2 * Luan board specific routines
4 * Matt Porter <mporter@kernel.crashing.org>
6 * Copyright 2004-2005 MontaVista Software Inc.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/reboot.h>
19 #include <linux/pci.h>
20 #include <linux/kdev_t.h>
21 #include <linux/types.h>
22 #include <linux/major.h>
23 #include <linux/blkdev.h>
24 #include <linux/console.h>
25 #include <linux/delay.h>
26 #include <linux/ide.h>
27 #include <linux/initrd.h>
28 #include <linux/seq_file.h>
29 #include <linux/root_dev.h>
30 #include <linux/tty.h>
31 #include <linux/serial.h>
32 #include <linux/serial_core.h>
34 #include <asm/system.h>
35 #include <asm/pgtable.h>
39 #include <asm/machdep.h>
41 #include <asm/pci-bridge.h>
44 #include <asm/bootinfo.h>
45 #include <asm/ppc4xx_pic.h>
46 #include <asm/ppcboot.h>
48 #include <syslib/ibm44x_common.h>
49 #include <syslib/ibm440gx_common.h>
50 #include <syslib/ibm440sp_common.h>
54 static struct ibm44x_clocks clocks __initdata;
57 luan_calibrate_decr(void)
61 if (mfspr(SPRN_CCR1) & CCR1_TCS)
66 ibm44x_calibrate_decr(freq);
70 luan_show_cpuinfo(struct seq_file *m)
72 seq_printf(m, "vendor\t\t: IBM\n");
73 seq_printf(m, "machine\t\t: PPC440SP EVB (Luan)\n");
79 luan_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
81 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
83 /* PCIX0 in adapter mode, no host interrupt routing */
86 if (hose->index == 0) {
87 static char pci_irq_table[][4] =
89 * PCI IDSEL/INTPIN->INTLINE
93 { 49, 49, 49, 49 }, /* IDSEL 1 - PCIX1 Slot 0 */
94 { 49, 49, 49, 49 }, /* IDSEL 2 - PCIX1 Slot 1 */
95 { 49, 49, 49, 49 }, /* IDSEL 3 - PCIX1 Slot 2 */
96 { 49, 49, 49, 49 }, /* IDSEL 4 - PCIX1 Slot 3 */
98 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
99 return PCI_IRQ_TABLE_LOOKUP;
101 } else if (hose->index == 1) {
102 static char pci_irq_table[][4] =
104 * PCI IDSEL/INTPIN->INTLINE
108 { 50, 50, 50, 50 }, /* IDSEL 1 - PCIX2 Slot 0 */
109 { 50, 50, 50, 50 }, /* IDSEL 2 - PCIX2 Slot 1 */
110 { 50, 50, 50, 50 }, /* IDSEL 3 - PCIX2 Slot 2 */
111 { 50, 50, 50, 50 }, /* IDSEL 4 - PCIX2 Slot 3 */
113 const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
114 return PCI_IRQ_TABLE_LOOKUP;
119 static void __init luan_set_emacdata(void)
122 struct ocp_func_emac_data *emacdata;
124 /* Set phy_map, phy_mode, and mac_addr for the EMAC */
125 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
126 emacdata = def->additions;
127 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
128 emacdata->phy_mode = PHY_MODE_GMII;
129 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
132 #define PCIX_READW(offset) \
133 (readw((void *)((u32)pcix_reg_base+offset)))
135 #define PCIX_WRITEW(value, offset) \
136 (writew(value, (void *)((u32)pcix_reg_base+offset)))
138 #define PCIX_WRITEL(value, offset) \
139 (writel(value, (void *)((u32)pcix_reg_base+offset)))
142 luan_setup_pcix(void)
148 pcix_reg_base = ioremap64(PCIX0_REG_BASE + i*PCIX_REG_OFFSET, PCIX_REG_SIZE);
150 /* Enable PCIX0 I/O, Mem, and Busmaster cycles */
151 PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND);
153 /* Disable all windows */
154 PCIX_WRITEL(0, PCIX0_POM0SA);
155 PCIX_WRITEL(0, PCIX0_POM1SA);
156 PCIX_WRITEL(0, PCIX0_POM2SA);
157 PCIX_WRITEL(0, PCIX0_PIM0SA);
158 PCIX_WRITEL(0, PCIX0_PIM0SAH);
159 PCIX_WRITEL(0, PCIX0_PIM1SA);
160 PCIX_WRITEL(0, PCIX0_PIM2SA);
161 PCIX_WRITEL(0, PCIX0_PIM2SAH);
164 * Setup 512MB PLB->PCI outbound mem window
165 * (a_n000_0000->0_n000_0000)
167 PCIX_WRITEL(0x0000000a, PCIX0_POM0LAH);
168 PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0LAL);
169 PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
170 PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0PCIAL);
171 PCIX_WRITEL(0xe0000001, PCIX0_POM0SA);
173 /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
174 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
175 PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
176 PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
177 PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH);
179 iounmap(pcix_reg_base);
186 luan_setup_hose(struct pci_controller *hose,
195 sprintf(name, "PCIX%d host bridge", hose->index);
197 hose->pci_mem_offset = LUAN_PCIX_MEM_OFFSET;
199 pci_init_resource(&hose->io_resource,
205 pci_init_resource(&hose->mem_resources[0],
211 hose->io_space.start = LUAN_PCIX_LOWER_IO;
212 hose->io_space.end = LUAN_PCIX_UPPER_IO;
213 hose->mem_space.start = lower_mem;
214 hose->mem_space.end = upper_mem;
215 hose->io_base_virt = ioremap64(pcix_io_base, PCIX_IO_SIZE);
216 isa_io_base = (unsigned long) hose->io_base_virt;
218 setup_indirect_pci(hose, cfga, cfgd);
219 hose->set_cfg_type = 1;
223 luan_setup_hoses(void)
225 struct pci_controller *hose1, *hose2;
227 /* Configure windows on the PCI-X host bridge */
230 /* Allocate hoses for PCIX1 and PCIX2 */
231 hose1 = pcibios_alloc_controller();
232 hose2 = pcibios_alloc_controller();
233 if (!hose1 || !hose2)
237 hose1->first_busno = 0;
238 hose1->last_busno = 0xff;
240 luan_setup_hose(hose1,
241 LUAN_PCIX1_LOWER_MEM,
242 LUAN_PCIX1_UPPER_MEM,
247 hose1->last_busno = pciauto_bus_scan(hose1, hose1->first_busno);
250 hose2->first_busno = hose1->last_busno + 1;
251 hose2->last_busno = 0xff;
253 luan_setup_hose(hose2,
254 LUAN_PCIX2_LOWER_MEM,
255 LUAN_PCIX2_UPPER_MEM,
260 hose2->last_busno = pciauto_bus_scan(hose2, hose2->first_busno);
262 ppc_md.pci_swizzle = common_swizzle;
263 ppc_md.pci_map_irq = luan_map_irq;
269 luan_early_serial_map(void)
271 struct uart_port port;
273 /* Setup ioremapped serial port access */
274 memset(&port, 0, sizeof(port));
275 port.membase = ioremap64(PPC440SP_UART0_ADDR, 8);
276 port.irq = UART0_INT;
277 port.uartclk = clocks.uart0;
279 port.iotype = UPIO_MEM;
280 port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
283 if (early_serial_setup(&port) != 0) {
284 printk("Early serial init of port 0 failed\n");
287 port.membase = ioremap64(PPC440SP_UART1_ADDR, 8);
288 port.irq = UART1_INT;
289 port.uartclk = clocks.uart1;
292 if (early_serial_setup(&port) != 0) {
293 printk("Early serial init of port 1 failed\n");
296 port.membase = ioremap64(PPC440SP_UART2_ADDR, 8);
297 port.irq = UART2_INT;
298 port.uartclk = BASE_BAUD;
301 if (early_serial_setup(&port) != 0) {
302 printk("Early serial init of port 2 failed\n");
307 luan_setup_arch(void)
311 #if !defined(CONFIG_BDI_SWITCH)
313 * The Abatron BDI JTAG debugger does not tolerate others
314 * mucking with the debug registers.
316 mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
320 * Determine various clocks.
321 * To be completely correct we should get SysClk
322 * from FPGA, because it can be changed by on-board switches
325 /* 440GX and 440SP clocking is the same -mdp */
326 ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
327 ocp_sys_info.opb_bus_freq = clocks.opb;
329 /* init to some ~sane value until calibrate_delay() runs */
330 loops_per_jiffy = 50000000/HZ;
332 /* Setup PCIXn host bridges */
335 #ifdef CONFIG_BLK_DEV_INITRD
337 ROOT_DEV = Root_RAM0;
340 #ifdef CONFIG_ROOT_NFS
343 ROOT_DEV = Root_HDA1;
346 luan_early_serial_map();
348 /* Identify the system */
349 printk("Luan port (MontaVista Software, Inc. <source@mvista.com>)\n");
352 void __init platform_init(unsigned long r3, unsigned long r4,
353 unsigned long r5, unsigned long r6, unsigned long r7)
355 ibm44x_platform_init(r3, r4, r5, r6, r7);
357 ppc_md.setup_arch = luan_setup_arch;
358 ppc_md.show_cpuinfo = luan_show_cpuinfo;
359 ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
360 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
362 ppc_md.calibrate_decr = luan_calibrate_decr;
364 ppc_md.early_serial_map = luan_early_serial_map;