2 * arch/ppc/platforms/4xx/luan.c
4 * Luan board specific routines
6 * Matt Porter <mporter@kernel.crashing.org>
8 * Copyright 2004-2005 MontaVista Software 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/stddef.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/reboot.h>
22 #include <linux/pci.h>
23 #include <linux/kdev_t.h>
24 #include <linux/types.h>
25 #include <linux/major.h>
26 #include <linux/blkdev.h>
27 #include <linux/console.h>
28 #include <linux/delay.h>
29 #include <linux/ide.h>
30 #include <linux/initrd.h>
31 #include <linux/irq.h>
32 #include <linux/seq_file.h>
33 #include <linux/root_dev.h>
34 #include <linux/tty.h>
35 #include <linux/serial.h>
36 #include <linux/serial_core.h>
38 #include <asm/system.h>
39 #include <asm/pgtable.h>
43 #include <asm/machdep.h>
45 #include <asm/pci-bridge.h>
48 #include <asm/bootinfo.h>
49 #include <asm/ppc4xx_pic.h>
50 #include <asm/ppcboot.h>
52 #include <syslib/ibm44x_common.h>
53 #include <syslib/ibm440gx_common.h>
54 #include <syslib/ibm440sp_common.h>
57 * This is a horrible kludge, we eventually need to abstract this
58 * generic PHY stuff, so the standard phy mode defines can be
59 * easily used from arch code.
61 #include "../../../../drivers/net/ibm_emac/ibm_emac_phy.h"
65 static struct ibm44x_clocks clocks __initdata;
68 luan_calibrate_decr(void)
72 if (mfspr(SPRN_CCR1) & CCR1_TCS)
77 ibm44x_calibrate_decr(freq);
81 luan_show_cpuinfo(struct seq_file *m)
83 seq_printf(m, "vendor\t\t: IBM\n");
84 seq_printf(m, "machine\t\t: PPC440SP EVB (Luan)\n");
90 luan_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
92 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
94 /* PCIX0 in adapter mode, no host interrupt routing */
97 if (hose->index == 0) {
98 static char pci_irq_table[][4] =
100 * PCI IDSEL/INTPIN->INTLINE
104 { 49, 49, 49, 49 }, /* IDSEL 1 - PCIX1 Slot 0 */
105 { 49, 49, 49, 49 }, /* IDSEL 2 - PCIX1 Slot 1 */
106 { 49, 49, 49, 49 }, /* IDSEL 3 - PCIX1 Slot 2 */
107 { 49, 49, 49, 49 }, /* IDSEL 4 - PCIX1 Slot 3 */
109 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
110 return PCI_IRQ_TABLE_LOOKUP;
112 } else if (hose->index == 1) {
113 static char pci_irq_table[][4] =
115 * PCI IDSEL/INTPIN->INTLINE
119 { 50, 50, 50, 50 }, /* IDSEL 1 - PCIX2 Slot 0 */
120 { 50, 50, 50, 50 }, /* IDSEL 2 - PCIX2 Slot 1 */
121 { 50, 50, 50, 50 }, /* IDSEL 3 - PCIX2 Slot 2 */
122 { 50, 50, 50, 50 }, /* IDSEL 4 - PCIX2 Slot 3 */
124 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
125 return PCI_IRQ_TABLE_LOOKUP;
130 static void __init luan_set_emacdata(void)
133 struct ocp_func_emac_data *emacdata;
135 /* Set phy_map, phy_mode, and mac_addr for the EMAC */
136 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
137 emacdata = def->additions;
138 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
139 emacdata->phy_mode = PHY_MODE_GMII;
140 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
143 #define PCIX_READW(offset) \
144 (readw((void *)((u32)pcix_reg_base+offset)))
146 #define PCIX_WRITEW(value, offset) \
147 (writew(value, (void *)((u32)pcix_reg_base+offset)))
149 #define PCIX_WRITEL(value, offset) \
150 (writel(value, (void *)((u32)pcix_reg_base+offset)))
153 luan_setup_pcix(void)
159 pcix_reg_base = ioremap64(PCIX0_REG_BASE + i*PCIX_REG_OFFSET, PCIX_REG_SIZE);
161 /* Enable PCIX0 I/O, Mem, and Busmaster cycles */
162 PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND);
164 /* Disable all windows */
165 PCIX_WRITEL(0, PCIX0_POM0SA);
166 PCIX_WRITEL(0, PCIX0_POM1SA);
167 PCIX_WRITEL(0, PCIX0_POM2SA);
168 PCIX_WRITEL(0, PCIX0_PIM0SA);
169 PCIX_WRITEL(0, PCIX0_PIM0SAH);
170 PCIX_WRITEL(0, PCIX0_PIM1SA);
171 PCIX_WRITEL(0, PCIX0_PIM2SA);
172 PCIX_WRITEL(0, PCIX0_PIM2SAH);
175 * Setup 512MB PLB->PCI outbound mem window
176 * (a_n000_0000->0_n000_0000)
178 PCIX_WRITEL(0x0000000a, PCIX0_POM0LAH);
179 PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0LAL);
180 PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
181 PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0PCIAL);
182 PCIX_WRITEL(0xe0000001, PCIX0_POM0SA);
184 /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
185 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
186 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
187 PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
188 PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH);
190 iounmap(pcix_reg_base);
197 luan_setup_hose(struct pci_controller *hose,
206 sprintf(name, "PCIX%d host bridge", hose->index);
208 hose->pci_mem_offset = LUAN_PCIX_MEM_OFFSET;
210 pci_init_resource(&hose->io_resource,
216 pci_init_resource(&hose->mem_resources[0],
222 hose->io_space.start = LUAN_PCIX_LOWER_IO;
223 hose->io_space.end = LUAN_PCIX_UPPER_IO;
224 hose->mem_space.start = lower_mem;
225 hose->mem_space.end = upper_mem;
226 hose->io_base_virt = ioremap64(pcix_io_base, PCIX_IO_SIZE);
227 isa_io_base = (unsigned long) hose->io_base_virt;
229 setup_indirect_pci(hose, cfga, cfgd);
230 hose->set_cfg_type = 1;
234 luan_setup_hoses(void)
236 struct pci_controller *hose1, *hose2;
238 /* Configure windows on the PCI-X host bridge */
241 /* Allocate hoses for PCIX1 and PCIX2 */
242 hose1 = pcibios_alloc_controller();
243 hose2 = pcibios_alloc_controller();
244 if (!hose1 || !hose2)
248 hose1->first_busno = 0;
249 hose1->last_busno = 0xff;
251 luan_setup_hose(hose1,
252 LUAN_PCIX1_LOWER_MEM,
253 LUAN_PCIX1_UPPER_MEM,
258 hose1->last_busno = pciauto_bus_scan(hose1, hose1->first_busno);
261 hose2->first_busno = hose1->last_busno + 1;
262 hose2->last_busno = 0xff;
264 luan_setup_hose(hose2,
265 LUAN_PCIX2_LOWER_MEM,
266 LUAN_PCIX2_UPPER_MEM,
271 hose2->last_busno = pciauto_bus_scan(hose2, hose2->first_busno);
273 ppc_md.pci_swizzle = common_swizzle;
274 ppc_md.pci_map_irq = luan_map_irq;
280 luan_early_serial_map(void)
282 struct uart_port port;
284 /* Setup ioremapped serial port access */
285 memset(&port, 0, sizeof(port));
286 port.membase = ioremap64(PPC440SP_UART0_ADDR, 8);
287 port.irq = UART0_INT;
288 port.uartclk = clocks.uart0;
290 port.iotype = SERIAL_IO_MEM;
291 port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
294 if (early_serial_setup(&port) != 0) {
295 printk("Early serial init of port 0 failed\n");
298 port.membase = ioremap64(PPC440SP_UART1_ADDR, 8);
299 port.irq = UART1_INT;
300 port.uartclk = clocks.uart1;
303 if (early_serial_setup(&port) != 0) {
304 printk("Early serial init of port 1 failed\n");
307 port.membase = ioremap64(PPC440SP_UART2_ADDR, 8);
308 port.irq = UART2_INT;
309 port.uartclk = BASE_BAUD;
312 if (early_serial_setup(&port) != 0) {
313 printk("Early serial init of port 2 failed\n");
318 luan_setup_arch(void)
322 #if !defined(CONFIG_BDI_SWITCH)
324 * The Abatron BDI JTAG debugger does not tolerate others
325 * mucking with the debug registers.
327 mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
331 * Determine various clocks.
332 * To be completely correct we should get SysClk
333 * from FPGA, because it can be changed by on-board switches
336 /* 440GX and 440SP clocking is the same -mdp */
337 ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
338 ocp_sys_info.opb_bus_freq = clocks.opb;
340 /* init to some ~sane value until calibrate_delay() runs */
341 loops_per_jiffy = 50000000/HZ;
343 /* Setup PCIXn host bridges */
346 #ifdef CONFIG_BLK_DEV_INITRD
348 ROOT_DEV = Root_RAM0;
351 #ifdef CONFIG_ROOT_NFS
354 ROOT_DEV = Root_HDA1;
357 luan_early_serial_map();
359 /* Identify the system */
360 printk("Luan port (MontaVista Software, Inc. <source@mvista.com>)\n");
363 void __init platform_init(unsigned long r3, unsigned long r4,
364 unsigned long r5, unsigned long r6, unsigned long r7)
366 parse_bootinfo(find_bootinfo());
369 * If we were passed in a board information, copy it into the
370 * residual data area.
373 __res = *(bd_t *)(r3 + KERNELBASE);
375 ibm44x_platform_init();
377 ppc_md.setup_arch = luan_setup_arch;
378 ppc_md.show_cpuinfo = luan_show_cpuinfo;
379 ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
380 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
382 ppc_md.calibrate_decr = luan_calibrate_decr;
384 ppc_md.early_serial_map = luan_early_serial_map;