2 * arch/ppc/platforms/4xx/yucca.c
4 * Yucca board specific routines
6 * Roland Dreier <rolandd@cisco.com> (based on luan.c by Matt Porter)
8 * Copyright 2004-2005 MontaVista Software Inc.
9 * Copyright (c) 2005 Cisco Systems. All rights reserved.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 #include <linux/config.h>
18 #include <linux/stddef.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/errno.h>
22 #include <linux/reboot.h>
23 #include <linux/pci.h>
24 #include <linux/kdev_t.h>
25 #include <linux/types.h>
26 #include <linux/major.h>
27 #include <linux/blkdev.h>
28 #include <linux/console.h>
29 #include <linux/delay.h>
30 #include <linux/ide.h>
31 #include <linux/initrd.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>
55 #include <syslib/ppc440spe_pcie.h>
59 static struct ibm44x_clocks clocks __initdata;
62 yucca_calibrate_decr(void)
66 if (mfspr(SPRN_CCR1) & CCR1_TCS)
71 ibm44x_calibrate_decr(freq);
75 yucca_show_cpuinfo(struct seq_file *m)
77 seq_printf(m, "vendor\t\t: AMCC\n");
78 seq_printf(m, "machine\t\t: PPC440SPe EVB (Yucca)\n");
92 yucca_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
94 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
96 if (hose_type[hose->index] == HOSE_PCIX) {
97 static char pci_irq_table[][4] =
99 * PCI IDSEL/INTPIN->INTLINE
103 { 81, -1, -1, -1 }, /* IDSEL 1 - PCIX0 Slot 0 */
105 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
106 return PCI_IRQ_TABLE_LOOKUP;
107 } else if (hose_type[hose->index] == HOSE_PCIE0) {
108 static char pci_irq_table[][4] =
110 * PCI IDSEL/INTPIN->INTLINE
116 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
117 return PCI_IRQ_TABLE_LOOKUP;
118 } else if (hose_type[hose->index] == HOSE_PCIE1) {
119 static char pci_irq_table[][4] =
121 * PCI IDSEL/INTPIN->INTLINE
125 { 100, 101, 102, 103 },
127 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
128 return PCI_IRQ_TABLE_LOOKUP;
129 } else if (hose_type[hose->index] == HOSE_PCIE2) {
130 static char pci_irq_table[][4] =
132 * PCI IDSEL/INTPIN->INTLINE
136 { 104, 105, 106, 107 },
138 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
139 return PCI_IRQ_TABLE_LOOKUP;
144 static void __init yucca_set_emacdata(void)
147 struct ocp_func_emac_data *emacdata;
149 /* Set phy_map, phy_mode, and mac_addr for the EMAC */
150 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
151 emacdata = def->additions;
152 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
153 emacdata->phy_mode = PHY_MODE_GMII;
154 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
157 static int __init yucca_pcie_card_present(int port)
159 void __iomem *pcie_fpga_base;
162 pcie_fpga_base = ioremap64(YUCCA_FPGA_REG_BASE, YUCCA_FPGA_REG_SIZE);
163 reg = in_be16(pcie_fpga_base + FPGA_REG1C);
164 iounmap(pcie_fpga_base);
167 case 0: return !(reg & FPGA_REG1C_PE0_PRSNT);
168 case 1: return !(reg & FPGA_REG1C_PE1_PRSNT);
169 case 2: return !(reg & FPGA_REG1C_PE2_PRSNT);
175 * For the given slot, set rootpoint mode, send power to the slot,
176 * turn on the green LED and turn off the yellow LED, enable the clock
177 * and turn off reset.
179 static void __init yucca_setup_pcie_fpga_rootpoint(int port)
181 void __iomem *pcie_reg_fpga_base;
182 u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
184 pcie_reg_fpga_base = ioremap64(YUCCA_FPGA_REG_BASE, YUCCA_FPGA_REG_SIZE);
188 rootpoint = FPGA_REG1C_PE0_ROOTPOINT;
190 power = FPGA_REG1A_PE0_PWRON;
191 green_led = FPGA_REG1A_PE0_GLED;
192 clock = FPGA_REG1A_PE0_REFCLK_ENABLE;
193 yellow_led = FPGA_REG1A_PE0_YLED;
194 reset_off = FPGA_REG1C_PE0_PERST;
198 endpoint = FPGA_REG1C_PE1_ENDPOINT;
199 power = FPGA_REG1A_PE1_PWRON;
200 green_led = FPGA_REG1A_PE1_GLED;
201 clock = FPGA_REG1A_PE1_REFCLK_ENABLE;
202 yellow_led = FPGA_REG1A_PE1_YLED;
203 reset_off = FPGA_REG1C_PE1_PERST;
207 endpoint = FPGA_REG1C_PE2_ENDPOINT;
208 power = FPGA_REG1A_PE2_PWRON;
209 green_led = FPGA_REG1A_PE2_GLED;
210 clock = FPGA_REG1A_PE2_REFCLK_ENABLE;
211 yellow_led = FPGA_REG1A_PE2_YLED;
212 reset_off = FPGA_REG1C_PE2_PERST;
219 out_be16(pcie_reg_fpga_base + FPGA_REG1A,
220 ~(power | clock | green_led) &
221 (yellow_led | in_be16(pcie_reg_fpga_base + FPGA_REG1A)));
222 out_be16(pcie_reg_fpga_base + FPGA_REG1C,
223 ~(endpoint | reset_off) &
224 (rootpoint | in_be16(pcie_reg_fpga_base + FPGA_REG1C)));
227 * Leave device in reset for a while after powering on the
228 * slot to give it a chance to initialize.
232 out_be16(pcie_reg_fpga_base + FPGA_REG1C,
233 reset_off | in_be16(pcie_reg_fpga_base + FPGA_REG1C));
235 iounmap(pcie_reg_fpga_base);
239 yucca_setup_hoses(void)
241 struct pci_controller *hose;
245 if (0 && ppc440spe_init_pcie()) {
246 printk(KERN_WARNING "PPC440SPe PCI Express initialization failed\n");
250 for (i = 0; i <= 2; ++i) {
251 if (!yucca_pcie_card_present(i))
254 printk(KERN_INFO "PCIE%d: card present\n", i);
255 yucca_setup_pcie_fpga_rootpoint(i);
256 if (ppc440spe_init_pcie_rootport(i)) {
257 printk(KERN_WARNING "PCIE%d: initialization failed\n", i);
261 hose = pcibios_alloc_controller();
265 sprintf(name, "PCIE%d host bridge", i);
266 pci_init_resource(&hose->io_resource,
272 hose->mem_space.start = YUCCA_PCIE_LOWER_MEM +
273 i * YUCCA_PCIE_MEM_SIZE;
274 hose->mem_space.end = hose->mem_space.start +
275 YUCCA_PCIE_MEM_SIZE - 1;
277 pci_init_resource(&hose->mem_resources[0],
278 hose->mem_space.start,
283 hose->first_busno = 0;
284 hose->last_busno = 15;
285 hose_type[hose->index] = HOSE_PCIE0 + i;
287 ppc440spe_setup_pcie(hose, i);
288 hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
291 ppc_md.pci_swizzle = common_swizzle;
292 ppc_md.pci_map_irq = yucca_map_irq;
298 yucca_early_serial_map(void)
300 struct uart_port port;
302 /* Setup ioremapped serial port access */
303 memset(&port, 0, sizeof(port));
304 port.membase = ioremap64(PPC440SPE_UART0_ADDR, 8);
305 port.irq = UART0_INT;
306 port.uartclk = clocks.uart0;
308 port.iotype = SERIAL_IO_MEM;
309 port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
312 if (early_serial_setup(&port) != 0) {
313 printk("Early serial init of port 0 failed\n");
316 port.membase = ioremap64(PPC440SPE_UART1_ADDR, 8);
317 port.irq = UART1_INT;
318 port.uartclk = clocks.uart1;
321 if (early_serial_setup(&port) != 0) {
322 printk("Early serial init of port 1 failed\n");
325 port.membase = ioremap64(PPC440SPE_UART2_ADDR, 8);
326 port.irq = UART2_INT;
327 port.uartclk = BASE_BAUD;
330 if (early_serial_setup(&port) != 0) {
331 printk("Early serial init of port 2 failed\n");
336 yucca_setup_arch(void)
338 yucca_set_emacdata();
340 #if !defined(CONFIG_BDI_SWITCH)
342 * The Abatron BDI JTAG debugger does not tolerate others
343 * mucking with the debug registers.
345 mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
349 * Determine various clocks.
350 * To be completely correct we should get SysClk
351 * from FPGA, because it can be changed by on-board switches
354 /* 440GX and 440SPe clocking is the same - rd */
355 ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
356 ocp_sys_info.opb_bus_freq = clocks.opb;
358 /* init to some ~sane value until calibrate_delay() runs */
359 loops_per_jiffy = 50000000/HZ;
361 /* Setup PCIXn host bridges */
364 #ifdef CONFIG_BLK_DEV_INITRD
366 ROOT_DEV = Root_RAM0;
369 #ifdef CONFIG_ROOT_NFS
372 ROOT_DEV = Root_HDA1;
375 yucca_early_serial_map();
377 /* Identify the system */
378 printk("Yucca port (Roland Dreier <rolandd@cisco.com>)\n");
381 void __init platform_init(unsigned long r3, unsigned long r4,
382 unsigned long r5, unsigned long r6, unsigned long r7)
384 ibm44x_platform_init(r3, r4, r5, r6, r7);
386 ppc_md.setup_arch = yucca_setup_arch;
387 ppc_md.show_cpuinfo = yucca_show_cpuinfo;
388 ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
389 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
391 ppc_md.calibrate_decr = yucca_calibrate_decr;
393 ppc_md.early_serial_map = yucca_early_serial_map;