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>
58 static struct ibm44x_clocks clocks __initdata;
61 luan_calibrate_decr(void)
65 if (mfspr(SPRN_CCR1) & CCR1_TCS)
70 ibm44x_calibrate_decr(freq);
74 luan_show_cpuinfo(struct seq_file *m)
76 seq_printf(m, "vendor\t\t: IBM\n");
77 seq_printf(m, "machine\t\t: PPC440SP EVB (Luan)\n");
83 luan_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
85 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
87 /* PCIX0 in adapter mode, no host interrupt routing */
90 if (hose->index == 0) {
91 static char pci_irq_table[][4] =
93 * PCI IDSEL/INTPIN->INTLINE
97 { 49, 49, 49, 49 }, /* IDSEL 1 - PCIX1 Slot 0 */
98 { 49, 49, 49, 49 }, /* IDSEL 2 - PCIX1 Slot 1 */
99 { 49, 49, 49, 49 }, /* IDSEL 3 - PCIX1 Slot 2 */
100 { 49, 49, 49, 49 }, /* IDSEL 4 - PCIX1 Slot 3 */
102 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
103 return PCI_IRQ_TABLE_LOOKUP;
105 } else if (hose->index == 1) {
106 static char pci_irq_table[][4] =
108 * PCI IDSEL/INTPIN->INTLINE
112 { 50, 50, 50, 50 }, /* IDSEL 1 - PCIX2 Slot 0 */
113 { 50, 50, 50, 50 }, /* IDSEL 2 - PCIX2 Slot 1 */
114 { 50, 50, 50, 50 }, /* IDSEL 3 - PCIX2 Slot 2 */
115 { 50, 50, 50, 50 }, /* IDSEL 4 - PCIX2 Slot 3 */
117 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
118 return PCI_IRQ_TABLE_LOOKUP;
123 static void __init luan_set_emacdata(void)
126 struct ocp_func_emac_data *emacdata;
128 /* Set phy_map, phy_mode, and mac_addr for the EMAC */
129 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
130 emacdata = def->additions;
131 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
132 emacdata->phy_mode = PHY_MODE_GMII;
133 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
136 #define PCIX_READW(offset) \
137 (readw((void *)((u32)pcix_reg_base+offset)))
139 #define PCIX_WRITEW(value, offset) \
140 (writew(value, (void *)((u32)pcix_reg_base+offset)))
142 #define PCIX_WRITEL(value, offset) \
143 (writel(value, (void *)((u32)pcix_reg_base+offset)))
146 luan_setup_pcix(void)
152 pcix_reg_base = ioremap64(PCIX0_REG_BASE + i*PCIX_REG_OFFSET, PCIX_REG_SIZE);
154 /* Enable PCIX0 I/O, Mem, and Busmaster cycles */
155 PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND);
157 /* Disable all windows */
158 PCIX_WRITEL(0, PCIX0_POM0SA);
159 PCIX_WRITEL(0, PCIX0_POM1SA);
160 PCIX_WRITEL(0, PCIX0_POM2SA);
161 PCIX_WRITEL(0, PCIX0_PIM0SA);
162 PCIX_WRITEL(0, PCIX0_PIM0SAH);
163 PCIX_WRITEL(0, PCIX0_PIM1SA);
164 PCIX_WRITEL(0, PCIX0_PIM2SA);
165 PCIX_WRITEL(0, PCIX0_PIM2SAH);
168 * Setup 512MB PLB->PCI outbound mem window
169 * (a_n000_0000->0_n000_0000)
171 PCIX_WRITEL(0x0000000a, PCIX0_POM0LAH);
172 PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0LAL);
173 PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
174 PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0PCIAL);
175 PCIX_WRITEL(0xe0000001, PCIX0_POM0SA);
177 /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
178 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
179 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
180 PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
181 PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH);
183 iounmap(pcix_reg_base);
190 luan_setup_hose(struct pci_controller *hose,
199 sprintf(name, "PCIX%d host bridge", hose->index);
201 hose->pci_mem_offset = LUAN_PCIX_MEM_OFFSET;
203 pci_init_resource(&hose->io_resource,
209 pci_init_resource(&hose->mem_resources[0],
215 hose->io_space.start = LUAN_PCIX_LOWER_IO;
216 hose->io_space.end = LUAN_PCIX_UPPER_IO;
217 hose->mem_space.start = lower_mem;
218 hose->mem_space.end = upper_mem;
219 hose->io_base_virt = ioremap64(pcix_io_base, PCIX_IO_SIZE);
220 isa_io_base = (unsigned long) hose->io_base_virt;
222 setup_indirect_pci(hose, cfga, cfgd);
223 hose->set_cfg_type = 1;
227 luan_setup_hoses(void)
229 struct pci_controller *hose1, *hose2;
231 /* Configure windows on the PCI-X host bridge */
234 /* Allocate hoses for PCIX1 and PCIX2 */
235 hose1 = pcibios_alloc_controller();
236 hose2 = pcibios_alloc_controller();
237 if (!hose1 || !hose2)
241 hose1->first_busno = 0;
242 hose1->last_busno = 0xff;
244 luan_setup_hose(hose1,
245 LUAN_PCIX1_LOWER_MEM,
246 LUAN_PCIX1_UPPER_MEM,
251 hose1->last_busno = pciauto_bus_scan(hose1, hose1->first_busno);
254 hose2->first_busno = hose1->last_busno + 1;
255 hose2->last_busno = 0xff;
257 luan_setup_hose(hose2,
258 LUAN_PCIX2_LOWER_MEM,
259 LUAN_PCIX2_UPPER_MEM,
264 hose2->last_busno = pciauto_bus_scan(hose2, hose2->first_busno);
266 ppc_md.pci_swizzle = common_swizzle;
267 ppc_md.pci_map_irq = luan_map_irq;
273 luan_early_serial_map(void)
275 struct uart_port port;
277 /* Setup ioremapped serial port access */
278 memset(&port, 0, sizeof(port));
279 port.membase = ioremap64(PPC440SP_UART0_ADDR, 8);
280 port.irq = UART0_INT;
281 port.uartclk = clocks.uart0;
283 port.iotype = SERIAL_IO_MEM;
284 port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
287 if (early_serial_setup(&port) != 0) {
288 printk("Early serial init of port 0 failed\n");
291 port.membase = ioremap64(PPC440SP_UART1_ADDR, 8);
292 port.irq = UART1_INT;
293 port.uartclk = clocks.uart1;
296 if (early_serial_setup(&port) != 0) {
297 printk("Early serial init of port 1 failed\n");
300 port.membase = ioremap64(PPC440SP_UART2_ADDR, 8);
301 port.irq = UART2_INT;
302 port.uartclk = BASE_BAUD;
305 if (early_serial_setup(&port) != 0) {
306 printk("Early serial init of port 2 failed\n");
311 luan_setup_arch(void)
315 #if !defined(CONFIG_BDI_SWITCH)
317 * The Abatron BDI JTAG debugger does not tolerate others
318 * mucking with the debug registers.
320 mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
324 * Determine various clocks.
325 * To be completely correct we should get SysClk
326 * from FPGA, because it can be changed by on-board switches
329 /* 440GX and 440SP clocking is the same -mdp */
330 ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
331 ocp_sys_info.opb_bus_freq = clocks.opb;
333 /* init to some ~sane value until calibrate_delay() runs */
334 loops_per_jiffy = 50000000/HZ;
336 /* Setup PCIXn host bridges */
339 #ifdef CONFIG_BLK_DEV_INITRD
341 ROOT_DEV = Root_RAM0;
344 #ifdef CONFIG_ROOT_NFS
347 ROOT_DEV = Root_HDA1;
350 luan_early_serial_map();
352 /* Identify the system */
353 printk("Luan port (MontaVista Software, Inc. <source@mvista.com>)\n");
356 void __init platform_init(unsigned long r3, unsigned long r4,
357 unsigned long r5, unsigned long r6, unsigned long r7)
359 parse_bootinfo(find_bootinfo());
362 * If we were passed in a board information, copy it into the
363 * residual data area.
366 __res = *(bd_t *)(r3 + KERNELBASE);
368 ibm44x_platform_init();
370 ppc_md.setup_arch = luan_setup_arch;
371 ppc_md.show_cpuinfo = luan_show_cpuinfo;
372 ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
373 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
375 ppc_md.calibrate_decr = luan_calibrate_decr;
377 ppc_md.early_serial_map = luan_early_serial_map;