <linux/initrd.h>
30 #include <linux/seq_file.h>
31 #include <linux/root_dev.h>
32 #include <linux/tty.h>
33 #include <linux/serial.h>
34 #include <linux/serial_core.h>
36 #include <asm/system.h>
37 #include <asm/pgtable.h>
41 #include <asm/machdep.h>
43 #include <asm/pci-bridge.h>
46 #include <asm/bootinfo.h>
47 #include <asm/ppc4xx_pic.h>
48 #include <asm/ppcboot.h>
49 #include <asm/tlbflush.h>
51 #include <syslib/gen550.h>
52 #include <syslib/ibm440gp_common.h>
56 static struct ibm44x_clocks clocks __initdata;
59 * Ebony external IRQ triggering/polarity settings
61 unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
62 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ0: PCI slot 0 */
63 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ1: PCI slot 1 */
64 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ2: PCI slot 2 */
65 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ3: PCI slot 3 */
66 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ4: IRDA */
67 (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* IRQ5: SMI pushbutton */
68 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ6: PHYs */
69 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ7: AUX */
70 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ8: EXT */
71 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ9: EXT */
72 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ10: EXT */
73 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ11: EXT */
74 (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ12: EXT */
78 ebony_calibrate_decr(void)
83 * Determine system clock speed
85 * If we are on Rev. B silicon, then use
86 * default external system clock. If we are
87 * on Rev. C silicon then errata forces us to
88 * use the internal clock.
90 if (strcmp(cur_cpu_spec->cpu_name, "440GP Rev. B") == 0)
91 freq = EBONY_440GP_RB_SYSCLK;
93 freq = EBONY_440GP_RC_SYSCLK;
95 ibm44x_calibrate_decr(freq);
99 ebony_show_cpuinfo(struct seq_file *m)
101 seq_printf(m, "vendor\t\t: IBM\n");
102 seq_printf(m, "machine\t\t: Ebony\n");
108 ebony_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
110 static char pci_irq_table[][4] =
112 * PCI IDSEL/INTPIN->INTLINE
116 { 23, 23, 23, 23 }, /* IDSEL 1 - PCI Slot 0 */
117 { 24, 24, 24, 24 }, /* IDSEL 2 - PCI Slot 1 */
118 { 25, 25, 25, 25 }, /* IDSEL 3 - PCI Slot 2 */
119 { 26, 26, 26, 26 }, /* IDSEL 4 - PCI Slot 3 */
122 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
123 return PCI_IRQ_TABLE_LOOKUP;
126 #define PCIX_WRITEL(value, offset) \
127 (writel(value, pcix_reg_base + offset))
130 * FIXME: This is only here to "make it work". This will move
131 * to a ibm_pcix.c which will contain a generic IBM PCIX bridge
132 * configuration library. -Matt
135 ebony_setup_pcix(void)
137 void __iomem *pcix_reg_base;
139 pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX_REG_SIZE);
141 /* Disable all windows */
142 PCIX_WRITEL(0, PCIX0_POM0SA);
143 PCIX_WRITEL(0, PCIX0_POM1SA);
144 PCIX_WRITEL(0, PCIX0_POM2SA);
145 PCIX_WRITEL(0, PCIX0_PIM0SA);
146 PCIX_WRITEL(0, PCIX0_PIM1SA);
147 PCIX_WRITEL(0, PCIX0_PIM2SA);
149 /* Setup 2GB PLB->PCI outbound mem window (3_8000_0000->0_8000_0000) */
150 PCIX_WRITEL(0x00000003, PCIX0_POM0LAH);
151 PCIX_WRITEL(0x80000000, PCIX0_POM0LAL);
152 PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
153 PCIX_WRITEL(0x80000000, PCIX0_POM0PCIAL);
154 PCIX_WRITEL(0x80000001, PCIX0_POM0SA);
156 /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
157 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
158 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
159 PCIX_WRITEL(0x80000007, PCIX0_PIM0SA);
165 ebony_setup_hose(void)
167 struct pci_controller *hose;
169 /* Configure windows on the PCI-X host bridge */
172 hose = pcibios_alloc_controller();
177 hose->first_busno = 0;
178 hose->last_busno = 0xff;
180 hose->pci_mem_offset = EBONY_PCI_MEM_OFFSET;
182 pci_init_resource(&hose->io_resource,
188 pci_init_resource(&hose->mem_resources[0],
194 hose->io_space.start = EBONY_PCI_LOWER_IO;
195 hose->io_space.end = EBONY_PCI_UPPER_IO;
196 hose->mem_space.start = EBONY_PCI_LOWER_MEM;
197 hose->mem_space.end = EBONY_PCI_UPPER_MEM;
198 hose->io_base_virt = ioremap64(EBONY_PCI_IO_BASE, EBONY_PCI_IO_SIZE);
199 isa_io_base = (unsigned long)hose->io_base_virt;
201 setup_indirect_pci(hose,
202 EBONY_PCI_CFGA_PLB32,
203 EBONY_PCI_CFGD_PLB32);
204 hose->set_cfg_type = 1;
206 hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
208 ppc_md.pci_swizzle = common_swizzle;
209 ppc_md.pci_map_irq = ebony_map_irq;
215 ebony_early_serial_map(void)
217 struct uart_port port;
219 /* Setup ioremapped serial port access */
220 memset(&port, 0, sizeof(port));
221 port.membase = ioremap64(PPC440GP_UART0_ADDR, 8);
223 port.uartclk = clocks.uart0;
225 port.iotype = UPIO_MEM;
226 port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
229 if (early_serial_setup(&port) != 0) {
230 printk("Early serial init of port 0 failed\n");
233 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
234 /* Configure debug serial access */
235 gen550_init(0, &port);
237 /* Purge TLB entry added in head_44x.S for early serial access */
238 _tlbie(UART0_IO_BASE);
241 port.membase = ioremap64(PPC440GP_UART1_ADDR, 8);
243 port.uartclk = clocks.uart1;
246 if (early_serial_setup(&port) != 0) {
247 printk("Early serial init of port 1 failed\n");
250 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
251 /* Configure debug serial access */
252 gen550_init(1, &port);
257 ebony_setup_arch(void)
260 struct ocp_func_emac_data *emacdata;
262 /* Set mac_addr for each EMAC */
263 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
264 emacdata = def->additions;
265 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
266 emacdata->phy_mode = PHY_MODE_RMII;
267 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
269 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 1);
270 emacdata = def->additions;
271 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
272 emacdata->phy_mode = PHY_MODE_RMII;
273 memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6);
276 * Determine various clocks.
277 * To be completely correct we should get SysClk
278 * from FPGA, because it can be changed by on-board switches
281 ibm440gp_get_clocks(&clocks, 33333333, 6 * 1843200);
282 ocp_sys_info.opb_bus_freq = clocks.opb;
284 /* Setup TODC access */
285 TODC_INIT(TODC_TYPE_DS1743,
288 ioremap64(EBONY_RTC_ADDR, EBONY_RTC_SIZE),
291 /* init to some ~sane value until calibrate_delay() runs */
292 loops_per_jiffy = 50000000/HZ;
294 /* Setup PCI host bridge */
297 #ifdef CONFIG_BLK_DEV_INITRD
299 ROOT_DEV = Root_RAM0;
302 #ifdef CONFIG_ROOT_NFS
305 ROOT_DEV = Root_HDA1;
308 ebony_early_serial_map();
310 /* Identify the system */
311 printk("IBM Ebony port (MontaVista Software, Inc. (source@mvista.com))\n");
314 void __init platform_init(unsigned long r3, unsigned long r4,
315 unsigned long r5, unsigned long r6, unsigned long r7)
317 ibm44x_platform_init(r3, r4, r5, r6, r7);
319 ppc_md.setup_arch = ebony_setup_arch;
320 ppc_md.show_cpuinfo = ebony_show_cpuinfo;
321 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
323 ppc_md.calibrate_decr = ebony_calibrate_decr;
324 ppc_md.time_init = todc_time_init;
325 ppc_md.set_rtc_time = todc_set_rtc_time;
326 ppc_md.get_rtc_time = todc_get_rtc_time;
328 ppc_md.nvram_read_val = todc_direct_read_val;
329 ppc_md.nvram_write_val = todc_direct_write_val;
331 ppc_md.early_serial_map = ebony_early_serial_map;