2 * Yucca board specific routines
4 * Roland Dreier <rolandd@cisco.com> (based on luan.c by Matt Porter)
6 * Copyright 2004-2005 MontaVista Software Inc.
7 * Copyright (c) 2005 Cisco Systems. All rights reserved.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
15 #include <linux/stddef.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/errno.h>
19 #include <linux/reboot.h>
20 #include <linux/pci.h>
21 #include <linux/kdev_t.h>
22 #include <linux/types.h>
23 #include <linux/major.h>
24 #include <linux/blkdev.h>
25 #include <linux/console.h>
26 #include <linux/delay.h>
27 #include <linux/ide.h>
28 #include <linux/initrd.h>
29 #include <linux/seq_file.h>
30 #include <linux/root_dev.h>
31 #include <linux/tty.h>
32 #include <linux/serial.h>
33 #include <linux/serial_core.h>
34 #include <linux/serial_8250.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>
50 #include <syslib/ibm44x_common.h>
51 #include <syslib/ibm440gx_common.h>
52 #include <syslib/ibm440sp_common.h>
53 #include <syslib/ppc440spe_pcie.h>
57 static struct ibm44x_clocks clocks __initdata;
60 yucca_calibrate_decr(void)
64 if (mfspr(SPRN_CCR1) & CCR1_TCS)
69 ibm44x_calibrate_decr(freq);
73 yucca_show_cpuinfo(struct seq_file *m)
75 seq_printf(m, "vendor\t\t: AMCC\n");
76 seq_printf(m, "machine\t\t: PPC440SPe EVB (Yucca)\n");
90 yucca_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 if (hose_type[hose->index] == HOSE_PCIX) {
95 static char pci_irq_table[][4] =
97 * PCI IDSEL/INTPIN->INTLINE
101 { 81, -1, -1, -1 }, /* IDSEL 1 - PCIX0 Slot 0 */
103 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
104 return PCI_IRQ_TABLE_LOOKUP;
105 } else if (hose_type[hose->index] == HOSE_PCIE0) {
106 static char pci_irq_table[][4] =
108 * PCI IDSEL/INTPIN->INTLINE
114 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
115 return PCI_IRQ_TABLE_LOOKUP;
116 } else if (hose_type[hose->index] == HOSE_PCIE1) {
117 static char pci_irq_table[][4] =
119 * PCI IDSEL/INTPIN->INTLINE
123 { 100, 101, 102, 103 },
125 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
126 return PCI_IRQ_TABLE_LOOKUP;
127 } else if (hose_type[hose->index] == HOSE_PCIE2) {
128 static char pci_irq_table[][4] =
130 * PCI IDSEL/INTPIN->INTLINE
134 { 104, 105, 106, 107 },
136 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
137 return PCI_IRQ_TABLE_LOOKUP;
142 static void __init yucca_set_emacdata(void)
145 struct ocp_func_emac_data *emacdata;
147 /* Set phy_map, phy_mode, and mac_addr for the EMAC */
148 def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
149 emacdata = def->additions;
150 emacdata->phy_map = 0x00000001; /* Skip 0x00 */
151 emacdata->phy_mode = PHY_MODE_GMII;
152 memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
155 static int __init yucca_pcie_card_present(int port)
157 void __iomem *pcie_fpga_base;
160 pcie_fpga_base = ioremap64(YUCCA_FPGA_REG_BASE, YUCCA_FPGA_REG_SIZE);
161 reg = in_be16(pcie_fpga_base + FPGA_REG1C);
162 iounmap(pcie_fpga_base);
165 case 0: return !(reg & FPGA_REG1C_PE0_PRSNT);
166 case 1: return !(reg & FPGA_REG1C_PE1_PRSNT);
167 case 2: return !(reg & FPGA_REG1C_PE2_PRSNT);
173 * For the given slot, set rootpoint mode, send power to the slot,
174 * turn on the green LED and turn off the yellow LED, enable the clock
175 * and turn off reset.
177 static void __init yucca_setup_pcie_fpga_rootpoint(int port)
179 void __iomem *pcie_reg_fpga_base;
180 u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
182 pcie_reg_fpga_base = ioremap64(YUCCA_FPGA_REG_BASE, YUCCA_FPGA_REG_SIZE);
186 rootpoint = FPGA_REG1C_PE0_ROOTPOINT;
188 power = FPGA_REG1A_PE0_PWRON;
189 green_led = FPGA_REG1A_PE0_GLED;
190 clock = FPGA_REG1A_PE0_REFCLK_ENABLE;
191 yellow_led = FPGA_REG1A_PE0_YLED;
192 reset_off = FPGA_REG1C_PE0_PERST;
196 endpoint = FPGA_REG1C_PE1_ENDPOINT;
197 power = FPGA_REG1A_PE1_PWRON;
198 green_led = FPGA_REG1A_PE1_GLED;
199 clock = FPGA_REG1A_PE1_REFCLK_ENABLE;
200 yellow_led = FPGA_REG1A_PE1_YLED;
201 reset_off = FPGA_REG1C_PE1_PERST;
205 endpoint = FPGA_REG1C_PE2_ENDPOINT;
206 power = FPGA_REG1A_PE2_PWRON;
207 green_led = FPGA_REG1A_PE2_GLED;
208 clock = FPGA_REG1A_PE2_REFCLK_ENABLE;
209 yellow_led = FPGA_REG1A_PE2_YLED;
210 reset_off = FPGA_REG1C_PE2_PERST;
214 iounmap(pcie_reg_fpga_base);
218 out_be16(pcie_reg_fpga_base + FPGA_REG1A,
219 ~(power | clock | green_led) &
220 (yellow_led | in_be16(pcie_reg_fpga_base + FPGA_REG1A)));
221 out_be16(pcie_reg_fpga_base + FPGA_REG1C,
222 ~(endpoint | reset_off) &
223 (rootpoint | in_be16(pcie_reg_fpga_base + FPGA_REG1C)));
226 * Leave device in reset for a while after powering on the
227 * slot to give it a chance to initialize.
231 out_be16(pcie_reg_fpga_base + FPGA_REG1C,
232 reset_off | in_be16(pcie_reg_fpga_base + FPGA_REG1C));
234 iounmap(pcie_reg_fpga_base);
238 yucca_setup_hoses(void)
240 struct pci_controller *hose;
244 if (0 && ppc440spe_init_pcie()) {
245 printk(KERN_WARNING "PPC440SPe PCI Express initialization failed\n");
249 for (i = 0; i <= 2; ++i) {
250 if (!yucca_pcie_card_present(i))
253 printk(KERN_INFO "PCIE%d: card present\n", i);
254 yucca_setup_pcie_fpga_rootpoint(i);
255 if (ppc440spe_init_pcie_rootport(i)) {
256 printk(KERN_WARNING "PCIE%d: initialization failed\n", i);
260 hose = pcibios_alloc_controller();
264 sprintf(name, "PCIE%d host bridge", i);
265 pci_init_resource(&hose->io_resource,
271 hose->mem_space.start = YUCCA_PCIE_LOWER_MEM +
272 i * YUCCA_PCIE_MEM_SIZE;
273 hose->mem_space.end = hose->mem_space.start +
274 YUCCA_PCIE_MEM_SIZE - 1;
276 pci_init_resource(&hose->mem_resources[0],
277 hose->mem_space.start,
282 hose->first_busno = 0;
283 hose->last_busno = 15;
284 hose_type[hose->index] = HOSE_PCIE0 + i;
286 ppc440spe_setup_pcie(hose, i);
287 hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
290 ppc_md.pci_swizzle = common_swizzle;
291 ppc_md.pci_map_irq = yucca_map_irq;
297 yucca_early_serial_map(void)
299 struct uart_port port;
301 /* Setup ioremapped serial port access */
302 memset(&port, 0, sizeof(port));
303 port.membase = ioremap64(PPC440SPE_UART0_ADDR, 8);
304 port.irq = UART0_INT;
305 port.uartclk = clocks.uart0;
307 port.iotype = UPIO_MEM;
308 port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
311 if (early_serial_setup(&port) != 0) {
312 printk("Early serial init of port 0 failed\n");
315 port.membase = ioremap64(PPC440SPE_UART1_ADDR, 8);
316 port.irq = UART1_INT;
317 port.uartclk = clocks.uart1;
320 if (early_serial_setup(&port) != 0) {
321 printk("Early serial init of port 1 failed\n");
324 port.membase = ioremap64(PPC440SPE_UART2_ADDR, 8);
325 port.irq = UART2_INT;
326 port.uartclk = BASE_BAUD;
329 if (early_serial_setup(&port) != 0) {
330 printk("Early serial init of port 2 failed\n");
335 yucca_setup_arch(void)
337 yucca_set_emacdata();
339 #if !defined(CONFIG_BDI_SWITCH)
341 * The Abatron BDI JTAG debugger does not tolerate others
342 * mucking with the debug registers.
344 mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
348 * Determine various clocks.
349 * To be completely correct we should get SysClk
350 * from FPGA, because it can be changed by on-board switches
353 /* 440GX and 440SPe clocking is the same - rd */
354 ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
355 ocp_sys_info.opb_bus_freq = clocks.opb;
357 /* init to some ~sane value until calibrate_delay() runs */
358 loops_per_jiffy = 50000000/HZ;
360 /* Setup PCIXn host bridges */
363 #ifdef CONFIG_BLK_DEV_INITRD
365 ROOT_DEV = Root_RAM0;
368 #ifdef CONFIG_ROOT_NFS
371 ROOT_DEV = Root_HDA1;
374 yucca_early_serial_map();
376 /* Identify the system */
377 printk("Yucca port (Roland Dreier <rolandd@cisco.com>)\n");
380 void __init platform_init(unsigned long r3, unsigned long r4,
381 unsigned long r5, unsigned long r6, unsigned long r7)
383 ibm44x_platform_init(r3, r4, r5, r6, r7);
385 ppc_md.setup_arch = yucca_setup_arch;
386 ppc_md.show_cpuinfo = yucca_show_cpuinfo;
387 ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
388 ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
390 ppc_md.calibrate_decr = yucca_calibrate_decr;
392 ppc_md.early_serial_map = yucca_early_serial_map;